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	<id>https://cof.canolfanuwchgwyrfai.cymru/index.php?action=history&amp;feed=atom&amp;title=Carreg_fellt_Pontlyfni</id>
	<title>Carreg fellt Pontlyfni - Hanes golygu</title>
	<link rel="self" type="application/atom+xml" href="https://cof.canolfanuwchgwyrfai.cymru/index.php?action=history&amp;feed=atom&amp;title=Carreg_fellt_Pontlyfni"/>
	<link rel="alternate" type="text/html" href="https://cof.canolfanuwchgwyrfai.cymru/index.php?title=Carreg_fellt_Pontlyfni&amp;action=history"/>
	<updated>2026-06-22T07:26:22Z</updated>
	<subtitle>Hanes diwygio&#039;r dudalen hon ar y wici</subtitle>
	<generator>MediaWiki 1.43.1</generator>
	<entry>
		<id>https://cof.canolfanuwchgwyrfai.cymru/index.php?title=Carreg_fellt_Pontlyfni&amp;diff=13361&amp;oldid=prev</id>
		<title>Cyfaill Eben am 14:44, 7 Ebrill 2022</title>
		<link rel="alternate" type="text/html" href="https://cof.canolfanuwchgwyrfai.cymru/index.php?title=Carreg_fellt_Pontlyfni&amp;diff=13361&amp;oldid=prev"/>
		<updated>2022-04-07T14:44:28Z</updated>

		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
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				&lt;col class=&quot;diff-content&quot; /&gt;
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				&lt;tr class=&quot;diff-title&quot; lang=&quot;cy&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Fersiwn hŷn&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Fersiwn yn ôl 15:44, 7 Ebrill 2022&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l1&quot;&gt;Llinell 1:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Llinell 1:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Mae Pontlyfni yn enwog ym myd seryddiaeth am yr hyn a elwir yn &#039;&#039;&#039;carreg fellt Pontlyfni&#039;&#039;&#039; a syrthiodd ym mis Ebrill 1931 &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;i&#039;r ddaear &lt;/del&gt;ar dir fferm Coch-y-bug wedi sŵn aruthrol dros ardal eang. Dyma beth mae&#039;r cylchgrawn &#039;&#039;Y Gwyddonydd&#039;&#039; yn ei ddweud am y lle y glaniodd y garreg fellt:&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Mae Pontlyfni yn enwog ym myd seryddiaeth am yr hyn a elwir yn &#039;&#039;&#039;carreg fellt Pontlyfni&#039;&#039;&#039; a syrthiodd &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;i&#039;r ddaear &lt;/ins&gt;ym mis Ebrill 1931 ar dir fferm Coch-y-bug wedi sŵn aruthrol dros ardal eang. Dyma beth mae&#039;r cylchgrawn &#039;&#039;Y Gwyddonydd&#039;&#039; yn ei ddweud am y lle y glaniodd y garreg fellt:&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&#039;&#039;&quot;Disgynnodd bedwar cam o&#039;r lle yr oedd gŵr y fferm, y diweddar John Lloyd Jones a&#039;i fab John Aneuryn Jones, yn sefyll, ac fe suddodd droedfedd mewn daear galed. Pan &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;dyn-nwyd &lt;/del&gt;ef allan o&#039;r twll yr oedd yn gynnes ac o liw llwyd-las.&quot;&#039;&#039;&amp;lt;ref&amp;gt;[http://welshjournals.llgc.org.uk/browse/viewpage/llgc-id:1394134/llgc-id:1403557/llgc-id:1403658/getText &#039;&#039;Y Gwyddonydd&#039;&#039;]&amp;lt;/ref&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&#039;&#039;&quot;Disgynnodd bedwar cam o&#039;r lle yr oedd gŵr y fferm, y diweddar John Lloyd Jones a&#039;i fab John Aneuryn Jones, yn sefyll, ac fe suddodd droedfedd mewn daear galed. Pan &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;dynnwyd &lt;/ins&gt;ef allan o&#039;r twll yr oedd yn gynnes ac o liw llwyd-las.&quot;&#039;&#039;&amp;lt;ref&amp;gt;[http://welshjournals.llgc.org.uk/browse/viewpage/llgc-id:1394134/llgc-id:1403557/llgc-id:1403658/getText &#039;&#039;Y Gwyddonydd&#039;&#039;]&amp;lt;/ref&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Bu cryn helbul wedyn hefyd wrth i&#039;r Amgueddfa Brydeinig geisio prynu&#039;r garreg fellt gan y perchennog newydd, Mr John R Jones o ardal Llanrhystud - gwrthododd yntau&#039;i &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;werthu&lt;/del&gt;. Ym 1977 cyflwynodd y garreg i&#039;r amgueddfa. Sonnir am y garreg fellt fel &quot;&#039;&#039;The Pontllyfni meteorite&#039;&#039;&quot; yn y papurau seryddol - ond dan y sillafiad amgen &#039;Pontlyfni&#039; yn aml y&#039;i rhestrir. Dim ond dwy garreg fellt sydd erioed wedi taro&#039;r ddaear yng Nghymru i sicrwydd: y naill ym Mhontlyfni a&#039;r llall tua &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;bymtheg &lt;/del&gt;milltir i ffwrdd ochr bella crib Nantlle, ym Meddgelert ym 1949.&amp;lt;ref&amp;gt;[http://www.jonesbryn.plus.com/wastronhist/meteorites.html Gwefan Bryn Jones]&amp;lt;/ref&amp;gt;&amp;lt;ref&amp;gt;Gwybodaeth gan Wicipedia&amp;lt;/ref&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Bu cryn helbul wedyn hefyd wrth i&#039;r Amgueddfa Brydeinig geisio prynu&#039;r garreg fellt gan y perchennog newydd, Mr John R Jones o ardal Llanrhystud - gwrthododd yntau&#039;i &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;gwerthu&lt;/ins&gt;. Ym 1977 cyflwynodd y garreg i&#039;r amgueddfa. Sonnir am y garreg fellt fel &quot;&#039;&#039;The Pontllyfni meteorite&#039;&#039;&quot; yn y papurau seryddol - ond dan y sillafiad amgen &#039;Pontlyfni&#039; yn aml y&#039;i rhestrir. Dim ond dwy garreg fellt sydd erioed wedi taro&#039;r ddaear yng Nghymru i sicrwydd: y naill ym Mhontlyfni a&#039;r llall tua &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;phymtheg &lt;/ins&gt;milltir i ffwrdd &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;ar &lt;/ins&gt;ochr bella crib Nantlle, ym Meddgelert ym 1949.&amp;lt;ref&amp;gt;[http://www.jonesbryn.plus.com/wastronhist/meteorites.html Gwefan Bryn Jones]&amp;lt;/ref&amp;gt;&amp;lt;ref&amp;gt;Gwybodaeth gan Wicipedia&amp;lt;/ref&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;{{eginyn}}&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;{{eginyn}}&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>Cyfaill Eben</name></author>
	</entry>
	<entry>
		<id>https://cof.canolfanuwchgwyrfai.cymru/index.php?title=Carreg_fellt_Pontlyfni&amp;diff=3587&amp;oldid=prev</id>
		<title>Irion am 10:08, 11 Mehefin 2018</title>
		<link rel="alternate" type="text/html" href="https://cof.canolfanuwchgwyrfai.cymru/index.php?title=Carreg_fellt_Pontlyfni&amp;diff=3587&amp;oldid=prev"/>
		<updated>2018-06-11T10:08:19Z</updated>

		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
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				&lt;tr class=&quot;diff-title&quot; lang=&quot;cy&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Fersiwn hŷn&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Fersiwn yn ôl 11:08, 11 Mehefin 2018&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l1&quot;&gt;Llinell 1:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Llinell 1:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;==Carreg fellt Pontllyfni==&lt;/del&gt;&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt; &lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Mae &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Pontllyfni &lt;/del&gt;yn enwog &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;hefyd &lt;/del&gt;ym myd seryddiaeth am &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;ddigwyddiad &lt;/del&gt;ym mis Ebrill 1931&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;, pan syrthiodd maen awyr (neu &#039;[[Carreg fellt|garreg fellt]]&#039;) &lt;/del&gt;i&#039;r ddaear ar dir fferm Coch-y-bug wedi sŵn aruthrol dros ardal eang. Dyma beth mae&#039;r cylchgrawn &#039;&#039;Y Gwyddonydd&#039;&#039; yn ei ddweud am y lle y glaniodd y garreg fellt:&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Mae &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Pontlyfni &lt;/ins&gt;yn enwog ym myd seryddiaeth am &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;yr hyn a elwir yn &#039;&#039;&#039;carreg fellt Pontlyfni&#039;&#039;&#039; a syrthiodd &lt;/ins&gt;ym mis Ebrill 1931 i&#039;r ddaear ar dir fferm Coch-y-bug wedi sŵn aruthrol dros ardal eang. Dyma beth mae&#039;r cylchgrawn &#039;&#039;Y Gwyddonydd&#039;&#039; yn ei ddweud am y lle y glaniodd y garreg fellt:&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&amp;#039;&amp;#039;&amp;quot;Disgynnodd bedwar cam o&amp;#039;r lle yr oedd gŵr y fferm, y diweddar John Lloyd Jones a&amp;#039;i fab John Aneuryn Jones, yn sefyll, ac fe suddodd droedfedd mewn daear galed. Pan dyn-nwyd ef allan o&amp;#039;r twll yr oedd yn gynnes ac o liw llwyd-las.&amp;quot;&amp;#039;&amp;#039;&amp;lt;ref&amp;gt;[http://welshjournals.llgc.org.uk/browse/viewpage/llgc-id:1394134/llgc-id:1403557/llgc-id:1403658/getText &amp;#039;&amp;#039;Y Gwyddonydd&amp;#039;&amp;#039;]&amp;lt;/ref&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&amp;#039;&amp;#039;&amp;quot;Disgynnodd bedwar cam o&amp;#039;r lle yr oedd gŵr y fferm, y diweddar John Lloyd Jones a&amp;#039;i fab John Aneuryn Jones, yn sefyll, ac fe suddodd droedfedd mewn daear galed. Pan dyn-nwyd ef allan o&amp;#039;r twll yr oedd yn gynnes ac o liw llwyd-las.&amp;quot;&amp;#039;&amp;#039;&amp;lt;ref&amp;gt;[http://welshjournals.llgc.org.uk/browse/viewpage/llgc-id:1394134/llgc-id:1403557/llgc-id:1403658/getText &amp;#039;&amp;#039;Y Gwyddonydd&amp;#039;&amp;#039;]&amp;lt;/ref&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Bu cryn helbul wedyn hefyd wrth i&#039;r Amgueddfa &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Brydeiniggeisio &lt;/del&gt;prynu&#039;r garreg fellt gan y perchennog newydd, Mr John R Jones o ardal Llanrhystud - gwrthododd yntau&#039;i werthu. Ym 1977 cyflwynodd y garreg i&#039;r amgueddfa. Sonnir am y garreg fellt fel &quot;&#039;&#039;The Pontllyfni meteorite&#039;&#039;&quot; yn y papurau seryddol - ond dan y sillafiad amgen &#039;Pontlyfni&#039; yn aml y&#039;i rhestrir. Dim ond dwy garreg fellt sydd erioed wedi taro&#039;r ddaear yng Nghymru i sicrwydd: y naill ym Mhontlyfni a&#039;r llall tua bymtheg milltir i ffwrdd ochr bella crib Nantlle, ym Meddgelert ym 1949.&amp;lt;ref&amp;gt;[http://www.jonesbryn.plus.com/wastronhist/meteorites.html Gwefan Bryn Jones]&amp;lt;/ref&amp;gt;&amp;lt;ref&amp;gt;Gwybodaeth gan Wicipedia&amp;lt;/ref&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Bu cryn helbul wedyn hefyd wrth i&#039;r Amgueddfa &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Brydeinig geisio &lt;/ins&gt;prynu&#039;r garreg fellt gan y perchennog newydd, Mr John R Jones o ardal Llanrhystud - gwrthododd yntau&#039;i werthu. Ym 1977 cyflwynodd y garreg i&#039;r amgueddfa. Sonnir am y garreg fellt fel &quot;&#039;&#039;The Pontllyfni meteorite&#039;&#039;&quot; yn y papurau seryddol - ond dan y sillafiad amgen &#039;Pontlyfni&#039; yn aml y&#039;i rhestrir. Dim ond dwy garreg fellt sydd erioed wedi taro&#039;r ddaear yng Nghymru i sicrwydd: y naill ym Mhontlyfni a&#039;r llall tua bymtheg milltir i ffwrdd ochr bella crib Nantlle, ym Meddgelert ym 1949.&amp;lt;ref&amp;gt;[http://www.jonesbryn.plus.com/wastronhist/meteorites.html Gwefan Bryn Jones]&amp;lt;/ref&amp;gt;&amp;lt;ref&amp;gt;Gwybodaeth gan Wicipedia&amp;lt;/ref&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;{{eginyn}}&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;{{eginyn}}&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>Irion</name></author>
	</entry>
	<entry>
		<id>https://cof.canolfanuwchgwyrfai.cymru/index.php?title=Carreg_fellt_Pontlyfni&amp;diff=3586&amp;oldid=prev</id>
		<title>Irion am 10:06, 11 Mehefin 2018</title>
		<link rel="alternate" type="text/html" href="https://cof.canolfanuwchgwyrfai.cymru/index.php?title=Carreg_fellt_Pontlyfni&amp;diff=3586&amp;oldid=prev"/>
		<updated>2018-06-11T10:06:02Z</updated>

		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr class=&quot;diff-title&quot; lang=&quot;cy&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Fersiwn hŷn&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Fersiwn yn ôl 11:06, 11 Mehefin 2018&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l11&quot;&gt;Llinell 11:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Llinell 11:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;{{cyfeiriadau}}&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;{{cyfeiriadau}}&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;[[Categori:Daearyddiaeth ffisegol]]&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>Irion</name></author>
	</entry>
	<entry>
		<id>https://cof.canolfanuwchgwyrfai.cymru/index.php?title=Carreg_fellt_Pontlyfni&amp;diff=3584&amp;oldid=prev</id>
		<title>Irion am 09:44, 11 Mehefin 2018</title>
		<link rel="alternate" type="text/html" href="https://cof.canolfanuwchgwyrfai.cymru/index.php?title=Carreg_fellt_Pontlyfni&amp;diff=3584&amp;oldid=prev"/>
		<updated>2018-06-11T09:44:52Z</updated>

		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr class=&quot;diff-title&quot; lang=&quot;cy&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Fersiwn hŷn&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Fersiwn yn ôl 10:44, 11 Mehefin 2018&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l1&quot;&gt;Llinell 1:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Llinell 1:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==Carreg fellt Pontllyfni==&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==Carreg fellt Pontllyfni==&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Mae Pontllyfni yn enwog hefyd ym myd &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;[[&lt;/del&gt;seryddiaeth&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;]] &lt;/del&gt;am ddigwyddiad ym mis Ebrill 1931, pan syrthiodd maen awyr (neu &#039;[[Carreg fellt|garreg fellt]]&#039;) i&#039;r ddaear ar dir fferm Coch-y-bug wedi sŵn aruthrol dros ardal eang. Dyma beth mae&#039;r cylchgrawn &#039;&#039;&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;[[&lt;/del&gt;Y Gwyddonydd&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;]]&lt;/del&gt;&#039;&#039; yn ei ddweud am y lle y glaniodd y garreg fellt:&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Mae Pontllyfni yn enwog hefyd ym myd seryddiaeth am ddigwyddiad ym mis Ebrill 1931, pan syrthiodd maen awyr (neu &#039;[[Carreg fellt|garreg fellt]]&#039;) i&#039;r ddaear ar dir fferm Coch-y-bug wedi sŵn aruthrol dros ardal eang. Dyma beth mae&#039;r cylchgrawn &#039;&#039;Y Gwyddonydd&#039;&#039; yn ei ddweud am y lle y glaniodd y garreg fellt:&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&amp;#039;&amp;#039;&amp;quot;Disgynnodd bedwar cam o&amp;#039;r lle yr oedd gŵr y fferm, y diweddar John Lloyd Jones a&amp;#039;i fab John Aneuryn Jones, yn sefyll, ac fe suddodd droedfedd mewn daear galed. Pan dyn-nwyd ef allan o&amp;#039;r twll yr oedd yn gynnes ac o liw llwyd-las.&amp;quot;&amp;#039;&amp;#039;&amp;lt;ref&amp;gt;[http://welshjournals.llgc.org.uk/browse/viewpage/llgc-id:1394134/llgc-id:1403557/llgc-id:1403658/getText &amp;#039;&amp;#039;Y Gwyddonydd&amp;#039;&amp;#039;]&amp;lt;/ref&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&amp;#039;&amp;#039;&amp;quot;Disgynnodd bedwar cam o&amp;#039;r lle yr oedd gŵr y fferm, y diweddar John Lloyd Jones a&amp;#039;i fab John Aneuryn Jones, yn sefyll, ac fe suddodd droedfedd mewn daear galed. Pan dyn-nwyd ef allan o&amp;#039;r twll yr oedd yn gynnes ac o liw llwyd-las.&amp;quot;&amp;#039;&amp;#039;&amp;lt;ref&amp;gt;[http://welshjournals.llgc.org.uk/browse/viewpage/llgc-id:1394134/llgc-id:1403557/llgc-id:1403658/getText &amp;#039;&amp;#039;Y Gwyddonydd&amp;#039;&amp;#039;]&amp;lt;/ref&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Bu cryn helbul wedyn hefyd wrth i&#039;r &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;[[Yr &lt;/del&gt;Amgueddfa &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Brydeinig|Amgueddfa Brydeinig]] geiso &lt;/del&gt;prynu&#039;r garreg fellt gan y perchennog newydd, Mr John R Jones o ardal &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;[[&lt;/del&gt;Llanrhystud&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;]] &lt;/del&gt;- gwrthododd yntau&#039;i werthu. Ym 1977 cyflwynodd y garreg i&#039;r amgueddfa. Sonnir am y garreg fellt fel &quot;&#039;&#039;The Pontllyfni meteorite&#039;&#039;&quot; yn y papurau seryddol - ond dan y sillafiad amgen &#039;Pontlyfni&#039; yn aml y&#039;i rhestrir. Dim ond dwy garreg fellt sydd erioed wedi taro&#039;r ddaear yng Nghymru i sicrwydd: y naill ym &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Mhontllyfni &lt;/del&gt;a&#039;r llall tua bymtheg milltir i ffwrdd ochr bella crib Nantlle, ym &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;[[Beddgelert|&lt;/del&gt;Meddgelert&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;]] &lt;/del&gt;ym 1949.&amp;lt;ref&amp;gt;[http://www.jonesbryn.plus.com/wastronhist/meteorites.html Gwefan Bryn Jones]&amp;lt;/ref&amp;gt;&amp;lt;ref&amp;gt;Gwybodaeth gan Wicipedia&amp;lt;/ref&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Bu cryn helbul wedyn hefyd wrth i&#039;r Amgueddfa &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Brydeiniggeisio &lt;/ins&gt;prynu&#039;r garreg fellt gan y perchennog newydd, Mr John R Jones o ardal Llanrhystud - gwrthododd yntau&#039;i werthu. Ym 1977 cyflwynodd y garreg i&#039;r amgueddfa. Sonnir am y garreg fellt fel &quot;&#039;&#039;The Pontllyfni meteorite&#039;&#039;&quot; yn y papurau seryddol - ond dan y sillafiad amgen &#039;Pontlyfni&#039; yn aml y&#039;i rhestrir. Dim ond dwy garreg fellt sydd erioed wedi taro&#039;r ddaear yng Nghymru i sicrwydd: y naill ym &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Mhontlyfni &lt;/ins&gt;a&#039;r llall tua bymtheg milltir i ffwrdd ochr bella crib Nantlle, ym Meddgelert ym 1949.&amp;lt;ref&amp;gt;[http://www.jonesbryn.plus.com/wastronhist/meteorites.html Gwefan Bryn Jones]&amp;lt;/ref&amp;gt;&amp;lt;ref&amp;gt;Gwybodaeth gan Wicipedia&amp;lt;/ref&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;{{eginyn}}&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;{{eginyn}}&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>Irion</name></author>
	</entry>
	<entry>
		<id>https://cof.canolfanuwchgwyrfai.cymru/index.php?title=Carreg_fellt_Pontlyfni&amp;diff=3583&amp;oldid=prev</id>
		<title>Irion: Crëwyd tudalen newydd yn dechrau gyda &#039;==Carreg fellt Pontllyfni== Mae Pontllyfni yn enwog hefyd ym myd seryddiaeth am ddigwyddiad ym mis Ebrill 1931, pan syrthiodd maen awyr (neu &#039;Carreg...&#039;</title>
		<link rel="alternate" type="text/html" href="https://cof.canolfanuwchgwyrfai.cymru/index.php?title=Carreg_fellt_Pontlyfni&amp;diff=3583&amp;oldid=prev"/>
		<updated>2018-06-11T09:43:21Z</updated>

		<summary type="html">&lt;p&gt;Crëwyd tudalen newydd yn dechrau gyda &amp;#039;==Carreg fellt Pontllyfni== Mae Pontllyfni yn enwog hefyd ym myd &lt;a href=&quot;/index.php?title=Seryddiaeth&amp;amp;action=edit&amp;amp;redlink=1&quot; class=&quot;new&quot; title=&quot;Seryddiaeth (nid yw&amp;#039;r dudalen yn bodoli)&quot;&gt;seryddiaeth&lt;/a&gt; am ddigwyddiad ym mis Ebrill 1931, pan syrthiodd maen awyr (neu &amp;#039;Carreg...&amp;#039;&lt;/p&gt;
&lt;p&gt;&lt;b&gt;Tudalen newydd&lt;/b&gt;&lt;/p&gt;&lt;div&gt;==Carreg fellt Pontllyfni==&lt;br /&gt;
Mae Pontllyfni yn enwog hefyd ym myd [[seryddiaeth]] am ddigwyddiad ym mis Ebrill 1931, pan syrthiodd maen awyr (neu &amp;#039;[[Carreg fellt|garreg fellt]]&amp;#039;) i&amp;#039;r ddaear ar dir fferm Coch-y-bug wedi sŵn aruthrol dros ardal eang. Dyma beth mae&amp;#039;r cylchgrawn &amp;#039;&amp;#039;[[Y Gwyddonydd]]&amp;#039;&amp;#039; yn ei ddweud am y lle y glaniodd y garreg fellt:&lt;br /&gt;
&lt;br /&gt;
&amp;#039;&amp;#039;&amp;quot;Disgynnodd bedwar cam o&amp;#039;r lle yr oedd gŵr y fferm, y diweddar John Lloyd Jones a&amp;#039;i fab John Aneuryn Jones, yn sefyll, ac fe suddodd droedfedd mewn daear galed. Pan dyn-nwyd ef allan o&amp;#039;r twll yr oedd yn gynnes ac o liw llwyd-las.&amp;quot;&amp;#039;&amp;#039;&amp;lt;ref&amp;gt;[http://welshjournals.llgc.org.uk/browse/viewpage/llgc-id:1394134/llgc-id:1403557/llgc-id:1403658/getText &amp;#039;&amp;#039;Y Gwyddonydd&amp;#039;&amp;#039;]&amp;lt;/ref&amp;gt;&lt;br /&gt;
&lt;br /&gt;
Bu cryn helbul wedyn hefyd wrth i&amp;#039;r [[Yr Amgueddfa Brydeinig|Amgueddfa Brydeinig]] geiso prynu&amp;#039;r garreg fellt gan y perchennog newydd, Mr John R Jones o ardal [[Llanrhystud]] - gwrthododd yntau&amp;#039;i werthu. Ym 1977 cyflwynodd y garreg i&amp;#039;r amgueddfa. Sonnir am y garreg fellt fel &amp;quot;&amp;#039;&amp;#039;The Pontllyfni meteorite&amp;#039;&amp;#039;&amp;quot; yn y papurau seryddol - ond dan y sillafiad amgen &amp;#039;Pontlyfni&amp;#039; yn aml y&amp;#039;i rhestrir. Dim ond dwy garreg fellt sydd erioed wedi taro&amp;#039;r ddaear yng Nghymru i sicrwydd: y naill ym Mhontllyfni a&amp;#039;r llall tua bymtheg milltir i ffwrdd ochr bella crib Nantlle, ym [[Beddgelert|Meddgelert]] ym 1949.&amp;lt;ref&amp;gt;[http://www.jonesbryn.plus.com/wastronhist/meteorites.html Gwefan Bryn Jones]&amp;lt;/ref&amp;gt;&amp;lt;ref&amp;gt;Gwybodaeth gan Wicipedia&amp;lt;/ref&amp;gt;&lt;br /&gt;
&lt;br /&gt;
{{eginyn}}&lt;br /&gt;
&lt;br /&gt;
==Cyfeiriadau==&lt;br /&gt;
&lt;br /&gt;
{{cyfeiriadau}}&lt;/div&gt;</summary>
		<author><name>Irion</name></author>
	</entry>
</feed>