{"id":661,"date":"2024-11-22T07:18:38","date_gmt":"2024-11-22T07:18:38","guid":{"rendered":"https:\/\/caerphilly.org\/ynghylch\/daeareg\/"},"modified":"2025-02-27T22:03:26","modified_gmt":"2025-02-27T22:03:26","slug":"daeareg","status":"publish","type":"page","link":"https:\/\/caerphilly.org\/cy\/ynghylch\/daeareg\/","title":{"rendered":"Daeareg"},"content":{"rendered":"\n
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Home<\/a><\/span><\/span><\/p>\n\n\n\n

Daeareg<\/h1>\n<\/div><\/div>\n\n
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Caerphilly Carbonifferaidd<\/h2>\n\n\n\n

300 miliwn o flynyddoedd yn \u00f4l yn ystod y Cyfnod Carbonifferaidd roedd yr ardal yr ydym bellach yn ei hadnabod fel De Cymru yn gorwedd rhywle i’r de o’r cyhydedd ac wedi’i guddio mewn amodau trofannol. Am y tro cyntaf yn hanes hir y Ddaear gwladychwyd y tir gan blanhigion a oedd yn ffurfio coedwigoedd helaeth o amgylch y cyhydedd. <\/p>\n\n\n\n

Roedd y planhigion hyn yn ffynnu, yn tyfu ac yn marw’n gyflym gan gymryd llawer iawn o garbon deuocsid o’r atmosffer a’i gloi fel mawn. Ar \u00f4l miliynau o flynyddoedd cafodd y mawn ei gladdu, ei chywasgu a’i gynhesu nes iddo ddod yn glo. Mae’n cymryd 11 metr o fawn i ffurfio 1 metr o lo.<\/p>\n\n\n\n

Mae dros 350 miliwn o flynyddoedd o hanes daearegol yn cael eu datgelu yn y creigiau agored. Efallai y byddwch yn gallu dod o hyd i ffosilau a oedd wedi’u dal yn yr haenau o lo, mwd a charreg haearn, a ffurfiwyd pan oedd corsydd trofannol yn gorchuddio’r ardal yn y cyfnod cynhanesyddol.<\/p>\n<\/div>\n<\/div>\n\n\n\n

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Yn ystod y 1980au, dynodwyd safle pwll clai 23 erw yn SoDdGA Daearegol oherwydd y creigiau eithriadol a phwysig yn rhyngwladol Carbonifferaidd, Westphalian A, B a C Coal Measure a ddatgelwyd yma.<\/p>\n\n\n\n

Ystyrir daeareg y safle o bwysigrwydd mawr gan ei fod yn un o ddau le yn unig sydd ar \u00f4l lle gellir archwilio’r dilyniannau helaeth hyn o strata Carbonifferaidd Uchaf ac mae Coed-y-Werin wedi’i ddynodi’n Safle o Ddiddordeb Gwyddonol Arbennig (SoDdGA neu SSSI) oherwydd hyn.<\/p>\n<\/div>\n\n\n\n

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Enw’r glo yn y lleoliad hwn oddi ar Ffordd y Dram yw Wyth\u00efen Rhif 2 y Rhondda ac mae’r graig liw bras oren yn cael ei galw’n Saron Sandstone. <\/p>\n\n\n\n

Fe welwch fod y creigiau ar ongl, gan dipio yn ysgafn i’r gogledd. Yng Nghwm Nedd gellir dod o hyd i’r un ddaeareg yn dipio’n ysgafn i’r de.<\/p>\n\n\n\n

Dyma’r garreg fwd meddal sy’n gorwedd rhwng y gwythiennau glo a gloddiwyd ar gyfer gweithgynhyrchu brics.<\/p>\n\n\n\n

Cafodd glo o Dde Cymru ei gymryd ar draws y byd o borthladdoedd Caerdydd a’r Barri.<\/p>\n<\/div>\n<\/div>\n<\/div>\n\n

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Archwiliwch fwy<\/h2>\n\n\n\n
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Hanes<\/a><\/h3>\n<\/div>\n\n\n\n
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Bywyd gwyllt<\/a><\/h3>\n<\/div>\n\n\n\n
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Coed, Planhigion a Ffyngau<\/a><\/h3>\n<\/div>\n<\/div>\n<\/div>\n\n
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Ymweld \u00e2 Choed Y Werin<\/h2>\n\n\n\n

Mae Coed-y-Werin yn lle i bawb. Mae\u2019n cynnig hafan i fywyd gwyllt, mae\u2019n llawn planhigion a ffyngau, mae\u2019n datgelu miliynau o flynyddoedd o hanes daearegol ac mae llawer o enghreifftiau o hanes y safle yn sicr i\u2019w canfod.<\/p>\n\n\n\n

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Ymwelwch \u00e2 ni<\/strong><\/a><\/div>\n<\/div>\n<\/div>\n\n
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Cefnogwch ein gwaith<\/h2>\n\n\n\n

Gwnewch gyfraniad untro, dewch yn aelod, neu wirfoddolwch gyda ni<\/p>\n\n\n\n

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Dysgwch fwy<\/strong><\/a><\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

Caerphilly Carbonifferaidd 300 miliwn o flynyddoedd yn \u00f4l yn ystod y Cyfnod Carbonifferaidd roedd yr ardal yr ydym bellach yn […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":647,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"_uag_custom_page_level_css":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"disabled","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"class_list":["post-661","page","type-page","status-publish","hentry"],"acf":[],"yoast_head":"\nDaeareg - 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