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- Cymru_Terrane abstract "The Cymru Terrane is one of five inferred fault bounded terranes that make up the basement rocks of the southern United Kingdom. The other notable geological terranes are the Charnwood Terrane, Fenland Terrane, Wrekin Terrane and the Monian Composite Terrane. In this article the definition of terrane is that implying rocks associated with the composition of the Precambrian basement. The Cymru Terrane is bounded to the northwest by the Menai Strait Fault System and to the southeast by the Pontesford Lineament. The geological terrane to the west is the Monian Composite Terrane and to the east is Wrekin Terrane. The majority of rocks in the area are associated with the outcrops that are evident at the faulted boundaries.The Proterozoic rocks of the Cymru Terrane are typified in North Wales by the Arfon Group, Sarn Complex and the Twt Hill Granite. The former is in the Bangor area (S & SW) with the latter two located on the Llyn Peninsula. The St Davids Granophyre and the Pebidian Supergroup are located on the coastline of St Davids Peninsula. Inferred Proterozoic volcanic deposits are noted in the Bryn-Teg Borehole (Trawsfynydd, Gwynedd).The Padarn Tuff, which is thought to be contemporaneous with the Sarn Complex, is unconformable with the overlying Fachwen Formation and the unconformity has been constrained with dates noted of 604.7 Ma+/-1.6Ma from the tuffs and 572.5 Ma+/-1.2Ma from the Fachwen Formation. Information on the basement is somewhat sparse with no zircons noted to be older than 617 to 638 Ma. However, there are outcrops of the Parwyd Gneiss which are retrogressed granitoid gneiss and garnet amphibolite that occur with the Llyn Shear Zone. This is conjectured to be one of two probabilities, either as an exotic sliver, or as a metamorphic slice from the Monian Composite Terrane. The Granitoid Gneiss has Sm-Nd ages of 1350 Ma which is in the same temporal region as the Sarn Granite".
- Cymru_Terrane wikiPageExternalLink Wales.html.
- Cymru_Terrane wikiPageID "35766051".
- Cymru_Terrane wikiPageLength "18739".
- Cymru_Terrane wikiPageOutDegree "101".
- Cymru_Terrane wikiPageRevisionID "679250363".
- Cymru_Terrane wikiPageWikiLink Alaskite.
- Cymru_Terrane wikiPageWikiLink Amphibolite.
- Cymru_Terrane wikiPageWikiLink Anglesey.
- Cymru_Terrane wikiPageWikiLink Archibald_Geikie.
- Cymru_Terrane wikiPageWikiLink Arenig.
- Cymru_Terrane wikiPageWikiLink Arfon_Group.
- Cymru_Terrane wikiPageWikiLink Bangor,_Gwynedd.
- Cymru_Terrane wikiPageWikiLink Basalt.
- Cymru_Terrane wikiPageWikiLink Basaltic.
- Cymru_Terrane wikiPageWikiLink Basement_(geology).
- Cymru_Terrane wikiPageWikiLink Breccia.
- Cymru_Terrane wikiPageWikiLink Caernarfon.
- Cymru_Terrane wikiPageWikiLink Cambrian.
- Cymru_Terrane wikiPageWikiLink Category:Articles_which_contain_graphical_timelines.
- Cymru_Terrane wikiPageWikiLink Category:Ediacaran_geology.
- Cymru_Terrane wikiPageWikiLink Category:Geology_of_Wales.
- Cymru_Terrane wikiPageWikiLink Category:Precambrian_Europe.
- Cymru_Terrane wikiPageWikiLink Category:Terranes.
- Cymru_Terrane wikiPageWikiLink Charnwood_Terrane.
- Cymru_Terrane wikiPageWikiLink Columnar_jointing.
- Cymru_Terrane wikiPageWikiLink Conglomerate_(geology).
- Cymru_Terrane wikiPageWikiLink Coomb_Volcanic_Formation.
- Cymru_Terrane wikiPageWikiLink Diorite.
- Cymru_Terrane wikiPageWikiLink Ediacaran_biota.
- Cymru_Terrane wikiPageWikiLink Epiclastic.
- Cymru_Terrane wikiPageWikiLink Fachwen_Formation.
- Cymru_Terrane wikiPageWikiLink Facies.
- Cymru_Terrane wikiPageWikiLink Fauna.
- Cymru_Terrane wikiPageWikiLink Felsic.
- Cymru_Terrane wikiPageWikiLink Fenland_Terrane.
- Cymru_Terrane wikiPageWikiLink Foraminifera.
- Cymru_Terrane wikiPageWikiLink Gabbro.
- Cymru_Terrane wikiPageWikiLink Garnet.
- Cymru_Terrane wikiPageWikiLink Geologic_time_scale.
- Cymru_Terrane wikiPageWikiLink Geologic_timescale.
- Cymru_Terrane wikiPageWikiLink Gneiss.
- Cymru_Terrane wikiPageWikiLink Graben.
- Cymru_Terrane wikiPageWikiLink Granite.
- Cymru_Terrane wikiPageWikiLink Granitoid.
- Cymru_Terrane wikiPageWikiLink Granitoid_Gneiss.
- Cymru_Terrane wikiPageWikiLink Granodiorite.
- Cymru_Terrane wikiPageWikiLink Granophyre.
- Cymru_Terrane wikiPageWikiLink Granophyric_texture.
- Cymru_Terrane wikiPageWikiLink Greenschist.
- Cymru_Terrane wikiPageWikiLink Gwynedd.
- Cymru_Terrane wikiPageWikiLink Half-graben.
- Cymru_Terrane wikiPageWikiLink Harlech_Dome.
- Cymru_Terrane wikiPageWikiLink Harlech_Grits_Group.
- Cymru_Terrane wikiPageWikiLink Henry_Hicks_(geologist).
- Cymru_Terrane wikiPageWikiLink Lava.
- Cymru_Terrane wikiPageWikiLink Leucocratic.
- Cymru_Terrane wikiPageWikiLink Leucogranite.
- Cymru_Terrane wikiPageWikiLink Lithology.
- Cymru_Terrane wikiPageWikiLink Llanberis_Slates.
- Cymru_Terrane wikiPageWikiLink Llyn_Padarn.
- Cymru_Terrane wikiPageWikiLink Llyn_Peninsula.
- Cymru_Terrane wikiPageWikiLink Llyn_Shear_Zone.
- Cymru_Terrane wikiPageWikiLink Llŷn_Peninsula.
- Cymru_Terrane wikiPageWikiLink Menai_Strait_Fault_System.
- Cymru_Terrane wikiPageWikiLink Metamorphism.
- Cymru_Terrane wikiPageWikiLink Monian_Composite_Terrane.
- Cymru_Terrane wikiPageWikiLink Monzogranite.
- Cymru_Terrane wikiPageWikiLink Neoproterozoic.
- Cymru_Terrane wikiPageWikiLink Padarn_Tuff.
- Cymru_Terrane wikiPageWikiLink Parwyd_Gneiss.
- Cymru_Terrane wikiPageWikiLink Pebidian_Supergroup.
- Cymru_Terrane wikiPageWikiLink Pluton.
- Cymru_Terrane wikiPageWikiLink Pontesford_Lineament.
- Cymru_Terrane wikiPageWikiLink Potassium_feldspar.
- Cymru_Terrane wikiPageWikiLink Precambrian.
- Cymru_Terrane wikiPageWikiLink Proterozoic.
- Cymru_Terrane wikiPageWikiLink Quartz.
- Cymru_Terrane wikiPageWikiLink Regional_metamorphism.
- Cymru_Terrane wikiPageWikiLink Rhyolite.
- Cymru_Terrane wikiPageWikiLink Sarn_Complex.
- Cymru_Terrane wikiPageWikiLink Sarn_Granite.
- Cymru_Terrane wikiPageWikiLink Schist.
- Cymru_Terrane wikiPageWikiLink Scoria.
- Cymru_Terrane wikiPageWikiLink Sir_Archibald_Geikie.
- Cymru_Terrane wikiPageWikiLink St_Davids.
- Cymru_Terrane wikiPageWikiLink St_Davids_Granophyre.
- Cymru_Terrane wikiPageWikiLink St_David’s.
- Cymru_Terrane wikiPageWikiLink Terrane.
- Cymru_Terrane wikiPageWikiLink Trawsfynydd.
- Cymru_Terrane wikiPageWikiLink Trondhjemite.
- Cymru_Terrane wikiPageWikiLink Tuff.
- Cymru_Terrane wikiPageWikiLink Twt_Hill_Granite.
- Cymru_Terrane wikiPageWikiLink Unconformity.
- Cymru_Terrane wikiPageWikiLink Volcanic_arc.
- Cymru_Terrane wikiPageWikiLink Wrekin_Terrane.
- Cymru_Terrane wikiPageWikiLink Zircon.
- Cymru_Terrane wikiPageWikiLinkText "Cymru Terrane".
- Cymru_Terrane hasPhotoCollection Cymru_Terrane.
- Cymru_Terrane wikiPageUsesTemplate Template:Reflist.