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Marros Group information


Marros Group
Stratigraphic range: Namurian
Sandstones and interbedded mudstones of the Telpyn Point Sandstone Formation, Haroldston Chins, St Bride's Bay
TypeGroup
Sub-unitsAberkenfig Formation, Bishopston Formation, Twrch Sandstone Formation, Telpyn Point Sandstone Formation
UnderliesCoal Measures Group
OverliesPembroke Limestone Group
Thickness20 m to 750 m
Lithology
Primarymudstone sandstone
Otherchert, limestone
Location
CountryWales
ExtentSouth Wales Coalfield, Pembrokeshire

The Marros Group is the name given to a suite of rocks of Namurian age laid down during the Carboniferous Period in South Wales. These rocks were formerly known as the Millstone Grit Series but are now distinguished from the similar but geographically separate rock sequences of the Pennines and Peak District of northern England and northeast Wales by this new name.

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Marros Group

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The Marros Group is the name given to a suite of rocks of Namurian age laid down during the Carboniferous Period in South Wales. These rocks were formerly...

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Geology of the Gower Peninsula

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recognised as the Millstone Grit Series, though referred to today as the Marros Group in South Wales. The expansion of tropical forests across the region at...

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Geology of Monmouthshire

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turn are overlain, in the west, by the sandstones and mudstones of the Marros Group (formerly referred to as the 'Millstone Grit series') and lastly by the...

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Marros Sands

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Marros Sands is a beach in Carmarthenshire between Amroth and Pendine and to the south of the small settlement of Marros. The beach is separated from Amroth...

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Millstone Grit

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recently been formally renamed by the British Geological Survey as the Marros Group. The thickest bed of sandstone within it was known as the Basal Grit...

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Geology of Brecon Beacons National Park

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Taf Fechan associated with faulting along the Neath Disturbance. The Marros Group is the modern name for the South Walian rock sequence traditionally referred...

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Geology of Carmarthenshire

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sinks on the northern margin of the limestone outcrop east of Marros. The Marros Group is the modern formal name used in South Wales for what was traditionally...

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Geology of Pembrokeshire

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a band of country from Ragwen Point west-northwest via Marros Mountain (the locality of Marros, after which the sequence is named, is just in Carmarthenshire...

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Henrhyd Falls

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sandstone are part of the Bishopston Mudstone Formation included within the Marros Group, the modern name in South Wales for the assemblage of strata that was...

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Telpyn Point

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being given to the Telpyn Point Sandstone Formation, a sub-unit of the Marros Group, the modern scientific name for the Millstone Grit series of South Wales...

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South Wales Coal Measures Group

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Formation. In South Wales, the South Wales Coal Measures Group is preceded (underlain) by the Marros Group which is of Namurian age though in southeast England...

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Cribarth

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rocks and the Namurian age Twrch Sandstone (former 'Basal Grit') of the Marros Group (former 'Millstone Grit Series'), also dating from the Carboniferous...

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Coal Measures Group

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Formation in the overlying Warwickshire Group. The South Wales Coal Measures Group is preceded (underlain) by the Marros Group. http://www.bgs.ac.uk/Lexicon/lexicon...

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Garreg Las

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Sandstone, a coarse sandstone (formerly known as the Basal Grit) of the Marros Group (formerly the Millstone Grit Series) which was laid down during the Carboniferous...

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Farewell Rock

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sandstones at the boundary of the Coal Measures with the underlying Marros Group in South Wales. Once thought to be a single sandstone, it is now accepted...

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Mynydd Machen

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Lower Coal Measures Formation Marros Group Bishopston Mudstone Formation Twrch Sandstone Formation Pembroke Limestone Group The summit of the hill is formed...

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Moel Penderyn

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rocks and the overlying Twrch Sandstone (former 'Basal Grit') of the Marros Group (former 'Millstone Grit Series'), also of Carboniferous age. It lies...

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Penmoelallt

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sandstones of the Twrch sandstone (formerly the 'Basal Grit') of the Marros Group (former 'Millstone Grit Series') whilst the southernmost slopes are formed...

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Tair Carn Uchaf

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from blocks of the Twrch Sandstone (formerly the 'Basal Grit') of the Marros Group (former 'Millstone Grit Series') deposited during the Carboniferous period...

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List of geological groups of Great Britain

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are grouped into 'members', members are grouped into 'formations', formations into 'groups' and groups occasionally into 'supergroups'. Some groups are...

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Pembroke Limestone Group

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The Pembroke Limestone Group is a stratigraphic unit of Courceyan to Brigantian age (Early Carboniferous) found in southern Wales and northern Somerset...

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Scientology front groups

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groups are those groups named or operated in such a way as to disguise their association with the Church of Scientology (COS). COS uses front groups to...

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Foel Fraith

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Twrch Sandstone (formerly known as the 'Basal Grit') of the overlying Marros Group, but also dating from the Carboniferous period. In common with the regional...

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Santa Rosa de Lima Cartel

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families. Its financial operators are presumed to be the uncles of "El Marro", with Santiago "G" aka "Bachicha" the main operator. The authorities also...

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The Early November

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debut EP, releasing it two months later. Simultaneously, guitarist Joseph Marro joined the band in exchange for Dubitsky. Throughout 2003, the band continued...

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