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Carboniferous Limestone
Carboniferous Limestone is a collective term for the succession of limestones occurring widely throughout Great Britain and Ireland that were deposited during the Dinantian Epoch of the Carboniferous Period. These rocks formed between 363 and 325 million years ago. Within England and Wales, the entire limestone succession, which includes subordinate mudstones and some thin sandstones, is known as the Carboniferous Limestone Supergroup. Depositional basins Within Great Britain the suite of rocks known traditionally as the Carboniferous Limestone Series was deposited as marine sediments in three distinct ‘provinces’ separated by contemporary landmasses. One of these landmasses was the Wales-London-Brabant Massif, an east–west aligned belt of land stretching through central Wales and the English Midlands to East Anglia and on into Belgium. The limestones deposited to its south form a distinct South Wales-Mendip province which extends from Pembrokeshire in the west through ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carboniferous Jurassic Unconformity Ogmore
The Carboniferous ( ) is a geologic period and system of the Paleozoic that spans 60 million years from the end of the Devonian Period million years ago ( Mya), to the beginning of the Permian Period, million years ago. The name ''Carboniferous'' means "coal-bearing", from the Latin '' carbō'' ("coal") and '' ferō'' ("bear, carry"), and refers to the many coal beds formed globally during that time. The first of the modern 'system' names, it was coined by geologists William Conybeare and William Phillips in 1822, based on a study of the British rock succession. The Carboniferous is often treated in North America as two geological periods, the earlier Mississippian and the later Pennsylvanian. Terrestrial animal life was well established by the Carboniferous Period. Tetrapods (four limbed vertebrates), which had originated from lobe-finned fish during the preceding Devonian, became pentadactylous in and diversified during the Carboniferous, including early amphibian lineages ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Powys
Powys (; ) is a Local government in Wales#Principal areas, county and Preserved counties of Wales, preserved county in Wales. It is named after the Kingdom of Powys which was a Welsh succession of states, successor state, petty kingdom and principality that emerged during the Middle Ages following the end of Roman rule in Britain. Geography Powys covers the historic counties of Montgomeryshire and Radnorshire, most of Brecknockshire, and part of Denbighshire (historic), historic Denbighshire. With an area of about , it is now the largest administrative area in Wales by land and area (Dyfed was until 1996 before several Preserved counties of Wales, former counties created by the Local Government Act 1972 were abolished). It is bounded to the north by Gwynedd, Denbighshire and Wrexham County Borough; to the west by Ceredigion and Carmarthenshire; to the east by Shropshire and Herefordshire; and to the south by Rhondda Cynon Taf, Merthyr Tydfil County Borough, Caerphilly County Bor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Berwickshire
Berwickshire ( gd, Siorrachd Bhearaig) is a historic county, registration county and lieutenancy area in south-eastern Scotland, on the English border. Berwickshire County Council existed from 1890 until 1975, when the area became part of the Borders region, with most of the historic county becoming part of the lower-tier Berwickshire district. Berwickshire district was abolished in 1996, when all the districts in the Borders region merged to become the Scottish Borders council area. The county takes its name from Berwick-upon-Tweed, its original county town, which was part of Scotland at the time of the county's formation in the twelfth century, but became part of England in 1482 after several centuries of swapping back and forth between the two kingdoms. After the loss of Berwick, Duns and Greenlaw both served as county town at different periods. The low-lying part of Berwickshire between the Tweed and the Lammermuirs is known as "the Merse", from an old Scots word for a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lothian
Lothian (; sco, Lowden, Loudan, -en, -o(u)n; gd, Lodainn ) is a region of the Scottish Lowlands, lying between the southern shore of the Firth of Forth and the Lammermuir Hills and the Moorfoot Hills. The principal settlement is the Scottish capital, Edinburgh, while other significant towns include Livingston, Linlithgow, Bathgate, Queensferry, Dalkeith, Bonnyrigg, Penicuik, Musselburgh, Prestonpans, North Berwick, Dunbar, Whitburn and Haddington. Historically, the term Lothian referred to a province encompassing most of what is now southeastern Scotland. In the 7th century it came under the control of the Anglian kingdom of Bernicia, the northern part of the later kingdom of Northumbria, but the Angles' grip on Lothian was quickly weakened following the Battle of Nechtansmere in which they were defeated by the Picts. Lothian was annexed to the Kingdom of Scotland around the 10th century. Subsequent Scottish history saw the region subdivided into three counties— ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fife
Fife (, ; gd, Fìobha, ; sco, Fife) is a council area, historic county, registration county and lieutenancy area of Scotland. It is situated between the Firth of Tay and the Firth of Forth, with inland boundaries with Perth and Kinross (i.e. the historic counties of Perthshire and Kinross-shire) and Clackmannanshire. By custom it is widely held to have been one of the major Pictish kingdoms, known as ''Fib'', and is still commonly known as the Kingdom of Fife within Scotland. A person from Fife is known as a ''Fifer''. In older documents the county was very occasionally known by the anglicisation Fifeshire. Fife is Scotland's third largest local authority area by population. It has a resident population of just under 367,000, over a third of whom live in the three principal towns, Dunfermline, Kirkcaldy and Glenrothes. The historic town of St Andrews is located on the northeast coast of Fife. It is well known for the University of St Andrews, the most ancient univers ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Isle Of Arran
The Isle of Arran (; sco, Isle o Arran; gd, Eilean Arainn) or simply Arran is an island off the west coast of Scotland. It is the largest island in the Firth of Clyde and the seventh-largest Scottish island, at . Historically part of Buteshire, it is in the unitary council area of North Ayrshire. In the 2011 census it had a resident population of 4,629. Though culturally and physically similar to the Hebrides, it is separated from them by the Kintyre peninsula. Often referred to as "Scotland in Miniature", the island is divided into highland and lowland areas by the Highland Boundary Fault and has been described as a "geologist's paradise".Haswell-Smith (2004) pp. 11–17. Arran has been continuously inhabited since the early Neolithic period. Numerous prehistoric remains have been found. From the 6th century onwards, Goidelic-speaking peoples from Ireland colonised it and it became a centre of religious activity. In the troubled Viking Age, Arran became the property of t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ayrshire
Ayrshire ( gd, Siorrachd Inbhir Àir, ) is a historic county and registration county in south-west Scotland, located on the shores of the Firth of Clyde. Its principal towns include Ayr, Kilmarnock and Irvine and it borders the counties of Renfrewshire and Lanarkshire to the north-east, Dumfriesshire to the south-east, and Kirkcudbrightshire and Wigtownshire to the south. Like many other counties of Scotland it currently has no administrative function, instead being sub-divided into the council areas of North Ayrshire, South Ayrshire and East Ayrshire. It has a population of approximately 366,800. The electoral and valuation area named Ayrshire covers the three council areas of South Ayrshire, East Ayrshire and North Ayrshire, therefore including the Isle of Arran, Great Cumbrae and Little Cumbrae. These three islands are part of the historic County of Bute and are sometimes included when the term ''Ayrshire'' is applied to the region. The same area is known as ''Ayrshire a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Central Lowlands
The Central Lowlands, sometimes called the Midland Valley or Central Valley, is a geologically defined area of relatively low-lying land in southern Scotland. It consists of a rift valley between the Highland Boundary Fault to the north and the Southern Uplands Fault to the south. The Central Lowlands are one of the three main geographical sub-divisions of Scotland, the other two being the Highlands and Islands which lie to the north, northwest and the Southern Uplands, which lie south of the associated second fault line. It is the most populated of Scotland’s three geographical regions. Geology and geomorphology The Central Lowlands is largely underlain by Paleozoic formations. Many of these sedimentary rocks have economic significance for it is here that the coal and iron bearing rocks that fueled Scotland's industrial revolution are to be found. This area has also experienced intense volcanism, Arthur's Seat in Edinburgh being the remnant of a once much larger volcano ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Southern Uplands
The Southern Uplands ( gd, Na Monaidhean a Deas) are the southernmost and least populous of mainland Scotland's three major geographic areas (the other two being the Central Lowlands and the Grampian Mountains and the Highlands, as illustrated in the accompanying map). The term is used both to describe the geographical region and to collectively denote the various ranges of hills and mountains within this region. An overwhelmingly rural and agricultural region, the Southern Uplands are partly forested and contain many areas of open moorland - the hill names in the area are congruent with these characteristics. Geology The Southern Uplands consist mainly of Silurian sedimentary deposits deposited in the Iapetus Ocean 420 million years ago. These rocks were pushed up from the sea bed into an accretionary wedge during the Caledonian orogeny, roughly 400 million years ago ( Ma), when the continents and terranes of Laurentia, Baltica and Avalonia collided. The Caledonian orog ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Avon Group
The Avon Group is a stratigraphic unit of Courceyan age (Lower Carboniferous) found in southern Wales and the west of England. It forms part of the Carboniferous Limestone Supergroup. The term replaces the old 'Lower limestone Shale Group' of this region. It is typically shown undivided on geological maps though three formations are identified on mapping of parts of South wales, namely the Tongwynlais, Castell Coch Limestone and Cwmyniscoy Mudstone formations as defined by Waters and Lawrence (1987). The Shirehampton Formation was recognised in the Bristol area by Barton et al (2002). The entire Avon succession is referred to as the Jackie Parr Limestone Formation (Bridge & Hough (2002)) where it outcrops at Clee Hill and Little Wenlock in Shropshire. See also *List of types of limestone This is a list of types of limestone arranged according to location. It includes both formal stratigraphic unit names and less formal designations. Africa Egypt *Tura limestone, used for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pembroke Limestone Group
The Pembroke Limestone Group is a stratigraphic unit of Courceyan to Brigantian age (Early Carboniferous) found in southern Wales and northern Somerset. It forms part of the Carboniferous Limestone Supergroup. These carbonate rocks developed in platform and ramp environments and are up to 1025m thick in places. The make-up of the Group varies from one part of the basin to another but in south Pembrokeshire it comprises the following formations: *Oystermouth Formation *Oxwich Head Limestone Formation *Stackpole Limestone Formation *Pen-y-Holt Limestone Formation *Hobbyhorse Bay Limestone Formation *Linney Head Formation *Berry Slade Limestone Formation *Black Rock Limestone Subgroup In the Tenby, Gower and Vale of Glamorgan areas, the Stackpole Formation is replaced by the Hunt's Bay Oolite Subgroup which consists of a lower/earlier Cornelly Oolite Formation and an upper/later Stormy Limestone Formation. Likewise the Linney Head to Pen-y-Holt sequence is replaced by a triparti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oxfordshire
Oxfordshire is a ceremonial and non-metropolitan county in the north west of South East England. It is a mainly rural county, with its largest settlement being the city of Oxford. The county is a centre of research and development, primarily due to the work of the University of Oxford and several notable science parks. These include the Harwell Science and Innovation Campus and Milton Park, both situated around the towns of Didcot and Abingdon-on-Thames. It is a landlocked county, bordered by six counties: Berkshire to the south, Buckinghamshire to the east, Wiltshire to the south west, Gloucestershire to the west, Warwickshire to the north west, and Northamptonshire to the north east. Oxfordshire is locally governed by Oxfordshire County Council, together with local councils of its five non-metropolitan districts: City of Oxford, Cherwell, South Oxfordshire, Vale of White Horse, and West Oxfordshire. Present-day Oxfordshire spanning the area south of the Thames was h ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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