Geology of the Country Between Aberystwyth and Machynlleth PDF Download
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Author: Richard Cave
Publisher: Natural Environment Research
ISBN:
Category : Science
Languages : en
Pages : 168
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Book Description
A detailed account of the geology shown on the complementary 1: 50 000 (or earlier 1: 63 360) geological map(s)
Author: Richard Cave
Publisher: Natural Environment Research
ISBN:
Category : Science
Languages : en
Pages : 168
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Book Description
A detailed account of the geology shown on the complementary 1: 50 000 (or earlier 1: 63 360) geological map(s)
Author: W. T. Pratt
Publisher:
ISBN:
Category : Cadair Idris (Wales)
Languages : en
Pages : 150
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Book Description
The Cadair Idris district lies at the southern edge of the Snowdonia National Park and, from the high ridges of the Cadair Idris massif to the tidal reaches of the Mawddach and Dyfi estuaries, it is an area of spectacular beauty. For many geologists it is a special place as it lies close to the heart of Sedgwick's Cambrian System. The survey of the Cadair Idris district has followed those of the Harlech, Snowdon and Bangor districts to the north and has broadened the correlation of the Cambrian and Ordovician sequences in north-west Wales.
Author: P. J. Brenchley
Publisher: Geological Society of London
ISBN: 9781862392007
Category : Science
Languages : en
Pages : 588
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Book Description
This second edition of 'The Geology of England and Wales' is considerably expanded from its predecessor, reflecting the increase in our knowledge of the region, and particularly of the offshore areas. Forty specialists have contributed to 18 chapters, which cover a time range from 700 million years ago to 200 million years into the future. A new format places all the chapters in approximately temporal order. Both offshore and economic geology now form an integral part of appropriate chapters.
Author: N. S. Robins
Publisher: Geological Society of London
ISBN: 9781862390775
Category : Science
Languages : en
Pages : 290
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Book Description
Author: J. R. Davies
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 44
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Book Description
A brief explanation of the geology shown on the relevant 1: 50 000 scale geological map(s).
Author: D.A.T. Harper
Publisher: Geological Society of London Special Publications
ISBN: 1786205882
Category : Science
Languages : en
Pages : 514
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Book Description
The Ordovician was one of the longest of the geological periods, characterized by major magmatic and tectonic activity, an immense biodiversification, swings in climate and sea levels and the first Phanerozoic mass extinction. ‘A Global Synthesis of the Ordovician System’ is presented in two volumes in The Geological Society, Special Publications. This first volume (SP532) charts the history of the Ordovician System and explores significant advances in our understanding of its biostratigraphy, including more precise calibration of its timescale with tephra chronology and regional alignments using astrochronology and cyclostratigraphy. Changes in the world’s oceans, their shifting currents and sea levels, the biogeography of their biotas and the ambient climate are described and discussed against a background of changing palaeogeography. This first volume also includes syntheses of the Ordovician geology for most European countries, including historical key areas, such as Great Britain, Baltoscandia and Bohemia. The second volume (SP533) provides synthetic aspects of the Ordovician geology of most other parts of the world.
Author: J. R. Davies
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 224
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Book Description
A detailed account of the geology shown on the complementary 1: 50 000 (or earlier 1: 63 360) geological map(s)
Author: Charles Hepworth Holland
Publisher: National Museum Wales
ISBN: 9780720004557
Category : Nature
Languages : en
Pages : 216
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Book Description
Author: J.E. Treagus
Publisher: Springer Science & Business Media
ISBN: 9401122881
Category : Science
Languages : en
Pages : 319
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Book Description
This volume deals with those sites selected as part of the Geological Conservation Review (GCR) within the southern British part of the Caledonides, that is, the paratectonic Caledonides - a Caledonian terrane without strong and pervasive deformation and metamorphism, such as occurred further north. This orogenic belt formed by long and complex processes of earth movements between 500 and 380 million years before the present (?late Cambrian to mid-Devonian times), and has been classic ground for geologists for two hundred years. It is perhaps no accident that James Hutton in 1795 chose to illustrate his geostrophic cycle (and unconformity) with three visually explicit examples of the deformation wrought on Lower Palaeozoic rocks by Caledonian events. The former Caledonian mountain chain, which can be seen today in fragmented pieces in Scandinavia, Britain and Ireland, and North America, was ultimately the result of the collision of two continental plates and the closure of a former ocean, Iapetus. Some of these fragments, including those in Scandinavia, southern Britain, and the Republic of Ireland and the Maritime Provinces of Canada, are thought to have lain on the south side of the ocean before collision: the rest of North America, northern Ireland, and Scotland are thought to have lain north of the former Iapetus.
Author: J. R. Davies
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 48
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Book Description
A brief explanation of the geology shown on the relevant 1: 50 000 scale geological map(s).
