British Geological Literature PDF Download
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Author:
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ISBN:
Category : Geology
Languages : en
Pages : 684
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Author:
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 222
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Author: British Geological Survey
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 2
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Author: Edward L. Marten
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Category :
Languages : en
Pages :
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Author: British Geological Survey
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Author:
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 684
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Book Description
Author: British Geological Survey
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 0
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Author: P.A. Floyd
Publisher: Springer Science & Business Media
ISBN: 9780412488504
Category : Science
Languages : en
Pages : 280
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This volume illustrates some of the significant aspects of magmatic activity from Devonian (408 million years ago) to early Permian (270 million years ago) times in SW England. This period covers the progressive development of the Variscan mountain-building episode, from initial basin formation to final deformation and the subsequent development of a fold mountain belt - the Variscan Orogen. Both extrusive (volcanic) and intrusive (plutonic) rocks are found in the orogen, and chart the various stages of its magmatic development. The sites described in this volume are key localities selected for conservation because they are representative of the magmatic history of the orogen from initiation to stabilization. Some of the earliest volcanic activity in the Devonian is represented by submarine basaltic and rhyolitic lavas developed in subsiding basins, caused by the attenuation of the existing continental crust. In some cases, extensive rifting and attendant magmatism produced narrow zones of true oceanic crust, whereas elsewhere basaltic volcanism is related to fractures in the continental crust at the margins of the basins. After the filling of the sedimentary basins, and their deformation caused by crustal shortening (late Carboniferous Period), further activity is manifested by the emplacement of the Cornubian granites and later minor basaltic volcanism in the early Permian. Accounts of the constituent parts of this history have enriched geological literature from the nineteenth century onwards, and have contributed to the advancement and understanding of magmatic and tectonic processes.
Author: British Geological Survey
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 84
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Author: Hugh Torrens
Publisher: Taylor & Francis
ISBN: 1040247776
Category : History
Languages : en
Pages : 386
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Book Description
Geology is the most historical of all sciences. Yet its own history remains neglected, especially the many aspects of how geology was practised in the past. This volume analyses the careers of some important practical figures in English, Welsh, Scottish and Irish geology between 1750 and 1850. These include people who would have regarded themselves more as mining engineers (or ’coal viewers' as they were then called in the vital coal industry) or ’mineral surveyors' as today's mineral prospectors were first called (from 1808), or even inventors. Their expertise, in the land which led the industrial revolution, took them all over the world. Those included here went to Italy, and South (Peru) and North America (Virginia and Canada). The practice of geology, through the search for mines and minerals, has been much less attended to by historians than the geology which was undertaken by leisured amateurs - even though practical geology was as important in the past as the oil industry is today.
