Author: Clement Reid
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 144
Book Description
The Geology of the Country Around Padstow and Camelford
Author: Clement Reid
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 144
Book Description
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 144
Book Description
Scientific and Learned Societies of Great Britain
Author:
Publisher:
ISBN:
Category : Learned institutions and societies
Languages : en
Pages : 392
Book Description
Publisher:
ISBN:
Category : Learned institutions and societies
Languages : en
Pages : 392
Book Description
Igneous Rocks of South-West England
Author: P.A. Floyd
Publisher: Springer Science & Business Media
ISBN: 9780412488504
Category : Science
Languages : en
Pages : 280
Book Description
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.
Publisher: Springer Science & Business Media
ISBN: 9780412488504
Category : Science
Languages : en
Pages : 280
Book Description
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.
Proceedings of the Geologists' Association
Author: Geologists' Association
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 388
Book Description
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 388
Book Description
The Geology of the South Wales Coal-field ...
Author: Geological Survey of Great Britain
Publisher:
ISBN:
Category : Coal
Languages : en
Pages : 748
Book Description
Publisher:
ISBN:
Category : Coal
Languages : en
Pages : 748
Book Description
Natural History Reprt
Author:
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 230
Book Description
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 230
Book Description
The Geology of the South Wales Coalfield
Author: E. E. L. Dixon
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 246
Book Description
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 246
Book Description
Proceedings of the Royal Society of Edinburgh
Author: Royal Society of Edinburgh
Publisher:
ISBN:
Category : Biology
Languages : en
Pages : 486
Book Description
Publisher:
ISBN:
Category : Biology
Languages : en
Pages : 486
Book Description
Natural History Report ....
Author:
Publisher:
ISBN:
Category : Natural history
Languages : en
Pages : 318
Book Description
Publisher:
ISBN:
Category : Natural history
Languages : en
Pages : 318
Book Description
The National Union Catalog, Pre-1956 Imprints
Author: Library of Congress
Publisher:
ISBN:
Category : Catalogs, Union
Languages : en
Pages : 710
Book Description
Publisher:
ISBN:
Category : Catalogs, Union
Languages : en
Pages : 710
Book Description