The Lewisian: Britain's oldest rocks
The first 2,500 million years of the geological history of Britain are stored in the gneisses of the Lewisian Complex of North West Scotland. This book explores the long journey of discovery in which this history has been gradually deciphered since the end of the 19th Century when these rocks were f...
Gespeichert in:
1. Verfasser: | |
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Format: | Buch |
Sprache: | English |
Veröffentlicht: |
Edinburgh
Dunedin Academic Press
2022
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Schlagworte: | |
Zusammenfassung: | The first 2,500 million years of the geological history of Britain are stored in the gneisses of the Lewisian Complex of North West Scotland. This book explores the long journey of discovery in which this history has been gradually deciphered since the end of the 19th Century when these rocks were first investigated in detail. The usual tools of stratigraphic investigation were of no value in dealing with such a complex assemblage of highly deformed and metamorphosed rocks; there was no fossil evidence and few signs of recognisable sedimentary strata. This book charts the increasing sophistication of the geochronological and geochemical techniques used to decipher the complex. The first important breakthrough was the recognition that a set of intrusive metamorphosed dykes could be used, perhaps, to separate episodes of deformation and metamorphism that occurred before the dykes were intruded, from those that occurred subsequently. Geochronological dating methods evolved from the first relatively crude potassium-argon and uranium-lead dates in the 1950s to the present amazingly accurate lead isotope dates. Geochemical techniques have also advanced to the point when mafic igneous assemblages can be identified as having oceanic volcanic arc signatures or were the products of intra-continental magmatism. |
Beschreibung: | 356 Seiten Illustrationen, Karten, Diagramme 26 cm |
ISBN: | 9781780460987 1780460988 |
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520 | 3 | |a The first 2,500 million years of the geological history of Britain are stored in the gneisses of the Lewisian Complex of North West Scotland. This book explores the long journey of discovery in which this history has been gradually deciphered since the end of the 19th Century when these rocks were first investigated in detail. The usual tools of stratigraphic investigation were of no value in dealing with such a complex assemblage of highly deformed and metamorphosed rocks; there was no fossil evidence and few signs of recognisable sedimentary strata. This book charts the increasing sophistication of the geochronological and geochemical techniques used to decipher the complex. The first important breakthrough was the recognition that a set of intrusive metamorphosed dykes could be used, perhaps, to separate episodes of deformation and metamorphism that occurred before the dykes were intruded, from those that occurred subsequently. Geochronological dating methods evolved from the first relatively crude potassium-argon and uranium-lead dates in the 1950s to the present amazingly accurate lead isotope dates. Geochemical techniques have also advanced to the point when mafic igneous assemblages can be identified as having oceanic volcanic arc signatures or were the products of intra-continental magmatism. | |
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Datensatz im Suchindex
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author | Park, Graham |
author_GND | (DE-588)141929413 |
author_facet | Park, Graham |
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bvnumber | BV048246922 |
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ctrlnum | (OCoLC)1322808429 (DE-599)BVBBV048246922 |
discipline | Geologie / Paläontologie Geographie |
discipline_str_mv | Geologie / Paläontologie Geographie |
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id | DE-604.BV048246922 |
illustrated | Illustrated |
index_date | 2024-07-03T19:56:04Z |
indexdate | 2024-07-10T09:33:01Z |
institution | BVB |
isbn | 9781780460987 1780460988 |
language | English |
oai_aleph_id | oai:aleph.bib-bvb.de:BVB01-033627286 |
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owner_facet | DE-188 |
physical | 356 Seiten Illustrationen, Karten, Diagramme 26 cm |
publishDate | 2022 |
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publishDateSort | 2022 |
publisher | Dunedin Academic Press |
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spelling | Park, Graham Verfasser (DE-588)141929413 aut The Lewisian Britain's oldest rocks Park, Graham Edinburgh Dunedin Academic Press 2022 356 Seiten Illustrationen, Karten, Diagramme 26 cm txt rdacontent n rdamedia nc rdacarrier The first 2,500 million years of the geological history of Britain are stored in the gneisses of the Lewisian Complex of North West Scotland. This book explores the long journey of discovery in which this history has been gradually deciphered since the end of the 19th Century when these rocks were first investigated in detail. The usual tools of stratigraphic investigation were of no value in dealing with such a complex assemblage of highly deformed and metamorphosed rocks; there was no fossil evidence and few signs of recognisable sedimentary strata. This book charts the increasing sophistication of the geochronological and geochemical techniques used to decipher the complex. The first important breakthrough was the recognition that a set of intrusive metamorphosed dykes could be used, perhaps, to separate episodes of deformation and metamorphism that occurred before the dykes were intruded, from those that occurred subsequently. Geochronological dating methods evolved from the first relatively crude potassium-argon and uranium-lead dates in the 1950s to the present amazingly accurate lead isotope dates. Geochemical techniques have also advanced to the point when mafic igneous assemblages can be identified as having oceanic volcanic arc signatures or were the products of intra-continental magmatism. Historische Geologie (DE-588)4025104-4 gnd rswk-swf Metamorphes Gestein (DE-588)4114576-8 gnd rswk-swf Regionale Geologie (DE-588)117665490X gnd rswk-swf Hebriden (DE-588)4023925-1 gnd rswk-swf Schottland (DE-588)4053233-1 gnd rswk-swf Highlands (DE-588)4072495-5 gnd rswk-swf Geology / Scotland / Highlands Geology Scotland / Highlands Schottland (DE-588)4053233-1 g Highlands (DE-588)4072495-5 g Hebriden (DE-588)4023925-1 g Metamorphes Gestein (DE-588)4114576-8 s Regionale Geologie (DE-588)117665490X s Historische Geologie (DE-588)4025104-4 s DE-604 |
spellingShingle | Park, Graham The Lewisian Britain's oldest rocks Historische Geologie (DE-588)4025104-4 gnd Metamorphes Gestein (DE-588)4114576-8 gnd Regionale Geologie (DE-588)117665490X gnd |
subject_GND | (DE-588)4025104-4 (DE-588)4114576-8 (DE-588)117665490X (DE-588)4023925-1 (DE-588)4053233-1 (DE-588)4072495-5 |
title | The Lewisian Britain's oldest rocks |
title_auth | The Lewisian Britain's oldest rocks |
title_exact_search | The Lewisian Britain's oldest rocks |
title_exact_search_txtP | The Lewisian Britain's oldest rocks |
title_full | The Lewisian Britain's oldest rocks Park, Graham |
title_fullStr | The Lewisian Britain's oldest rocks Park, Graham |
title_full_unstemmed | The Lewisian Britain's oldest rocks Park, Graham |
title_short | The Lewisian |
title_sort | the lewisian britain s oldest rocks |
title_sub | Britain's oldest rocks |
topic | Historische Geologie (DE-588)4025104-4 gnd Metamorphes Gestein (DE-588)4114576-8 gnd Regionale Geologie (DE-588)117665490X gnd |
topic_facet | Historische Geologie Metamorphes Gestein Regionale Geologie Hebriden Schottland Highlands |
work_keys_str_mv | AT parkgraham thelewisianbritainsoldestrocks |