Geological Excursions in Dyfed, South-west Wales PDF Download
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Author: Michael G. Bassett
Publisher:
ISBN:
Category : Dyfed (Wales)
Languages : en
Pages : 338
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Book Description
Author: Michael G. Bassett
Publisher:
ISBN:
Category : Dyfed (Wales)
Languages : en
Pages : 338
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Book Description
Author: Geologists' Association. South Wales Group
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 270
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Book Description
Author: Richard E. Bevins
Publisher: National Museum Wales
ISBN: 0720004039
Category : Geology
Languages : en
Pages : 151
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Book Description
Author: David J. Siveter
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 142
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Book Description
Author: Geological Society of London
Publisher: Geological Society of London
ISBN: 9781862390713
Category : Nature
Languages : en
Pages : 644
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Book Description
Author: D.J. Fettes
Publisher: Springer Science & Business Media
ISBN: 9400946546
Category : Science
Languages : en
Pages : 356
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Book Description
The Advanced Science Institute on which this publication is based took the somewhat unusual form of a geological field symposium held during late August 1984. It was designed to demonstrate to experienced earth scientists from the North Atlantic area the full range of geological phenomena encountered in the British Caledonian rocks. The ASl travelled from South Wales to the far northwest of Scotland by the route shown on the map and in doing so examined sedimentary, igneous and metamorphic rocks from Pembrokeshire (Dyfed), Cardigan (Ceridigian), Snowdonia, Anglesey, the English Lake District and the Southern Uplands and Highlands of Scotland. Thus the fifty or so participants in the ASl studied the geological history and major structures of rocks exposed on either side of the supposed Lower Palaeozoic Iapetus Ocean the British sector of which closed to the south of the present Southern Uplands. Wales (1-5) afforded insight into the nature of the late Precambrian basement of England and Wales and the relationship of sedimentary and volcanic cover sequences to this basement. The Ordovician sequence in Wales is a sample of the volcanic rocks typical of a marginal basin, and were examined in Pembrokeshire and Snowdonia. The English Lake District (6) displays rocks from an island arc also of Ordovician age.
Author: Michael G. Bassett
Publisher: University of Wales Press
ISBN: 9780585252964
Category : Science
Languages : en
Pages : 362
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Book Description
Author: A.J. Rees
Publisher: Geological Society of London
ISBN: 1862396906
Category : Science
Languages : en
Pages : 148
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Book Description
This Memoir reviews, revises and interprets the biostratigraphy, lithostratigraphy, process sedimentology, palaeoenvironments and sequence stratigraphy of the classic Cambrian succession of SW Wales. This 1250m thick clastic sedimentary succession, of Terreneuvian to Furongian age, was deposited in environments ranging from alluvial fan to mid–outer shelf. Two lithostratigraphical groups are distinguished, each comprising six formations; where possible and appropriate, original and well-known names are retained in harmony with current usage. High-resolution sequence-stratigraphical techniques, constrained by biostratigraphical data whenever possible, allow the revised lithostratigraphy to be integrated with the western Avalonian chronostratigraphy developed in maritime Canada. A twofold subdivision is recognized. Megasequence 1 (sequences 3-7) spans the Terreneuvian, C2 and much of C3, with deposition occurring in an extensional rift-like regime on an epeirogenically active platform. Sequence 8 lies at the base of Megasequence 2, which extends from late C3 into the early Ordovician, and represents passive margin sedimentation.
Author: J. G. C. Anderson
Publisher: Elsevier
ISBN: 1483293130
Category : Science
Languages : en
Pages : 337
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Book Description
The first book to cover geological excursions for the whole of the British Isles. Information on the best means of studying geology in the field in the British Isles is followed by descriptions of 194 geological itineraries based on a number of centres and a final chapter on the geology evident on 31 journeys by road, rail and coastal boat. Sketch maps indicate the routes of all the excursions with maps showing the geology of each region. These are detailed for those areas for which modern geological maps are not available.
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.
