Geology of the Country Around Snowdon PDF Download
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Author: Malcolm Fletcher Howells
Publisher: Stationery Office Books (TSO)
ISBN:
Category : Science
Languages : en
Pages : 132
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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: Malcolm Fletcher Howells
Publisher: Stationery Office Books (TSO)
ISBN:
Category : Science
Languages : en
Pages : 132
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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: Charles Bertie Wedd
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 212
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Book Description
Author: Charles Bertie Wedd
Publisher:
ISBN:
Category : Coal
Languages : en
Pages : 216
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Book Description
Author: Edward P. F. Rose
Publisher: Geological Society of London
ISBN: 9781862390652
Category : History
Languages : en
Pages : 520
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Book Description
Records lessons learnt from miltary experience in World War I and II. It also contains perspectives from America which show how, in warfare, military geologists irrespective of nationality have pursued tactical and strategic terrain analysis, fortifications and tunnelling, and resource acquisition, defence installations, and field constructions and logistics. It shows how in peace-time military geologists train for wartime operations and may be involved in peace-keeping and nation-building deployments.
Author: Charles Bertie Wedd
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 270
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Book Description
Author: A. W. A. Rushton
Publisher: Geological Society of London
ISBN: 9781862393325
Category : Science
Languages : en
Pages : 68
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Book Description
This work reviews the correlation of the British and Irish Cambrian with the current (though incomplete) international standard for the Cambrian. Since the earlier edition of 1972, the basal and upper limits of the Cambrian system have been internationally agreed; so this account excludes Tremadocian rocks but includes some that were formerly considered Neoproterozoic. Half of the series and stage subdivisions are internationally agreed, but for the undefined divisions of the Cambrian the standard used here makes use of data from Avalonian successions. Since the first edition was published, almost every aspect of the Cambrian in the British Isles has been subjected to new study. Here, the plate tectonic make-up of the British Isles is reviewed, new radiometric ages and isotopic studies are summarized and the biostratigraphy is enhanced by the study of acritarchs, especially in the Irish successions.
Author: Richard A. Fortey
Publisher: Geological Society of London
ISBN: 9781862390690
Category : Science
Languages : en
Pages : 92
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Book Description
&Quot;This Report is revised and expanded from the 1972 publication, providing an up-to-the-minute account of the British Ordovician formations and their correlation nationally and internationally. It also includes the most comprehensive treatment of Ireland ever attempted. The reference list is a comprehensive bibliography of papers on the subject published since 1970.". "This Special Report will be a valuable reference for research and applied geoscientists working with rocks of Ordovician age. It will be of particular interest to those working in, or visiting, the Welsh mountains and the English Lake District."--BOOK JACKET.
Author: Richard E. Bevins
Publisher: National Museum Wales
ISBN: 0720004039
Category : Geology
Languages : en
Pages : 151
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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.
