Author: Marcia R. Winslow
Publisher:
ISBN:
Category : Micropaleontology
Languages : en
Pages : 170

Get Book Here

Book Description
Stratigraphic occurrence, systemic classification, and illustration of plant microfossils.

Author: Marcia R. Winslow
Publisher:
ISBN:
Category : Micropaleontology
Languages : en
Pages : 93

Get Book Here

Book Description

Author:
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 684

Get Book Here

Book Description

Author:
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 1026

Get Book Here

Book Description

Author: Geological Survey (U.S.)
Publisher:
ISBN:
Category :
Languages : en
Pages : 480

Get Book Here

Book Description

Author:
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1544

Get Book Here

Book Description

Author:
Publisher:
ISBN:
Category : Geological research
Languages : en
Pages : 328

Get Book Here

Book Description
A summary of recent scientific and economic results, accompanied by a list of publications released in fiscal 1963, a list of geologic and hydrologic investigations in progress, and a report on the status of topographic mapping.

Author: D.A.T. Harper
Publisher: Geological Society of London
ISBN: 1862393737
Category : Science
Languages : en
Pages : 485

Get Book Here

Book Description
The Early Palaeozoic was a critical interval in the evolution of marine life on our planet. Through a window of some 120 million years, the Cambrian Explosion, Great Ordovician Biodiversification Event, End Ordovician Extinction and the subsequent Silurian Recovery established a steep trajectory of increasing marine biodiversity that started in the Late Proterozoic and continued into the Devonian. Biogeography is a key property of virtually all organisms; their distributional ranges, mapped out on a mosaic of changing palaeogeography, have played important roles in modulating the diversity and evolution of marine life. This Memoir first introduces the content, some of the concepts involved in describing and interpreting palaeobiogeography, and the changing Early Palaeozoic geography is illustrated through a series of time slices. The subsequent 26 chapters, compiled by some 130 authors from over 20 countries, describe and analyse distributional and in many cases diversity data for all the major biotic groups plotted on current palaeogeographic maps. Nearly a quarter of a century after the publication of the ‘Green Book’ (Geological Society, London, Memoir12, edited by McKerrow and Scotese), improved stratigraphic and taxonomic data together with more accurate, digitized palaeogeographic maps, have confirmed the central role of palaeobiogeography in understanding the evolution of Early Palaeozoic ecosystems and their biotas.

Author:
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 16

Get Book Here

Book Description

Author: Geoffrey Playford
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 120

Get Book Here

Book Description
Core samples obtained from five petroleum exploration wells in southern Saskatchewan provide the material basis for this first detailed palynological study of the subsurface Bakken Formation in the northern part of the intracratonic Williston Basin. The Bakken Formation is a holomarine unit that constitutes part of the organic-rich, predominantly black shale sedimentary sequence that accumulated around latest Devonian-earliest Carboniferous time in the Williston Basin and in the contiguous northern Rocky Mountains region of the Western Canada Basin. The Bakken is a distinctive stratigraphic marker because of its lithological consistency in toto and its three subunits, all of which were sampled for this investigation. The Bakken is economically important as a probable petroleum source (shale members) and because of its reservoir properties (arenaceous member).