Ludlow and Pridoli (Upper Silurian) Graptolites from the Arctic Islands, Canada PDF Download
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Author: Alfred C. Lenz
Publisher: NRC Research Press
ISBN: 9780660193267
Category : Nature
Languages : en
Pages : 162
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Book Description
Graptolites flourished from earliest Ordovician to Early Devonian, a time range of about 90 million years, and were widely distributed as marine benthic and planktonic colonial organisms around then-world.
Author: Alfred C. Lenz
Publisher: NRC Research Press
ISBN: 9780660193267
Category : Nature
Languages : en
Pages : 162
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Book Description
Graptolites flourished from earliest Ordovician to Early Devonian, a time range of about 90 million years, and were widely distributed as marine benthic and planktonic colonial organisms around then-world.
Author: Jörg Maletz
Publisher: John Wiley & Sons
ISBN: 1118515706
Category : Science
Languages : en
Pages : 355
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Book Description
The graptolites constitute one of the geologically most useful taxonomic groups of fossils for dating rock successions, understanding paleobiogeography and reconstructing plate tectonic configurations in the Lower Palaeozoic. Graptolites were largely planktic, marine organisms, and as one of the first groups that explored the expanses of the world’s oceans are vital for understanding Palaeozoic ecology. They are the best and often the only fossil group for dating Lower Palaeozoic rock successions precisely. Thousands of taxa have been described from all over the planet and are used for a wide variety of geological and palaeontological (biological) research topics. The recent recognition of the modern pterobranch Rhabdopleura as a living benthic graptolite enables a much better understanding and interpretation of the fossil Graptolithina. In the decades since the latest edition of the Graptolite Treatise, the enormous increase of knowledge on this group of organisms has never been synthesised in a compelling and coherent way, and information is scattered in scientific publications and difficult to sort through. This volume provides an up-to-date insight into research on graptolites. Such research has advanced considerably with the use of new methods of investigation and documentation. SEM investigation and research on ultrastructure of the tubaria has made it possible to compare extant and extinct taxa in much more detail. Cladistic interpretation of graptolite taxonomy and evolution has advanced the understanding of this group of organisms considerably in the last two decades, and has highlighted their importance in our understanding of evolutionary processes. This book will show graptolites, including their modern, living relatives, in a quite new and fascinating light, and will demonstrate the impact that the group has had on the evolution of the modern marine ecosystem. This book is aimed not only at earth scientists but also at biologists, ecologists and oceanographers. It is a readable and comprehensible volume for students at the MSc level, while remaining accessible to undergraduates and non-specialists seeking up-to-date information about this fascinating topic in palaeobiology.
Author: John A. Talent
Publisher: Springer Science & Business Media
ISBN: 9048134285
Category : Science
Languages : en
Pages : 1104
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Book Description
This volume focuses on the broad pattern of increasing biodiversity through time, and recurrent events of minor and major ecosphere reorganization. Intense scrutiny is devoted to the pattern of physical (including isotopic), sedimentary and biotic circumstances through the time intervals during which life crises occurred. These events affected terrestrial, lacustrine and estuarine ecosystems, locally and globally, but have affected continental shelf ecosystems and even deep ocean ecosystems. The pattern of these events is the backdrop against which modelling the pattern of future environmental change needs to be evaluated.
Author: B. S. Norford
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 86
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Book Description
Author: Xu Chen
Publisher: Springer Nature
ISBN: 9819931347
Category : Science
Languages : en
Pages : 240
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Book Description
This book presents the accumulated data and current state of geological knowledge on China’s main shale gas fields. It addresses a broad range of topics, including the geological setting, reference sections and published boreholes, lithostratigraphy, biostratigraphy and chronostratigraphy, sedimentology and sequence stratigraphy of the late Ordovician to early Silurian, spatial and temporal distribution patterns and environmental changes in the black shales of the Wufeng and Lungmachi formations, numerical analysis of the Wufengian and Lungmachian Total Organic Carbon (TOC), late Ordovician to early Silurian bentonites of the Yangtze region, and a graptolite atlas of the Wufeng and Lungmachi formations. Given its scope, the book represents a valuable asset for researchers and petroleum engineers alike.
Author:
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 660
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Book Description
Author: Ulrich Mayr
Publisher:
ISBN: 9780660174686
Category : Devon Island (Nunavut)
Languages : en
Pages : 742
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Book Description
Author: Adam Urbanek
Publisher:
ISBN:
Category : Animals, Fossil
Languages : en
Pages : 286
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Book Description
Author: R. Thorsteinsson
Publisher: Geological Survey of Canada
ISBN:
Category : Nature
Languages : en
Pages : 92
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Book Description
"Boothia Uplift is a major structural feature that extends north from Boothia Peninsula to the northwestern extremity of Devon Island. On Somerset Island and Boothia Peninsula it consists of Precambrian crystalline rocks and Proterozoic sediments that are flanked by Cambrian to Lower Devonian platform-type sedimentary rocks. This report deals with strata of Late Silurian to Early Devonian age, the time of the principal crustal movements that produced the Uplift." --
Author:
Publisher:
ISBN:
Category : Earth sciences
Languages : en
Pages : 434
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Book Description
