Late pliocene early pleistocene ecological changes in the Arctic Ocean Borderland PDF Download
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Author: Charles A. Repenning
Publisher:
ISBN:
Category :
Languages : en
Pages : 36
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Book Description
Author: Charles A. Repenning
Publisher:
ISBN:
Category :
Languages : en
Pages : 36
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Book Description
Author: Charles Albert Repenning
Publisher:
ISBN:
Category : Paleoecology
Languages : en
Pages : 48
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Book Description
Author: Charles Albert Repenning
Publisher:
ISBN:
Category : Paleoecology
Languages : en
Pages : 37
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Book Description
Author: Clarence A. Hall
Publisher: Geological Society of America
ISBN: 9780813723570
Category : Science
Languages : en
Pages : 502
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Book Description
Approximately 3000 middle and late Cenozoic nearshore marine molluscan taxa from western California are assigned to six time periods, spanning ~25 m.y. In this interdisciplinary study, western California is palinspastically restored for each of the time periods by backsliding and back-rotating large fault blocks or crustal units. Marine fossil assemblages are assigned to nearshore paleoclimatic regions or water masses within palinspastically restored California. In addition, this volume reveals positive feedback mechanisms between paleolatitudinal changes in sea-surface paleotemperature gradients and changes in the diversity of marine mollusks along the California coast through time; defines "equable" based effective temperatures; and analyzes extinction rates among macroinvertebrate marine taxa from coastal California and the possible causes of these extinctions. The late Paleogene to Neogene faunas reflect an increase in faunal diversity related to strengthened temperature gradients, greater extremes in sea-surface temperatures, reduction in temperateness, and the development of an embayed California coastline.
Author: Laura Allison Chern
Publisher:
ISBN:
Category : Arctic Ocean
Languages : en
Pages : 186
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Book Description
Author: R.W. Barendregt
Publisher: Geological Society of America
ISBN: 0813725518
Category : Science
Languages : en
Pages : 39
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Book Description
"Meighen Island is a keystone site in the Neogene Canadian High Arctic, unique in the Beaufort Formation for its interbedded marine tongue. This volume is a comprehensive report on the biostratigraphy, age, and correlation of Meighen Island to other important Arctic localities from the standpoint of deposits exposed in the area of Bjaere Bay on the west side of the Island. The authors consider the diverse fossil macrofloras and pollen, the terrestrial and marine faunas, magnetostratigraphy, and amino acid racemization and put this site in the context of major changes in climate and geography during the Pliocene"--
Author: Miriam Jones
Publisher: Frontiers Media SA
ISBN: 2889633373
Category :
Languages : en
Pages : 208
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Book Description
The vast area of the North Pacific, spanning ~55˚ longitude, represents a challenge for documenting and understanding the geologic history of ocean, atmosphere, and terrestrial environmental change. Nevertheless, its importance for many issues, including our fundamental understanding of ocean and atmospheric circulation patterns and teleconnections with natural modes of climate variability through time, has led to a steady rise in the numbers of study sites and proxy types. By bringing together a wide range of proxies and timescales that examine the impacts of paleoclimate on ecosystems, water, carbon, and humans, and interactions between marine and terrestrial processes, this Research Topic contributes to an improved understanding of the region’s significance at global, hemispheric, and regional scales.
Author: Alan Graham
Publisher: Oxford University Press
ISBN: 0195344375
Category : Science
Languages : en
Pages : 372
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Book Description
This book is a unique and integrated account of the history of North American vegetation and paleoenvironments over the past 70 million years. It includes discussions of the modern plant communities, causal factors for environmental change, biotic response, and methodologies. The history reveals a North American vegetation that is vast, immensely complex, and dynamic.
Author:
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 294
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Book Description
Author: Charles Albert Repenning
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 296
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Book Description
Microtine history indicates mosaic evolution and complex dispersal patterns around the Northern Hemisphere ; by reflecting this history and evaluating stage of population evolution, microtine biochronology can discriminate time periods as brief as 5,000 years.
