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Author: D. K. Larue
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Author: D. K. Larue
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Author: D. K. Larue
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 254
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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:
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 446
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 402
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Author: N. Adam Smith
Publisher: PenSoft Publishers LTD
ISBN: 9546425850
Category : Science
Languages : en
Pages : 124
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Book Description
The flightless Mancallinae (Aves, Pan-Alcidae) from the Pacific Ocean are represented by one of the richest fossil records among Charadriiformes. A detailed review of previously published and previously undescribed fossils referred to Mancallinae resulted in taxonomic revision of the clade and the identification of three new species from the Miocene and Pliocene of California, USA. This monograph includes descriptions of new Mancallinae species and provides the first species-level phylogenetic hypothesis of Mancallinae relationships. Phylogenetic hypotheses were generated through the combined analysis of molecular sequence data and newly identified morphological character data for extant and extinct charadriiforms. The results of the combined phylogenetic analysis places hypotheses regarding the ethology and morphological convergence of Mancallinae to other flightless wing-propelled divers in phylogenetic context and facilitates comparisons between alcid paleodiversity and paleoclimatic events that have been hypothesized as drivers of alcid evolution.
Author: Thane Hubert McCulloh
Publisher:
ISBN:
Category : Nature
Languages : en
Pages : 36
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Author: Tor Helge Nilsen
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 100
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Book Description
A stratigraphic division of the Hornbrook Formation into five nonmarine and marine members.
Author: David I. M. Macdonald
Publisher: John Wiley & Sons
ISBN: 1444303902
Category : Science
Languages : en
Pages : 368
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Book Description
Over the last ten years, seismic and sequence stratigraphic studies have emphasized the role of worldwide fluctuations in sea level in controlling patterns of sedimentation. Widely recognized cycles of coastal onlap are thought to have been caused by such global changes. This postgraduate and reference text contains contributions from an international team of specialists. The book is based upon an IAS meeting which focused attention on the situation at active plate margins, covering three major themes: the underlying mechanics and rates of relative sea-level change at active plate margins; the interaction of eustatic and tectonic processes at modern margins; recognition of the products in the sedimentary record and possible criteria for distinguishing global eustatic from local tectonic effects. This book is intended for those studying and working in sedimentology, basin analysis, exploration geophysics and petroleum geology.
Author: Akihito Iijima
Publisher: VSP
ISBN: 9789067641753
Category : Science
Languages : en
Pages : 260
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Book Description
This Proceedings volume contains 14 papers from the symposium ''Siliceous, Phosphatic and Glauconitic Sediments of the Tertiary and Mesozoic'', which was held during the 29th International Geological Congress, Kyoto, Japan, 24 August--3 September, 1992. The first part of this volume consists of papers dealing with Tertiary biosiliceous sediments of the Pacific Rim, starting in the northwest. The second part of the volume is composed of papers dealing with Tertiary and Mesozoic phosphatic rocks and phosphatebearing sequences, in particular of the eastern Pacific Rim and the Middle East. The articles serve to emphasize the similarities and differences between the Pacific Neogene successions and the Tethyan Mesozoic sequences of the Middle East.
