The Oligocene Bridge Creek Flora Of The John Day Formation Oregon

Author : Herbert William Meyer,Steven R. Manchester
Publisher : Unknown
Page : 376 pages
File Size : 40,8 Mb
Release : 1997
Category : Science
ISBN : STANFORD:36105021426700

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The Oligocene Bridge Creek Flora of the John Day Formation, Oregon by Herbert William Meyer,Steven R. Manchester Pdf

This comprehensive systematic revision of the Bridge Creek flora is based on large collections of megafossil specimens from the John Day and Crooked River basins. The flora was found to be more diverse than previously recognized, with at least 125 species. At least 11 genera are extinct, but the majority are extant members of deciduous forests. The flora was derived from a variety of sources and represents a classic example of the broadleaved deciduous forests that became widespread at mid-latitudes following the Eocene-Oligocene climatic cooling.

Author : Ben A. LePage,Christopher J. Williams,Hong Yang
Publisher : Springer Science & Business Media
Page : 450 pages
File Size : 48,8 Mb
Release : 2005-07-22
Category : Science
ISBN : 9781402027642

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The Geobiology and Ecology of Metasequoia by Ben A. LePage,Christopher J. Williams,Hong Yang Pdf

The plant fossil record indicates that the genus Metasequoia was widely distributed throughout the Northern Hemisphere from the early Late Cretaceous to the Plio-Pleistocene. Today the genus has shrunk to one species with approximately 5,000 mature individuals in southeastern China’s Xiahoe Valley. This book distills the current understanding of the biology, ecology and physiology of fossil and living Metasequoia, current research directions and problems that remain unresolved.

Author : Anonim
Publisher : Unknown
Page : 28 pages
File Size : 41,6 Mb
Release : 1932
Category : Electronic
ISBN : IOWA:31858042832091

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Central Oregon by Anonim Pdf

Author : Daniel I. Axelrod
Publisher : Univ of California Press
Page : 164 pages
File Size : 53,8 Mb
Release : 1998-07-31
Category : History
ISBN : 0520098242

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The Oligocene Haynes Creek Flora of Eastern Idaho by Daniel I. Axelrod Pdf

This flora of 70 species is dominated by deciduous trees, many with descendants in China. Precipitation was 890 mm, mean annual temperature 12.5°C, the annual range 10°C, and freezing rare. Elevation was about 1000 meters. Comparison with the Horse Prairie flora, 30 miles east and across the present continental divide, indicates that the divide was then low and discontinuous, with warmer climate to the east.

Author : Anonim
Publisher : Unknown
Page : 622 pages
File Size : 43,6 Mb
Release : 1932
Category : Irrigation
ISBN : STANFORD:36105007643823

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Water-supply Paper by Anonim Pdf

Author : Geological Survey (U.S.)
Publisher : Unknown
Page : 1418 pages
File Size : 48,8 Mb
Release : 1934
Category : Irrigation
ISBN : UOM:39015001484735

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Water-supply Paper by Geological Survey (U.S.) Pdf

Author : Greg John Retallack,Erick A. Bestland,Theodore J. Fremd
Publisher : Geological Society of America
Page : 202 pages
File Size : 49,9 Mb
Release : 1999-01-01
Category : Science
ISBN : 0813723442

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Eocene and Oligocene Paleosols of Central Oregon by Greg John Retallack,Erick A. Bestland,Theodore J. Fremd Pdf

Author : Alan Graham
Publisher : Oxford University Press
Page : 372 pages
File Size : 48,7 Mb
Release : 1999-03-25
Category : Science
ISBN : 9780195344370

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Late Cretaceous and Cenozoic History of North American Vegetation by Alan Graham Pdf

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 : Anonim
Publisher : Unknown
Page : 28 pages
File Size : 50,6 Mb
Release : 1932
Category : Geology
ISBN : UOM:39015035520447

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Guidebook by Anonim Pdf

Author : Cleophas Cisney O'Harra,Eugene Sheridan Perry,George Perry Grimsley,J. Harlen Bretz,John Bernard Reeside,Philip B. King,Ralph Works Chaney,Richard Montgomery Field,William Clinton Alden,William Otis Hotchkiss
Publisher : Unknown
Page : 640 pages
File Size : 51,9 Mb
Release : 1932
Category : Black Hills (S.D. and Wyo.)
ISBN : OSU:32435065740003

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The Baltimore & Ohio Railroad by Cleophas Cisney O'Harra,Eugene Sheridan Perry,George Perry Grimsley,J. Harlen Bretz,John Bernard Reeside,Philip B. King,Ralph Works Chaney,Richard Montgomery Field,William Clinton Alden,William Otis Hotchkiss Pdf

Author : Charles William Henderson
Publisher : Unknown
Page : 254 pages
File Size : 49,7 Mb
Release : 1933
Category : Geology
ISBN : STANFORD:36105012445958

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Colorado by Charles William Henderson Pdf

Author : Jim E. O'Connor,Rebecca J. Dorsey,Ian Madin
Publisher : Geological Society of America
Page : 886 pages
File Size : 55,7 Mb
Release : 2009
Category : Science
ISBN : 9780813700151

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Volcanoes to Vineyards by Jim E. O'Connor,Rebecca J. Dorsey,Ian Madin Pdf

"This volume contains guides for 34 geological field trips offered in conjunction with the October 2009 GSA Annual Meeting in Portland, Oregon. Showcasing the region's geological diversity, the peer-reviewed papers included here span topics ranging from accreted terrains and mantle plumes to volcanoes, floods, and vineyard terroir. Locations visited throughout Oregon, Washington, and Idaho encompass Astoria to Zillah. More than just a series of maps, the accompanying descriptions, observations, and conclusions offer new insights to the geologic processes and history of the Pacific Northwest - insights that will inspire readers to put their boots on the evidence as they develop their own understanding of this remarkable and dynamic corner of the world."--Publisher's description.

Author : Daniel I. Axelrod
Publisher : Univ of California Press
Page : 108 pages
File Size : 45,6 Mb
Release : 1998-03-17
Category : Nature
ISBN : 0520098234

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The Eocene Thunder Mountain Flora of Central Idaho by Daniel I. Axelrod Pdf

An Eocene (45 Ma) flora from Thunder Mountain caldera shows that montane conifer forest species from upper slopes descended to interfinger with mixed conifer-deciduous hardwood forest on the caldera floor then near 1700 m. Most species are allied to those in the western United States, but a few genera are in China. Precipitation was near 100 cm yearly, with most in summer.

Author : Zehao Shen,George P. Malanson,Jinlong Zhang,Meng Yao
Publisher : Frontiers Media SA
Page : 144 pages
File Size : 52,7 Mb
Release : 2021-07-27
Category : Science
ISBN : 9782889710805

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Temporal Patterns and Mechanisms of Biodiversity Across Scales in East Asia by Zehao Shen,George P. Malanson,Jinlong Zhang,Meng Yao Pdf

Author : Daniel I. Axelrod
Publisher : Univ of California Press
Page : 68 pages
File Size : 40,6 Mb
Release : 2000-06-12
Category : Science
ISBN : 0520915992

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A Miocene (10-12 Ma) Evergreen Laurel-Oak Forest from Carmel Valley, California by Daniel I. Axelrod Pdf

This is a study of the Miocene Carmel flora of California, an evergreen laurel–oak forest that grew in a mild temperate (mean annual temperature of 15 degrees C), frost-free climate, with annual precipitation of about 760 mm (30 in.). Collectively, the Carmel and other Miocene floras like the San Pablo and Temblor (broad-leafed deciduous trees, with few evergreen species), the Puente (evergreen oak forest with chaparral species), the Mint Canyon, Ricardo, and Tehachapi (numerous arid subtropical scrub associated with oak woodland and chaparral species) suggest they foreshadowed a similar distribution of the different California vegetation zones today.