Download or read book Neogene and Quaternary Quantitative Palynostratigraphy and Paleoclimatology from Sections in Yukon and Adjacent Northwest Territories and Alaska written by J. M. White and published by . This book was released on 1999 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study provides a framework biostratigraphy for pollen and spores in the Neogene and Quaternary of Yukon and adjacent Northwest Territories & Alaska. This biozonation is useful for correlating continental rocks with rocks on the northern continental margin, including the petroliferous Beaufort-Mackenzie Basin. This framework biozonation achieves an absolute chronology based on the study of many continental sections where ages are determined by independent and absolute measures. The study assembles the biozonation from seven sections and one borehole, and the palynological spectra from 163 samples from these sections were grouped & averaged to produce 21 composite spectra that depict the long-term pattern of vegetation change ranging from Early Miocene to late Quaternary. Pollen and spores are grouped and summed by environmental tolerances and physiognomy of the modern families & genera of plants to which they are related. Using these groups, pollen and spore ratios are drawn to track environmental parameters (temperature, forest canopy cover, and paludification) of the study sites. Biostratigraphic and paleoecological patterns are explained in terms of known changes in the global climate and the climatic effects of regional tectonics. Six assemblage zones and five subzones are proposed to describe the palynological succession.
Download or read book Neogene and Quaternary Selected Palynological Data from Yukon and Adjacent Northwest Territories and Alaska written by and published by . This book was released on 1997 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Encyclopedia of Quaternary Science written by Cary Mock and published by Newnes. This book was released on 2013-03-25 with total page 3883 pages. Available in PDF, EPUB and Kindle. Book excerpt: The second revised edition of the Encyclopedia of Quaternary Science, Four Volume Set, provides both students and professionals with an up-to-date reference work on this important and highly varied area of research. There are lots of new articles, and many of the articles that appeared in the first edition have been updated to reflect advances in knowledge since 2006, when the original articles were written. The second edition will contain about 375 articles, written by leading experts around the world. This major reference work is richly illustrated with more than 3,000 illustrations, most of them in colour. Research in the Quaternary sciences has advanced greatly in the last 10 years, especially since topics like global climate change, geologic hazards and soil erosion were put high on the political agenda. This second edition builds upon its award-winning predecessor to provide the reader assured quality along with essential updated coverage Contains 357 broad-ranging articles (4310 pages) written at a level that allows undergraduate students to understand the material, while providing active researchers with a ready reference resource for information in the field. Facilitates teaching and learning The first edition was regarded by many as the most significant single overview of Quaternary science ever, yet Editor-in-Chief, Scott Elias, has managed to surpass that in this second edition by securing even more expert reviews whilst retaining his renowned editorial consistency that enables readers to navigates seamlessly from one unfamiliar topic to the next
Download or read book Oaks Physiological Ecology Exploring the Functional Diversity of Genus Quercus L written by Eustaquio Gil-Pelegrín and published by Springer. This book was released on 2017-12-12 with total page 547 pages. Available in PDF, EPUB and Kindle. Book excerpt: With more than 500 species distributed all around the Northern Hemisphere, the genus Quercus L. is a dominant element of a wide variety of habitats including temperate, tropical, subtropical and mediterranean forests and woodlands. As the fossil record reflects, oaks were usual from the Oligocene onwards, showing the high ability of the genus to colonize new and different habitats. Such diversity and ecological amplitude makes genus Quercus an excellent framework for comparative ecophysiological studies, allowing the analysis of many mechanisms that are found in different oaks at different level (leaf or stem). The combination of several morphological and physiological attributes defines the existence of different functional types within the genus, which are characteristic of specific phytoclimates. From a landscape perspective, oak forests and woodlands are threatened by many factors that can compromise their future: a limited regeneration, massive decline processes, mostly triggered by adverse climatic events or the competence with other broad-leaved trees and conifer species. The knowledge of all these facts can allow for a better management of the oak forests in the future.
Download or read book Encyclopedia of Quaternary Science written by and published by Elsevier. This book was released on 2006-11-24 with total page 7184 pages. Available in PDF, EPUB and Kindle. Book excerpt: The quaternary sciences constitute a dynamic, multidisciplinary field of research that has been growing in scientific and societal importance in recent years. This branch of the Earth sciences links ancient prehistory to modern environments. Quaternary terrestrial sediments contain the fossil remains of existing species of flora and fauna, and their immediate predecessors. Quaternary science plays an integral part in such important issues for modern society as groundwater resources and contamination, sea level change, geologic hazards (earthquakes, volcanic eruptions, tsunamis), and soil erosion. With over 360 articles and 2,600 pages, many in full-color, the Encyclopedia of Quaternary Science provides broad ranging, up-to-date articles on all of the major topics in the field. Written by a team of leading experts and under the guidance of an international editorial board, the articles are at a level that allows undergraduate students to understand the material, while providing active researchers with the latest information in the field. Also available online via ScienceDirect (2006) – featuring extensive browsing, searching, and internal cross-referencing between articles in the work, plus dynamic linking to journal articles and abstract databases, making navigation flexible and easy. For more information, pricing options and availability visit www.info.sciencedirect.com. 360 individual articles written by prominent international authorities, encompassing all important aspects of quaternary science Each entry provides comprehensive, in-depth treatment of an overview topic and presented in a functional, clear and uniform layout Reference section provides guidence for further research on the topic Article text supported by full-color photos, drawings, tables, and other visual material Writing level is suited to both the expert and non-expert
Download or read book Advances in Quaternary Entomology written by Scott A. Elias and published by Elsevier. This book was released on 2009-08-18 with total page 303 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advances in Quaternary Entomology addresses the science of fossil insects by demonstrating their immense contribution to our knowledge of the paleoenvironmental and climatological record of the past 2.6 million years. In this comprehensive survey of the field, Scott A. Elias recounts development of scholarship, reviews the fossil insect record from Quaternary deposits throughout the world, and points to rewarding areas for future research. The study of Quaternary entomology is becoming an important tool in understanding past environmental changes. Most insects are quite specific as to habitat requirements, and those in non-island environments have undergone almost no evolutionary change in the Quaternary period. We therefore can use their modern ecological requirements as a basis for interpreting what past environments must have been like. Describes and identifies principal characteristics of fossil insect groups of the Quaternary period Ties Quaternary insect studies to the larger field of paleoecology Offers global coverage of the subject with specific regional examples Illustrates specific methods and procedures for conducting research in Quaternary Entomology Offers unique insight into overlying trends and broader implications of Quaternary climate change based on insect life of the period
Download or read book Bulletin Geological Survey of Canada written by Geological Survey of Canada and published by . This book was released on 1999 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Canadian Journal of Earth Sciences written by and published by . This book was released on 2002 with total page 646 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Field Guide to Quaternary Research in Central and Western Yukon Territory written by Duane Gerald Froese and published by [Whitehorse] : Yukon, Heritage Branch. This book was released on 2001 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Notes on Quaternary Palaeoecological Problems in the Yukon Territory and Adjacent Regions written by J. Terasmae and published by . This book was released on 1967 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Late Neogene written by and published by Elsevier. This book was released on 2011-09-21 with total page 225 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Late Neogene
Download or read book Lower Paleozoic Stratigraphy of Northern Yukon Territory and Northwestern District of Mackenzie written by D. W. Morrow and published by . This book was released on 1999 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt: Previous studies of the lower Palaeozoic in the Eagle Plain & Richardson Mountain area of north-west mainland Canada in the Yukon & Northwest Territories have dealt either with outcrop or surface sections, or with subsurface well sections, but did not integrate these data. This has led to the development of inconsistent stratigraphic nomenclatures and an inability to form a consistent sequence stratigraphic model for the lower Palaeozoic in this area. This bulletin presents a stratigraphic synthesis based on data from surface exposures in the mountains surrounding Eagle Plain and on subsurface borehole data from beneath Eagle Plain and from the interior plain bordering the east flank of the Richardson Mountains. An internally consistent stratigraphic framework is developed, including reaffirmation of some previous nomenclature, restriction to certain areas of others, and definition of new stratigraphic units. The positions of carbonate-to-shale transitions which commonly exert a strong control on structural evolution and on the occurrence of sedimentary mineral deposits & hydrocarbons are more accurately delineated. A detailed sedimentological analysis of the Ogilvie Formation, the most prospective lower Palaeozoic unit for the occurrence of hydrocarbon reservoirs, is also included, along with a map of thermal maturity at the top of the unit.
Download or read book Permian and Triassic Stratigraphy of Mackenzie Delta and the British Barn and Richardson Mountains Yukon and Northwest Territories written by James Dixon and published by . This book was released on 1998 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt: The area covered in this study extends from the northwesternmost part of Yukon eastward into the Richardson Mountains and under the Mackenzie Delta. The investigation aims to expand on previous stratigraphic studies and proposes formal nomenclature for unnamed parts of the Permian succession in the area. Information is provided on the Permian and Triassic stratigraphy and lithology of the area. Correlations between the various occurrences in the study area are attempted as well as more regional correlations with Permian and Triassic strata in the Yukon, mainland Northwest Territories, and adjacent Alaska. Paleogeographic reconstructions and the economic potential of Permian and Triassic strata in the study area are also discussed.
Download or read book Quaternary Paleoclimate written by W. C. Mahaney and published by Norwich [Norfolk] : Geo Abstracts. This book was released on 1981 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt: 22 papers given at the fourth conference on Quaternary Research, May 18-20, 1979 which discuss methods of reconstructing paleoclimate.
Download or read book Quaternary Stratigraphy of North America written by W. C. Mahaney and published by . This book was released on 1976 with total page 536 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book From the Yenisei to the Yukon written by Ted Goebel and published by Texas A&M University Press. This book was released on 2011-08-25 with total page 410 pages. Available in PDF, EPUB and Kindle. Book excerpt: Who were the first people who came to the land bridge joining northeastern Asia to Alaska and the northwest of North America? Where did they come from? How did they organize technology, especially in the context of settlement behavior? During the Pleistocene era, the people now known as Beringians dispersed across the varied landscapes of late-glacial northeast Asia and northwest North America. The twenty chapters gathered in this volume explore, in addition to the questions posed above, how Beringians adapted in response to climate and environmental changes. They share a focus on the significance of the modern-human inhabitants of the region. By examining and analyzing lithic artifacts, geoarchaeological evidence, zooarchaeological data, and archaeological features, these studies offer important interpretations of the variability to be found in the early material culture the first Beringians. The scholars contributing to this work consider the region from Lake Baikal in the west to southern British Columbia in the east. Through a technological-organization approach, this volume permits investigation of the evolutionary process of adaptation as well as the historical processes of migration and cultural transmission. The result is a closer understanding of how humans adapted to the diverse and unique conditions of the late Pleistocene.
Download or read book Neogene Climate Change in Eastern North America written by Kyrie A. Baumgartner and published by . This book was released on 2014 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt: Though much is known of the global paleoclimate during the Neogene, little is understood about eastern North America at that time. During the Neogene the global paleoclimate was transitioning from the warm temperatures and higher levels of precipitation of the Paleogene to the cooler temperatures and lower levels of precipitation during the Pleistocene. Eleven fossil sites from Neogene eastern North America were analyzed using the Coexistence Approach: Pollack Farm, Brandon Lignite, Legler Lignite, Alum Bluff, Bryn Mawr, Big Creek on Sicily Island, Brandywine, Gray Fossil Site, Citronelle, Peace Creek, and Ohoopee River Dune Field. Analyses showed a general trend that early and middle Miocene sites were warmer than the area today, while middle and late Miocene sites were comparable to the area today, and Pliocene sites were comparable to or cooler than the area today. However, there is no clear trend of increased precipitation during the Neogene.
