Download or read book Quaternary Sedimentation in the Arctic Ocean written by Kenneth Hunkins and published by . This book was released on 1967 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: Studies indicate that the present ice cover has existed for about the past 70,000 years.
Download or read book Arctic Ocean Sediments Processes Proxies and Paleoenvironment written by R. Stein and published by Elsevier. This book was released on 2008-07-22 with total page 607 pages. Available in PDF, EPUB and Kindle. Book excerpt: Although it is generally accepted that the Arctic Ocean is a very sensitive and important region for changes in the global climate, this region is the last major physiographic province of the earth whose short-and long-term geological history is much less known in comparison to other ocean regions. This lack of knowledge is mainly caused by the major technological/logistic problems in reaching this harsh, ice-covered region with normal research vessels and in retrieving long and undisturbed sediment cores. During the the last about 20 years, however, several international and multidisciplinary ship expeditions, including the first scientific drilling on Lomonosov Ridge in 2004, a break-through in Arctic research, were carried out into the central Artic and its surrounding shelf seas. Results from these expeditions have greatly advanced our knowledge on Arctic Ocean paleoenvironments. Published syntheses about the knowledge on Arctic Ocean geology, on the other hand, are based on data available prior to 1990. A comprehensive compilation of data on Arctic Ocean paleoenvironment and its short-and long-term variability based on the huge amount of new data including the ACEX drilling data, has not been available yet. With this book, presenting (1) detailed information on glacio-marine sedimentary processes and geological proxies used for paleoenvironmental reconstructions, and (2) detailed geological data on modern environments, Quaternary variability on different time scales as well as the long-term climate history during Mesozoic-Tertiary times, this gap in knowledge will be filled.*Aimed at specialists and graduates *Presents background research, recent developments, and future trends*Written by a leading scholar and industry expert
Download or read book Late Quaternary Sedimentation and Paleoceanography in the Eastern Arctic Ocean written by Berit Markussen and published by . This book was released on 1987 with total page 175 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Sedimentation History in the Arctic Ocean and Subarctic Seas for the Last 130 kyr written by M. A. Levitan and published by Springer Science & Business Media. This book was released on 2012-02-10 with total page 402 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book reflects the results of the study of sedimentation history, paleoclimatology, and paleoceanography of the Arctic and Subarctic during the last 130 ka. The main objects under consideration are marine basins of the West Subarctic (Iceland, Norwegian, and Greenland Seas), the Arctic Ocean (Barents, Pechora, Kara, Laptev, East Siberian, Chukchi Seas and deep-sea Arctic Ocean proper), East Subarctic (Bering and Okhotsk Seas). The modern environment and geological history of water- (ice-) sheds and marine basins have been studied for each region, using different sedimentological and geochemical proxies. Mainly results of the authors' own studies are represented, with special emphasis on glacial/interglacial variability and land-ocean interaction. The book is aimed at sedimentologists, quaternary and marine geologists, paleoclimatologists and paleoceanographers, as well as being of great interest to students in the related fields.
Download or read book Sedimentation History in the Arctic Ocean and Subarctic Seas for the Last 130 kyr written by M. A. Levitan and published by Springer. This book was released on 2009-08-10 with total page 387 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book reflects the results of the study of sedimentation history, paleoclimatology, and paleoceanography of the Arctic and Subarctic during the last 130 ka. The main objects under consideration are marine basins of the West Subarctic (Iceland, Norwegian, and Greenland Seas), the Arctic Ocean (Barents, Pechora, Kara, Laptev, East Siberian, Chukchi Seas and deep-sea Arctic Ocean proper), East Subarctic (Bering and Okhotsk Seas). The modern environment and geological history of water- (ice-) sheds and marine basins have been studied for each region, using different sedimentological and geochemical proxies. Mainly results of the authors' own studies are represented, with special emphasis on glacial/interglacial variability and land-ocean interaction. The book is aimed at sedimentologists, quaternary and marine geologists, paleoclimatologists and paleoceanographers, as well as being of great interest to students in the related fields.
Download or read book A Multimethod Approach to Dating Quaternary Sediments from the Arctic Ocean written by Gabriel West and published by . This book was released on 2022 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Glacial Marine Sedimentation written by Bruce F. Molnia and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 843 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume of 18 papers describes the glacial-marine sedimentary environment in a variety of temporal and spatial settings. The volume's primary emphasis is the characteri zation of Quaternary glacial-marine sedimentation to show (1) the significant differences that exist between glacial marine environments in different geographic settings and (2) their resulting glacial-marine deposits and facies. Addi tionally, papers describing ancient glacial-marine environ ments are also presented to illustrate lithified analogs of the Quaternary deposits. With the Doctrine of Uniformitarianism in mind (the present is the key to the past), it is hoped that this volume will serve to expand the horizons of geologists working on the rock record, especially those whose primary criteria for recognition of ancient glacial-marine environments is the presence of dropstones in a finer-grained matrix. As the papers presented here show, diamictite is only one of many types of deposits that form in the glacial-marine sedimentary environment. Papers presented in this volume examine the Quaternary glacia1-marine sedimentary picture in subarctic Alaska, Antarctica, the Arctic Ocean, the Kane Basin, Baffin Island, the Puget-Fraser Lowland of Washington and British Columbia, and the North Atlantic Ocean. Ancient glacia1-marine depos its described are the Neogene Yakataga Formation of southern Alaska, the Late Paleozoic Dwyka Formation of the Karoo Basin of South Africa, and the Precambrian Mineral Fork Formation of Utah. For continuity, a paper summar1z1ng the temporal and spatial occurrences of glacial-marine deposits is also presented.
Download or read book Geological History of the Polar Oceans Arctic versus Antarctic written by U. Bleil and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 811 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of the NATO Advanced Research Workshop, Bremen, Germany, October 10-14, 1988
Download or read book The First Late Quaternary Sediment Record from the Western Arctic Ocean with a True Millennial Resolution written by Ruth Adler and published by . This book was released on 2008 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: Sediment core HLY0503-08JPC, collected on the HOTRAX'05 expedition, has been sampled in the upper 5 m and reveals a cyclicity that encompasses marine isotope stages (MIS) 1-6, with more detail than seen in other cores from the central Arctic Ocean. Age control is provided by Accelerator Mass Spectrometry 14C and amino acid racemization ages and comparison of other cores with established chronostratigraphy. Cyclic changes in foraminiferal abundance, [delta]18O and [delta]13C values of planktonic foraminifer Neogloboquadrina pachyderma (sinistral) and lithologic variations reflect changes in circulation and depositional environments. Overall, the HLY0503-08JPC record provides the most detailed analysis of Late Quaternary environments in the western Arctic Ocean available to date and strengthens the age model for Arctic Ocean Quaternary stratigraphy.
Download or read book Sedimentation Processes in the White Sea written by Alexander P. Lisitsyn and published by Springer. This book was released on 2019-01-22 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents a new perspective on the sedimentation processes in the White Sea, based on a multidisciplinary research study conducted between 2001 and 2016. It provides a comprehensive review and discusses the latest research findings on the ecosystem of this sub-arctic zone. The topics addressed include suspended particulate matter as a main source and proxy of the sedimentation processes in the White Sea; vertical fluxes of dispersed sedimentary matter and absolute masses in the White Sea; and the development history and quaternary deposits of the modern White Sea basin. The authors closely examine the abundance and species composition of microalgae associations and the environmental conditions in the bottom sediments of the White Sea, namely, heavy metal accumulation and aliphatic and polycyclic aromatic hydrocarbons. The book ends contain a summary of the key conclusions and recommendations. Together with the companion volume Biogeochemistry of the Atmosphere, Ice and Water of the White Sea: The White Sea Environment Part I, it offers an essential source of information for postgraduate students, researchers, and stakeholders alike.
Download or read book Quaternary Stratigraphy and Paleoceanography of the Canada Basin Western Arctic Ocean written by Richard Z. Poore and published by . This book was released on 1994 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: Climate and paleoceanography of the western Arctic Ocean for the last 1 million years interpreted from our four marine sediment cores.
Download or read book Quaternary Sea Level Changes written by Colin V. Murray-Wallace and published by Cambridge University Press. This book was released on 2014-01-30 with total page 503 pages. Available in PDF, EPUB and Kindle. Book excerpt: An important overview of Quaternary climates including detailed Pleistocene and Holocene sea-level changes, for researchers and graduate and advanced undergraduate students.
Download or read book Late quaternary Arctic Ocean sediment records written by Niels Nørgaard-Pedersen and published by . This book was released on 1997 with total page 115 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Glacial Marine Sedimentation written by John B. Anderson and published by Geological Society of America. This book was released on 1991-01-01 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt: The papers in this collection are based on a symposium held at the 1988 annual meeting of the Geological Society of America, with the objective of identifying sedimentary criteria and facies models that can be used to characterize the glacial-climate setting of ancient sedimentary sequences. Includes papers on Antarctica, Alaska, and Ellesmere Island, and a brief literature review.
Download or read book Glacial Marine Sedimentation written by Bruce F Molnia and published by . This book was released on 1983-11-01 with total page 856 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Quaternary Stratigraphy of the Northwind Ridge Arctic Ocean written by Kevin Allen Crawford and published by . This book was released on 2010 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: The Arctic Ocean plays an important role in modulating the world's climate. Changes in sea-ice albedo and the export of freshwater into the North Atlantic could have serious repercussions to the climate patterns far beyond the Arctic. To understand fully the impacts of the retreating sea-ice cover and the warming Arctic Ocean we need to look into the past for clues. Paleoenvironments of the Arctic Ocean can be reconstructed by using sea-floor sediment constituents, such as paleobiological and mineral components as well as chemical and paleomagnetic parameters. Three cores raised from the Northwind Ridge, north of the Alaskan continental margin, were chosen to investigate sedimentary patterns and related paleoenvironments in the western Arctic Ocean across a time frame from the Holocene to estimated early Pleistocene. These cores show a range of sedimentation rates decreasing from south to north, thus allowing a development of a relatively high-resolution Upper Quaternary stratigraphy at the southern part of the ridge and a lower-resolution, yet longer stratigraphy for its northern part. In addition to this long stratigraphic coverage, the northern core has well-preserved calcareous microfauna, which provides new insights into paleoceanographic environments. All stratigraphic intervals recovered display glacial-interglacial cyclicity expressed in abundances of foraminifera and ice-rafted debris, and variability in stable-isotopic compositions and some chemical elements such as manganese consistent with data from other parts of the Arctic Ocean. In addition to this cyclicity, sedimentary and micropaleontological data from cores under study indicate a step increase in glacial inputs and sea-ice coverage at the end of the Early Pleistocene, co-occurring with a fundamental reorganization of the Earth's climate during the Mid-Pleistocene Transition. The causal relationships between these processes are yet to be investigated.
Download or read book Sea Ice and Iceberg Sedimentation in the Ocean written by Alexander P. Lisitzin and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 562 pages. Available in PDF, EPUB and Kindle. Book excerpt: This reference book for researchers working on glacial sediments provides a complete overview of the various glacial deposits in the ocean. It presents a collection of worldwide data on glacio-marine phenomena.
