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Glacial Deposits Sedimentary Environments And Ice Sheet Dynamics In The Northern Baltic Sea And Lake Peipsi During The Late Weichselian
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Book Synopsis Glacial Deposits, Sedimentary Environments and Ice Sheet Dynamics in the Northern Baltic Sea and Lake Peipsi During the Late Weichselian by : Riko Noormets
Download or read book Glacial Deposits, Sedimentary Environments and Ice Sheet Dynamics in the Northern Baltic Sea and Lake Peipsi During the Late Weichselian written by Riko Noormets and published by . This book was released on 2001 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Ice-sheet Dynamics and Climate Fluctuations During the Weichselian Glaciation Along the Southwestern Baltic Sea Coast by : Michael Kenzler
Download or read book Ice-sheet Dynamics and Climate Fluctuations During the Weichselian Glaciation Along the Southwestern Baltic Sea Coast written by Michael Kenzler and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Glacier-influenced Sedimentation on High-latitude Continental Margins by : J. A. Dowdeswell
Download or read book Glacier-influenced Sedimentation on High-latitude Continental Margins written by J. A. Dowdeswell and published by Geological Society of London. This book was released on 2002 with total page 398 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book examines the process and patterns of glacier-influenced sedimentation on high-latitude continental margins and the geophysical and geological signatures of the resulting sediments and landforms. It contains a range of papers concerning modern and glacially-influenced sedimentation in high-latitude areas from both hemispheres, many of which discuss the relationship between glacier dynamics and the sediments and landforms preserved in the glacimarine environment.
Book Synopsis Through a Glacial Cycle by : Pirjo-Leena Forsström
Download or read book Through a Glacial Cycle written by Pirjo-Leena Forsström and published by . This book was released on 2005 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Past Glacial Environments by : John Menzies
Download or read book Past Glacial Environments written by John Menzies and published by Butterworth-Heinemann. This book was released on 1996 with total page 636 pages. Available in PDF, EPUB and Kindle. Book excerpt: This undergraduate textbook provides a current and comprehensive survey of the sediments and forms generated within Pleistocene and pre-Pleistocene glacial environments. Techniques and methods used in the examination of these sediments and forms are extensively reviewed. This is the most comprehensive and wide-ranging book ever prepared on this topic, and will form the basis for future work in the area. In studying past glacial environments, links are made between understanding modern glaciodynamics, ice physics, and the processes of erosion, transport and deposition of glacial sediments and the generation of various glacial landforms. Past Glacial Environments presents physical geography, earth and environmental science students with an extensive review of the latest research on past glacial environments. The text encompasses Pleistocene subglacial, supraglacial and proglacial sediments and environments, pre-Pleistocene global glacial conditions and sediments, as well as past glacioaeolian, glaciolacustrine, and glaciomarine sediments. Subsequent chapters focus on stratigraphy, lithofacies associations, paleosols, glacio-eustasy and isostasy, micromorphology, SEM, drift prospecting and placer mining.
Book Synopsis A Practical Guide to the Study of Glacial Sediments by : David J. A. Evans
Download or read book A Practical Guide to the Study of Glacial Sediments written by David J. A. Evans and published by Routledge. This book was released on 2014-04-23 with total page 297 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sediments are the most valuable form of physical evidence for past Earth surface processes. They have the potential to build up an archive of events and provide a window into the past. Through careful examination of sediments the shifting patterns of surface processes across space and time are revealed, allowing us to reconstruct past environments and environmental change. A Practical Guide to the Study of Glacial Sediments is a guide to the standard techniques employed to read the sedimentary record of former glaciers and ice sheets. It demonstrates that the often complex and fragmentary glacial sedimentary record can, when examined systematically and rationally, provide detailed insights into former environments and climates in places where no other evidence is available. The complementary techniques covered in this book include: facies description, grain size analysis, clast form assessment, clast macrofabric analysis, micromorphology, particle lithology and assessment of engineering properties. They yield consistent and meaningful results in a range of glacial depositional environments throughout the world, from the high Arctic to the Himalayas. A Practical Guide to the Study of Glacial Sediments provides students and researchers with a clear and accessible guide to recording and interpreting glacial successions wherever the location.
Book Synopsis Glacial Sedimentary Environments by : Gail Mowry Ashley
Download or read book Glacial Sedimentary Environments written by Gail Mowry Ashley and published by . This book was released on 1985 with total page 262 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This short course attempts to review recent studies of glacigenic deposits and to examine the relationships between physical processes and sediment characteristics in the glacial environment. The course discusses terrestrial glacial environments of deposition exclusively."--Provided by publisher.
Book Synopsis The Northern Pleistocene of Russia by : Valery I. Astakhov
Download or read book The Northern Pleistocene of Russia written by Valery I. Astakhov and published by Cambridge Scholars Publishing. This book was released on 2020-05-28 with total page 610 pages. Available in PDF, EPUB and Kindle. Book excerpt: This collection of papers devoted to the Ice Age of northern Russia provides illustrated descriptions of landforms and sediments revealing former ice sheets of the arctic shelf that inundated northern Russia. It shows that a peculiar Siberian type of inland glaciation is inferred from preserved Ice Age features. This type of glacial environment implies arrested landscape evolution in continental climates with fossil glacial ice surviving within the conservative permafrost. The contributions here delve into the problem of the size and age of the last glaciation intensely discussed in the international literature. This is of broad interest because its solution is paramount for global climatic models and the reconstruction of Circum-Arctic paleoenvironments. It is also essential for understanding natural conditions of early human migration into the Arctic. Another point of interest is the book’s discussion of the profound impact of reconstructed glaciers on the tectonic structure and distribution of petroleum reserves.
Book Synopsis Ice-marginal and Periglacial Processes and Sediments by : Ireneo Peter Martini
Download or read book Ice-marginal and Periglacial Processes and Sediments written by Ireneo Peter Martini and published by Geological Society of London. This book was released on 2011 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: Understanding the sediments deposited by glaciers or other cold-climate processes assumes enhanced significance in the context of current global warming and the predicted melt and retreat of glaciers and ice sheets. This volume analyses glacial, proglacial and periglacial settings. Papers include topics such as sedimentation at termini of tidewater glaciers, poorly understood high-mountain features, and slope and aeolian deposits that have been sourced in glacial and periglacial regions and subsequently transported and deposited by azonal processes. Difficulties encountered in inferring Pleistocene and pre-Pleistocene cold-climate conditions when the sedimentary record lacks specific diagnostic indicators are discussed. The main objective of this volume is to establish the validity and limitations of the evidence that is used to achieve reliable palaeogeographic and palaeoclimatic reconstructions. On the much longer geological timescale, an understanding of ice-marginal and periglacial environments may better prepare us for the unavoidable reversal towards cooler and perhaps even glacial times in the future.
Book Synopsis Modern Glacial Environments by : John Menzies
Download or read book Modern Glacial Environments written by John Menzies and published by Pergamon. This book was released on 1995-06 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Glacial Sedimentary Processes and Products by : Michael J. Hambrey
Download or read book Glacial Sedimentary Processes and Products written by Michael J. Hambrey and published by Wiley-Blackwell. This book was released on 2007 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt: ""The wide range of time periods, methods and concepts discussed should be of interest across many subject areas ... A wide mix of research published in this volume."" (Holocene, December 2008).
Book Synopsis Glacial Deposits in Northeast Europe by : J. Ehlers
Download or read book Glacial Deposits in Northeast Europe written by J. Ehlers and published by CRC Press. This book was released on 1995-01-01 with total page 636 pages. Available in PDF, EPUB and Kindle. Book excerpt: Until now no overview of the Quaternary deposits of northeastern Europe has been available. This book fills the gap. It presents the state of research on Quaternary stratigraphy and geology, with emphasis on glacial deposits, discusses the general scientific ideas and gives an overview of the methods of investigation, some of which have rarely been applied elsewhere. It has become apparent that the region covered has many environmental problems, and a proper understanding of the Quaternary deposits is a basic requirement for dealing with them. The same is true for civil engineering. In the formerly glaciated areas almost all construction sites for roads and houses will encounter glacial deposits. This volume provides an authoritative and fascinating overview for anyone planning to venture into this field. In its 53 regional chapters the book covers Finland, Estonia, Latvia, Lithuania, Russia, Ukraine, Belarus, Poland, the Czech Republic and eastern Germany. From the text it becomes clear that not all the stratigraphical schemes are yet fully compatible or comprehensible. There can be no doubt, however, that the east was subjected to very extensive ice advances during the earlier Pleistocene. Also, in contrast to western Europe, there was a significant Early Weichselian ice advance, although not as extensive as the last, Late Weichselian event. The book is illustrated by 421 figures and 74 colour plates (mostly photographs). There are 23 tables, a detailed index and a list of over 1000 references, providing a unique collection of northeastern European geoscience literature, much of which has so far escaped the attention of western scientists. The volume, composed of contributions by 60 scientists, completes the trilogy on glacial deposits of northern Europe. Together with its two companion volumes, the Glacial deposits in North-West Europe and the Glacial Deposits in Great Britain and Ireland, it represents an invaluable source of information for the geoscientist, the advanced student or the amateur.
Book Synopsis Impact of Glacio-lacustrine Interactions on Ice-sheet Dynamics by : Sebastian Hinck
Download or read book Impact of Glacio-lacustrine Interactions on Ice-sheet Dynamics written by Sebastian Hinck and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Geological records show that large proglacial lakes existed along the land-terminating margins of the Quaternary ice sheets. The major lakes formed in basins that were left deeply depressed due to delayed glacial isostatic adjustment (GIA) when the ice sheets retreated. As the environment around the retreating ice margin is quite dynamic, the lake basins constantly change. Where an ice sheet and proglacial lake are in contact, the dynamics are similar to a marine terminating ice-sheet margin. Such lacustrine boundary conditions cause changes in the ice-sheet's geometry, stress balance and frontal ablation and therefore affect its entire mass balance. Despite this, dynamically evolving proglacial lakes have rarely been considered in detail in ice-sheet modelling endeavors. In this Ph.D. project, the impact of proglacial lakes on the ice-sheet dynamics are investigated using numerical methods. For this reason, I implemented a new proglacial lake boundary model into the Parallel Ice Sheet Model (PISM). This model computes the lake basins each timestep according to the dynamic geometry of the ice-sheet and topography. The lake-ice interface is implemented as a generalization of the marine boundary of PISM. In the first study, the underlying algorithm, LakeCC, is tested to determine if it is capable of reconstructing known lakes. Therefore, it is applied to paleo-topographic reconstructions of North America. In a second study, the impact of the PISM-LakeCC model on the ice-sheet dynamics is tested by running several simplified experiments of the glacial retreat of the North American ice sheets after the Last Glacial Maximum (LGM). Compared to control runs, the lake experiments exhibit an accelerated glacial retreat. Furthermore, for the Laurentide ice sheet (LIS), the presence of lakes triggers a process similar to marine ice sheet instability (MISI), which causes the final collapse of the ice saddle over Hudson Bay.
Book Synopsis Paleoglaciological Dynamics in Northern Manitoba and the Subglacial Bed Mosaic by : Michelle Trommelen
Download or read book Paleoglaciological Dynamics in Northern Manitoba and the Subglacial Bed Mosaic written by Michelle Trommelen and published by . This book was released on 2013 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt: During the last glacial maximum (LGM), some 20 ka ago, northern Manitoba was situated beneath 3 to 4.5 km of ice, on the outer fringe of a major ice spreading center of the Laurentide Ice Sheet. The region has also been affected by major paleoglaciological changes linked to multiple source areas, migration of ice centres, and ice-sheet thickening/thinning over multiple glacial cycles. The net effect of this evolution is a very complex geological record, which has major implications for ice-sheet reconstructions and drift prospecting. Theory-based hypothesis for the region suggest initial advance-phase deposition was followed by either net-erosive or cold-based conditions for much of the glacial cycle. In contrast, observation-based reconstructions of ice-sheet behaviour consider the glacial landscape to have been predominately formed by near-complete overprinting during warm-based deglaciation. Some complexity has been recognized in sediment-landform records, but new insights into glacial dynamics and sediment-landscape evolution are needed. Systematic mapping (remote-sensing) and fieldwork (ice-flow indicators, till composition, ground truthing) in northeastern Manitoba has led to the recognition of spatio-temporal variability in landscape (streamlined-landform event-flowsets) and landform (micro and meso-scale ice-flow indicator records) and till composition inheritance. In particular, analysis of the spatio-temporal characteristics of the subglacial landscape led to the recognition of disjoint zones with internally-consistent assembly histories - termed glacial terrain zones (GTZ). These GTZ were then classified as (1) relict-glacial, (2) palimpsest, or (3) deglacial in nature. Generally, (1) is interpreted as pre-LGM, (2) may include pre-LGM terrain but also LGM to early deglaciation (ice margin still far from study area; ice sheet thinning phase) and (3) was formed during the final ice retreat phase. The resultant surface till composition within relict and palimpsest GTZs is a spatial mosaic interpreted to reflect variable intensities in modification (overprinting) and preservation (inheritance) of a predominately pre-deglacial till sheet. In these regions, streamlined landforms parallel to a known deglacial ice-flow orientation were unable to overprint the underlying inherited glacial sediment composition. Secondly, field investigations (sedimentology, clast fabrics, till composition, near-surface S-wave seismic surveys) have characterized the widespread Rogen moraine terrain. These transverse subglacial ridges are spatially associated with streamlined landforms, are situated on regionally low-lying terrain without topographic constraints and may have small bedrock 'knob' obstacles at their up-ice base. This thesis assesses Rogen moraine formation hypotheses within the new paleoglaciologic context of northern Manitoba, favours an instability mechanism for formation, and provides important field data against which further formation hypothesis should be tested. The main insight of this study is not a detailed reconstruction (local history), but rather a series of forms of evidence suggesting that the glacial history of the region is one of prevailing patchy low-erosion conditions which favored preservation of a fragmentary record of non-coeval and sometimes contrasting warm-based (more dynamic) conditions. Despite being near a thick inner-core region of the Laurentide Ice Sheet, where basal conditions are generally considered stable and meltwater availability is low, the hard-bed study area was subject to local spatio-temporal shifts in subglacial conditions that led to generation of a complex palimpsest glacial landscape. Spatial differences in the preservation of older streamlined landforms, variably drumlinized Rogen moraine and the concentrations of inherited subglacial detritus all culminate in a hypothesis that suggests the subglacial landscape was continually evolving and subject to spatio-temporal variations in the intensity of ice-bed processes throughout the last glaciation (subglacial bed mosaic). Based on the new glacial history, and a general lack of ice-marginal landsystems, most warm-based ice-flow phases likely occurred near LGM - with only weak overprinting during late deglaciation. The idea of landform generation at patches within a transient subglacial bed mosaic now allows for a close association between subglacial drumlins and Rogen moraine ridges, that may have formed by disconnected and not necessarily coeval or related processes. This mosaic, of slow to non-flowing basal ice ('sticky regions') and wet-based flowing-ice patches, also helps to explain preservation of immature landforms (Rogen moraine) and relict or palimpsest terrain. Sticky regions may have formed by at least two different mechanisms: localized heterogeneous switches in basal thermal regime (frozen-bed patches), or within a warm-based subglacial environment from wet to stiff, dewatered till.
Author :International Association for Quaternary Research. Regional Group "Glacigenic Deposits in the Southwest Parts of the Scandinavian Ice Sheet. Conference Publisher : ISBN 13 : Total Pages :84 pages Book Rating :4.F/5 ( download)
Book Synopsis Glacigenic Deposits in the Southwest Parts of the Scandinavian Ice Sheet by : International Association for Quaternary Research. Regional Group "Glacigenic Deposits in the Southwest Parts of the Scandinavian Ice Sheet. Conference
Download or read book Glacigenic Deposits in the Southwest Parts of the Scandinavian Ice Sheet written by International Association for Quaternary Research. Regional Group "Glacigenic Deposits in the Southwest Parts of the Scandinavian Ice Sheet. Conference and published by . This book was released on 1981 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Glacial Geology and Palaeo-ice Dynamics of Two Ice-sheet Margins, Taymyr Peninsula, Siberia and Jameson Land, East Greenland by : Helena Alexanderson
Download or read book Glacial Geology and Palaeo-ice Dynamics of Two Ice-sheet Margins, Taymyr Peninsula, Siberia and Jameson Land, East Greenland written by Helena Alexanderson and published by . This book was released on 2002 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis International Union for Quaternary Research, XIIth International Congress by : International Union for Quaternary Research. Congress
Download or read book International Union for Quaternary Research, XIIth International Congress written by International Union for Quaternary Research. Congress and published by . This book was released on 1987 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt:
