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Author : Marja Liisa Räisänen
Publisher :
ISBN 13 :
Total Pages : 84 pages
Book Rating : 4.F/5 ( download)
Download or read book Complexity of Glacial Dispersal and Hydromorphic Processes in Till Geochemistry written by Marja Liisa Räisänen and published by . This book was released on 2003 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 440 pages
Book Rating : 4.3/5 (243 download)
Download or read book Geological Survey of Finland, Special Paper written by and published by . This book was released on 1987 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Heather E. Campbell
Publisher :
ISBN 13 : 9781554710416
Total Pages : 501 pages
Book Rating : 4.7/5 (14 download)
Download or read book Examination of Glacial Dispersal and Use of Cold Vapor Atomic Fluorescence Spectrometry at Mount Fronsac North, New Brunswick written by Heather E. Campbell and published by . This book was released on 2011 with total page 501 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The mobility of mercury in both bedrock and surficial environments has made it an ideal geochemical pathfinder element in detecting buried ore deposits for over 80 years. Recent advances in analytical techniques, specifically cold vapor atomic fluorescence spectrometry have made it possible to determine minute (0.05 ppb) concentrations of mercury in geological materials. This analytical method was successfully used to determine mercury concentrations in 236 C-horizon (till) samples overlying the Mount Fronsac North volcanogenic sediment hosted massive sulfide (VSHMS) deposit in the BMC, northern New Brunswick. Concentrations for 53 elements were determined using ICP-MS/ES analysis. Mercury concentrations analyzed by ICP-MS show high correlation with concentrations found by cold vapor atomic fluorescence spectrometry. From mapping till geochemical data, three dispersal patterns were observed in glacial till: 1) palimpsest (Pb, Ag, Cu, As, Sb, Au, Mo), related to pre-glacial colluvial distribution of mineralized gossan, 2) ribbon (Ni, Co, Cr), related to the occurrence of a gabbro and Mnrich shales in rocks surrounding the mineralized zone and 3) an arcuate pattern (Hg, Cd,) related to bedrock alteration and possible post-glacial ionic mobility. Concentration gains of Mo, As, Sb, Cu V and Hg in gossan and gains of Zn, Au, Cd, V, Ba, Co, Se, Sr and Hg in till were calculated using tin (Sn) as a conservative element. Concentration gains and losses of elements in till indicate the main processes responsible for element signatures in till over the Mount Fronsac North deposit are complex and can be attributed to five processes: 1) formation of element halos from ore deposition, 2) preglacial weathering of primary sulfides resulting in gossan formation, 3) pre-glacial colluvial and hydromorphic redistribution of gossanous material, 4) west to east and southwest to northeast mechanical transport of mineralized bedrock by glaciers and 5) ionic migration of cations and anions due to electrochemical reactions between wall rock and sulfides."--Pages iii-iv.
Author : David J. A. Evans
Publisher : Routledge
ISBN 13 : 1444119141
Total Pages : 297 pages
Book Rating : 4.4/5 (441 download)
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.
Author : Geologian tutkimuskeskus (Finland)
Publisher :
ISBN 13 :
Total Pages : 252 pages
Book Rating : 4.F/5 ( download)
Download or read book Annual Report written by Geologian tutkimuskeskus (Finland) and published by . This book was released on 2002 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : David J. A. Evans
Publisher : John Wiley & Sons
ISBN 13 : 111865255X
Total Pages : 636 pages
Book Rating : 4.1/5 (186 download)
Download or read book Till written by David J. A. Evans and published by John Wiley & Sons. This book was released on 2017-10-16 with total page 636 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides the first comprehensive review of the current state of the science on tills It is critical that glacial scientists continue to refine their interpretations of ancient archives of subglacial processes, specifically those represented by tills and associated deposits, as they form the most widespread and accessible record of processes at the ice-bed interface. Unfortunately, despite a long history of investigation and a lexicon of process-based nomenclature, glacial sedimentologists have yet to reach a consensus on diagnostic criteria for identifying till genesis in the geological record. What should be called till? Based on the author’s extensive field research, as well as the latest literature on the subject, this book attempts to provide a definitive answer to that question. It critically reviews the global till literature and experimental and laboratory-based assessments of subglacial processes, as well as the theoretical constructs that have emerged from process sedimentology over the past century. Drawing on a wide range of knowledge bases, David Evans develops a more precise, contemporary till nomenclature and new investigatory strategies for understanding a critical aspect of glacial process sedimentology. Provides an in-depth discussion of subglacial sedimentary processes, with an emphasis on the origins of till matrix and terminal grade and the latest observations on till evolution Describes contemporary laboratory and modelling experiments on till evolution and techniques for measuring strain signatures in glacial deposits Develops an updated till nomenclature based on an array of knowledge bases and describes new strategies for field description and analysis of glacial diamictons Written by an internationally recognised expert in the field, this book represents an important step forward in the modern understanding of glacial process sedimentology. As such, Till: A Glacial Process Sedimentology is an indispensable resource for advanced undergraduates and researchers in sedimentology, glacier science and related areas.
Author : Geological Society of London
Publisher : Geological Society of London
ISBN 13 : 9781862390829
Total Pages : 368 pages
Book Rating : 4.3/5 (98 download)
Download or read book Drift Exploration in Glaciated Terrain written by Geological Society of London and published by Geological Society of London. This book was released on 2001 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume describes the use of till geochemical and indicator mineral methods for mineral exploration in the glaciated terrain of Canada. The principles and examples described in this volume will have direct applications for exploration companies looking for diamonds, precious and base metals and uranium in glaciated parts of North America, northern Europe and Asia and mountainous regions of South America.
Author : Ireneo Peter Martini
Publisher : Geological Society of London
ISBN 13 : 9781862393271
Total Pages : 304 pages
Book Rating : 4.3/5 (932 download)
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.
Author : N. Eyles
Publisher : Elsevier
ISBN 13 : 1483286134
Total Pages : 424 pages
Book Rating : 4.4/5 (832 download)
Download or read book Glacial Geology written by N. Eyles and published by Elsevier. This book was released on 2013-10-22 with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt: An introduction for courses that involve some knowledge of glacial geology and sediments of formerly glaciated terrains. The early chapters describe depositional processes at modern glacier and ice-sheet margins relating sediments and landforms in recurring "landsystems". Later chapters portray the distribution of these landsystems in Pleistocene glaciated terrains of the mid-latitudes, focussing on commonly encountered problems in various fields from stratigraphic and sedimentological investigations to construction problems relating to roads and dams. The resulting text is a summation of a large body of literature previously accessible only to specialists. A substantial reference list is complemented by cross-references throughout.
Author : David M. Mickelson
Publisher :
ISBN 13 :
Total Pages : 203 pages
Book Rating : 4.:/5 (131 download)
Download or read book Glacial Processes Past and Present written by David M. Mickelson and published by . This book was released on 2018 with total page 203 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 410 pages
Book Rating : 4.F/5 ( download)
Download or read book Geochemistry written by and published by . This book was released on 2005 with total page 410 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : M. Sharp
Publisher : John Wiley & Sons
ISBN 13 :
Total Pages : 356 pages
Book Rating : 4.:/5 (318 download)
Download or read book Glacier Hydrology and Hydrochemistry written by M. Sharp and published by John Wiley & Sons. This book was released on 1998-10-20 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt: The last decade has been a period of rapid advances in glacier hydrology and hydrochemistry. These have resulted from the application of new technologies to the direct observation of englacial and subglacial drainage systems via boreholes, from theoretical advances and from increased interactions between fieldworkers and modellers. This collection of papers captures the spirit of these advances highlighting new methodologies, the change in character of hydrological models from lumped conceptual models to physically based, distributed models, and the changing role of field studies in glacier hydrological investigations. Major themes identified in the book are: approaches to defining the structure of drainage systems in cold and temperate glaciers; investigations of the linkages between surface and subsurface components of these systems, and of hydraulic interactions between different elements of subglacial systems; seasonal changes in drainage system properties at local and glacier wide scales; controls on meltwater quality; the integration of field and modelling studies; and problems of scaling up results from studies of valley glaciers to the ice sheet scale.
Author : Richard Foster Flint
Publisher : John Wiley & Sons
ISBN 13 :
Total Pages : 910 pages
Book Rating : 4.:/5 (319 download)
Download or read book Glacial and Quaternary Geology written by Richard Foster Flint and published by John Wiley & Sons. This book was released on 1971 with total page 910 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This volume contains new materials which include stratigraphy, sea floor stratigraphy and isotopic geochemistry including radiometric dating. The work retains the conjunction of two entities: systematic treatment of "glacial geology" involving process and strategraphic, environmental and historical discussion of the Quaternary."
Author : R. A. Klassen
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (43 download)
Download or read book Glacial History, Drift Composition, and Till Geochemistry, Labrador written by R. A. Klassen and published by . This book was released on 1990 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Geologian tutkimuskeskus (Finland)
Publisher :
ISBN 13 :
Total Pages : 468 pages
Book Rating : 4.3/5 (243 download)
Download or read book Geological Survey of Finland, Current Research 2003-2004 written by Geologian tutkimuskeskus (Finland) and published by . This book was released on 2005 with total page 468 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Isabelle McMartin
Publisher :
ISBN 13 :
Total Pages : 240 pages
Book Rating : 4.F/5 ( download)
Download or read book Application of Till and Stream Sediment Heavy Mineral and Geochemical Methods to Mineral Exploration in Western and Northern Canada written by Isabelle McMartin and published by . This book was released on 2007 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : D. J. Drewry
Publisher : Hodder Arnold
ISBN 13 : 9780713163902
Total Pages : 276 pages
Book Rating : 4.1/5 (639 download)
Download or read book Glacial Geologic Processes written by D. J. Drewry and published by Hodder Arnold. This book was released on 1986 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt: Gives an overview of important aspects of glaciology and glacier hydrology relevant to an understanding of erosion and sedimentation. A comprehensive and critical examination of the processes of glacial erosion and glacial sedimentation, focussing on physical qualities and relationships.
