Download or read book Post glacial Sedimentation and History in Lake Manitoba written by James T. Teller and published by . This book was released on 1979 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Sedimentology and Post glacial History of Lake Manitoba written by William Last and published by . This book was released on 1980 with total page 1374 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lake Manitoba is a large (4700 km2), shallow (z = 4.0 m), brackish water lake located in south-central Manitoba. Sediment cores up to 13'5 m in length were taken at 50 offshore sites in the main South Basin of the lake. These cores were analyzed at varying intensities for over 40 physical, chemical, and mineralogical sediment parameters. The modern offshore sediments of the South Basin are mainly silts and clayey silts, and are composed of detrital and authigenic carbonates (20-60%), clay minerals (20-50%), organic matter (15-30%), quartz (15-30%), and feldspar (2-10%). Quartz, feldspar, and dolomite are in greatest abundance around the margin of the offshore basin, whereas organic matter, calcite, and clay minerals are concentrated in the central portion of the basin. The authigenic calcite, precipitated in response to high levels of supersaturation brought about by evaporative concentration and extensive phytoplankton productivity during the ice-free season, contains an average of about 7 mole percent MgCO3, in the crystal lattice. The post-glacial sediments in the South Basin of Lake Manitoba are composed dominantly of silty clay and clayey silt except toward the extreme southern end of the basin where less clayey and more sandy sediments are common. The clay content, quartz, feldspar, and dolomite as well as K, Na,Fe,and Mg show a general increase with depth in the sediment cores,' while silt, moisture content, organic matter, calcite, and Ca decrease with depth. On the basis of variations in these and other sediment parameters investigated, six lithostratigraphic units are recognized in the post-glacial record of the lake (Units A, B, C, D, E, and F from bottom to top)...
Download or read book Global Geological Record of Lake Basins Volume 1 written by E. Gierlowski-Kordesch and published by Cambridge University Press. This book was released on 2006-11-23 with total page 470 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the first of a series of volumes that will assess key lacustrine sequences worldwide.
Download or read book Saline Lakes written by John M. Melack and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 317 pages. Available in PDF, EPUB and Kindle. Book excerpt: Limnological research on saline lakes is practiced by a growing cadre of scientists active worldwide in a diversity of disciplines. Every three years since 1979, an international symposium on inland saline waters has served to strengthen and expand the scope of the studies. Promising areas for further research especially well suited to saline lakes include the comparative physiology of adaptation to osmotic stresses, the role of microbial and protozoan communities in nutrient dynamics and biotic interactions in ecosystems with few species. The Third International Symposium on Inland Saline Lakes was held at the University of Nairobi, Nairobi, Kenya, under the auspices of the Societas Internationalis Limnologiae (SIL). The symposium was sponsored by and received financial or other support from the U.S. National Science Foundation (International Program), United Nations Environment Program, University of California, Santa Barbara, and University of Nairobi. The proceedings occurred for three days (28-31 August, 1985) and were attended by 33 scientists from 14 countries (see list of Participants). On the day prior to the first formal session an afternoon trip to Lake Magadi and salt works was held. The tribulations of this excursion served to acquaint the participants with each other and with the realities of exploring the African bush. A three day post-congress expedition to the rift valley included visits to spectacular saline lakes such as Nakuru and Bogoria. Much of the meeting's and excursion's success is owed to the efforts of the local organizer, Dr. Stephen G.
Download or read book GAC Special Paper written by Geological Association of Canada and published by . This book was released on 1956 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Tracking Environmental Change Using Lake Sediments written by H. John B. Birks and published by Springer Science & Business Media. This book was released on 2012-04-06 with total page 751 pages. Available in PDF, EPUB and Kindle. Book excerpt: Numerical and statistical methods have rapidly become part of a palaeolimnologist’s tool-kit. They are used to explore and summarise complex data, reconstruct past environmental variables from fossil assemblages, and test competing hypotheses about the causes of observed changes in lake biota through history. This book brings together a wide array of numerical and statistical techniques currently available for use in palaeolimnology and other branches of palaeoecology. Visit http://extras.springer.com the Springer's Extras website to view data-sets, figures, software, and R scripts used or mentioned in this book.
Download or read book Late glacial postglacial Vegetational History of the Pretty Lake Region written by Alice Simms Williams and published by . This book was released on 1974 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Quaternary Dating Methods written by W.C. Mahaney and published by Elsevier. This book was released on 2000-04-01 with total page 449 pages. Available in PDF, EPUB and Kindle. Book excerpt: Quaternary Dating Methods
Download or read book Geological Survey Bulletin written by and published by . This book was released on 1972 with total page 1492 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Late glacial and Early Postglacial Vegetation and Climate Change in the Northeastern Great Plains written by Catherine Helen Yansa and published by . This book was released on 2002 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book After the Ice Age written by E.C. Pielou and published by University of Chicago Press. This book was released on 2008-04-15 with total page 380 pages. Available in PDF, EPUB and Kindle. Book excerpt: The fascinating story of how a harsh terrain that resembled modern Antarctica has been transformed gradually into the forests, grasslands, and wetlands we know today.
Download or read book Post glacial Vegetation of Canada written by J. C. Ritchie and published by Cambridge University Press. This book was released on 2004-04 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book brings together all the available information about the complex history of vegetational and environmental change in Canada since the last Ice Age. Professor Ritchie discusses the roles of climactic change, wildfires, diseases, and biological factors in controlling the emerging patterns of new plant growth.
Download or read book Environmental History and Palaeolimnology written by J.P. Smith and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 375 pages. Available in PDF, EPUB and Kindle. Book excerpt: The fifth International Symposium on Palaeolimnology was held at Ambleside in the English Lake District from August 31 to September 6, 1989. During the 65 papers were presented at seven sessions and 52 posters symposium displayed. Three late afternoon/evening special lectures were given, one of which was a memorial to the late Ed. Deevey, to whom this volume is dedicated. Associated with the symposium were five excursions to various parts of the UK and Ireland, and a visit to the laboratories of the Freshwater Biological Association and Institute of Freshwater Ecology. Conference participants were also invited to a buffet party and visit to the Lake District National Park Centre at Brockhole as the guests of the Park Authority. The local organising committee for the symposium also formed the editorial panel for this volume. They included: Peter Appleby, Rick Battarbee, John Dearing, Roger Flower, Elizabeth Haworth, Frank Oldfield, Paddy O'Sullivan and John Smith. Support for the conference is gratefully acknowledged from the following organisations; The Royal Society Department of the Environment US Army European Research Office Barclays Bank Central Electricity Generating Board Lake District Special Planning Board South Lakeland District Council Charlotte Mason College Molspin Limited The conference is also indebted to the many individuals who provided such effective help in the preparation and smooth running of the programme. J. P. SMITH May 1991 Hydrobiologia 214: 1-7, 1991.
Download or read book Glacial and Environmental Geology of Northeastern Manitoba written by L. A. Dredge and published by . This book was released on 1992 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt: The report and accompanying map describe and interpret the terrain conditions across 48,000 km2 of the coast and hinterland of Hudson Bay. The surface mapping of materials was combined with a study of river exposures in order to reconstruct the preglacial and glacial evolution of the landscape, and postglacial changes in permafrost, climate, and sea level. The geological interpretation was used to locate anomalously high concentrations of minerals of economic value, including gold and uranium, assess aggregate sources, identify areas of sensitive permafrost terrain, and to predict future environmental change.
Download or read book Tracking Environmental Change Using Lake Sediments written by William M. Last and published by Springer Science & Business Media. This book was released on 2006-04-11 with total page 532 pages. Available in PDF, EPUB and Kindle. Book excerpt: Theory Instrumentation NIR analysis of sediment samples Uses of NIRS in palaeolimnology Future perspectives Summary References Fly-ash particles. Neil Rose 319 12. Introduction A brief history Methods of extraction and enumeration Temporal distribution Spatial distribution Source apportionment The future Summary Acknowledgements References Part III: Stable Isotope Techniques 13. Application of stable isotope techniques to inorganic and biogenic carbonates. Emi Ito 351 Introduction Nomenclature and systematics of lake-water Mg/Ca and Sr/Ca ratios of lake-water of dissolved inorganic carbon (DIC) Carbonates in lake-sediments Mollusks Ostracodes Charaphytes Isotope analysis Preparation of carbonate samples for isotope analysis Conclusions Summary Acknowledgments References 14. Carbon and oxygen isotope analysis of lake sediment cellulose: methods and applications. Brent B. Wolfe, Thomas W. D. Edwards, Richard J. Elgood & Kristina R. M. Beuning 373 xi Introduction Stable isotope tracers in lake Historical development Methods Key criteria for paleohydrologic reconstruction Applications Future research directions Summary Acknowledgements References Nitrogen isotopes in palaeolimnology. Michael R. Talbot 15. 401 Introduction Nitrogen in lakes: forms and distribution Nitrogen isotopes Nitrogen isotope studies in palaeolimnology: sampling and measurement Some examples Closing remarks Summary Acknowledgments References Glossary, acronyms and abbreviations 441 Index 493 xiii PREFACE The explosive growth of paleolimnology over the past two decades has provided impetus for the publication of this series of monographs detailing the numerous advances and new techniques being applied to the interpretation of lake histories. This is the second volume in the series and deals mainly with physical and geochemical analytical techniques.
Download or read book Fluvial Sedimentology VI written by Norman D. Smith and published by John Wiley & Sons. This book was released on 2009-03-16 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt: Understanding of rivers and their sediments, both as modern systems and as ancient counterparts in the geological record, has progressed steadily but markedly over the past several decades, with contributions by practitioners in diverse fields of geosciences and engineering. This book contains 31 papers, with authors from 13 countries, who participated in the Sixth International Conference on Fluvial Sedimentology held in Cape Town, South Africa, in 1977. True to the nature of these quadrennial conferences, the papers in this book discuss a broad range of fluvial subjects that include the character of bedforms and sediment transport in river channels, morphological and sedimentological features of modern fluvial environments, modern and ancient avulsions, internal and external controls on the behaviour of river systems, and the facies and architectural organization of alluvial deposits. A specialist volume detailing the latest advances in fluvial sedimentology. Authorship includes the leaders in the field. If you are a member of the International Association of Sedimentologists, for purchasing details, please see: http://www.iasnet.org/publications/details.asp?code=SP28
Download or read book Canadian Journal of Earth Sciences written by and published by . This book was released on 2011 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt:
