Download or read book Quaternary Geology of the Geneva Bay Lake Geneva Switzerland written by Andrea Moscariello and published by . This book was released on 1996 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt: La disparition graduelle du glacier de la cuvette du Petit Lac est représentée par les épais sédiments glacio-lacustres où la sédimentation par décantation depuis les icebergs en fusion a joué un rôle important.
Download or read book Landscapes and Landforms of Switzerland written by Emmanuel Reynard and published by Springer Nature. This book was released on 2020-07-09 with total page 425 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a comprehensive overview of the Landscapes and Landforms of Switzerland. It covers the country’s geological and tectonic context, together with its climatic context, geomorphological history, structural and karstic landscapes, glacial and periglacial landscapes, landscapes with natural hazards, geomorphology and society, and the preservation of its geomorphological heritage. Richly illustrated, it presents case studies on some of the country’s most famous natural sites, including the Matterhorn, Aletsch Glacier, Sardona Tectonic Arena, and Engadine, among others.
Download or read book Holocene Delta in Western Lake Geneva and Its Palaeoenvironmental Implications written by Ira Baster and published by . This book was released on 2002 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt: Des investigations sismiques et sédimentologiques ont été entreprises dans le but d'étudier l'évolution sédimentaire de la région au large de Nyon, en relation avec les processus lacustres et les changements climatiques qui ont eu lieu depuis le retrait du glacier du Rhône (18000 années BP) jusqu' à aujourd'hui. La source des sédiments a progressivement changé des eaux de fonte glaciaires aux cours d'eau locaux et un cône deltaïque, alimenté par les apports de la Promenthouse, de l'Asse et du Boiron, a commencé à se former dans la partie occidentale du Lac Léman. D'importants changements des apports sédimentaires ont eu lieu au cours de l'Holocène: six différents lobes deltaïques, progradant sur les sédiments tardiglaciaires, ont été reconnus au milieu du bassin par l'analyse séismostratigraphique. L'étude des propriétés magnétiques des séquences sédimentaires récoltées a fourni une courbe des variations séculaires du champ magnétique terrestre pour les derniers 16000 ans.
Download or read book Quaternary Subglacial Processes in Switzerland written by Julien Fiore and published by . This book was released on 2007 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Les processus sous-glaciaires quaternaires dans l'avant-pays suisse sont étudiés ici au moyen de la géomorphologie et de la sismo-stratigraphie.
Download or read book The Ice Age written by Jürgen Ehlers and published by John Wiley & Sons. This book was released on 2015-10-19 with total page 560 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a new look at the climatic history of the last 2.6 million years during the ice age, a time of extreme climatic fluctuations that have not yet ended. This period also coincides with important phases of human development from Neanderthals to modern humans, both of whom existed side by side during the last cold stage of the ice age. The ice age has seen dramatic expansions of glaciers and ice sheets, although this has been interspersed with relatively short warmer intervals like the one we live in today. The book focuses on the changing state of these glaciers and the effects of associated climate changes on a wide variety of environments (including mountains, rivers, deserts, oceans and seas) and also plants and animals. For example, at times the Sahara was green and colonized by humans, and Lake Chad covered 350,000 km2 – larger than the United Kingdom. What happened during the ice age can only be reconstructed from the traces that are left in the ground. The work of the geoscientist is similar to that of a detective who has to reconstruct the sequence of events from circumstantial evidence. The book draws on the specialisms and experience of the authors who are experts on the glacial history of the Earth. Readership: Undergraduate and postgraduate students studying the Quaternary, researchers, and anyone interested in climate change, environmental change and geology. The book provides a rich collection of illustrations and photographs to help the readers at all levels visualise the dramatic consequences of glacier expansions during the Ice Age.
Download or read book Lake Systems from the Ice Age to Industrial Time written by Daniel Ariztegui and published by Springer. This book was released on 2013-03-07 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt: During the 20th century, lake research has become an internationally recognised field of scientific activity, improving our understanding on physical, chemical and biological processes, on fresh water ecology, and water resources among others. The interdisciplinary approaches mainly developed in historical research, as performed by archaeologists and earth scientists, to reconstruct the environmental and climate history of the continents, of human settlements and culture, and to evaluate human impact on the local and global environments. The Geological Society of Switzerland publishes in this volume a selected number of contributions presented during a scientific conference on "Lake Systems from Ice Age to Industrial Time" at Yverdon from 17 to 20 October 2001.
Download or read book Geological and Structural Setting Age and Geochemistry of the Orogenic Gold Deposits at the Pataz Province Eastern Andean Cordillera Peru written by Yves Haeberlin and published by . This book was released on 2002 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt: La province de Pataz au Nord-Pérou est la plus septentrionale des ceintures paléozoïques d'or, antimoine et tungstène orogéniques (mésothermales) de la Cordillère Orientale des Andes Centrales. Longue de plus de 160 km, elle est connue pour ses veines épigénétiques de quartz aurifères riches en sulfures (ressource : 40 millions d'onces d'or). Les minéralisations, datées à ~314 Ma, sont localisées dans des fractures inverse-décrochantes dextres et d'extension le long des marges et à l'intérieur du batholite de Pataz (329 Ma) et dans les roches métasédimentaires avoisinantes. L'intrusion hôte n'exerce qu'un rôle passif dans leur genèse et fonctionne uniquement comme un réceptacle structural très favorable. La minéralisation est temporellement liée à un stade d'exhumation du bâti et à l'addition d'un flux de chaleur dans une croûte épaissie. Le piégeage de l'or au contact des sulfures microfracturées interviendrait à 5-10 km de profondeur par dilution d'un fluide salin précoce par des eaux superficielles.
Download or read book Flood and Megaflood Processes and Deposits written by I. Peter Martini and published by John Wiley & Sons. This book was released on 2009-03-05 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt: The aim of this publication is the understanding of large floods and their impact on the Earth's surface. The major objectives are: 1) to take a second look at what constitutes a megaflood that the principle of uniformitarianism is at some loss to explain and 2) to try to determine what could happen in such large floods by analyzing those that occur in front of glaciers, in alluvial-fans and in alluvial valleys. The products of these floods are presented in terms of sedimentary deposits, erosional features and damage to human activities. The volume bears out the concept that sedimentological analysis can be a powerful tool, not only for reconstructing processes that have acted on ancient landscapes, but also as a technique for risk assessment of certain troubled areas. Therefore, this volume is of interest not only to sedimentologists/gemorphlogists, but also to engineers, landuse planners and anyone interested in the interrelation between humans and the environment. If you are a member of the International Association of Sedimentologists, for purchasing details, please see: http://www.iasnet.org/publications/details.asp?code=SP32
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 Facies Analysis and Physical Stratigraphy of the Ilerdian in the Eastern Tremp Graus Basin south central Pyrenees Spain written by Alexander Conrad Waehry and published by . This book was released on 1999 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt: Les résultats de cette étude trouvent leur application dans la modélisation paléoclimatologique et la prospection ou la protection des ressources naturelles.
Download or read book Quaternary Subglacial Processes in Switzerland Geomorphology of the Plateau and Seismic Stratigraphy of Western Lake Geneva written by and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Les processus sous-glaciaires quaternaires dans l'avant-pays suisse sont étudiés ici au moyen de la géomorphologie et de la sismo-stratigraphie. L'étude géomorphologique commence par une modélisation du substat rocheux de la Suisse occidentale mettant en évidence un réseau anastomosé de vallées-tunnel sur le plateau. Puis, sur la base de modèles numériques de terrain, les formes glaciaires héritées des dernières glaciations (drumlins rocheux, drumlins, ribbed moraines, eskers et moraines) sont cartographiées et analysées. Ceci constitue la première mention de ribbed moraines sous la calotte alpine. La sismo-stratigraphie du Petit-Lac (partie occidentale du Léman) est basée sur de nombreux profils sismiques haute-résolution. 12 unités sont différenciées. La plupart d'entre elles sont des tills déposés sous le glacier flottant, à mesure que l'épaisseur de glace diminuait. De nombreuses oscillations du front glaciaire sont reconnues. L'étude révèle également la présence d'eskers associés à un éventail pro-glaciaire.
Download or read book The Record of Human climate Interactions in Lake Sediments written by and published by . This book was released on 2000 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Petrology and Geochemistry of Diverse Crustal Xenoliths Tatara San Pedro Volcanic Complex Chilean Andes written by Fidel Costa Rodriguez and published by . This book was released on 2000 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt: Deux groupes de xénolites ont été échantillonnés dans une lave dacitique du Volcán Holocène San Pedro (Andes du Chili ; 36°S, 71°51'W). Le groupe I est constituté de mélanorites à olivine qui sont co-magmatiques au volcanisme Holocène. Le groupe II consiste en des leuconorites à clinopyroxène et hornblende qui représentent des fragments du soubassement pré-quarternaire du volcan. Malgré leur différence d'âge et d'origine, ces deux groupes de xénolites ont enregistré des processus de migration de liquides riches en Si02 et H2O ou de fluides aqueux qui ont réagit avec l'olivine, le spinelle, les pyroxènes ou le plagioclase pour former d'importantes quantités de horblende (50%) et phlogopite (12%), expliquant ainsi l'abondance de hornblende dans les plutons gabbroïques calco-alcalins, comparée aux laves basaltiques ou basaltiques andésitiques présentes dans les zones de subduction.
Download or read book Carbonates in Continental Settings written by and published by Elsevier. This book was released on 2009-10-05 with total page 393 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides an up-to-date compilation of the latest research on the petrography, facies, paleonvironmental significance and economic aspects of continental carbonates. The overall organization of the book first emphasizes the descriptive aspects and processes operating on carbonate deposits in greatly varied settings, and then considers applications for basin analysis, as well as economic and historical aspects. This volume will be a valuable tool for graduate and postgraduate students as well as for experienced researchers. The second part (volume 62 in this series) will deal with the geochemistry, diagenesis and applications of carbonates in continental settings. - Covering the greatly varied aspects of carbonate deposits from continental settings deposits - Clear and easy to follow organization - Up to date information, so readers can find references from the classic literature to the most recent research
Download or read book Advances in Limnology written by and published by . This book was released on 1995 with total page 630 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Sediment Accumulation and Historical Deposition of Trace Metals and Trace Organic Compounds in the Mackenzie Delta Northwest Territories Canada written by Elisabeth Graf Pannatier and published by . This book was released on 1997 with total page 262 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cette étude examine la déposition passée et récente des contaminants dans le delta du Mackenzie (Territoires du Nord-Ouest, Canada) et tente de quantifier l'accumulation des sédiments dans le delta subaérien.
Download or read book Palaeoenvironmental Reconstruction of the Mufara Formation Upper Triassic Sicily written by Alexis Carrillat and published by . This book was released on 2001 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cette étude apporte une nouvelle contribution à la reconstruction du cadre géologique et paléoenvironnemental de la Formation Mufara (Trias supérieur, Sicile), et à la compréhension de l'évolution paléogéographique de la Néotethys. Les investigations intègrent l'analyse sédimentologique, l'analyse qualitative et quantitative des palynofaciès, la pyrolyse Rock-Eval, l'analyse des isotopes stables ([delta]13C et [delta]18O), la biostratigraphie haute résolution, et la stratigraphie génétique. L'analyse des palynofaciès et l'analyse des microfaciès ont permis de proposer un nouveau modèle environnemental pour la Formation Mufara. L'étude palynologique indique que les dépôts de la Formation Mufara se sont sédimentés entre le Longobardien terminal/Cordévolien basal et le Tuvalien terminal (Carnien). Quatre assemblages palynologiques ont été mis en évidence à l'intérieur de la phase à "Camerosporites secatus". Les analyses géochimiques associées aux palynofaciès confirment l'origine essentiellement terrestre de la matière organique et indiquent que celle-ci s'est accumulée sous des conditions oxiques à suboxiques.
