Signatur:
93-0167
;
AWI G3-16-76227-1
;
AWI G3-16-76227-2
Beschreibung / Inhaltsverzeichnis:
Oxygen isotope composition of ground ice (application to paleogeocryological reconstructions) is an encyclopedic synthesis of northern Eurasia cryolithozone quaternary geology, with respect to the question of permafrost response to climate change. It is written in Russian but adapted for the English reader; the contents, all figure captions and summary are translated into English. Considerable information has become available on about 50 sequences of syncryogenic late quaternary sediments from Yamal and Gydan Peninsulas, North and Central Yakutia, Chukotka, Magadan and Transbaikal Regions. They were studied by complex geocryologic analysis. The results of sound research encompassing this extensive region will be not only highly important fpr geocryology but would also contribute significantly to both quaternary studies and the present international emphasis on programs involving climate and global changes. This permits interregional cryostratigraphic correlations and paleogeocryologic reconstructions. Chronologic dating is accomplished with hundreds of radiocarbon dates. Winter temperature reconstructions are based on oxygen - 18 content changes in syngenetic ice wedges. Summer temperatures are reconstructed by modificated interpretations of palynologic data. Soundly based reconstructions of summer and winter temperatures and of permafrost boundaries reflecting the influence of climate change are valuable. The book contains numerous diagrams, tables of 14C, 18O, pollen and hydrochemical data. A catalogue of dated mammoth remains is also presented. Virtually all known determinations of 18O in permafrost and other oxygen containing media are collated. Included also are original paleoclimatic and paleogeocryologic maps for, winter and summer separately for key periods of last 40 kyr. The interdisciplinary character of the monograph will be useful for scientists specializing in quaternary geology, paleoclimatology, geocryology and for students of geology, geography and ecology.
Materialart:
Monographie ausleihbar
Seiten:
In 2 Bd.
Anmerkung:
Contents: Preface. - PART 1. TASKS AND METHODS OF CONUGATED QUANTITATIVE PALEOGEOCRYOLOGICAL ANALYSIS. - 1. Lithological, geochemical and ecological indicators of paleocryogenic dynamics. - 1.1. Cryolithological indicators. - 1.2. Cryohydrochemical indicators. - 1.3. Palynological and botanical indicators. - 1.4 Macrofauna indicators (Mammoth fauna). - 2. The main daitng methods of syncryogenic permafrost thickness and ground ice. - 3. Oxygen isotope composition of ground ice as paleogeocryological indicator. - 3.1. Oxygen isotope content in repeated ice wedges of synocryogenic thicknesses. - 3.2. Oxygen isotope content in texture forming ice. - 3.3. Oxygen isotope content in ice sheet-like deposits. - 3.4. Conservation of original oxygen isotope records. - 3.5. Paleotemperature interpretation features of oxygen isotope records. - 3.6. Global and interregional correlations of oxygen isotope diagrams from different natural objects. - PART 2. DEVELOPMENT OF LATE PLEISTOCENE SYNCRYOGENIC PERMAFROST THICKNESSES. - 4. Reference sequences of Late Pleistocene syncryogenic thicknesses. - 4.1. North of Western Siberia sequences. - 4.2. Northern Yakutia sequences. - 4.3. Chuckotka sequences. - 4.4. Central Yakutia sequences. - 5. Landscape, climate, conditions which had been defined Late Pleistocene syncryolithogenesis. - 5.1. Arctic coast line evolution as important factor Late Pleistocene paleocryodynamics. - 5.2. Biocenose development and summer temperatures fluctuations during Late Pleistocene cryochron. - 5.3. Evolution of regional and global winter climate characteristics. - 5.4. Main features of cryolithozone dynamics during Late Pleistocene. - PART 3. DEVELOPMENT FEATURES OF HOLOCENE SYNCRYOGENIC PERMAFROST THICKNESSES. - 6. Criteria for definition of lower boundary of Holocene. - 7. Reference sequences of Holocene syncryogenic permafrost thicknesses. - 7.1. North of Western Siberia sequences. - 7.2. Northern Yakutia sequences. - 7.3. Central Yakutia sequences. - 7.4. Trans-Baikal sequences. - 7.5. Chuckotka sequences. - 7.6. Interregional correlation of references sequences of Holocene syncryolithogen thicknesses and problem of Holocene "optimum". - 8. Landscape, climate conditions which had been defined Holocene syncryolithogenesis. - 8.1. Biocenose development and summer temperatures during "optimum" of Holocene. - 8.2. Evolution of winter climatic characteristics. - 8.3. Main features of cryolithozone dynamics during Holocene. - 9. Some features of Global Isotope Exchange dynamics and air transportation in East sector of Northern hemisphere during Late Quaternary. - Conclusion. - Literature. - Summary.
,
In kyrill. Schr.
,
In russ. Spr. mit engl. Zsfassung
Standort:
AWI Lesesaal
Standort:
AWI Lesesaal
Zweigbibliothek:
AWI Bibliothek
Zweigbibliothek:
AWI Bibliothek
Zweigbibliothek:
AWI Bibliothek
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