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  • 1
    Call number: AWI G5-02-0132-2
    In: Tracking environmental change using lake sediments, Vol. 2
    In: Developments in paleoenvironmental research, Vol. 2
    Type of Medium: Monograph available for loan
    Pages: XXIV, 504 S. : Ill., graph. Darst
    ISBN: 1402006284
    Series Statement: Developments in Paleoenvironmental Research 2
    Language: English
    Note: CONTENTS: Preface. - The Editors. - Aims & Scope of Developments in Paleoenvironmental Research Book Series. - Editors and Board of Advisors of Developments in Paleoenvironmental. - Research Book Series. - Contents of Volumes 1 to 4 of the Series. - Safety Considerations and Caution. - List of Contributors. - 1. An introduction to physical and geochemical methods used in paleolimnology / William M. Last & John P. Smol. - PART 1: PHYSICAL LITHOSTRATIGRAPHY TECHNIQUES. - 2. Recognition and analysis of bedding and sediment fabric features / Alan E. S. Kemp, Jean Dean, Richard B. Pearce & Jennifer Pike. - Introduction. - Approach. - Photography and imagery of the core surface. - Penetrative imaging of the core. - Sampling wet, unconsolidated or semi-consolidated sediment. - Sediment drying and resin-embedding. - Thin section preparation. - SEM analysis of laminated sediment. - Summary. - Acknowledgements. - Appendix 1: Fluid displacive low viscosity resin embedding technique Method. - References. - 3. Image analysis techniques / Timo Saarinen & Gunilla Petterson. - Introduction. - Image analysis in paleolimnology. - Material and methods. - Future perspectives. - Conclusion. - Summary. - Acknowledgements. - References. - 4. Textural analysis of lake sediments / William M. Last. - Introduction and importance of texture. - Size. - Form and fabric. - Example of application of textural studies. - Summary. - Acknowledgments. - References. - PART II. MINERALOGICAL AND GEOCHEMICAL INDICATOR TECHNIQUES. - 5. Inorganic geochemical methods in paleolimnology / J. F. Boyle. - History & scope. - Objectives of inorganic geochemical research. - Elemental analysis. - Identifying, characterizing, and quantifying sediment components. - Areas of contention. - Uses of inorganic geochemical data in palaeolimnology. - Future developments. - Summary. - Acknowledgements. - References. - 6. Mineralogical analysis of lake sediments / William M. Last. - Introduction and importance of mineralogy. - Mineralogy versus geochemistry. - Minerals in lake sediments. - A synopsis of methods. - X-ray diffraction. - Light microscopy. - Future developments. - Summary. - Acknowledgments. - References. - 7. Fluid inclusions in paleolimnological studies of chemical sediments / Tim Lowenstein & Sean T. Brennan. - Introduction. - Distinguishing primary from secondary features in chemical sediments. - Fluid inclusions in ancient chemical sediments. - Fluid inclusion liquid-vapor homogenization temperatures: paleolake temperatures. - Fluid inclusion freezing-melting behavior: paleolake chemical compositions. - Stable isotopes (δD, δ18O) from fluid inclusion waters. - Major element chemistry of fluid inclusions: paleolake water compositions. - Summary. - Acknowledgements. - References. - 8. Application of mineral magnetic techniques to paleolimnology / Per Sandgren & Ian Snowball. - Introduction. - A brief history of the application of mineral magnetic measurements to lake sediments. - Magnetic properties. - Magnetic hysteresis. - Anhysteretic remanent magnetisation (ARM). - Sample collection and preparation. - Sequence of measurements. - Hysteresis curves. - Summary. - References. - 9. Sediment organic matter / Philip A. Meyers & Jane L. Teranes. - Introduction. - Paleolimnological proxies. - Summary. - Acknowledgments. - References. - 10. Paleolimnological methods and applications for persistent organic pollutants / Jules M. Blais & Derek C. G. Muir. - Introduction. - Advances in extraction and quantitative analytical techniques for POPs in sediment. - Transfer processes in lakes. - Summary. - Acknowledgments. - References. - 11. Near-Infrared spectrometry (NIRS) in paleolimnology / Tom Korsman, Ingemar Renberg, Eigil Dabakk & Mats B. Nilsson. - Introduction. - Theory. - Instrumentation. - NIR analysis of sediment samples. - Uses of NIRS in palaeolimnology. - Future perspectives. - Summary. - References. - 12. Fly-ash particles / Neil Rose. - 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 lto. - Introduction. - Nomenclature and systematics. - δ18O of lake-water. - Mg/Ca and Sr/Ca ratios of lake-water. - δ13C 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. - Introduction. - Stable isotope tracers in lake waters - 18O, 2 H,13CHistorical development. - Methods. - Key criteria for paleohydrologic reconstruction. - Applications. - Future research directions. - Summary. - Acknowledgements. - References. - 15. Nitrogen isotopes in palaeolimnology / Michael R. Talbot. - 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. - Index.
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  • 2
    Call number: AWI G5-02-0132-4
    In: Tracking environmental change using lake sediments, Volume 4
    In: Developments in paleoenvironmental research, Volume 4
    Type of Medium: Monograph available for loan
    Pages: XXI, 217 Seiten , Illustrationen
    ISBN: 1402006586
    Series Statement: Tracking Environmental Change using Lake Sediments 4
    Language: English
    Note: CONTENTS Preface The Editors Aims & Scope of Developments in Paleoenvironmental Research Book Series Editors and Board of Advisors of Developments in Paleoenvironmental Research Book Series Contents of Volumes 1 to 4 Safety Considerations and Caution List of Contributors 1. Zoological indicators in lake sediments: an introduction / John P. Smol, H. John B. Birks & William M. Last References 2. Cladocera and other branchiopod crustaceans / A. Korhola & M. Rautio Introduction Cladocera Other crustacean branchiopods Summary Acknowledgements References 3. Midges: Chironomidae and related Diptera / I. R. Walker Introduction Overview of life cycles and ecology Methods Indicator potential Future directions Summary Acknowledgments References 4. Coleoptera and Trichoptera / S. A. Elias Introduction Sampling of insect fossils Extraction of insect fossils from sediment Specimen identification Paleoenvironmental interpretation Paleotemperature reconstructions Summary References 5. Oribatid mites / T. Solhøy Introduction Brief history Outline of methods Indicator potential Summary Acknowledgements Appendix I References 6. Bryozoan statoblasts / D. R. Francis Introduction Methods Statoblasts in sedimentary records Indicator potential Conclusions and future directions Summary Acknowledgments References 7. Ostracoda / J. A. Holmes Introduction Biology and taxonomy Ecology Ecological, palaeoecological and geochemical techniques Future directions Summary Acknowledgements References 8. Freshwater molluscs / B. B. Miller & M. J. S. Tevesz Introduction Field methods Laboratory methods Data interpretation Geochemical approaches Summary Acknowledgments References 9. Fish / W. P. Patterson & G. R. Smith Introduction Establishing the stratigraphic framework Geomorphology and paleohydrology Otoliths Summary References Glossary, Acronyms and Abbreviations Index
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  • 3
    Call number: G5-02-0132
    Series Statement: Developments in Paleoenvironmental Research
    Branch Library: AWI Library
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  • 4
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Sedimentology 36 (1989), S. 0 
    ISSN: 1365-3091
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences
    Notes: Ceylon Lake, a small salt playa located in southern Saskatchewan, is typical of many shallow ephemeral lacustrine basins found in the northern Great Plains of western Canada. The present-day brine, dominated by magnesium, sodium, and sulphate ions, shows wide variation in composition and concentration on both a temporal and a spatial basis. The modern sediments overall exhibit relatively simple facies relationships. An outer ring of coarse grained shoreline and colluvial clastics surrounds mixed fine grained clastics and salts and, in the centre of the basin, salt pan evaporites composed mainly of mirabilite, thenardite, and bloedite.Coring of the late Pleistocene and Holocene sedimentary fill shows that the lake has evolved from a relatively dilute, deep water, clastic dominated basin through a shallower, brackish water, carbonate-clastic phase, and finally into the present salt dominated playa. The thick sequence of evaporites preserved in the basin suggests evolution of the brine from a Na-rich solution to a mixed Mg-Na system. The most important post-depositional processes affecting Ceylon Lake sediments are mud diapirism and salt karsting.
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  • 5
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Sedimentology 40 (1993), S. 0 
    ISSN: 1365-3091
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences
    Notes: Freefight Lake, Canada's deepest salt lake, is a meromictic, hypersaline lake located in the most arid part of the northern Great Plains. The lake has a distinctive basin morphology, with a large expanse of seasonally flooded mud flats and sand flats adjacent to a deep, flat bottomed perennial waterbody. The mixolimnion, dominated by magnesium, sodium and sulphate ions, has an average salinity of 110 ppt and overlies a monimolimnion of 180 ppt total dissolved salts. The entire water column is strongly supersaturated with respect to a variety of calcium and magnesium carbonate minerals; the lower water mass is also saturated or supersaturated with respect to a number of very soluble sodium, magnesium and sodium + magnesium salts.The modern sedimentary processes operating in Freefight Lake give rise to six main sedimentary facies: (i) colluvium, (ii) mud flats and sand flats, (iii) algal flats, (iv) delta, (v) slope and debris apron, and (vi) deep basin. The colluvium, mud flats and sand flats, and delta facies are dominated by physical processes and consist mainly of detrital siliciclastic sediment. The algal flats, slope and debris apron, and deep basin facies are dominated by endogenic and authigenic sediments derived mainly by physicochemical and biologically mediated carbonate and evaporite mineral precipitation. As one of very few deep water lakes in the world in which soluble evaporite minerals are forming and being preserved, Freefight Lake occupies an important position within the realm of lacustrine sedimentology. Although many of the sedimentological and geochemical processes taking place in the basin today are unusual, the delineation and evaluation of these processes is essential in order to decipher properly the stratigraphic records of Quaternary lake sediments in this large area of North America, as well as lacustrine sequences from other arid and semi-arid regions of the world.
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  • 6
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Sedimentology 37 (1990), S. 0 
    ISSN: 1365-3091
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences
    Notes: The Basin Lakes are two adjacent maar lakes located in the centre of the Western Volcanic Plains District of Victoria, Australia. Both lakes are saline and alkaline; West Basin Lake is meromictic whereas East Basin is a warm monomictic lake. The carbonate mineral suite of the modern offshore bottom sediments of these Basins consists mainly of dolomite and calcite, with smaller amounts of hydromagnesite and magnesite in West Basin and monohydrocalcite in East Basin. The dolomite, hydromagnesite, magnesite, and monohydrocalcite are endogenic in origin, being derived by primary inorganic precipitation within the water columns of the lakes or at the sediment-water interface. The calcite is biologically precipitated as ostracod valves.In addition to the carbonates in the modern offshore (deep-water) sediments, the lakes also contain a girdle of nearshore carbonate hardgrounds. Both beachrock and microbialites (algal boundstones) are present. These modern lithified carbonate units exhibit a wide range of depositional and diagenetic fabrics, morphologies and compositions. In West Basin, the hardgrounds are composed mainly of dolomite, hydromagnesite, and magnesite, whereas dolomite and monohydrocalcite dominate the East Basin sediments. Aragonite, high-Mg calcite, kutnahorite, siderite, and protohydromagnesite also occur in these lithified carbonate units.Stratigraphic variations in the carbonate mineralogy of the Holocene sediment record in the lakes were used to help decipher the palaeochemistry and palaeohydrology of the Basins. These changes, in conjunction with fluctuations in organic remains and fossil content, indicate a pattern of lake level histories similar to that deciphered from other maar lakes in western Victoria.
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Journal of paleolimnology 11 (1994), S. 1-2 
    ISSN: 1573-0417
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Geosciences
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Journal of paleolimnology 13 (1995), S. 1-2 
    ISSN: 1573-0417
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Geosciences
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  • 9
    ISSN: 1573-0417
    Keywords: West Basin ; crater lake ; salinity ; diatoms ; ostracods ; pollen ; carbonate geochemistry ; Cyclotella caspia ; dissolution ; Australia
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Geosciences
    Notes: Abstract Analyses of diatoms, ostracods, pollen and sediment mineralogy from a 524 cm core from a stratified, hypersaline crater lake, West Basin, Victoria, has revealed clear shifts in the lake's water balance and chemistry and the region's climate over the last 10 000 years. Diatom and ostracod analyses reveal lake water salinity changes which are consistent with the conditions suitable for the precipitation of the carbonate and other minerals identified using x-ray diffraction analysis. The fluctuations in lake water balance deduced from diatom and ostracod inferred lake salinity suggest that the lake began to fill at the beginning of the Holocene and was saline and shallow. Toward the mid-Holocene the water levels rose and yet the lake remained largely saline. The late Holocene is marked by a return to more shallow but fluctuating, water conditions. Through the whole period, the regional dryland vegetation was dominated by open sclerophyll woodland. Both the lacustrine and regional environments interpreted here are consistent with those from Holocene records elsewhere in the region.
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Journal of paleolimnology 12 (1994), S. 269-282 
    ISSN: 1573-0417
    Keywords: Great Plains ; western Canada ; magnesian calcite ; Holocene ; paleolimnology ; stable isotopes
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Geosciences
    Notes: Abstract Lake Manitoba, the largest lake in the Prairie region of North America, contains a fine-grained sequence of late Pleistocene and Holocene sediment that documents a complex postglacial history. This record indicates that differential isostatic rebound and changing climate have interacted with varying drainage basin size and hydrologic budget to create significant variations in lake level and limnological conditions. During the initial depositional period in the basin, the Lake Agassiz phase (∼12–9 ka), δ18O of ostracodes ranged from −16‰ to −5‰ (PDB), implying the lake was variously dominated by cold, dilute glacial meltwater and warm to cold, slightly saline water.Candona subtriangulata, which prefers cold, dilute water, dominates the most negative δ18O intervals, when the basin was part of proglacial Lake Agassiz. At times during this early phase, the δ18O of the lake abruptly shifted to higher values; euryhaline taxa such asC. rawsoni orLimnocythere ceriotuberosa, and halobiont taxa such asL. staplini orL. sappaensis are dominant in these intervals. This positive covariance of isotope and ostracode records implies that the lake level episodically fell, isolating the Lake Manitoba basin from the main glacial lake. δ18O values from inorganic endogenic Mg-calcite in the post-Agassiz phase of Lake Manitoba trend from −4‰ at 8 ka to −11‰ at 4.5 ka. We interpret that this trend indicates a gradually increasing influence of isotopically low (−20‰ SMOW) Paleozoic groundwater inflow, although periods of increased evaporation during this time may account for zones of less negative isotopic values. The δ18O of this inorganic calcite abruptly shifts to higher values (−6‰) after ∼4.5 ka due to the combined effects of increased evaporative enrichment in a closed basin lake and the increased contribution of isotopically high surface water inflow on the hydrologic budget. After ∼2 ka, the δ18O of the Mg-calcite fluctuates between −13‰ and −7‰, implying short-term variability in the lake's hydrologic budget, with values indicating the lake varied from outflow-dominated to evaporation-dominated. The δ13C values of Mg-calcite remain nearly constant from 8 to 4.5 ka and then trend to higher values upward in the section. This pattern suggests primary productivity in the lake was initially constant but gradually increased after 4.5 ka.
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