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|a 9783540486794
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|a Rodrigues-Filho, Saulo
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|a A Holocene Sedimentary Record from Lake Silvana, SE Brazil
|h Elektronische Ressource
|b Evidence for Paleoclimatic Changes from Mineral, Trace-Metal and Pollen Data
|c by Saulo Rodrigues-Filho, German Müller
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|a 1st ed. 1999
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|a Berlin, Heidelberg
|b Springer Berlin Heidelberg
|c 1999, 1999
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|a XII, 98 p. 51 illus
|b online resource
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|a Abstract -- Methods -- Results -- Discussion -- Conclusions
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|a Geology
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|a Atmospheric Sciences
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|a Hydrogeology
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|a Hydrogeology
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|a Atmospheric sciences
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|a Geology
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|a Oceanography
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|a Oceanography
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|a Müller, German
|e [author]
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|a eng
|2 ISO 639-2
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|b SBA
|a Springer Book Archives -2004
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|a Lecture Notes in Earth Sciences
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|u https://doi.org/10.1007/BFb0048176?nosfx=y
|x Verlag
|3 Volltext
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|a 551
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|a Mineralogical-sedimentological and geochemical investigations in combination with pollen data of a 12.7-m-long dated sediment core from Lake Silvana, SE Brazil, permit the reconstruction of the climatic history over the past 10,000 years. The lowermost section (I) reflects a coarse paleosol-type sediment with abundant plant debris and rootlets; pollen indicates grassland vegetation. Section II represents fine-grained lake sediments; pollen indicates a savanna-like vegetation. Section III represents a pollen-free, coarse-grained allogenic sediment deposited under high transportation energy (increased precipitation). Section IV, a greenish sequence with increasing C content towards the top, has a pollen spectrum of present-day vegetation (semideciduous forest). The different sediment sections show a connection with erosional phases in the catchment of the lake, based on mineralogy and geochemistry, which are a response to climate development
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