Saulo Rodrigues-Filho, German Müller

A Holocene Sedimentary Record from Lake Silvana, SE Brazil

Evidence for Paleoclimatic Changes from Mineral, Trace-Metal and Pollen Data

• Broschiertes Buch

Produktbeschreibung

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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Produktdetails

• Lecture Notes in Earth Sciences 88
• Verlag: Springer / Springer Berlin Heidelberg / Springer, Berlin
• Artikelnr. des Verlages: 978-3-540-66205-1
• 1999.
• Seitenzahl: 112
• Erscheinungstermin: 17. September 1999
• Englisch
• Abmessung: 235mm x 155mm x 7mm
• Gewicht: 254g
• ISBN-13: 9783540662051
• ISBN-10: 3540662057
• Artikelnr.: 09247442

Inhaltsangabe

Abstract.- Methods.- Results.- Discussion.- Conclusions.