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A Holocene Sedimentary Record from Lake Silvana, SE Brazil

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

  • Authors
  • Saulo Rodrigues-Filho
  • German Müller

Part of the Lecture Notes in Earth Sciences book series (LNEARTH, volume 88)

Table of contents

  1. Front Matter
  2. Pages 1-3
  3. Pages 5-26
  4. Pages 27-31
  5. Pages 33-61
  6. Pages 63-72
  7. Pages 73-74
  8. Back Matter

About this book

Introduction

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.

Keywords

Brasilien Brazil Erosion Holozan Klima Pollenanalyse Precipitation Seesedimente climate geochemistry holocene lake pollen analysis sediments vegetation

Bibliographic information

  • DOI https://doi.org/10.1007/BFb0048176
  • Copyright Information Springer-Verlag 1999
  • Publisher Name Springer, Berlin, Heidelberg
  • eBook Packages Springer Book Archive
  • Print ISBN 978-3-540-66205-1
  • Online ISBN 978-3-540-48679-4
  • Series Print ISSN 0930-0317
  • Series Online ISSN 1613-2580
  • Buy this book on publisher's site