A holocene sedimentary record from Lake Silvana, SE Brazil : evidence for paleoclimatic changes from mineral, trace-metal and pollen data
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 sed...
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| Hauptverfasser: | , |
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| Format: | Livre numérique |
| Sprache: | Anglais |
| Veröffentlicht: |
Berlin [etc.] :
Springer
[20..].
Cham : Springer Nature |
| Schriftenreihe: | Lecture notes in Earth sciences
88 |
| Schlagworte: | |
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Archives Springer e-books (Licence nationale) Archives Springer e-books (Licence nationale) |
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| Edition sous un autre format: | • A Holocene sedimentary record from Lake Silvana, SE Brazil, evidence for paleoclimatic changes from mineral, trace-metal, and pollen data, Saulo Rodrigues-Filho, German Müller, New York, Springer, 1999, 1 vol. (95 p.), Lecture notes in earth sciences, 978-3-540-66205-1 • A Holocene Sedimentary Record from Lake Silvana, SE Brazil, Texte imprimé, 9783662174111 |
| Zusammenfassung: | 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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| Beschreibung: | Archives Springer e-books (Licence nationale) Archives Springer e-books (Licence nationale) |
| ISBN: | 9783540486794 (PDF) |
| ISSN: | 1613-2580 |
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