UID:
almahu_9948601166702882
Format:
XII, 98 p. 51 illus.
,
online resource.
Edition:
1st ed. 1999.
ISBN:
9783540486794
Series Statement:
Lecture Notes in Earth Sciences, 88
Content:
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.
Note:
Abstract -- Methods -- Results -- Discussion -- Conclusions.
In:
Springer Nature eBook
Additional Edition:
Printed edition: ISBN 9783540662051
Additional Edition:
Printed edition: ISBN 9783662174111
Language:
English
URL:
https://doi.org/10.1007/BFb0048176
