The late Quaternary paleoenvironment of Chile as seen from marine archives

Author(s): Stuut, Jan-Berend W.; Marchant, Margarita; Kaiser, Jérôme; Lamy, Frank; Mohtadi, Mahyar; Romero, Oscar; Hebbeln, Dierk
Author Affiliation(s): Primary:
University of Bremen, Research Center Ocean Margins, Bremen, Federal Republic of Germany
Universidad de Concepción, Chile
GeoForschungsZentrum Potsdam, Federal Republic of Germany
Volume Title: Paläo-Geoökologie der Zentralen Anden
Volume Author(s): Veit, Heinz, prefacer
Source: Paläo-Geoökologie der Zentralen Anden [Paleo-geoecology of the Central Andes], prefaced by Heinz Veit. Geographica Helvetica, 61(2), p.135-151. Publisher: Fotorotar, Egg, Switzerland. ISSN: 0016-7312 CODEN: GGHVA4
Note: In English with German and French summaries. 84 refs.; illus., incl. sketch map
Summary: Many variables have been used to reconstruct Chilean paleoenvironmental changes during the late Quaternary. In this paper we present an overview of a number of these variables, so-called proxies, that have been inferred from marine sediments from the Chilean continental margin and summarise the results. In general, a glacial-interglacial pattern of climate changes can be recognised in the proxy records with high-frequency variabilities superposed. The synthesis shows that the records in the Southeast Pacific are clearly dominated by a high-latitude climate forcing mechanism and that there is a noticeable gradual increase of tropical forcing moving from south to north along the South American continental margin.
Year of Publication: 2006
Research Program: ODP Ocean Drilling Program
Key Words: 24 Surficial Geology, Quaternary Geology; Algae; Carbonate sediments; Cenozoic; Chemical ratios; Chile; Chlorite; Chlorite group; Clay minerals; Coccolithophoraceae; Continental margin; Cores; Crystallinity; Diatoms; East Pacific; Foraminifera; Grain size; Illite; Invertebrata; Leg 138; Leg 202; Marine sediments; Microfossils; ODP Site 1233; ODP Site 846; Ocean Drilling Program; Pacific Ocean; Paleo-oceanography; Paleoclimatology; Paleoecology; Paleoenvironment; Paleotemperature; Plantae; Productivity; Protista; Quaternary; Reconstruction; Sea-surface temperature; Sediments; Sheet silicates; Silicates; Size distribution; South America; South Pacific; Southeast Pacific; Terrigenous materials; Upper Quaternary
Coordinates: S410000 S410000 W0742700 W0742700
S030549 S030541 W0904904 W0904906
Record ID: 2007026026
Copyright Information: GeoRef, Copyright 2019 American Geosciences Institute.