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Lamy, Frank; Hebbeln, Dierk; Wefer, Gerold (1998): Sedimentology and mineralogy of surface sediments from the Chilean continental margin. PANGAEA, https://doi.org/10.1594/PANGAEA.711825, Supplement to: Lamy, F et al. (1998): Terrigenous sediment supply along the Chilean continental margin: modern regional patterns of texture and composition. Geologische Rundschau, 87(3), 477-494, https://doi.org/10.1007/s005310050223

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Abstract:
The regional patterns of texture and composition of modern continental slope and pelagic sediments off Chile between 25°S and 43°S reflect the latitudinal segmentation of geological, morphological, and climatic features of the continental hinterland. Grain-size characteristics are controlled by the grain-size of source rocks, the weathering regime, and mode of sediment input (eolian off northern Chile vs fluvial further south). Bulk-mineral assemblages reveal a low grade of maturity. Regional variations are governed by the source-rock composition of the different geological terranes and the relative source-rock contribution of the Coastal Range and Andes, as controlled by the continental hydrology. The relative abundance of clay minerals is also predominantly influenced by the source-rock composition and partly by continental smectite neoformation. Latitudinal variations of illite crystallinities along the Chilean continental slope (and west of the Peru-Chile trench) clearly reflect modifications of the weathering regime which correspond to the strong climatic zonation of Chile.
Related to:
Lamy, Frank (1998): Spätquartäre Variationen des terrigenen Sedimenteintrags entlang des chilenischen Kontinentalhangs als Abbild von Klimavariabilität im Milankovic- und Sub-Milankovic-Zeitbereich. Berichte aus dem Fachbereich Geowissenschaften der Universität Bremen, 120, 141 pp, urn:nbn:de:gbv:46-ep000102397
Coverage:
Median Latitude: -34.974729 * Median Longitude: -76.000433 * South-bound Latitude: -43.240000 * West-bound Longitude: -81.000000 * North-bound Latitude: -25.220000 * East-bound Longitude: -71.171667
Date/Time Start: 1994-03-11T00:00:00 * Date/Time End: 1995-06-12T00:00:00
Event(s):
GeoB3301-2 (SO101/3_1-2) * Latitude: -33.146667 * Longitude: -71.981667 * Date/Time: 1995-04-25T00:00:00 * Elevation: -970.0 m * Recovery: 0.27 m * Location: South-East Pacific * Campaign: SO101 (CONDOR-Ia) * Basis: Sonne * Method/Device: MultiCorer (MUC) * Comment: core recovery 8/8, 2/4
GeoB3302-2 (SO101/3_2-2) * Latitude: -33.218333 * Longitude: -72.086667 * Date/Time: 1995-04-26T00:00:00 * Elevation: -1502.0 m * Recovery: 0.24 m * Location: South-East Pacific * Campaign: SO101 (CONDOR-Ia) * Basis: Sonne * Method/Device: MultiCorer (MUC) * Comment: core recovery 7/8, 2/4
GeoB3303-1 (SO101/3_3-1) * Latitude: -33.206667 * Longitude: -72.175000 * Date/Time: 1995-04-26T00:00:00 * Elevation: -1983.0 m * Recovery: 0.27 m * Location: South-East Pacific * Campaign: SO101 (CONDOR-Ia) * Basis: Sonne * Method/Device: MultiCorer (MUC) * Comment: core recovery 8/8, 4/4
Size:
3 datasets

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