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Nd isotope composition of marine sediments as a tracer for iceberg provenance i...
Martins, V.; Santos, J. F.; Ribeiro, S.; Rocha, F.; Mackensen, A.; Rey, D.; Rubio, B.; Dias, J. M. A.OMEX core KC 024-19 was studied aiming at to assess the influence of climate changes on the origin and transport of the sediments of the Galician continental slope, in the last 40 thousand years. The sampled sediments are composed mostly of silt and clay, but also include a coarser-grained (sand-sized) fraction, corresponding essentially to foraminifera tests. Another remarkable feature is the occurrence of fou...
Changes in paleotemperature and paleoproductivity over the last 40,000 years: N...
Martins, V.; Dias, J. M. A.; Moreno, J.; Salgueiro, E.; Mackensen, A.; Rubio, B.; Rey, D.; Magalhães, V.; Santos, J. F.; Rocha, F.; Laut, L.This work aims to identify changes in paleoceanographic conditions on the NW Iberian Continental Margin during the last ~40 ka BP. Paleotemperatures expressed as mean annual Sea Surface Temperature (SSTma) and paleoproductivities expressed as Export Productivity (Pexpma) were evaluated using the modern analog technique SIMMAX 28, based on planktonic foraminifera census counts. The study took into account the re...
Nd isotope composition of the terrigenous component of sediments as a tracer fo...
Martins, V.; Santos, J. F.; Ribeiro, S.; Soares, A. S.; Castro, N.; Mackensen, A.; Moreno, J.; Rey, D.; Rubio, B.; Dias, J. M. A.; Rocha, F.The OMEX core KC 024-19 was studied aiming at to assess the influence of climate changes on the origin and transport of the sediments of the Galician continental slope, in the last 40 ka. The results show that sea level variation played a major role in the supply of the terrigenous sediments coming from the nearby continental areas, whose basement has a Variscan age. Additionally, coarse-grained clastic materia...
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