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Links between bacterial communities in marine sediments and trace metal geochemistry as measured by in situ DET/DGT approaches Vrije Universiteit Brussel Universiteit Gent
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Organic geochemistry of submarine canyons: the Portuguese Margin Universiteit Gent
Stratigraphy, palaeontology and geochemistry of the late Neoproterozoic Aar Member, southwest Namibia: Reflecting environmental controls on Ediacara fossil preservation during the terminal Proterozoic in African Gondwana Vrije Universiteit Brussel
Common, Ediacaran fossils are well preserved in a Late Neoproterozoic (ca. 545 Ma) shallow marine sequence, described here as the Aar Member of the Dabis Formation (Kuibis Subgroup, Nama Group), near Aus in southwest Namibia. This 31–38 m thick, shale-dominant unit records the transition from fluvial-shallow marine Kliphoek Sandstone to open marine limestone of the Mooifontein Member of the Zaris Formation, deposited on a subsiding continental ...
Migration of diadromous and landlocked smelt populations studied by otolith geochemistry Vrije Universiteit Brussel KU Leuven
Laser ablation inductively coupled mass spectrometry (LA-ICPMS) was used to determine Sr and Ba profiles along the growth axis of otholiths of European smelt caught in the Wadden Sea, the IJsselmeer and the Markermeer and to investigate the migration behaviour of the fish between the freshwater lakes and the marine environment. The use of Sr and Ba otolith profiles and their dissolved concentrations in the 3 aquatic systems provided a robust ...
Sediment provenance in the Baker-Martínez fjord system (Chile, 48°s) indicated by magnetic susceptibility and inorganic geochemistry Universiteit Gent
Fjord sediments are increasingly used as high-resolution archives of climate and environmental change, including variations in glacier mass balance and terrestrial hydrology. To accurately interpret such sediment records, it is crucial to comprehend sediment transport processes and determine sediment provenance. With this in mind, our main objective is to identify cost-effective parameters that can be used to reconstruct relative variations in ...
Last Glacial central Mediterranean hydrology inferred from Lake Trasimeno’s (Italy) calcium carbonate geochemistry Vrije Universiteit Brussel
There is still a paucity of hydrological data explaining the relationship between (rapid, millennial-scale) climate forcing and Mediterranean rainfall since the Last Glacial. We show that distinct lake-level fluctuations at Lake Trasimeno (Italy) are associated with changing aridity in the central Mediterranean during the last ˜47 800 years. The lake-level fluctuations are reconstructed based on carbonate mineral content and carbonate mineral ...
CAUGHT IN AMBER: GEOCHEMISTRY AND PETROGRAPHY OF UNIQUELY PRESERVED CHICXULUB MICROTEKTITES FROM THE TANIS K-PG SITE FROM NORTH-DAKOTA (USA) Vrije Universiteit Brussel
Introduction: The Chicxulub meteorite impact is
the only recognized impact event on Earth that produced
and preserved an ejecta layer still traceable today on a
global scale [1]. Therefore, it is possible to directly compare,
both texturally and compositionally, the material
from the crater in Mexico with its deposits worldwide.
This approach provides vital constraints on the dynamic
processes ...
the only recognized impact event on Earth that produced
and preserved an ejecta layer still traceable today on a
global scale [1]. Therefore, it is possible to directly compare,
both texturally and compositionally, the material
from the crater in Mexico with its deposits worldwide.
This approach provides vital constraints on the dynamic
processes ...
Origin of the saline paleofluids in fault-damage zones of the Jabal Qusaybah Anticline (Adam Foothills, Oman): Constraints from fluid inclusions geochemistry KU Leuven
© 2017 Elsevier Ltd The Jabal Qusaybah Anticline, in north Oman, is affected by syn-folding strike-slip and extensional fault zones developed during foreland deformation ahead of the Northern Oman Mountains thrust wedge, in Cenozoic times. Migration of fluids in fault-damage zones is recorded in complex calcite vein networks. By employing the microthermometric and compositional microanalysis of the fluid inclusions (crush-leach), two distinct ...
Chemical environment of cold seep carbonate formation on the northern continental slope of South China Sea: Evidence from trace and rare earth element geochemistry KU Leuven
Trace element and rare earth element (REE) concentrations in cold seep carbonates from the northern continental slope of the South China Sea are used in this study to indicate source fluid characteristics and redox conditions. Carbonate samples from the two study areas (Shenhu and Dongsha) all show low total REE concentrations (mostly 10–20 ppm). In the Shenhu area, the shale-normalized REE patterns of the chimney carbonates display slight light ...