A5069621379- Geology and Paleoclimatology Research
- Isotope Analysis in Ecology
- Paleontology and Stratigraphy of Fossils
- Pleistocene-Era Hominins and Archaeology
- Geological formations and processes
- Karst Systems and Hydrogeology
- Evolution and Paleontology Studies
- Archaeology and ancient environmental studies
- Hydrocarbon exploration and reservoir analysis
- Marine and environmental studies
- Groundwater and Isotope Geochemistry
- Marine Bivalve and Aquaculture Studies
- Geological and Geophysical Studies Worldwide
- Geological and Geochemical Analysis
- Coral and Marine Ecosystems Studies
- Maritime and Coastal Archaeology
- Forensic Anthropology and Bioarchaeology Studies
- Methane Hydrates and Related Phenomena
- Marine and coastal ecosystems
- earthquake and tectonic studies
- Pacific and Southeast Asian Studies
- Geochemistry and Elemental Analysis
- Coastal wetland ecosystem dynamics
- Fish biology, ecology, and behavior
- Marine Biology and Ecology Research
Max Planck Institute for Chemistry
2016-2025
Max Planck Society
2022-2023
Senckenberg Research Institute and Natural History Museum Frankfurt/M
2023
Princeton University
2023
Bjerknes Centre for Climate Research
2023
Vrije Universiteit Amsterdam
2010-2021
University of Applied Sciences Mainz
2021
Institut Polytechnique de Bordeaux
2019
King Fahd University of Petroleum and Minerals
2019
KU Leuven
2019
Incorporation of animal-based foods into early hominin diets has been hypothesized to be a major catalyst many important evolutionary events, including brain expansion. However, direct evidence the onset and evolution animal resource consumption in hominins remains elusive. The nitrogen-15 nitrogen-14 ratio collagen provides trophic information about individuals modern geologically recent ecosystems (<200,000 years ago), but diagenetic loss this organic matter precludes studies greater...
The influence of climate change on hominin evolution is much debated. Two issues hamper our understanding this process: the limited fossil record, and incomplete knowledge about spatial occupation Africa. Here, we analyze presently known distribution pattern explore potential geographic hominins between ∼4.5 ∼2.5 Ma. We focus assessing relevance Coastal Forest Eastern Africa (CFEA) along Indian Ocean as a core area for early evolution. Based biogeographic-phylogeographic data propose coastal...
Abstract In the Amazon basin, intense precipitation recycling across forest significantly modifies isotopic composition of rainfall (δ 18 O, δD). tropical hydrologic cycle, such an effect can be identified through deuterium excess (dxs), yet it remains unclear what environmental factors control dxs, increasing uncertainty dxs‐based paleoclimate reconstructions. Here we present a 4‐year record rainfall, monitored in northwestern basin. We analyze variations as function air mass history, based...
Online oxygen (δ18 O) and hydrogen (δ2 H) isotope analysis of fluid inclusion water entrapped in minerals is widely applied paleo-fluid studies. In the state art research, however, there a scarcity reported inter-technique comparisons to account for possible analytical offsets. Along with improving precisions sample size limitations, interlaboratory can lead more robust application records.Mineral samples-including speleothem, travertine, vein material-were analyzed on two newly setup...
Human activities within the context of a drying trend triggered megafaunal extinctions in Madagascar and Mascarene Islands.
Abstract During glacial terminations, massive iceberg discharges and meltwater pulses in the North Atlantic triggered a shutdown of Meridional Overturning Circulation (AMOC). Speleothem calcium carbonate oxygen isotope records (δ 18 O Cc ) indicate that collapse AMOC caused dramatic changes distribution variability East Asian Indian monsoon rainfall. However, mechanisms linking intensity δ are not fully understood. Part challenge arises from fact speleothem depends on only precipitation but...
Abstract A method for the isotope analysis of fluid inclusion water in speleothem calcite is presented. The technique based on a commercially available continuous‐flow pyrolysis furnace (ThermoFinnigan TC‐EA). main adaptation made to standard TC‐EA configuration addition crusher and cold trap unit, which connected carrier gas inlet at top reactor tube. series tests conducted with this device shows that: (1) waters, injected crusher, passed through cryogenic trapping routine, yield accurate δ...
Abstract Pervasive fracture networks are common in many reservoir‐scale carbonate bodies even the absence of large deformation and exert a major impact on their mechanical flow behaviour. The Upper Cretaceous Jandaíra Formation is few hundred meters thick succession shallow water carbonates deposited during early post‐rift stage Potiguar rift ( NE Brazil). present onshore domain experienced <1.5 km thermal subsidence and, following Tertiary exhumation, forms outcrops over an area >1000...
Abstract Geochemical analyses of carbonate minerals yield multiple parameters which can be used to estimate the temperature and water composition at they formed. Analysis fluid trapped in is a potentially powerful tool reconstruct paleotemperatures as well diagenetic hydrothermal processes, these could represent parent fluid. Internal fluids play important roles during alteration fossils, lowering energetic barriers associated with resetting clumped isotopes, mediating transport elements...