A5058741948- Paleontology and Stratigraphy of Fossils
- Geology and Paleoclimatology Research
- Calcium Carbonate Crystallization and Inhibition
- Marine Bivalve and Aquaculture Studies
- Marine Biology and Ecology Research
- Methane Hydrates and Related Phenomena
- Hydrocarbon exploration and reservoir analysis
- Marine and environmental studies
- Geological and Geochemical Analysis
- Geochemistry and Elemental Analysis
- Ocean Acidification Effects and Responses
- Groundwater and Isotope Geochemistry
- Isotope Analysis in Ecology
- Coral and Marine Ecosystems Studies
- Smart Materials for Construction
- Radioactivity and Radon Measurements
- Karst Systems and Hydrogeology
- Radioactive element chemistry and processing
- Geological formations and processes
- Geological and Tectonic Studies in Latin America
- Marine Biology and Environmental Chemistry
Linnaeus University
2023-2024
TU Bergakademie Freiberg
2020
University of Münster
2015-2020
University of Kentucky
2018
Abstract The earliest diagenetic post‐mortem exposure of biogenic carbonates at the sea floor and in uppermost sediment column results colonization hard‐part surfaces by bacterial communities. Some metabolic redox processes related to these communities have potential alter carbonate shell properties, hence affect pathways with significant consequences for archive data. During a three‐month vitro study, subsamples ocean quahog Arctica islandica (Linnaeus, 1767) were incubated natural anoxic...
The stable isotope compositions of sulphur (δ
Abstract Whereas changes in pore water chemistry are known to impact carbonate sediment geochemistry, little is about the of long unconformities on alteration. IODP Site 378‐U1553 southern Campbell Plateau, with a 26‐million‐year, erosional unconformity, provides key location for examining long‐term sub‐surface and archives. This study examined 76 interstitial samples sulfate sulfur oxygen isotopes, as well 28 bulk associated (CAS) quantify effects this unconformity redox Site. The current...
Abstract Carbonates that exhibit obvious diagenetic alteration are usually excluded as archives in palaeoenvironmental studies. However, the potential impact of microbial during early diagenesis is still poorly explored. To investigate sensitivity sulphur concentration, distribution, oxidation state and isotopic composition marine aragonite to alteration, Arctica islandica bivalves Porites sp. corals were experimentally exposed anaerobic activity. The anoxic incubation media included a...
Over the few past decades, concept of microbial sulfur cycling catalyzing precipitation CaMg (CO3)2 at low temperatures (<40 °C) has been studied intensely. In this respect, two hypersaline lagoons, Lagoa Vermelha and Brejo do Espinho, in Brazil, have subject numerous studies investigating sedimentary Ca/Mg carbonate formation. Here, we present oxygen isotopic compositions dissolved sulfate from surface water, as well sulfide pore-water (δ34SSO4, δ18OSO4, δ34SH2S), composition pyrite...
Lagoa Vermelha, a coastal lagoon in Brazil, is well-known among carbonate geologists as the birthplace of microbial dolomite model [1,2]. This attributes precipitation to direct mediation by sulfate-reducing bacteria that removes sulfate ions from fluids, thus removing known kinetic inhibitor formation [2]. The based large part on results low-temperature laboratory experiments using cultures which claim have produced ordered validity dolomitization has been challenged recently basis...