Torsten Vennemann
YOU?
Author Swipe
View article: Wildfire, ecosystem, and climate interactions in the Early Triassic
Wildfire, ecosystem, and climate interactions in the Early Triassic Open
View article: Late Cretaceous magmatic controls on epithermal-porphyry and volcanogenic massive sulfide systems in the Eastern Pontides, Northeast Türkiye: geochemical and geochronological evidence
Late Cretaceous magmatic controls on epithermal-porphyry and volcanogenic massive sulfide systems in the Eastern Pontides, Northeast Türkiye: geochemical and geochronological evidence Open
The Late Cretaceous magmatic arc of the Eastern Pontides consists of two magmatic cycles. Turonian to Santonian (93.9 to 83.6 Ma) submarine dacitic to rhyolitic rocks host major volcanogenic massive sulfide (VMS) deposits. By contrast, the…
View article: Stable carbon isotope fractionation during the transformation of amorphous CaCO3 at low water–solid ratios: impact of humidity and temperature
Stable carbon isotope fractionation during the transformation of amorphous CaCO3 at low water–solid ratios: impact of humidity and temperature Open
View article: Carbon trapping during contact metamorphism in volcanic basins: example of the Guaymas basin
Carbon trapping during contact metamorphism in volcanic basins: example of the Guaymas basin Open
International audience
View article: Tree-ring based May-June streamflow reconstruction of Zemu River in the Eastern Himalaya
Tree-ring based May-June streamflow reconstruction of Zemu River in the Eastern Himalaya Open
View article: Paleoenvironmental implications of Deccan volcanism relative to the Cretaceous-Paleogene (K-Pg) mass extinction: evidence from the ‘red bole’ record
Paleoenvironmental implications of Deccan volcanism relative to the Cretaceous-Paleogene (K-Pg) mass extinction: evidence from the ‘red bole’ record Open
Large Igneous Provinces (LIPs) have been widely investigated for their potential role in mass extinction events. High-precision U-Pb zircon geochronology of the Deccan Traps indicates that peak eruptive activity began approximately 250 kyr…
View article: Foundational uncertainties in terminal Ediacaran chronostratigraphy revealed by high-precision zircon U-Pb geochronology of the Nama Group, Namibia
Foundational uncertainties in terminal Ediacaran chronostratigraphy revealed by high-precision zircon U-Pb geochronology of the Nama Group, Namibia Open
View article: The early Triassic time scale: New constraints from the Nanpanjiang Basin in South China and a review of geochronological, biostratigraphical and carbon isotope data
The early Triassic time scale: New constraints from the Nanpanjiang Basin in South China and a review of geochronological, biostratigraphical and carbon isotope data Open
View article: Demise of the Barra Honda Carbonate Shoal (Costa Rica) at the Paleocene‐Eocene Boundary Linked to Climate Change and Forearc Tectonics
Demise of the Barra Honda Carbonate Shoal (Costa Rica) at the Paleocene‐Eocene Boundary Linked to Climate Change and Forearc Tectonics Open
The latest Cretaceous(?)–Paleocene Barra Honda Formation represents one of the largest carbonate shoals (>900 km 2 , 350 m thick) of the convergent margin of Costa Rica. Although the mode of formation of the carbonate shoal is well underst…
View article: Conodont diversity, biostratigraphy, and environmental dynamics: Unravelling the Smithian-Spathian transition at Guryul Ravine, Kashmir
Conodont diversity, biostratigraphy, and environmental dynamics: Unravelling the Smithian-Spathian transition at Guryul Ravine, Kashmir Open
The late Smithian and Smithian-Spathian boundary (SSB) witnessed significant conodont extinction approximately 2.7 million years after the major Permian-Triassic boundary extinction. This study offers a detailed examination of the Smithian…
View article: Elevation-dependent breakpoint in climate forcing of tree growth in the Turtmann River Basin, Switzerland
Elevation-dependent breakpoint in climate forcing of tree growth in the Turtmann River Basin, Switzerland Open
Tree rings are valuable proxies for reconstructing changes in climate at annual and intra-annual resolutions. In Alpine regions, changes in climate may well lead to switches between tree-growth being temperature-limited and precipitation-l…
View article: Land-ocean connections in organic carbon cycling amid the Early Triassic (Smithian-Spathian) revealed through compound specific isotope analysis
Land-ocean connections in organic carbon cycling amid the Early Triassic (Smithian-Spathian) revealed through compound specific isotope analysis Open
View article: Tree-Ring Based May-June Streamflow Reconstruction of Zemu River in the Eastern Himalaya
Tree-Ring Based May-June Streamflow Reconstruction of Zemu River in the Eastern Himalaya Open
View article: Demise of the Barra Honda carbonate shoal (Costa Rica) at the Paleocene-Eocene boundary linked to climate change and forearc tectonics
Demise of the Barra Honda carbonate shoal (Costa Rica) at the Paleocene-Eocene boundary linked to climate change and forearc tectonics Open
The latest Cretaceous(?)–Paleocene Barra Honda Formation represents one of the largest carbonate shoals (>900 km2, 350 m thick) of the convergent margin of Costa Rica. Although the mode of formation of the carbonate shoal is well unders…
View article: Smithian–Spathian carbonate geochemistry in the northern Thaynes Group influenced by multiple styles of diagenesis
Smithian–Spathian carbonate geochemistry in the northern Thaynes Group influenced by multiple styles of diagenesis Open
The Smithian–Spathian boundary interval is characterised by a positive carbon isotopic excursion in both δ 13 C carb and δ 13 C org , concurrent with a major marine ecosystem reorganisation and the resurgence of microbialite facies. While …
View article: Reaction-controlled triple O-isotope exchange trajectories during experimental alteration of olivine
Reaction-controlled triple O-isotope exchange trajectories during experimental alteration of olivine Open
http://dx.doi.org/10.13039/100008893 University of Iowa
View article: Fossil biocalcite remains open to isotopic exchange with seawater for tens of millions of years
Fossil biocalcite remains open to isotopic exchange with seawater for tens of millions of years Open
View article: Oxygen isotope fractionation during amorphous to crystalline calcium carbonate transformation at varying relative humidity and temperature
Oxygen isotope fractionation during amorphous to crystalline calcium carbonate transformation at varying relative humidity and temperature Open
View article: Climate cooling in the Early Triassic subtropics: Datasets
Climate cooling in the Early Triassic subtropics: Datasets Open
The files contain the Research Data for the article entitled 'Climate cooling in the Early Triassic subtropics'. A table of contents is provided. In summary, the files are: the raw geochemical data (stable oxygen isotope analysis) used in …
View article: A record of magmatic differentiation in plutonic xenoliths from Santorini (Greece)
A record of magmatic differentiation in plutonic xenoliths from Santorini (Greece) Open
Plutonic xenoliths from volcanic arcs provide unique insights into transcrustal magmatic systems in subduction zone settings. At Santorini volcano in the Central Aegean Volcanic Arc (Greece), plutonic xenoliths occur throughout a sequence …
View article: Palaeoenvironmental variability and carbon cycle perturbations during the Smithian-Spathian (Early Triassic) in Central Spitsbergen
Palaeoenvironmental variability and carbon cycle perturbations during the Smithian-Spathian (Early Triassic) in Central Spitsbergen Open
View article: Diagenetic history and porosity evolution of the Middle Permian clastic-carbonate mixed system, Indus Basin, Pakistan: Implications for reservoir development
Diagenetic history and porosity evolution of the Middle Permian clastic-carbonate mixed system, Indus Basin, Pakistan: Implications for reservoir development Open
This study deals with unraveling the diagenesis-induced porosity evolution in a mixed clastic-carbonate sequence of the Middle Permian Indus Basin, Pakistan. Multiple data sets including outcrop, petrography, cathodoluminescence, scanning …
View article: Middle Eocene Climatic Optimum (MECO) and its imprint in the continental Escanilla Formation, Spain
Middle Eocene Climatic Optimum (MECO) and its imprint in the continental Escanilla Formation, Spain Open
The Middle Eocene Climatic Optimum (MECO) is a global warming event mainly recognized in the marine domain and described less in the terrestrial environment. Here we present a comprehensive geochemical record of the MECO from the Escanilla…
View article: Carbon and sulfur trapping during contact metamorphism: Impact on volatile transfers in sedimentary basins with magmatic activity, example of the Guaymas Basin.
Carbon and sulfur trapping during contact metamorphism: Impact on volatile transfers in sedimentary basins with magmatic activity, example of the Guaymas Basin. Open
The opening of sedimentary basins is often accompanied by magmatic activity, and the emplacement of magmatic sills in the sediments. Contact metamorphism at the edges of the sills releases large amounts of volatiles (H2O, CO2, CH4, a…
View article: Tree-ring hydrological research in the Himalaya: State of the art and future directions
Tree-ring hydrological research in the Himalaya: State of the art and future directions Open
Recent developments in tree-ring research offer great potential for reconstructing past climate changes; determining the frequencies of natural hazards; and assessing the availability of freshwater resources over timescales that extend wel…
View article: Olenekian sulfur isotope records: Deciphering global trends, links to marine redox changes and faunal evolution
Olenekian sulfur isotope records: Deciphering global trends, links to marine redox changes and faunal evolution Open
View article: Elevation-Dependent Breakpoints in Climate Forcing of Tree Growth in the Turtmann River Basin, Switzerland
Elevation-Dependent Breakpoints in Climate Forcing of Tree Growth in the Turtmann River Basin, Switzerland Open
View article: Evidence for variable provenance of Mercury anomalies during the Smithian–Spathian (Olenekian)
Evidence for variable provenance of Mercury anomalies during the Smithian–Spathian (Olenekian) Open
Mercury (Hg) enrichment recorded in Smithian to Spathian (Olenekian) marine sedimentary successions has been used to link putative renewed Siberian Traps Large Igneous Province (STLIP) magmatism to climatic and environmental perturbations …
View article: New Insights on <scp>Micro‐Scale</scp> Variations of Geochemical and Oxygen Isotope Compositions in Conodont and Shark Tooth Bioapatite
New Insights on <span>Micro‐Scale</span> Variations of Geochemical and Oxygen Isotope Compositions in Conodont and Shark Tooth Bioapatite Open
To help understand bioapatite microstructures and related chemical variations, their impact on O‐isotope compositions measured and give insights on sample preparation, this study analysed conodonts and shark teeth prepared in different ori…
View article: New Data on the Expression of the Early Eocene Hyperthermals in Northern Bulgaria: Riben Section Revisited
New Data on the Expression of the Early Eocene Hyperthermals in Northern Bulgaria: Riben Section Revisited Open
We present new lithologic, nannofossil biostratigraphic and benthic carbon and oxygen isotope records for a marly-rich, 11 m thick Paleocene-Eocene section, now exposed at an old quarry at Riben Village, northern Bulgaria. The occurrence o…