Browsing Geology by Author "Ruhl, Micha"
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Chemostratigraphy Across the Triassic–Jurassic Boundary
Ruhl, Micha (John Wiley & Sons, Inc, 2019)The Triassic‐Jurassic transition (~201.5 Ma) is marked by one of the largest mass extinctions in Earth’s history. This was accompanied by significant perturbations in ocean and atmosphere geochemistry, ... -
Does Large Igneous Province Volcanism Always Perturb the Mercury Cycle? Comparing the Records of Oceanic Anoxic Event 2 and the End-cretaceous to Other Mesozoic Events
Ruhl, Micha; Percival, Lawrence M.E.; Jenkyns, Hugh C.; Mather, Tamsin A.; Dickson, Alexander J.; Batenburg, Sietske J.; Hesselbo, Stephen P.; Barclay, Richard; Jarvis, Ian; Robinson, Stuart A.; Woelders, Lineke (2018)Mercury (Hg) is increasingly being used as a sedimentary tracer of Large Igneous Province (LIP) volcanism, and supports hypotheses of a coincidence between the formation of several LIPs and episodes of mass extinction and ... -
An Early Jurassic (Sinemurian Toarcian) stratigraphic framework for the occurrence of Organic Matter Preservation Intervals (OMPIs)
Ruhl, Micha (2021)Lower Jurassic sedimentary successions in the Atlantic margin basins include several organic-rich intervals, some with source rock potential; time-equivalent units are also identified in on- and offshore areas worldwide. ... -
The Jurassic Period
Ruhl, Micha (Elsevier, 2020)Ammonites underwent an evolutionary diversification after the mass extinction of the end Triassic induced by the formation of a Large Igneous province (LIP), and this group provides the most useful marine biostratigraphy. ... -
New Constraints on Global Geochemical Cycling During Oceanic Anoxic Event 2 (Late Cretaceous) From a 6-Million-year Long Molybdenum-Isotope Record
Ruhl, Micha (2021)Intervals of extreme warmth are predicted to drive a decrease in the oxygen content of the oceans. This prediction has been tested for the acme of short (<1 million years) episodes of significant marine anoxia in the ...