Search Results - "Percival, Lawrence M. E"
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Mercury evidence for pulsed volcanism during the end-Triassic mass extinction
Published in Proceedings of the National Academy of Sciences - PNAS (25-07-2017)“…The Central Atlantic Magmatic Province (CAMP) has long been proposed as having a causal relationship with the end-Triassic extinction event (∼201.5 Ma). In…”
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Mercury anomalies across the Palaeocene–Eocene Thermal Maximum
Published in Climate of the past (06-02-2019)“…Large-scale magmatic events like the emplacement of the North Atlantic Igneous Province (NAIP) are often coincident with periods of extreme climate change such…”
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Astronomically paced climate and carbon cycle feedbacks in the lead-up to the Late Devonian Kellwasser Crisis
Published in Climate of the past (28-02-2024)“…Repeated carbon isotope excursions and widespread organic-rich shale deposition mark the Middle and Upper Devonian series. Various explanations such as…”
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Grouping behavior in a Triassic marine apex predator
Published in Current biology (19-12-2022)“…Marine tetrapods occupy important roles in modern marine ecosystems and often gather in large aggregations driven by patchy prey distribution,1,2 social or…”
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Assessing the Contributions of Comet Impact and Volcanism Toward the Climate Perturbations of the Paleocene‐Eocene Thermal Maximum
Published in Geophysical research letters (28-12-2019)“…The Paleocene‐Eocene Thermal Maximum is marked by a prominent negative carbon‐isotope excursion, reflecting the injection of thousands of gigatons of…”
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Evolution of the Toarcian (Early Jurassic) carbon-cycle and global climatic controls on local sedimentary processes (Cardigan Bay Basin, UK)
Published in Earth and planetary science letters (15-02-2018)“…The late Early Jurassic Toarcian Stage represents the warmest interval of the Jurassic Period, with an abrupt rise in global temperatures of up to ∼7 °C in…”
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Upper Devonian mercury record from North America and its implications for the Frasnian–Famennian mass extinction
Published in Palaeogeography, palaeoclimatology, palaeoecology (15-08-2021)“…The Frasnian–Famennian biotic crisis (~372 Ma) was one of the “big five” mass extinction events in the Phanerozoic. This event was associated with dramatic…”
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Release of mercury during contact metamorphism of shale: Implications for understanding the impacts of large igneous province volcanism
Published in Earth and planetary science letters (01-10-2023)“…Elevated mercury (Hg) in sedimentary strata are a widely used tracer for assessing the relationship between large igneous province (LIP) activity and global…”
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Pulses of enhanced continental weathering associated with multiple Late Devonian climate perturbations: Evidence from osmium-isotope compositions
Published in Palaeogeography, palaeoclimatology, palaeoecology (15-06-2019)“…Anomalously high rates of continental weathering have frequently been proposed as a key stimulus for the development of widespread marine anoxia during a…”
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Volcanism and carbon cycle perturbations in the High Arctic during the Late Jurassic – Early Cretaceous
Published in Palaeogeography, palaeoclimatology, palaeoecology (01-03-2023)“…Large perturbations in the global carbon cycle recorded as carbon-isotope (δ13C) excursions (CIEs) in both organic carbon and carbonate records have been…”
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Pre-Cenozoic cyclostratigraphy and palaeoclimate responses to astronomical forcing
Published in Nature reviews. Earth & environment (01-01-2024)Get full text
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Geochemical records of the end-Triassic Crisis preserved in a deep marine section of the Budva Basin, Dinarides, Montenegro
Published in Palaeogeography, palaeoclimatology, palaeoecology (15-11-2022)“…The end-Triassic extinction event (∼ 201.5 Ma) is one of the five major mass extinction events in Earth's history, however, considerable discussion continues…”
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Phosphorus-cycle disturbances during the Late Devonian anoxic events
Published in Global and planetary change (01-01-2020)“…The Late Devonian was marked by repeated faunal crises and episodes of geographically widespread marine anoxia, and featured one of the ‘Big Five’ mass…”
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Combined Nitrogen‐Isotope and Cyclostratigraphy Evidence for Temporal and Spatial Variability in Frasnian–Famennian Environmental Change
Published in Geochemistry, geophysics, geosystems : G3 (01-05-2022)“…Widespread marine anoxia triggered by the runoff and recycling of nutrients was a key phenomenon associated with the Frasnian–Famennian (FF) mass extinction…”
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