Global ETD Search
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Showing 1 to 15 of 15 for “"PETM"”.
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A magmatic trigger for the Paleocene-Eocene Thermal Maximum?
… system. This Paleocene-Eocene Thermal Maximum (PETM) is often cited as an analogue of anthropogenic climate change. Many trigger mechanisms for the carbon release at the PETM have been proposed. Common to all scenarios is rapid release of isotopically light carbon (<13C/12C values) from methane …
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A magmatic trigger for the Paleocene-Eocene thermal maximum?
… system. This Paleocene-Eocene Thermal Maximum (PETM) is often cited as an analogue of anthropogenic climate change. Many trigger mechanisms for the carbon release at the PETM have been proposed. Common to all scenarios is rapid release of isotopically light carbon (<¹³C/¹²C values) from methane …
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Differential Thermal Isotope Analysis: A Method for the Study of Past Climates
… during the Paleocene-Eocene Thermal Maximum (PETM). Measurements of gypsum and clay samples demonstrate the ability of DTIA to separate out different dehydration steps for individual measurement, both for minerals with multiple water environments, and for minerals with multiple-step …
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A multi-proxy study of the Palaeocene - Eocene Thermal Maximum in northern Spain
… termed the Paleocene-Eocene Thermal Maximum (PETM), occurred. Records of this event are characterised by a negative carbon isotope excursion (CIE) which has been associated with the release of thousands of petagrams of isotopically light carbon into the ocean-atmosphere system, initiating …
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Carbon Cycle Trends Recorded By Organic Carbon Stable Isotopes In Paleocene Strata, Benton County, Mississippi: Implications For Chronostratigraphy Of The Porters Creek And Naheola Formations
The paleocene-eocene thermal maximum (petm) is one of the most studied carbon isotope excursions in earth's history. The petm occurred 55 million years ago when excess isotopically heavy carbon (c13) was added into earth's carbon cycle, resulting in ecological and environmental changes. The petm is …
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High-latitude sedimentation in response to climate variability during the Cenozoic
… with the Paleocene-Eocene Thermal Maximum (PETM; ca. 56 Ma), a global warming event during which thousands of Gt C was released into the ocean-atmosphere on Kyr timescales. IODP Site U1568, strategically located near the hydrothermal vent complex and part of a broader drilling transect in …
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Responses of a shallow-water ecosystem to the early Paleogene greenhouse environmental conditions : evolution of Larger Foraminifera and coral communities from the Northern Tethys
… events is the Paleocene-Eocene Thermal Maximum (PETM, ~55 Ma) when the magnitude of carbon addition to the oceans and atmosphere was similar to those expected for the future. This event initiated global warming, changes in hydrological cycles, biotic extinction and migrations. A recently proposed …
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Changes in morphological disparity in eutherian mammals across the K-Pg boundary and Palaeocene-Eocene Thermal Maximum using discrete morphofunctional characters
… is the Palaeocene-Eocene Thermal Maximum (PETM), a period of particularly high global temperatures ~55 million years ago, which coincided with major faunal turnover. However, the extent to which the PETM affected eutherian disparity, and how this compares to the changes seen across the K-Pg …
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Palaeoclimatology of the late Palaeocene to middle Eocene: geochemical records of stable and transient climate states
… state. The Palaeocene { Eocene Thermal Maximum (PETM) represents a significant input of exogenic carbon into the atmosphere over the course of several thousand years and significant warming of the Earth. Records of bulk carbonate isotopes from a section in NE Italy show several other Delta13C …
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Stratigraphy and Palaeoenvironment of the Paleocene/Eocene boundary interval in the Indus Basin, Pakistan
… in the Patala Formation is associated with the PETM (Paleocene Eocene Thermal Maximum) global climatic event and allows the recognition of the P/E boundary in shallow water carbonates of the Indus Basin. This turnover is already reported from other Tethyan sections and from the Salt Range (Upper …
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Paleogene-Early Neogene palynomorphs from the Eastern Equatorial Atlantic and Southeastern Florida, USA: Biostratigraphy and paleoenvironmental implications
… conditions (Paleocene-Eocene Thermal Maximum, PETM) to icehouse conditions (Early Oligocene) is not well documented in tropical-subtropical regions. One hundred and five samples from Ocean Drilling Program (ODP) Site 959 (Hole 959A and Hole 959D) in the Cote d'Ivoire-Ghana Transform Margin, …
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Developing iodine proxies for oceanic oxygenation conditions during greenhouse episodes
… event, the Paleocene-Eocene Thermal Maximum (PETM, ~55.5 Ma), may represent a better analog for present and future global warming. I apply the iodine to calcium ratio (I/Ca) in bulk coarse fraction sediment and planktonic foraminiferal tests from pelagic sites in different oceans, and compared …
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Marine carbonate accumulation during the greenhouse climate of the Eocene
… system, e.g. Paleocene Eocene Thermal Maximum (PETM), ca. 56 Ma, which were preserved as negative carbon isotope excursions (CIEs) in the sedimentary record. The hothouse climate of early Eocene transitioned to a relatively cooler and less explored ‘warmhouse’ regime during middle-late Eocene, …
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La limite Paléocène-Eocène dans le Bassin de Douala Biostratigraphie et essai de reconstitution des paléoenvironnements
… celui du Nigeria voisin et celui contemporain du PETM (Paleocene-Eocene Thermal Maximum) dans l’Eocène basal de divers bassins nordiques passés en revue dans le travail. Sur les nonante-quatre espèces de sporomorphes identifiées, une cinquantaine de taxons a été retenue dans un objectif …
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La limite Paléocène-Eocène dans le Bassin de Douala Biostratigraphie et essai de reconstitution des paléoenvironnements
… celui du Nigeria voisin et celui contemporain du PETM (Paleocene-Eocene Thermal Maximum) dans l’Eocène basal de divers bassins nordiques passés en revue dans le travail. Sur les nonante-quatre espèces de sporomorphes identifiées, une cinquantaine de taxons a été retenue dans un objectif …