Search Results - "Polteau, Stéphane"
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Author Correction: Dynamic and history of methane seepage in the SW Barents Sea: new insights from Leirdjupet Fault Complex
Published in Scientific reports (25-03-2024)Get full text
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Rapid magma emplacement in the Karoo Large Igneous Province
Published in Earth and planetary science letters (01-04-2012)“…Understanding the dynamics of continental Large Igneous Provinces (LIPs) relies on precise dating of basaltic rocks. LIP research has traditionally focused on…”
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Local melt contamination and global climate impact: Dating the emplacement of Karoo LIP sills into organic-rich shale
Published in Earth and planetary science letters (01-02-2022)“…•Wallrock contamination formed zircon-bearing pegmatitic pods in Karoo LIP sills.•High-precision U-Pb zircon dates from the Ecca Group are coeval across the…”
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Dynamic and history of methane seepage in the SW Barents Sea: new insights from Leirdjupet Fault Complex
Published in Scientific reports (23-02-2021)“…Methane emissions from Arctic continental margins are increasing due to the negative effect of global warming on ice sheet and permafrost stability, but…”
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The Early Cretaceous Barents Sea Sill Complex: Distribution, 40Ar/39Ar geochronology, and implications for carbon gas formation
Published in Palaeogeography, palaeoclimatology, palaeoecology (01-01-2016)“…Mafic igneous rocks of Cretaceous age (80–130Ma) scattered around the Arctic Ocean are commonly referred to as the High Arctic Large Igneous Province (HALIP)…”
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Regional structure and polyphased Cretaceous-Paleocene rift and basin development of the mid-Norwegian volcanic passive margin
Published in Marine and petroleum geology (01-05-2020)“…The Møre and Vøring basins of the mid-Norwegian volcanic passive margin are characterized by thick accumulations of Cretaceous to Paleocene sedimentary strata…”
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U–Pb systematics in carbonates of the Postmasburg Group, Transvaal Supergroup, South Africa: Primary versus metasomatic controls
Published in Precambrian research (01-07-2013)“…•Carbonate rocks from the Postmasburg Group are strongly metasomatized.•U–Pb data for the Mooidraai carbonates define an upper intercept age of 2392±23Ma.•The…”
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Toward one-meter resolution in 3D seismic
Published in Leading edge (Tulsa, Okla.) (01-11-2018)“…High-resolution 3D (HR3D) seismic data are important for hydrocarbon exploration of shallow reservoirs, site characterization, and geohazard assessments. The…”
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Saucer-shaped intrusions: Occurrences, emplacement and implications
Published in Earth and planetary science letters (01-02-2008)“…Magmatic intrusions and fluidized injected sands represent the two main types of sheet intrusions in the Earth's crust. In this paper we show that both…”
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The thermal maturity of sedimentary basins as revealed by magnetic mineralogy
Published in Basin research (01-12-2020)“…The thermal evolution of sedimentary basins is usually constrained by maturity data, which is interpreted from Rock‐Eval pyrolysis and vitrinite reflectance…”
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Structural and fluid-migration control on hill-hole pair formation: Evidence from high-resolution 3D seismic data from the SW Barents Sea
Published in Geomorphology (Amsterdam, Netherlands) (01-01-2023)“…Hill-hole pairs are subglacial landforms consisting of thrust-block hills and associated source depressions. Formed by evacuation of material where ice sheets…”
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The pre-breakup stratigraphy and petroleum system of the Southern Jan Mayen Ridge revealed by seafloor sampling
Published in Tectonophysics (05-06-2019)“…The Jan Mayen Microplate Complex (JMMC) in the NE Atlantic is interpreted to mostly consist of continental fragments with possible interstitial embryonic…”
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Quantification and Restoration of the Pre‐Drift Extension Across the NE Atlantic Conjugate Margins During the Mid‐Permian‐Early Cenozoic Multi‐Rifting Phases
Published in Tectonics (Washington, D.C.) (01-01-2023)“…The formation of the NE Atlantic conjugate margins is the result of multiple rifting phases spanning from the Late Paleozoic and culminating in the early…”
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Upper Cretaceous-Paleogene stratigraphy and development of the Mímir High, Vøring Transform Margin, Norwegian Sea
Published in Marine and petroleum geology (01-12-2020)“…Transform margins represent strike-slip type of plate boundaries that form during continental breakup and initial ocean opening. They are often characterized…”
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The geology and geochemistry of the Palaeoproterozoic Makganyene diamictite
Published in Precambrian research (10-08-2006)“…The Palaeoproterozoic Earth experienced a global glacial event at ∼2400 Ma that occurred during the transitional period from anoxic to aerobic conditions in…”
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Dynamics of hydrothermal seeps from the Salton Sea geothermal system (California, USA) constrained by temperature monitoring and time series analysis
Published in Journal of Geophysical Research - Solid Earth (01-09-2009)“…Water‐, mud‐, gas‐, and petroleum‐bearing seeps are part of the Salton Sea geothermal system (SSGS) in southern California. Carbon dioxide is the main…”
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Contact metamorphic devolatilization of shales in the Karoo Basin, South Africa, and the effects of multiple sill intrusions
Published in Chemical geology (24-02-2011)“…Quantification of fluid generation during contact metamorphism of shale is important for the understanding of metamorphic processes, fluid flow in sedimentary…”
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The thermal maturity of sedimentary basins as revealed by magnetic mineralogy
Published in Basin research (2020)“…The thermal evolution of sedimentary basins is usually constrained by maturity data, which is interpreted from Rock‐Eval pyrolysis and vitrinite reflectance…”
Get full text
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Structural and fluid-migration control on hill-hole pair formation: Evidence from high-resolution 3D seismic data from the SW Barents Sea
Published in Geomorphology (Amsterdam, Netherlands) (2022)“…Hill-hole pairs are subglacial landforms consisting of thrust-block hills and associated source depressions. Formed by evacuation of material where ice sheets…”
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The Aptian (Early Cretaceous) oceanic anoxic event (OAE1a) in Svalbard, Barents Sea, and the absolute age of the Barremian-Aptian boundary
Published in Palaeogeography, palaeoclimatology, palaeoecology (01-12-2016)“…The age of the Cretaceous Barremian-Aptian boundary has been a long-standing problem in the geological timescale. Age suggestions range between 126Ma and…”
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