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  • The Royal Society  (2)
  • PANGAEA  (1)
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  • 1
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    Compilation of swath-mapping bathymetry from oceanic transform fault systems - a global approach (2020)
    PANGAEA
    Details
    Publication Date: 2024-04-20
    Description: Bathymetric data from oceanic transform faults and their associated fracture zones were compiled, providing high-resolution gridded seafloor topography. Data used in this compilation were open and archived at US American National Oceanographic and Atmospheric Administration (https://maps.ngdc.noaa.gov/viewers/bathymetry), Japan Agency for Marine-Earth Science and Technology (http://www.godac.jamstec.go.jp/darwin/e), and the German Datacenter for bathymetric data (https://www.bsh.de/EN/DATA/Oceanographic_Data_Center/Surveying_data/surveying_data_node). Data were processed and gridded using Multibeam System (https://www.mbari.org/products/research-software/mb-system) and can be displayed using Generic Mapping Tools (https://gmt.soest.hawaii.edu). All grids are in netCDF format. The compilation includes transform faults and fracture zones from the Northern and Southern East Pacific Rise, the Cosos-Nazca spreading center, Chile Rise and the Pacific Antarctic Ridge, the Southwest Indian Ridge, Central Indian Ridge and Southeast Indian Ridge as well as the Mid-Atlantic Ridge.
    Keywords: Area/locality; Binary Object; Binary Object (File Size); Binary Object (Media Type); CIR_Argo; CIR_FractureZone_MarieCelester; CIR_MarieCelester; CocosSpreadingRidge_Transform85W; CocosSpreadingRidge_Transform91W; CR_Transform39S; CR_Transform43S; EPR_Clipperton; EPR_Orozco; Event label; fracture zones; gridded bathymetry; Indian Ocean; Latitude of event; Longitude of event; MAR_Ascension; MAR_Atlantis; MAR_Cox; MAR_FractureZone_2345S; MAR_Hayes; MAR_Kane; MAR_Marathon; MAR_Oceanographer; MAR_Transform2220S; MAR_Transform2545S; Mid-Ocean Ridges; North Pacific Ocean; PAR_Pitman; SBM; SEIR_Transform100E; SEIR_Transform103E; SEIR_Transform78E; SEIR_Transform88E; SEIR_Vlamingh; SEIR_Zeewolf; SEPR_Garrett; SEPR_Gofar; SEPR_Quebrada_Discovery; South Atlantic Ocean; South Pacific Ocean; Swath bathymetry mapping; swath-mapping echosounding; SWIR_AndrewBain_NE; SWIR_AndrewBain_SW; SWIR_AtlantisII; SWIR_DuTroit; SWIR_FractureZone_5545E; SWIR_Marion; SWIR_Shaka; transform faults
    Type: Dataset
    Format: text/tab-separated-values, 108 data points
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    DATA PANGAEA
  • 2
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    Sills and gas generation in the Siberian Traps (2018)
    The Royal Society
    Details
    Publication Date: 2018-09-03
    Description: On its way to the surface, the Siberian Traps magma created a complex sub-volcanic plumbing system. This resulted in a large-scale sill emplacement within the Tunguska Basin and subsequent release of sediment-derived volatiles during contact metamorphism. The distribution of sills and the released sediment-stored gas volume is, however, poorly constrained. In this paper, results from a study of nearly 300 deep boreholes intersecting sills are presented. The results show that sills with thicknesses above 100 m are abundant throughout the upper part of the sedimentary succession. A high proportion of the sills was emplaced within the Cambrian evaporites with average thicknesses in the 115–130 m range and a maximum thickness of 428 m. Thermal modelling of the cooling of the sills shows that the contact metamorphic aureoles are capable of generating 52–80 tonnes of CO 2  m −2 with contributions from both marine and terrestrial carbon. When up-scaling these borehole results, an area of 12–19 000 km 2 is required to generate 1000 Gt CO 2 . This represents only 0.7–1.2% of the total area in the Tunguska Basin affected by sills, emphasizing the importance of metamorphic gas generation in the Siberian Traps. These results strengthen the hypothesis of a sub-volcanic trigger and driver for the environmental perturbations during the End-Permian crisis. This article is part of a discussion meeting issue ‘Hyperthermals: rapid and extreme global warming in our geological past’.
    Print ISSN: 1364-503X
    Electronic ISSN: 1471-2962
    Topics: Mathematics , Physics , Technology
    Published by The Royal Society
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    PAPER CURRENT
  • 3
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    Sills and gas generation in the Siberian Traps (2018)
    The Royal Society
    In:  Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 376 (2130). p. 20170080.
    Details
    Publication Date: 2021-02-08
    Description: On its way to the surface, the Siberian Traps magma created a complex sub-volcanic plumbing system. This resulted in a large-scale sill emplacement within the Tunguska Basin and subsequent release of sediment-derived volatiles during contact metamorphism. The distribution of sills and the released sediment-stored gas volume is, however, poorly constrained. In this paper, results from a study of nearly 300 deep boreholes intersecting sills are presented. The results show that sills with thicknesses above 100 m are abundant throughout the upper part of the sedimentary succession. A high proportion of the sills was emplaced within the Cambrian evaporites with average thicknesses in the 115-130 m range and a maximum thickness of 428 m. Thermal modelling of the cooling of the sills shows that the contact metamorphic aureoles are capable of generating 52-80 tonnes of CO2 m(-2) with contributions from both marine and terrestrial carbon. When up-scaling these borehole results, an area of 12-19 000 km(2) is required to generate 1000 Gt CO2. This represents only 0.7-1.2% of the total area in the Tunguska Basin affected by sills, emphasizing the importance of metamorphic gas generation in the Siberian Traps. These results strengthen the hypothesis of a sub-volcanic trigger and driver for the environmental perturbations during the End-Permian crisis. This article is part of a discussion meeting issue 'Hyperthermals: rapid and extreme global warming in our geological past'.
    Type: Article , PeerReviewed
    Format: text
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    PAPER (OCEANREP)
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