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  • 1
    Online-Ressource
    Online-Ressource
    TIPTEQ-Teilvorhaben : Seismoturbidite ; fachlicher Abschlussbericht ; Projektlaufzeit: 01.01.2004 - 30.06.2005 (2005)
    Hannover : BGR
    Details Verfügbarkeit
    Schlagwort(e): Forschungsbericht ; Turbidit
    Materialart: Online-Ressource
    Seiten: Online-Ressource (53 S., 3,02 MB) , Ill., graph. Darst., Kt.
    URL: https://edocs.tib.eu/files/e01fb06/509130801.pdf
    URL: https://doi.org/10.2314/GBV:509130801
    URL: https://edocs.tib.eu/files/e01fb06/509130801l.pdf
    DOI: 10.2314/GBV:509130801
    Sprache: Deutsch , Englisch
    Anmerkung: Förderkennzeichen BMBF 03G0595A. - Literaturangaben , Unterschiede zwischen dem gedruckten Dokument und der elektronischen Ressource können nicht ausgeschlossen werden , Auch als gedr. Ausg. vorh , Systemvoraussetzungen: Acrobat reader. , Text überw. engl., teilw. dt.
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  • 2
    Buch
    Buch
    Rekonstruktion der paläozeanographischen Entwicklung des Marmarameers anhand multipler Analyseverfahren (2004)
    Details Verfügbarkeit
    Schlagwort(e): Hochschulschrift ; Marmarameer ; Jungpleistozän ; Paläoozeanographie ; Meeressediment ; Mikropaläontologie ; Geochemie ; Marmarameer ; Holozän ; Paläoozeanographie ; Meeressediment ; Mikropaläontologie ; Geochemie
    Materialart: Buch
    Seiten: 169 Bl , Ill., graph. Darst., Kt , 30 cm
    DDC: 550
    Sprache: Deutsch
    Anmerkung: Berlin, Freie Univ., Diss, 2004
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  • 3
    Online-Ressource
    Online-Ressource
    Turbidites deposited on Southern Central Chilean seamounts : evidence for energetic turbidity currents (2008)
    Dazugehörige Bände
    Details Verfügbarkeit
    In: Marine geology, Amsterdam [u.a.] : Elsevier Science, 1964, 251(2008), 1/2, Seite 15-31, 1872-6151
    In: volume:251
    In: year:2008
    In: number:1/2
    In: pages:15-31
    Materialart: Online-Ressource
    ISSN: 1872-6151
    DOI: 10.1016/j.margeo.2008.01.008
    Sprache: Englisch
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  • 4
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    Grain size distribution analysis of prominent beds on Southern Central Chilean seamounts (2016)
    PANGAEA
    In:  Supplement to: Völker, David; Reichel, Thomas; Wiedicke, Michael; Heubeck, Christoph (2008): Turbidites deposited on Southern Central Chilean seamounts: Evidence for energetic turbidity currents. Marine Geology, 251(1-2), 15-31, https://doi.org/10.1016/j.margeo.2008.01.008
    Details
    Publikationsdatum: 2023-01-13
    Beschreibung: Gravity cores obtained from isolated seamounts located within, and rising up to 300 m from the sediment-filled Peru-Chile Trench off Southern Central Chile (36°S-39°S) contain numerous turbidite layers which are much coarser than the hemipelagic background sedimentation. The mineralogical composition of some of the beds indicates a mixed origin from various source terrains while the faunal assemblage of benthic foraminifera in one of the turbidite layers shows a mixed origin from upper shelfal to middle-lower bathyal depths which could indicate a multi-source origin and therefore indicate an earthquake triggering of the causing turbidity currents. The bathymetric setting and the grain size distribution of the sampled layers, together with swath echosounder and sediment echosounder data which monitor the distribution of turbidites on the elevated Nazca Plate allow some estimates on the flow direction, flow velocity and height of the causing turbidity currents. We discuss two alternative models of deposition, both of which imply high (175-450 m) turbidity currents and we suggest a channelized transport process as the general mode of turbidite deposition. Whether these turbidites are suspension fallout products of thick turbiditic flows or bedload deposits from sheet-like turbidity currents overwhelming elevated structures cannot be decided upon using our sedimentological data, but the specific morphology of the seamounts rather argues for the first option. Oxygen isotope stratigraphy of one of the cores indicates that the turbiditic sequences were deposited during the last Glacial period and during the following transition period and turbiditic deposition stopped during the Holocene. This climatic coupling seems to be dominant, while the occurrence of megathrust earthquakes provides a trigger mechanism. This seismic triggering takes effect only during times of very high sediment supply to the shelf and slope.
    Materialart: Dataset
    Format: application/zip, 3 datasets
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    DATA PANGAEA
  • 5
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    (Appendix T2) Grain size distribution of graded beds from sediment core SO161/5_50SL in the Peru-Chile Trench (2016)
    PANGAEA
    Details
    Publikationsdatum: 2023-06-27
    Schlagwort(e): DEPTH, sediment/rock; Gravity corer (Kiel type); Laser particle analyser (Galai CIS-100); Size fraction 0.001-0.0005 mm; Size fraction 0.002-0.001 mm, 9.0-10.0 phi; Size fraction 0.003-0.002 mm; Size fraction 0.004-0.003 mm; Size fraction 0.005-0.004 mm; Size fraction 0.006-0.005 mm; Size fraction 0.007-0.006 mm; Size fraction 0.008-0.007 mm; Size fraction 0.009-0.008 mm; Size fraction 0.010-0.009 mm; Size fraction 0.020-0.010 mm; Size fraction 0.030-0.020 mm; Size fraction 0.040-0.030 mm; Size fraction 0.050-0.040 mm; Size fraction 0.060-0.050 mm; Size fraction 0.070-0.060 mm; Size fraction 0.080-0.070 mm; Size fraction 0.090-0.080 mm; Size fraction 0.100-0.090 mm; Size fraction 0.150-0.100 mm; Size fraction 0.200-0.150 mm; Size fraction 0.250-0.200 mm; Size fraction 0.300-0.250 mm; SL; SO161/5; SO161/5_50SL; Sonne; SPOC
    Materialart: Dataset
    Format: text/tab-separated-values, 253 data points
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    DATA PANGAEA
  • 6
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    (Appendix T3) Grain size distribution of graded beds from sediment core SO161/5_100SL in the Peru-Chile Trench (2016)
    PANGAEA
    Details
    Publikationsdatum: 2023-06-27
    Schlagwort(e): DEPTH, sediment/rock; Gravity corer (Kiel type); Laser particle analyser (Galai CIS-100); Size fraction 0.001-0.0005 mm; Size fraction 0.002-0.001 mm, 9.0-10.0 phi; Size fraction 0.003-0.002 mm; Size fraction 0.004-0.003 mm; Size fraction 0.005-0.004 mm; Size fraction 0.006-0.005 mm; Size fraction 0.007-0.006 mm; Size fraction 0.008-0.007 mm; Size fraction 0.009-0.008 mm; Size fraction 0.010-0.009 mm; Size fraction 0.020-0.010 mm; Size fraction 0.030-0.020 mm; Size fraction 0.040-0.030 mm; Size fraction 0.050-0.040 mm; Size fraction 0.060-0.050 mm; Size fraction 0.070-0.060 mm; Size fraction 0.080-0.070 mm; Size fraction 0.090-0.080 mm; Size fraction 0.100-0.090 mm; Size fraction 0.150-0.100 mm; Size fraction 0.200-0.150 mm; Size fraction 0.250-0.200 mm; Size fraction 0.300-0.250 mm; SL; SO161/5; SO161/5_100SL; Sonne; SPOC
    Materialart: Dataset
    Format: text/tab-separated-values, 230 data points
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    DATA PANGAEA
  • 7
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    (Appendix T4) Grain size distribution of graded beds from sediment core SO161/5_101SL in the Peru-Chile Trench (2016)
    PANGAEA
    Details
    Publikationsdatum: 2023-06-27
    Schlagwort(e): DEPTH, sediment/rock; Gravity corer (Kiel type); Laser particle analyser (Galai CIS-100); Size fraction 0.001-0.0005 mm; Size fraction 0.002-0.001 mm, 9.0-10.0 phi; Size fraction 0.003-0.002 mm; Size fraction 0.004-0.003 mm; Size fraction 0.005-0.004 mm; Size fraction 0.006-0.005 mm; Size fraction 0.007-0.006 mm; Size fraction 0.008-0.007 mm; Size fraction 0.009-0.008 mm; Size fraction 0.010-0.009 mm; Size fraction 0.020-0.010 mm; Size fraction 0.030-0.020 mm; Size fraction 0.040-0.030 mm; Size fraction 0.050-0.040 mm; Size fraction 0.060-0.050 mm; Size fraction 0.070-0.060 mm; Size fraction 0.080-0.070 mm; Size fraction 0.090-0.080 mm; Size fraction 0.100-0.090 mm; Size fraction 0.150-0.100 mm; Size fraction 0.200-0.150 mm; Size fraction 0.250-0.200 mm; Size fraction 0.300-0.250 mm; SL; SO161/5; SO161/5_101SL; Sonne; SPOC
    Materialart: Dataset
    Format: text/tab-separated-values, 460 data points
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  • 8
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    Introduction to special section: Exploration and characterization of gas hydrates (2016)
    Society of Exploration Geophysicists
    In:  Interpretation, 4 (1). SAi-SAii.
    Details
    Publikationsdatum: 2019-02-01
    Materialart: Article , PeerReviewed
    Format: text
    DOI: 10.1190/INT-2016-0103-SPSEINTRO.1
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  • 9
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    Basin-scale gas hydrate-free gas re-cycling process derived from 3D numerical modeling at the Green Canyon province, Gulf of Mexico (2016)
    In:  [Poster] In: Gordon Research Conference on Natural Gas Hydrate Systems, 28.02.-04.03.2016, Galvestone, TX, US .
    Details
    Publikationsdatum: 2016-03-08
    Beschreibung: Gas migration pathways in the Gulf of Mexico are strongly influenced by the extensive formation and time evolution of salt canopies, welds and sheets. This multi-level salt system (known as the Louann Salt formation) deposited mostly within Callovian age (upper Middle Jurassic) and mobilized during late Miocene up to Pliocene-Pleistocene times controls the extension and direction of petroleum components migration over the entire history of the basin which, in return, has a major impact on potential gas transportation into the gas hydrate stability zone (GHSZ). In the context of gas hydrate formation, presence of extensive salt deposits tends to bend gas migration pathways from vertical (typical for the Gulf of Mexico region) towards rather horizontal and dispersed. However, amalgamation of two or more salt structures often results in re-focusing of the flow towards the local topographic subsalt heights. Together with the formation of local sediment discontinuity structures such as faults developing at the rims and tops of rootless salt deposits related to further stages of allochthonous salt mobilization, new high-permeability migration pathways develop and act as direct connection for the thermogenic gas to the GHSZ. Our study presents the 3D modeling solution quantifying and exploring the gas hydrate accumulation potential in the marine environment experiencing salt tectonics such as the Green Canyon, Gulf of Mexico. This modeling study evaluates the potential of bio- and thermogenic gas hydrate formation within Pliocene-Pleistocene reservoir layers based on full basin re-construction which accounts for depositional and transient thermal history of the basin, source rock maturation, petroleum generation, expulsion and migration, salt tectonics and associated faults development. Based on a numerical study calibrated with the existing field data, we present a new distribution pattern of gas hydrates attributed to both microbial and thermogenic origin. We present here an explanation for a formation mechanism of large gas hydrate amounts (〉 70 vol. %) wide-spread at the base of the stability zone as a result of the gas hydrate-free gas recycling process enhanced by very high Neogene sedimentation rates in the region. We suggest that the rapid development of secondary intra-salt mini-basins situated on top of the allochthonous salt deposits and following sediment subsidence caused a consequent dislocation of the GHSZ lower boundary and led to efficient gas hydrate dissociation process followed by a free gas re-charge into the GHSZ.
    Materialart: Conference or Workshop Item , NonPeerReviewed
    Format: text
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    OceanRep: Poster
  • 10
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    3D basin-scale modeling of a natural gas hydrate system at the Green Canyon, Gulf of Mexico (2016)
    In:  [Poster] In: 13. International Conference on Gas in Marine Sediments (GIMS13), 19.-22.09.2016, Tromsø, Norway .
    Details
    Publikationsdatum: 2016-10-13
    Materialart: Conference or Workshop Item , NonPeerReviewed
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