The Rio Grande Rise and Jean Charcot Seamount Chain - microcontinents or the trail of the Tristan-Gough hotspot? Cruise No. MSM 82, 18 March 2019 - 24 April 2019, Montevideo (Uruguay) - Montevideo (Uruguay), RIOGRANDE
Rio Grande Rise: microcontinent, mantle plume, or both? The origin of the Rio Grande Rise (RGR) is debated. It could represent a continental sliver, or a large igneous province that was emplaced in the late Cretaceous after the opening of the South Atlantic Ocean. The interplay between the RGR and t...
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Gutachterpanel Forschungsschiffe
2019
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Online Access: | https://oceanrep.geomar.de/id/eprint/48596/ https://oceanrep.geomar.de/id/eprint/48596/1/MSM82_CR.pdf https://doi.org/10.2312/cr_msm82 |
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ftoceanrep:oai:oceanrep.geomar.de:48596 2023-07-30T04:06:50+02:00 The Rio Grande Rise and Jean Charcot Seamount Chain - microcontinents or the trail of the Tristan-Gough hotspot? Cruise No. MSM 82, 18 March 2019 - 24 April 2019, Montevideo (Uruguay) - Montevideo (Uruguay), RIOGRANDE Geissler, Wolfram Krumm, Stefan O'Connor, John Geldmacher, Jörg Altenbernd, Tabea Homrighausen, Stephan Geils, Jonah Hoyer, Patrick Lehmann, Carsten Shearing, Jennifer 2019 text https://oceanrep.geomar.de/id/eprint/48596/ https://oceanrep.geomar.de/id/eprint/48596/1/MSM82_CR.pdf https://doi.org/10.2312/cr_msm82 en eng Gutachterpanel Forschungsschiffe https://oceanrep.geomar.de/id/eprint/48596/1/MSM82_CR.pdf Geissler, W., Krumm, S., O'Connor, J., Geldmacher, J. , Altenbernd, T., Homrighausen, S., Geils, J., Hoyer, P., Lehmann, C. and Shearing, J. (2019) The Rio Grande Rise and Jean Charcot Seamount Chain - microcontinents or the trail of the Tristan-Gough hotspot? Cruise No. MSM 82, 18 March 2019 - 24 April 2019, Montevideo (Uruguay) - Montevideo (Uruguay), RIOGRANDE. Open Access . MARIA S. MERIAN-Berichte, MSM82 . Gutachterpanel Forschungsschiffe, Bonn, 200 pp. DOI 10.2312/cr_msm82 <https://doi.org/10.2312/cr_msm82>. doi:10.2312/cr_msm82 info:eu-repo/semantics/openAccess Report NonPeerReviewed 2019 ftoceanrep https://doi.org/10.2312/cr_msm82 2023-07-09T23:19:01Z Rio Grande Rise: microcontinent, mantle plume, or both? The origin of the Rio Grande Rise (RGR) is debated. It could represent a continental sliver, or a large igneous province that was emplaced in the late Cretaceous after the opening of the South Atlantic Ocean. The interplay between the RGR and the nearby Jean Charcot Seamount Chain (JCSC) is also not understood. Cruise MSM82 dredge sampled rocks from the JCSC and the RGR and measured two seismic refraction profiles across the RGR where it is bisected by a long rift graben. A range of geophysical data were also collected during much of the expedition, including magnetics, gravity, bathymetry (Kongsberg EM 122), sub-bottom profiling (ATLAS PARASOUND DS P70) and ADCP data. The combination of geochronological, geochemical and geophysical information will provide a unique window on the relation between mantle plumes, continental fragments and the evolution of large igneous provinces. Report South Atlantic Ocean OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Charcot ENVELOPE(139.017,139.017,-69.367,-69.367) Gough ENVELOPE(159.367,159.367,-81.633,-81.633) Kongsberg ENVELOPE(19.082,19.082,69.123,69.123) Tristan ENVELOPE(140.900,140.900,-66.735,-66.735) Uruguay |
institution |
Open Polar |
collection |
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
op_collection_id |
ftoceanrep |
language |
English |
description |
Rio Grande Rise: microcontinent, mantle plume, or both? The origin of the Rio Grande Rise (RGR) is debated. It could represent a continental sliver, or a large igneous province that was emplaced in the late Cretaceous after the opening of the South Atlantic Ocean. The interplay between the RGR and the nearby Jean Charcot Seamount Chain (JCSC) is also not understood. Cruise MSM82 dredge sampled rocks from the JCSC and the RGR and measured two seismic refraction profiles across the RGR where it is bisected by a long rift graben. A range of geophysical data were also collected during much of the expedition, including magnetics, gravity, bathymetry (Kongsberg EM 122), sub-bottom profiling (ATLAS PARASOUND DS P70) and ADCP data. The combination of geochronological, geochemical and geophysical information will provide a unique window on the relation between mantle plumes, continental fragments and the evolution of large igneous provinces. |
format |
Report |
author |
Geissler, Wolfram Krumm, Stefan O'Connor, John Geldmacher, Jörg Altenbernd, Tabea Homrighausen, Stephan Geils, Jonah Hoyer, Patrick Lehmann, Carsten Shearing, Jennifer |
spellingShingle |
Geissler, Wolfram Krumm, Stefan O'Connor, John Geldmacher, Jörg Altenbernd, Tabea Homrighausen, Stephan Geils, Jonah Hoyer, Patrick Lehmann, Carsten Shearing, Jennifer The Rio Grande Rise and Jean Charcot Seamount Chain - microcontinents or the trail of the Tristan-Gough hotspot? Cruise No. MSM 82, 18 March 2019 - 24 April 2019, Montevideo (Uruguay) - Montevideo (Uruguay), RIOGRANDE |
author_facet |
Geissler, Wolfram Krumm, Stefan O'Connor, John Geldmacher, Jörg Altenbernd, Tabea Homrighausen, Stephan Geils, Jonah Hoyer, Patrick Lehmann, Carsten Shearing, Jennifer |
author_sort |
Geissler, Wolfram |
title |
The Rio Grande Rise and Jean Charcot Seamount Chain - microcontinents or the trail of the Tristan-Gough hotspot? Cruise No. MSM 82, 18 March 2019 - 24 April 2019, Montevideo (Uruguay) - Montevideo (Uruguay), RIOGRANDE |
title_short |
The Rio Grande Rise and Jean Charcot Seamount Chain - microcontinents or the trail of the Tristan-Gough hotspot? Cruise No. MSM 82, 18 March 2019 - 24 April 2019, Montevideo (Uruguay) - Montevideo (Uruguay), RIOGRANDE |
title_full |
The Rio Grande Rise and Jean Charcot Seamount Chain - microcontinents or the trail of the Tristan-Gough hotspot? Cruise No. MSM 82, 18 March 2019 - 24 April 2019, Montevideo (Uruguay) - Montevideo (Uruguay), RIOGRANDE |
title_fullStr |
The Rio Grande Rise and Jean Charcot Seamount Chain - microcontinents or the trail of the Tristan-Gough hotspot? Cruise No. MSM 82, 18 March 2019 - 24 April 2019, Montevideo (Uruguay) - Montevideo (Uruguay), RIOGRANDE |
title_full_unstemmed |
The Rio Grande Rise and Jean Charcot Seamount Chain - microcontinents or the trail of the Tristan-Gough hotspot? Cruise No. MSM 82, 18 March 2019 - 24 April 2019, Montevideo (Uruguay) - Montevideo (Uruguay), RIOGRANDE |
title_sort |
rio grande rise and jean charcot seamount chain - microcontinents or the trail of the tristan-gough hotspot? cruise no. msm 82, 18 march 2019 - 24 april 2019, montevideo (uruguay) - montevideo (uruguay), riogrande |
publisher |
Gutachterpanel Forschungsschiffe |
publishDate |
2019 |
url |
https://oceanrep.geomar.de/id/eprint/48596/ https://oceanrep.geomar.de/id/eprint/48596/1/MSM82_CR.pdf https://doi.org/10.2312/cr_msm82 |
long_lat |
ENVELOPE(139.017,139.017,-69.367,-69.367) ENVELOPE(159.367,159.367,-81.633,-81.633) ENVELOPE(19.082,19.082,69.123,69.123) ENVELOPE(140.900,140.900,-66.735,-66.735) |
geographic |
Charcot Gough Kongsberg Tristan Uruguay |
geographic_facet |
Charcot Gough Kongsberg Tristan Uruguay |
genre |
South Atlantic Ocean |
genre_facet |
South Atlantic Ocean |
op_relation |
https://oceanrep.geomar.de/id/eprint/48596/1/MSM82_CR.pdf Geissler, W., Krumm, S., O'Connor, J., Geldmacher, J. , Altenbernd, T., Homrighausen, S., Geils, J., Hoyer, P., Lehmann, C. and Shearing, J. (2019) The Rio Grande Rise and Jean Charcot Seamount Chain - microcontinents or the trail of the Tristan-Gough hotspot? Cruise No. MSM 82, 18 March 2019 - 24 April 2019, Montevideo (Uruguay) - Montevideo (Uruguay), RIOGRANDE. Open Access . MARIA S. MERIAN-Berichte, MSM82 . Gutachterpanel Forschungsschiffe, Bonn, 200 pp. DOI 10.2312/cr_msm82 <https://doi.org/10.2312/cr_msm82>. doi:10.2312/cr_msm82 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.2312/cr_msm82 |
_version_ |
1772819767991730176 |