Major and trace element analyses of ODP Leg 120 volcanic rocks (Table 1)
Widespread Lower Cretaceous magmatism occurred along the Indian-Australian/Antarctic margins, and in the juvenile Indian Ocean, during the rifting of eastern Gondwana. The formation of this magmatic province probably began around 120-130 Ma with the eruption of basalts on the Naturaliste Plateau and...
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Format: | Dataset |
Language: | English |
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PANGAEA
1992
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Online Access: | https://doi.pangaea.de/10.1594/PANGAEA.759908 https://doi.org/10.1594/PANGAEA.759908 |
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.759908 |
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record_format |
openpolar |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
120-747C 120-748C 120-749C 120-750B Albite Aluminium oxide Anorthite Apatite Barium Calcium oxide Cerium Chromium CIPW Norm Corundum Diopside DRILL Drilling/drill rig DSDP/ODP/IODP sample designation Elements total Europium Event label Gallium Hafnium Hypersthene Ilmenite Instrumental neutron activation analysis (INAA) (Reimann et al. 1998) Iron oxide Fe2O3 Joides Resolution Lanthanum Leg120 Loss on ignition Lutetium Magnesium oxide Manganese oxide Montmorillonite Neodymium Nepheline Nickel Niobium Ocean Drilling Program ODP Olivine Orthoclase Phosphorus pentoxide Potassium oxide Quartz Rubidium |
spellingShingle |
120-747C 120-748C 120-749C 120-750B Albite Aluminium oxide Anorthite Apatite Barium Calcium oxide Cerium Chromium CIPW Norm Corundum Diopside DRILL Drilling/drill rig DSDP/ODP/IODP sample designation Elements total Europium Event label Gallium Hafnium Hypersthene Ilmenite Instrumental neutron activation analysis (INAA) (Reimann et al. 1998) Iron oxide Fe2O3 Joides Resolution Lanthanum Leg120 Loss on ignition Lutetium Magnesium oxide Manganese oxide Montmorillonite Neodymium Nepheline Nickel Niobium Ocean Drilling Program ODP Olivine Orthoclase Phosphorus pentoxide Potassium oxide Quartz Rubidium Storey, Michael Kent, R W Saunders, Andrew D Salters, Vincent J M Hergt, Janet M Whitechurch, Hubert Sevigny, James H Thirlwall, Matthew F Leat, Philip Ghose, N C Gifford, M Major and trace element analyses of ODP Leg 120 volcanic rocks (Table 1) |
topic_facet |
120-747C 120-748C 120-749C 120-750B Albite Aluminium oxide Anorthite Apatite Barium Calcium oxide Cerium Chromium CIPW Norm Corundum Diopside DRILL Drilling/drill rig DSDP/ODP/IODP sample designation Elements total Europium Event label Gallium Hafnium Hypersthene Ilmenite Instrumental neutron activation analysis (INAA) (Reimann et al. 1998) Iron oxide Fe2O3 Joides Resolution Lanthanum Leg120 Loss on ignition Lutetium Magnesium oxide Manganese oxide Montmorillonite Neodymium Nepheline Nickel Niobium Ocean Drilling Program ODP Olivine Orthoclase Phosphorus pentoxide Potassium oxide Quartz Rubidium |
description |
Widespread Lower Cretaceous magmatism occurred along the Indian-Australian/Antarctic margins, and in the juvenile Indian Ocean, during the rifting of eastern Gondwana. The formation of this magmatic province probably began around 120-130 Ma with the eruption of basalts on the Naturaliste Plateau and at Bunbury, western Australia. On the northeast margin of India, activity began around 117 Ma with the Rajmahal continental basalts and associated lamprophyre intrusions. The formation of the Kerguelen Plateau in the Indian Ocean began no later than 114 Ma. Ultramafic lamprophyres (alnoites) were emplaced in the Prince Charles Mountains near the Antarctic continental margin at ~ 110 Ma. These events are considered to be related to a major mantle plume, the remnant of which is situated beneath the region of Kerguelen and Heard islands at the present day. Geochemical data are presented for each of these volcanic suites and are indicative of complex interactions between asthenosphere-derived magmas and the continental lithosphere. Kerguelen Plateau basalts have Sr and Nd isotopic compositions lying outside the field for Indian Ocean mid-ocean ridge basalts (MORB) but, with the exception of Site 738 at the southern end of the plateau, within the range of more recent hotspot basalts from Kerguelen and Heard Islands. However, a number of the plateau tholeiites are characterized by lower 206Pb/204Pb ratios than are basalts from Kerguelen Island, and many also have anomalously high La/Nb ratios. These features suggest that the source of the Kerguelen Plateau basalts suffered contamination by components derived from the Gondwana continental lithosphere. An extreme expression of this lithospheric signature is shown by a tholeiite from Site 738, suggesting that the southernmost part of the Kerguelen Plateau may be underlain by continental crust. The Rajmahal tholeiites mostly fall into two distinct geochemical groups. Some Group I tholeiites have Sr and Nd isotopic compositions and incompatible element abundances, similar to ... |
format |
Dataset |
author |
Storey, Michael Kent, R W Saunders, Andrew D Salters, Vincent J M Hergt, Janet M Whitechurch, Hubert Sevigny, James H Thirlwall, Matthew F Leat, Philip Ghose, N C Gifford, M |
author_facet |
Storey, Michael Kent, R W Saunders, Andrew D Salters, Vincent J M Hergt, Janet M Whitechurch, Hubert Sevigny, James H Thirlwall, Matthew F Leat, Philip Ghose, N C Gifford, M |
author_sort |
Storey, Michael |
title |
Major and trace element analyses of ODP Leg 120 volcanic rocks (Table 1) |
title_short |
Major and trace element analyses of ODP Leg 120 volcanic rocks (Table 1) |
title_full |
Major and trace element analyses of ODP Leg 120 volcanic rocks (Table 1) |
title_fullStr |
Major and trace element analyses of ODP Leg 120 volcanic rocks (Table 1) |
title_full_unstemmed |
Major and trace element analyses of ODP Leg 120 volcanic rocks (Table 1) |
title_sort |
major and trace element analyses of odp leg 120 volcanic rocks (table 1) |
publisher |
PANGAEA |
publishDate |
1992 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.759908 https://doi.org/10.1594/PANGAEA.759908 |
op_coverage |
MEDIAN LATITUDE: -57.390250 * MEDIAN LONGITUDE: 78.359775 * SOUTH-BOUND LATITUDE: -58.717000 * WEST-BOUND LONGITUDE: 76.407500 * NORTH-BOUND LATITUDE: -54.811000 * EAST-BOUND LONGITUDE: 81.239500 * DATE/TIME START: 1988-03-09T06:45:00 * DATE/TIME END: 1988-04-23T04:00:00 * MINIMUM ELEVATION: -2041.0 m * MAXIMUM ELEVATION: -1080.0 m |
long_lat |
ENVELOPE(69.500,69.500,-49.250,-49.250) ENVELOPE(67.246,67.246,-71.427,-71.427) ENVELOPE(76.407500,81.239500,-54.811000,-58.717000) |
geographic |
Antarctic Indian Kerguelen Kerguelen Island Prince Charles Mountains The Antarctic |
geographic_facet |
Antarctic Indian Kerguelen Kerguelen Island Prince Charles Mountains The Antarctic |
genre |
Antarc* Antarctic Prince Charles Mountains |
genre_facet |
Antarc* Antarctic Prince Charles Mountains |
op_source |
Supplement to: Storey, Michael; Kent, R W; Saunders, Andrew D; Salters, Vincent J M; Hergt, Janet M; Whitechurch, Hubert; Sevigny, James H; Thirlwall, Matthew F; Leat, Philip; Ghose, N C; Gifford, M (1992): Lower Cretaceous volcanic rocks on continental margins and their relationship to the Kerguelen Plateau. In: Wise, SW; Schlich, R; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 120, 33-53, https://doi.org/10.2973/odp.proc.sr.120.118.1992 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.759908 https://doi.org/10.1594/PANGAEA.759908 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1594/PANGAEA.75990810.2973/odp.proc.sr.120.118.1992 |
_version_ |
1811643470123630592 |
spelling |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.759908 2024-09-30T14:25:06+00:00 Major and trace element analyses of ODP Leg 120 volcanic rocks (Table 1) Storey, Michael Kent, R W Saunders, Andrew D Salters, Vincent J M Hergt, Janet M Whitechurch, Hubert Sevigny, James H Thirlwall, Matthew F Leat, Philip Ghose, N C Gifford, M MEDIAN LATITUDE: -57.390250 * MEDIAN LONGITUDE: 78.359775 * SOUTH-BOUND LATITUDE: -58.717000 * WEST-BOUND LONGITUDE: 76.407500 * NORTH-BOUND LATITUDE: -54.811000 * EAST-BOUND LONGITUDE: 81.239500 * DATE/TIME START: 1988-03-09T06:45:00 * DATE/TIME END: 1988-04-23T04:00:00 * MINIMUM ELEVATION: -2041.0 m * MAXIMUM ELEVATION: -1080.0 m 1992 text/tab-separated-values, 1209 data points https://doi.pangaea.de/10.1594/PANGAEA.759908 https://doi.org/10.1594/PANGAEA.759908 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.759908 https://doi.org/10.1594/PANGAEA.759908 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess Supplement to: Storey, Michael; Kent, R W; Saunders, Andrew D; Salters, Vincent J M; Hergt, Janet M; Whitechurch, Hubert; Sevigny, James H; Thirlwall, Matthew F; Leat, Philip; Ghose, N C; Gifford, M (1992): Lower Cretaceous volcanic rocks on continental margins and their relationship to the Kerguelen Plateau. In: Wise, SW; Schlich, R; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 120, 33-53, https://doi.org/10.2973/odp.proc.sr.120.118.1992 120-747C 120-748C 120-749C 120-750B Albite Aluminium oxide Anorthite Apatite Barium Calcium oxide Cerium Chromium CIPW Norm Corundum Diopside DRILL Drilling/drill rig DSDP/ODP/IODP sample designation Elements total Europium Event label Gallium Hafnium Hypersthene Ilmenite Instrumental neutron activation analysis (INAA) (Reimann et al. 1998) Iron oxide Fe2O3 Joides Resolution Lanthanum Leg120 Loss on ignition Lutetium Magnesium oxide Manganese oxide Montmorillonite Neodymium Nepheline Nickel Niobium Ocean Drilling Program ODP Olivine Orthoclase Phosphorus pentoxide Potassium oxide Quartz Rubidium dataset 1992 ftpangaea https://doi.org/10.1594/PANGAEA.75990810.2973/odp.proc.sr.120.118.1992 2024-09-11T00:15:18Z Widespread Lower Cretaceous magmatism occurred along the Indian-Australian/Antarctic margins, and in the juvenile Indian Ocean, during the rifting of eastern Gondwana. The formation of this magmatic province probably began around 120-130 Ma with the eruption of basalts on the Naturaliste Plateau and at Bunbury, western Australia. On the northeast margin of India, activity began around 117 Ma with the Rajmahal continental basalts and associated lamprophyre intrusions. The formation of the Kerguelen Plateau in the Indian Ocean began no later than 114 Ma. Ultramafic lamprophyres (alnoites) were emplaced in the Prince Charles Mountains near the Antarctic continental margin at ~ 110 Ma. These events are considered to be related to a major mantle plume, the remnant of which is situated beneath the region of Kerguelen and Heard islands at the present day. Geochemical data are presented for each of these volcanic suites and are indicative of complex interactions between asthenosphere-derived magmas and the continental lithosphere. Kerguelen Plateau basalts have Sr and Nd isotopic compositions lying outside the field for Indian Ocean mid-ocean ridge basalts (MORB) but, with the exception of Site 738 at the southern end of the plateau, within the range of more recent hotspot basalts from Kerguelen and Heard Islands. However, a number of the plateau tholeiites are characterized by lower 206Pb/204Pb ratios than are basalts from Kerguelen Island, and many also have anomalously high La/Nb ratios. These features suggest that the source of the Kerguelen Plateau basalts suffered contamination by components derived from the Gondwana continental lithosphere. An extreme expression of this lithospheric signature is shown by a tholeiite from Site 738, suggesting that the southernmost part of the Kerguelen Plateau may be underlain by continental crust. The Rajmahal tholeiites mostly fall into two distinct geochemical groups. Some Group I tholeiites have Sr and Nd isotopic compositions and incompatible element abundances, similar to ... Dataset Antarc* Antarctic Prince Charles Mountains PANGAEA - Data Publisher for Earth & Environmental Science Antarctic Indian Kerguelen Kerguelen Island ENVELOPE(69.500,69.500,-49.250,-49.250) Prince Charles Mountains ENVELOPE(67.246,67.246,-71.427,-71.427) The Antarctic ENVELOPE(76.407500,81.239500,-54.811000,-58.717000) |