Lead and strontium isotopic composition of some metalliferous and pelagic sediments and basalts at DSDP Leg 70 Holes
In recent years, metalliferous sediments have been discovered overlying newly generated oceanic crust in the East Pacific, North Atlantic, Indian Ocean, Red Sea, Gulf of Aden, and elsewhere (e.g., Boström, 1973; Lalou et al., 1977; Bischoff, 1969; Boström and Fisher, 1971; Cann et al., 1977, respect...
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1983
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.816125 2023-05-15T17:37:11+02:00 Lead and strontium isotopic composition of some metalliferous and pelagic sediments and basalts at DSDP Leg 70 Holes Barrett, T J MEDIAN LATITUDE: 0.802839 * MEDIAN LONGITUDE: -86.166890 * SOUTH-BOUND LATITUDE: 0.533300 * WEST-BOUND LONGITUDE: -86.410000 * NORTH-BOUND LATITUDE: 1.613200 * EAST-BOUND LONGITUDE: -86.090000 * DATE/TIME START: 1979-11-15T00:00:00 * DATE/TIME END: 1979-11-29T00:00:00 1983-06-26 application/zip, 2 datasets https://doi.pangaea.de/10.1594/PANGAEA.816125 https://doi.org/10.1594/PANGAEA.816125 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.816125 https://doi.org/10.1594/PANGAEA.816125 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Barrett, T J (1983): Lead and strontium isotopic composition of some metalliferous and pelagic sediments and basalts from the Galapagos Mounds area, Deep Sea Drilling Project Leg 70. In: Honnorez, J; Von Herzen, RP; et al. (eds.), Initial Reports of the Deep Sea Drilling Project (U.S. Govt. Printing Office), 70, 325-332, https://doi.org/10.2973/dsdp.proc.70.117.1983 70-506 70-506B 70-506C 70-506G 70-507B 70-507D 70-507F 70-508B 70-509B 70-510 Deep Sea Drilling Project DRILL Drilling/drill rig DSDP Glomar Challenger Leg70 NOAA and MMS Marine Minerals Geochemical Database NOAA-MMS North Pacific North Pacific/MOUND Dataset 1983 ftpangaea https://doi.org/10.1594/PANGAEA.816125 https://doi.org/10.2973/dsdp.proc.70.117.1983 2023-01-20T07:33:03Z In recent years, metalliferous sediments have been discovered overlying newly generated oceanic crust in the East Pacific, North Atlantic, Indian Ocean, Red Sea, Gulf of Aden, and elsewhere (e.g., Boström, 1973; Lalou et al., 1977; Bischoff, 1969; Boström and Fisher, 1971; Cann et al., 1977, respectively). Such material has also been recovered by drilling from sediments lying upon older oceanic crust (Boström et al., 1972, 1976; Horowitz and Cronan, 1976). Hydrothermal circulation of seawater at a spreading ridge results in the leaching of Fe, Mn, and possibly other elements from the basaltic volcanic layer and their transport and discharge into ocean bottom waters, whereupon fine-grained Fe-Mn-rich precipitates form and settle into the ambient sediment (cf. Corliss, 1971; Dasch et al., 1971; Spooner and Fyfe, 1973; Bischoff and Dickson, 1975; Heath and Dymond, 1977; Corliss et al., 1979, Edmond et al., 1979). Mn-rich crusts have also been recovered from active ridges and are inferred to have formed in the vicinity of hydrothermal discharge areas (Scott et al., 1974; Moore and Vogt, 1976; Corliss et al., 1978; Hoffert et al., 1978). The source of the trace elements in the metalliferous deposits is generally not clear. They may be derived from seawater by adsorption onto the precipitates or crusts, or from hydrothermal solutions which have leached them from the basalts. Pb, however, can be used as a geochemical tracer because of the known isotopic compositional differences between oceanic basalts and seawater. Isotopic investigations of Pb in ferruginous sediments from the East Pacific have shown that it has been derived partly or mostly from a basaltic source (Bender et al., 1971; Dasch et al., 1971; Dymond et al., 1973). In the present study, Pb isotopic analyses have been made of a suite of metalliferous sediments (nontronite, Mn-oxide crust, Mn-Fe-oxide mud), pelagic sediments, and basalts from the Galapagos mounds area. The main purposes of the Pb study were to determine the source or sources of Pb in the ... Dataset North Atlantic PANGAEA - Data Publisher for Earth & Environmental Science Galapagos Pacific Indian Fyfe ENVELOPE(155.167,155.167,-82.533,-82.533) ENVELOPE(-86.410000,-86.090000,1.613200,0.533300) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
70-506 70-506B 70-506C 70-506G 70-507B 70-507D 70-507F 70-508B 70-509B 70-510 Deep Sea Drilling Project DRILL Drilling/drill rig DSDP Glomar Challenger Leg70 NOAA and MMS Marine Minerals Geochemical Database NOAA-MMS North Pacific North Pacific/MOUND |
spellingShingle |
70-506 70-506B 70-506C 70-506G 70-507B 70-507D 70-507F 70-508B 70-509B 70-510 Deep Sea Drilling Project DRILL Drilling/drill rig DSDP Glomar Challenger Leg70 NOAA and MMS Marine Minerals Geochemical Database NOAA-MMS North Pacific North Pacific/MOUND Barrett, T J Lead and strontium isotopic composition of some metalliferous and pelagic sediments and basalts at DSDP Leg 70 Holes |
topic_facet |
70-506 70-506B 70-506C 70-506G 70-507B 70-507D 70-507F 70-508B 70-509B 70-510 Deep Sea Drilling Project DRILL Drilling/drill rig DSDP Glomar Challenger Leg70 NOAA and MMS Marine Minerals Geochemical Database NOAA-MMS North Pacific North Pacific/MOUND |
description |
In recent years, metalliferous sediments have been discovered overlying newly generated oceanic crust in the East Pacific, North Atlantic, Indian Ocean, Red Sea, Gulf of Aden, and elsewhere (e.g., Boström, 1973; Lalou et al., 1977; Bischoff, 1969; Boström and Fisher, 1971; Cann et al., 1977, respectively). Such material has also been recovered by drilling from sediments lying upon older oceanic crust (Boström et al., 1972, 1976; Horowitz and Cronan, 1976). Hydrothermal circulation of seawater at a spreading ridge results in the leaching of Fe, Mn, and possibly other elements from the basaltic volcanic layer and their transport and discharge into ocean bottom waters, whereupon fine-grained Fe-Mn-rich precipitates form and settle into the ambient sediment (cf. Corliss, 1971; Dasch et al., 1971; Spooner and Fyfe, 1973; Bischoff and Dickson, 1975; Heath and Dymond, 1977; Corliss et al., 1979, Edmond et al., 1979). Mn-rich crusts have also been recovered from active ridges and are inferred to have formed in the vicinity of hydrothermal discharge areas (Scott et al., 1974; Moore and Vogt, 1976; Corliss et al., 1978; Hoffert et al., 1978). The source of the trace elements in the metalliferous deposits is generally not clear. They may be derived from seawater by adsorption onto the precipitates or crusts, or from hydrothermal solutions which have leached them from the basalts. Pb, however, can be used as a geochemical tracer because of the known isotopic compositional differences between oceanic basalts and seawater. Isotopic investigations of Pb in ferruginous sediments from the East Pacific have shown that it has been derived partly or mostly from a basaltic source (Bender et al., 1971; Dasch et al., 1971; Dymond et al., 1973). In the present study, Pb isotopic analyses have been made of a suite of metalliferous sediments (nontronite, Mn-oxide crust, Mn-Fe-oxide mud), pelagic sediments, and basalts from the Galapagos mounds area. The main purposes of the Pb study were to determine the source or sources of Pb in the ... |
format |
Dataset |
author |
Barrett, T J |
author_facet |
Barrett, T J |
author_sort |
Barrett, T J |
title |
Lead and strontium isotopic composition of some metalliferous and pelagic sediments and basalts at DSDP Leg 70 Holes |
title_short |
Lead and strontium isotopic composition of some metalliferous and pelagic sediments and basalts at DSDP Leg 70 Holes |
title_full |
Lead and strontium isotopic composition of some metalliferous and pelagic sediments and basalts at DSDP Leg 70 Holes |
title_fullStr |
Lead and strontium isotopic composition of some metalliferous and pelagic sediments and basalts at DSDP Leg 70 Holes |
title_full_unstemmed |
Lead and strontium isotopic composition of some metalliferous and pelagic sediments and basalts at DSDP Leg 70 Holes |
title_sort |
lead and strontium isotopic composition of some metalliferous and pelagic sediments and basalts at dsdp leg 70 holes |
publisher |
PANGAEA |
publishDate |
1983 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.816125 https://doi.org/10.1594/PANGAEA.816125 |
op_coverage |
MEDIAN LATITUDE: 0.802839 * MEDIAN LONGITUDE: -86.166890 * SOUTH-BOUND LATITUDE: 0.533300 * WEST-BOUND LONGITUDE: -86.410000 * NORTH-BOUND LATITUDE: 1.613200 * EAST-BOUND LONGITUDE: -86.090000 * DATE/TIME START: 1979-11-15T00:00:00 * DATE/TIME END: 1979-11-29T00:00:00 |
long_lat |
ENVELOPE(155.167,155.167,-82.533,-82.533) ENVELOPE(-86.410000,-86.090000,1.613200,0.533300) |
geographic |
Galapagos Pacific Indian Fyfe |
geographic_facet |
Galapagos Pacific Indian Fyfe |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Supplement to: Barrett, T J (1983): Lead and strontium isotopic composition of some metalliferous and pelagic sediments and basalts from the Galapagos Mounds area, Deep Sea Drilling Project Leg 70. In: Honnorez, J; Von Herzen, RP; et al. (eds.), Initial Reports of the Deep Sea Drilling Project (U.S. Govt. Printing Office), 70, 325-332, https://doi.org/10.2973/dsdp.proc.70.117.1983 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.816125 https://doi.org/10.1594/PANGAEA.816125 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.816125 https://doi.org/10.2973/dsdp.proc.70.117.1983 |
_version_ |
1766136968081571840 |