Sand fraction, carbonate and organic carbon contents of ODP Hole 175-1085A
Site 1085 is located on the continental rise of southwest Africa at a water depth of 1713 m off the mouth of the Orange River in the Cape Basin. The site is part of the suite of locations drilled during Leg 175 on the Africa margin to reconstruct the onset and evolution of the elevated biological pr...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.735231 2024-09-15T18:36:32+00:00 Sand fraction, carbonate and organic carbon contents of ODP Hole 175-1085A Diester-Haass, Lieselotte Meyers, Philip A Vidal, Laurence Wefer, Gerold LATITUDE: -29.374410 * LONGITUDE: 13.990110 * DATE/TIME START: 1997-09-26T00:15:00 * DATE/TIME END: 1997-09-29T18:15:00 2001 application/zip, 3 datasets https://doi.pangaea.de/10.1594/PANGAEA.735231 https://doi.org/10.1594/PANGAEA.735231 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.735231 https://doi.org/10.1594/PANGAEA.735231 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess Supplement to: Diester-Haass, Lieselotte; Meyers, Philip A; Vidal, Laurence; Wefer, Gerold (2001): Data report: Sand fraction, carbonate, and organic carbon contents of late Miocene sediments from Site 1085, Middle Cape Basin. In: Wefer, G., Berger, W.H., and Richter, C. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 175, 1-23, https://doi.org/10.2973/odp.proc.sr.175.222.2001 175-1085A Benguela Current South Atlantic Ocean DRILL Drilling/drill rig Joides Resolution Leg175 Ocean Drilling Program ODP dataset publication series 2001 ftpangaea https://doi.org/10.1594/PANGAEA.73523110.2973/odp.proc.sr.175.222.2001 2024-07-24T02:31:20Z Site 1085 is located on the continental rise of southwest Africa at a water depth of 1713 m off the mouth of the Orange River in the Cape Basin. The site is part of the suite of locations drilled during Leg 175 on the Africa margin to reconstruct the onset and evolution of the elevated biological productivity associated with the Benguela Current upwelling system (Wefer, Berger, Richter, et al., 1998, doi:10.2973/odp.proc.ir.175.1998). Three sediment samples were collected per section from Cores 170-1085A-28H through 45X (251-419 mbsf) to provide a survey of the sediment record of paleoproductivity from the middle late Miocene to the early Pliocene (~8.7-4.7 Ma), which is a period that includes the postulated northward migration and intensification of the Benguela Current and the establishment of modern circulation off southwest Africa (Siesser, 1980; Diester-Haass et al., 1992; Berger et al., 1998). Core 170-1085A-30H (270-279 mbsf) had essentially no recovery; this coring gap was filled with samples from Cores 170-1085B-29H and 30H (261-280 mbsf). The results of measurements of multiple paleoproductivity proxies are summarized in this report. Included in these proxies are the radiolarian, foraminiferal, and echinoderm components of the sand-sized sediment fraction. Opal skeletons of radiolarians (no diatoms were found) relate to paleoproductivity and water mass chemistry (Summerhayes et al., 1995, doi:10.1016/0079-6611(95)00008-5; Lange and Berger, 1993, doi:10.2973/odp.proc.sr.130.011.1993; Nelson et al., 1995, doi:10.1029/95GB01070). The accumulation rates of benthic foraminifers are useful proxies for paleoproductivity (Herguera and Berger, 1991, doi:10.1130/0091-7613(1991)019<1173:PFBFAG>2.3.CO;2; Nees, 1997, doi:10.1016/S0031-0182(97)00012-6; Schmiedl and Mackensen, 1997, doi:10.1016/S0031-0182(96)00137-X) because these fauna subsist on organic matter exported from the photic zone. Echinoderms also depend mainly on food supply from the photic zone (Gooday and Turley, 1990), and their accumulation ... Other/Unknown Material South Atlantic Ocean PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(13.990110,13.990110,-29.374410,-29.374410) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
175-1085A Benguela Current South Atlantic Ocean DRILL Drilling/drill rig Joides Resolution Leg175 Ocean Drilling Program ODP |
spellingShingle |
175-1085A Benguela Current South Atlantic Ocean DRILL Drilling/drill rig Joides Resolution Leg175 Ocean Drilling Program ODP Diester-Haass, Lieselotte Meyers, Philip A Vidal, Laurence Wefer, Gerold Sand fraction, carbonate and organic carbon contents of ODP Hole 175-1085A |
topic_facet |
175-1085A Benguela Current South Atlantic Ocean DRILL Drilling/drill rig Joides Resolution Leg175 Ocean Drilling Program ODP |
description |
Site 1085 is located on the continental rise of southwest Africa at a water depth of 1713 m off the mouth of the Orange River in the Cape Basin. The site is part of the suite of locations drilled during Leg 175 on the Africa margin to reconstruct the onset and evolution of the elevated biological productivity associated with the Benguela Current upwelling system (Wefer, Berger, Richter, et al., 1998, doi:10.2973/odp.proc.ir.175.1998). Three sediment samples were collected per section from Cores 170-1085A-28H through 45X (251-419 mbsf) to provide a survey of the sediment record of paleoproductivity from the middle late Miocene to the early Pliocene (~8.7-4.7 Ma), which is a period that includes the postulated northward migration and intensification of the Benguela Current and the establishment of modern circulation off southwest Africa (Siesser, 1980; Diester-Haass et al., 1992; Berger et al., 1998). Core 170-1085A-30H (270-279 mbsf) had essentially no recovery; this coring gap was filled with samples from Cores 170-1085B-29H and 30H (261-280 mbsf). The results of measurements of multiple paleoproductivity proxies are summarized in this report. Included in these proxies are the radiolarian, foraminiferal, and echinoderm components of the sand-sized sediment fraction. Opal skeletons of radiolarians (no diatoms were found) relate to paleoproductivity and water mass chemistry (Summerhayes et al., 1995, doi:10.1016/0079-6611(95)00008-5; Lange and Berger, 1993, doi:10.2973/odp.proc.sr.130.011.1993; Nelson et al., 1995, doi:10.1029/95GB01070). The accumulation rates of benthic foraminifers are useful proxies for paleoproductivity (Herguera and Berger, 1991, doi:10.1130/0091-7613(1991)019<1173:PFBFAG>2.3.CO;2; Nees, 1997, doi:10.1016/S0031-0182(97)00012-6; Schmiedl and Mackensen, 1997, doi:10.1016/S0031-0182(96)00137-X) because these fauna subsist on organic matter exported from the photic zone. Echinoderms also depend mainly on food supply from the photic zone (Gooday and Turley, 1990), and their accumulation ... |
format |
Other/Unknown Material |
author |
Diester-Haass, Lieselotte Meyers, Philip A Vidal, Laurence Wefer, Gerold |
author_facet |
Diester-Haass, Lieselotte Meyers, Philip A Vidal, Laurence Wefer, Gerold |
author_sort |
Diester-Haass, Lieselotte |
title |
Sand fraction, carbonate and organic carbon contents of ODP Hole 175-1085A |
title_short |
Sand fraction, carbonate and organic carbon contents of ODP Hole 175-1085A |
title_full |
Sand fraction, carbonate and organic carbon contents of ODP Hole 175-1085A |
title_fullStr |
Sand fraction, carbonate and organic carbon contents of ODP Hole 175-1085A |
title_full_unstemmed |
Sand fraction, carbonate and organic carbon contents of ODP Hole 175-1085A |
title_sort |
sand fraction, carbonate and organic carbon contents of odp hole 175-1085a |
publisher |
PANGAEA |
publishDate |
2001 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.735231 https://doi.org/10.1594/PANGAEA.735231 |
op_coverage |
LATITUDE: -29.374410 * LONGITUDE: 13.990110 * DATE/TIME START: 1997-09-26T00:15:00 * DATE/TIME END: 1997-09-29T18:15:00 |
long_lat |
ENVELOPE(13.990110,13.990110,-29.374410,-29.374410) |
genre |
South Atlantic Ocean |
genre_facet |
South Atlantic Ocean |
op_source |
Supplement to: Diester-Haass, Lieselotte; Meyers, Philip A; Vidal, Laurence; Wefer, Gerold (2001): Data report: Sand fraction, carbonate, and organic carbon contents of late Miocene sediments from Site 1085, Middle Cape Basin. In: Wefer, G., Berger, W.H., and Richter, C. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 175, 1-23, https://doi.org/10.2973/odp.proc.sr.175.222.2001 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.735231 https://doi.org/10.1594/PANGAEA.735231 |
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.73523110.2973/odp.proc.sr.175.222.2001 |
_version_ |
1810480197317689344 |