(Appendix A) Radiolarian abundances in ODP Hole 175-1084A
The changing composition of radiolarian faunas from late Neogene deep-sea sediments has been used in recent years as a proxy for changes in marine paleoproductivity. We examine radiolarian faunas, organic carbon content (TOC), opal and coarse-fraction components over the last 270,000 years in sedime...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.773654 2023-05-15T13:55:14+02:00 (Appendix A) Radiolarian abundances in ODP Hole 175-1084A Lazarus, David B Bittniok, Beatrice Diester-Haass, Lieselotte Billups, Katharina Ogawa, Yujiro Takahashi, Kozo Meyers, Philip A LATITUDE: -25.513880 * LONGITUDE: 13.027770 * DATE/TIME START: 1997-09-21T03:10:00 * DATE/TIME END: 1997-09-24T03:15:00 * MINIMUM DEPTH, sediment/rock: 0.69 m * MAXIMUM DEPTH, sediment/rock: 49.20 m 2008-01-09 text/tab-separated-values, 2976 data points https://doi.pangaea.de/10.1594/PANGAEA.773654 https://doi.org/10.1594/PANGAEA.773654 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.773654 https://doi.org/10.1594/PANGAEA.773654 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Lazarus, David B; Bittniok, Beatrice; Diester-Haass, Lieselotte; Billups, Katharina; Ogawa, Yujiro; Takahashi, Kozo; Meyers, Philip A (2008): Radiolarian and sedimentologic paleoproductivity proxies in late Pleistocene sediments of the Benguela Upwelling System, ODP Site 1084. Marine Micropaleontology, 68(3-4), 223-235, https://doi.org/10.1016/j.marmicro.2008.02.004 175-1084A Acanthosphaera corlocae Accumulation rate benthic foraminifera by number mass Acrosphaera murrayana Actinomma antarcticum Actinomma boreale Actinomma leptodermum Actinomma popofskii AGE Amphirhopalum ypsilon Antarctissa spp. Anthocyrtidium ophirense Anthocyrtidium zanguebaricum Arachnocorys circumtexta Benguela Current South Atlantic Ocean Botryocyrtis scutum Botryostrobus aquilonaris Botryostrobus auritus/australis Calcium carbonate Calculated Carbon organic total Carpocaniidae indeterminata Cladococcus sp. Cornutella profunda Counting >150 µm fraction Counting >45 µm fraction Cycladophora bicornis Cycladophora conica Cycladophora davisiana Cyrtopera laguncula DEPTH sediment/rock Dictiocoryne profunda Dictyophimus crisiae Dictyophimus infabricatus Didymocyrtis tetrathalamus DRILL Drilling/drill rig DSDP/ODP/IODP sample designation Element analyser CHNS-O Eucyrtidium acuminatum Eucyrtidium calvertense Eucyrtidium teuscheri group Heliodiscus asteriscus Dataset 2008 ftpangaea https://doi.org/10.1594/PANGAEA.773654 https://doi.org/10.1016/j.marmicro.2008.02.004 2023-01-20T08:53:03Z The changing composition of radiolarian faunas from late Neogene deep-sea sediments has been used in recent years as a proxy for changes in marine paleoproductivity. We examine radiolarian faunas, organic carbon content (TOC), opal and coarse-fraction components over the last 270,000 years in sediments from ODP Hole 1084A, drilled in a high productivity upwelling region within the Benguela Upwelling System off the west coast of Africa. Age control is provided by stable oxygen isotope measurements of benthic foraminifera. Prior research has established that late Pleistocene glacial intervals in this upwelling system generally had higher productivity than interglacials. The radiolarian WADE (water-depth ecology) paleoproductivity index correlates well with TOC and opal in these samples, and all three parameters change in synchrony with the benthic isotope curve over all but the MIS 5e–6 time interval. WADE inferred productivity is significantly higher in glacials than interglacials. We conclude that the WADE index is a useful proxy for paleoproductivity at this location, as are also opal and organic carbon accumulation rates. Carbonate and carbonate based indices such as the accumulation rate of benthic foraminifera (BFAR) by contrast do not correlate well either to productivity indices or to the glacial–interglacial cycle, and are interpreted to primarily reflect carbonate dissolution. Dataset Antarc* South Atlantic Ocean PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(13.027770,13.027770,-25.513880,-25.513880) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
175-1084A Acanthosphaera corlocae Accumulation rate benthic foraminifera by number mass Acrosphaera murrayana Actinomma antarcticum Actinomma boreale Actinomma leptodermum Actinomma popofskii AGE Amphirhopalum ypsilon Antarctissa spp. Anthocyrtidium ophirense Anthocyrtidium zanguebaricum Arachnocorys circumtexta Benguela Current South Atlantic Ocean Botryocyrtis scutum Botryostrobus aquilonaris Botryostrobus auritus/australis Calcium carbonate Calculated Carbon organic total Carpocaniidae indeterminata Cladococcus sp. Cornutella profunda Counting >150 µm fraction Counting >45 µm fraction Cycladophora bicornis Cycladophora conica Cycladophora davisiana Cyrtopera laguncula DEPTH sediment/rock Dictiocoryne profunda Dictyophimus crisiae Dictyophimus infabricatus Didymocyrtis tetrathalamus DRILL Drilling/drill rig DSDP/ODP/IODP sample designation Element analyser CHNS-O Eucyrtidium acuminatum Eucyrtidium calvertense Eucyrtidium teuscheri group Heliodiscus asteriscus |
spellingShingle |
175-1084A Acanthosphaera corlocae Accumulation rate benthic foraminifera by number mass Acrosphaera murrayana Actinomma antarcticum Actinomma boreale Actinomma leptodermum Actinomma popofskii AGE Amphirhopalum ypsilon Antarctissa spp. Anthocyrtidium ophirense Anthocyrtidium zanguebaricum Arachnocorys circumtexta Benguela Current South Atlantic Ocean Botryocyrtis scutum Botryostrobus aquilonaris Botryostrobus auritus/australis Calcium carbonate Calculated Carbon organic total Carpocaniidae indeterminata Cladococcus sp. Cornutella profunda Counting >150 µm fraction Counting >45 µm fraction Cycladophora bicornis Cycladophora conica Cycladophora davisiana Cyrtopera laguncula DEPTH sediment/rock Dictiocoryne profunda Dictyophimus crisiae Dictyophimus infabricatus Didymocyrtis tetrathalamus DRILL Drilling/drill rig DSDP/ODP/IODP sample designation Element analyser CHNS-O Eucyrtidium acuminatum Eucyrtidium calvertense Eucyrtidium teuscheri group Heliodiscus asteriscus Lazarus, David B Bittniok, Beatrice Diester-Haass, Lieselotte Billups, Katharina Ogawa, Yujiro Takahashi, Kozo Meyers, Philip A (Appendix A) Radiolarian abundances in ODP Hole 175-1084A |
topic_facet |
175-1084A Acanthosphaera corlocae Accumulation rate benthic foraminifera by number mass Acrosphaera murrayana Actinomma antarcticum Actinomma boreale Actinomma leptodermum Actinomma popofskii AGE Amphirhopalum ypsilon Antarctissa spp. Anthocyrtidium ophirense Anthocyrtidium zanguebaricum Arachnocorys circumtexta Benguela Current South Atlantic Ocean Botryocyrtis scutum Botryostrobus aquilonaris Botryostrobus auritus/australis Calcium carbonate Calculated Carbon organic total Carpocaniidae indeterminata Cladococcus sp. Cornutella profunda Counting >150 µm fraction Counting >45 µm fraction Cycladophora bicornis Cycladophora conica Cycladophora davisiana Cyrtopera laguncula DEPTH sediment/rock Dictiocoryne profunda Dictyophimus crisiae Dictyophimus infabricatus Didymocyrtis tetrathalamus DRILL Drilling/drill rig DSDP/ODP/IODP sample designation Element analyser CHNS-O Eucyrtidium acuminatum Eucyrtidium calvertense Eucyrtidium teuscheri group Heliodiscus asteriscus |
description |
The changing composition of radiolarian faunas from late Neogene deep-sea sediments has been used in recent years as a proxy for changes in marine paleoproductivity. We examine radiolarian faunas, organic carbon content (TOC), opal and coarse-fraction components over the last 270,000 years in sediments from ODP Hole 1084A, drilled in a high productivity upwelling region within the Benguela Upwelling System off the west coast of Africa. Age control is provided by stable oxygen isotope measurements of benthic foraminifera. Prior research has established that late Pleistocene glacial intervals in this upwelling system generally had higher productivity than interglacials. The radiolarian WADE (water-depth ecology) paleoproductivity index correlates well with TOC and opal in these samples, and all three parameters change in synchrony with the benthic isotope curve over all but the MIS 5e–6 time interval. WADE inferred productivity is significantly higher in glacials than interglacials. We conclude that the WADE index is a useful proxy for paleoproductivity at this location, as are also opal and organic carbon accumulation rates. Carbonate and carbonate based indices such as the accumulation rate of benthic foraminifera (BFAR) by contrast do not correlate well either to productivity indices or to the glacial–interglacial cycle, and are interpreted to primarily reflect carbonate dissolution. |
format |
Dataset |
author |
Lazarus, David B Bittniok, Beatrice Diester-Haass, Lieselotte Billups, Katharina Ogawa, Yujiro Takahashi, Kozo Meyers, Philip A |
author_facet |
Lazarus, David B Bittniok, Beatrice Diester-Haass, Lieselotte Billups, Katharina Ogawa, Yujiro Takahashi, Kozo Meyers, Philip A |
author_sort |
Lazarus, David B |
title |
(Appendix A) Radiolarian abundances in ODP Hole 175-1084A |
title_short |
(Appendix A) Radiolarian abundances in ODP Hole 175-1084A |
title_full |
(Appendix A) Radiolarian abundances in ODP Hole 175-1084A |
title_fullStr |
(Appendix A) Radiolarian abundances in ODP Hole 175-1084A |
title_full_unstemmed |
(Appendix A) Radiolarian abundances in ODP Hole 175-1084A |
title_sort |
(appendix a) radiolarian abundances in odp hole 175-1084a |
publisher |
PANGAEA |
publishDate |
2008 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.773654 https://doi.org/10.1594/PANGAEA.773654 |
op_coverage |
LATITUDE: -25.513880 * LONGITUDE: 13.027770 * DATE/TIME START: 1997-09-21T03:10:00 * DATE/TIME END: 1997-09-24T03:15:00 * MINIMUM DEPTH, sediment/rock: 0.69 m * MAXIMUM DEPTH, sediment/rock: 49.20 m |
long_lat |
ENVELOPE(13.027770,13.027770,-25.513880,-25.513880) |
genre |
Antarc* South Atlantic Ocean |
genre_facet |
Antarc* South Atlantic Ocean |
op_source |
Supplement to: Lazarus, David B; Bittniok, Beatrice; Diester-Haass, Lieselotte; Billups, Katharina; Ogawa, Yujiro; Takahashi, Kozo; Meyers, Philip A (2008): Radiolarian and sedimentologic paleoproductivity proxies in late Pleistocene sediments of the Benguela Upwelling System, ODP Site 1084. Marine Micropaleontology, 68(3-4), 223-235, https://doi.org/10.1016/j.marmicro.2008.02.004 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.773654 https://doi.org/10.1594/PANGAEA.773654 |
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.773654 https://doi.org/10.1016/j.marmicro.2008.02.004 |
_version_ |
1766261554935758848 |