(Table 1) Age, porocity, density, mass accumulation rates and grain size of the eolian component of sediments from DSDP Leg 92
Eolian dust preserved in deep-sea sediments provides a record of atmospheric circulation throughout geologic time. This eolian component has been isolated to determine its mass accumulation rate (MAR) and grain size in post-middle Oligocene sediments from DSDP Sites 597 to 602, which lie along 19°S...
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1986
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.789710 2024-09-15T17:45:41+00:00 (Table 1) Age, porocity, density, mass accumulation rates and grain size of the eolian component of sediments from DSDP Leg 92 Bloomstine, Maurice K Rea, David K MEDIAN LATITUDE: -19.033911 * MEDIAN LONGITUDE: -119.842367 * SOUTH-BOUND LATITUDE: -19.451500 * WEST-BOUND LONGITUDE: -129.770500 * NORTH-BOUND LATITUDE: -18.806300 * EAST-BOUND LONGITUDE: -116.839500 * DATE/TIME START: 1983-03-02T00:00:00 * DATE/TIME END: 1983-03-26T00:00:00 * MINIMUM DEPTH, sediment/rock: 0.13 m * MAXIMUM DEPTH, sediment/rock: 50.98 m 1986 text/tab-separated-values, 1384 data points https://doi.pangaea.de/10.1594/PANGAEA.789710 https://doi.org/10.1594/PANGAEA.789710 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.789710 https://doi.org/10.1594/PANGAEA.789710 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess Supplement to: Bloomstine, Maurice K; Rea, David K (1986): Post-middle Oligocene Eolian deposition from the trade winds of the Southeast Pacific. In: Leinen, M; Rea DK; et al. (eds.), Initial Reports of the Deep Sea Drilling Project, Washington (U.S. Govt. Printing Office), 92, 331-340, https://doi.org/10.2973/dsdp.proc.92.114.1986 92-597 92-598 92-599 92-599B 92-600 92-600C 92-601 92-602A 92-602B Accumulation rate dust mass AGE Calculated after FOLK Coulter Counter (Beckman Coulter) Deep Sea Drilling Project Density dry bulk DEPTH sediment/rock DRILL Drilling/drill rig DSDP DSDP/ODP/IODP sample designation aeolian Elevation of event Event label Glomar Challenger Latitude of event Leg92 Longitude of event Median grain size Porosity Sample code/label Sedimentation rate see reference(s) South Pacific/CONT RISE South Pacific/PLATEAU South Pacific/TROUGH South Pacific Ocean dataset 1986 ftpangaea https://doi.org/10.1594/PANGAEA.78971010.2973/dsdp.proc.92.114.1986 2024-08-21T00:02:27Z Eolian dust preserved in deep-sea sediments provides a record of atmospheric circulation throughout geologic time. This eolian component has been isolated to determine its mass accumulation rate (MAR) and grain size in post-middle Oligocene sediments from DSDP Sites 597 to 602, which lie along 19°S on the East Pacific Rise. The rate of eolian deposition has been very low (about 2 to 3 mg/(cm**2 x 10**3 yr) and reasonably consistent at all the sites, except that the MAR of the eolian component at Site 597 increases to an average of about 8 mg/(cm**2 x 10**3 yr) between 17 and 19 Ma. Eolian grain size at Site 598 changes dramatically at 10.5 Ma from 7.2 phi in younger sediments to 8.2 phi in older material and may provide evidence of an intensification of zonal winds that took place in response to Antarctic ice formation just prior to that time. Pliocene to Pleistocene samples from Leg 92 show no evidence of the severalfold increase in dust accumulation and grain size recorded at Northern Hemisphere locations at the time corresponding to the onset of Northern Hemisphere glaciation. The low and constant flux of eolian material indicates that South America was consistently vegetated from post-middle Oligocene time to the present. Dataset Antarc* Antarctic PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(-129.770500,-116.839500,-18.806300,-19.451500) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
92-597 92-598 92-599 92-599B 92-600 92-600C 92-601 92-602A 92-602B Accumulation rate dust mass AGE Calculated after FOLK Coulter Counter (Beckman Coulter) Deep Sea Drilling Project Density dry bulk DEPTH sediment/rock DRILL Drilling/drill rig DSDP DSDP/ODP/IODP sample designation aeolian Elevation of event Event label Glomar Challenger Latitude of event Leg92 Longitude of event Median grain size Porosity Sample code/label Sedimentation rate see reference(s) South Pacific/CONT RISE South Pacific/PLATEAU South Pacific/TROUGH South Pacific Ocean |
spellingShingle |
92-597 92-598 92-599 92-599B 92-600 92-600C 92-601 92-602A 92-602B Accumulation rate dust mass AGE Calculated after FOLK Coulter Counter (Beckman Coulter) Deep Sea Drilling Project Density dry bulk DEPTH sediment/rock DRILL Drilling/drill rig DSDP DSDP/ODP/IODP sample designation aeolian Elevation of event Event label Glomar Challenger Latitude of event Leg92 Longitude of event Median grain size Porosity Sample code/label Sedimentation rate see reference(s) South Pacific/CONT RISE South Pacific/PLATEAU South Pacific/TROUGH South Pacific Ocean Bloomstine, Maurice K Rea, David K (Table 1) Age, porocity, density, mass accumulation rates and grain size of the eolian component of sediments from DSDP Leg 92 |
topic_facet |
92-597 92-598 92-599 92-599B 92-600 92-600C 92-601 92-602A 92-602B Accumulation rate dust mass AGE Calculated after FOLK Coulter Counter (Beckman Coulter) Deep Sea Drilling Project Density dry bulk DEPTH sediment/rock DRILL Drilling/drill rig DSDP DSDP/ODP/IODP sample designation aeolian Elevation of event Event label Glomar Challenger Latitude of event Leg92 Longitude of event Median grain size Porosity Sample code/label Sedimentation rate see reference(s) South Pacific/CONT RISE South Pacific/PLATEAU South Pacific/TROUGH South Pacific Ocean |
description |
Eolian dust preserved in deep-sea sediments provides a record of atmospheric circulation throughout geologic time. This eolian component has been isolated to determine its mass accumulation rate (MAR) and grain size in post-middle Oligocene sediments from DSDP Sites 597 to 602, which lie along 19°S on the East Pacific Rise. The rate of eolian deposition has been very low (about 2 to 3 mg/(cm**2 x 10**3 yr) and reasonably consistent at all the sites, except that the MAR of the eolian component at Site 597 increases to an average of about 8 mg/(cm**2 x 10**3 yr) between 17 and 19 Ma. Eolian grain size at Site 598 changes dramatically at 10.5 Ma from 7.2 phi in younger sediments to 8.2 phi in older material and may provide evidence of an intensification of zonal winds that took place in response to Antarctic ice formation just prior to that time. Pliocene to Pleistocene samples from Leg 92 show no evidence of the severalfold increase in dust accumulation and grain size recorded at Northern Hemisphere locations at the time corresponding to the onset of Northern Hemisphere glaciation. The low and constant flux of eolian material indicates that South America was consistently vegetated from post-middle Oligocene time to the present. |
format |
Dataset |
author |
Bloomstine, Maurice K Rea, David K |
author_facet |
Bloomstine, Maurice K Rea, David K |
author_sort |
Bloomstine, Maurice K |
title |
(Table 1) Age, porocity, density, mass accumulation rates and grain size of the eolian component of sediments from DSDP Leg 92 |
title_short |
(Table 1) Age, porocity, density, mass accumulation rates and grain size of the eolian component of sediments from DSDP Leg 92 |
title_full |
(Table 1) Age, porocity, density, mass accumulation rates and grain size of the eolian component of sediments from DSDP Leg 92 |
title_fullStr |
(Table 1) Age, porocity, density, mass accumulation rates and grain size of the eolian component of sediments from DSDP Leg 92 |
title_full_unstemmed |
(Table 1) Age, porocity, density, mass accumulation rates and grain size of the eolian component of sediments from DSDP Leg 92 |
title_sort |
(table 1) age, porocity, density, mass accumulation rates and grain size of the eolian component of sediments from dsdp leg 92 |
publisher |
PANGAEA |
publishDate |
1986 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.789710 https://doi.org/10.1594/PANGAEA.789710 |
op_coverage |
MEDIAN LATITUDE: -19.033911 * MEDIAN LONGITUDE: -119.842367 * SOUTH-BOUND LATITUDE: -19.451500 * WEST-BOUND LONGITUDE: -129.770500 * NORTH-BOUND LATITUDE: -18.806300 * EAST-BOUND LONGITUDE: -116.839500 * DATE/TIME START: 1983-03-02T00:00:00 * DATE/TIME END: 1983-03-26T00:00:00 * MINIMUM DEPTH, sediment/rock: 0.13 m * MAXIMUM DEPTH, sediment/rock: 50.98 m |
long_lat |
ENVELOPE(-129.770500,-116.839500,-18.806300,-19.451500) |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
Supplement to: Bloomstine, Maurice K; Rea, David K (1986): Post-middle Oligocene Eolian deposition from the trade winds of the Southeast Pacific. In: Leinen, M; Rea DK; et al. (eds.), Initial Reports of the Deep Sea Drilling Project, Washington (U.S. Govt. Printing Office), 92, 331-340, https://doi.org/10.2973/dsdp.proc.92.114.1986 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.789710 https://doi.org/10.1594/PANGAEA.789710 |
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.78971010.2973/dsdp.proc.92.114.1986 |
_version_ |
1810493573926223872 |