(Table 1) Subsidence and calcite accumulation for South Pacific DSDP drill sites
Patterns of crustal subsidence in the southeast Pacific Ocean reflect the complex tectonic history of that region. A plot of the depth-time history of calcite accumulation recorded at DSDP sites beneath the oligotrophic subtropical gyre allows us to define the Neogene history of the calcite compensa...
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1986
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.789439 2023-05-15T13:55:15+02:00 (Table 1) Subsidence and calcite accumulation for South Pacific DSDP drill sites Rea, David K Leinen, Margaret W MEDIAN LATITUDE: -15.343125 * MEDIAN LONGITUDE: -111.552763 * SOUTH-BOUND LATITUDE: -19.451500 * WEST-BOUND LONGITUDE: -134.266700 * NORTH-BOUND LATITUDE: -9.006700 * EAST-BOUND LONGITUDE: -81.904000 * DATE/TIME START: 1969-11-24T00:00:00 * DATE/TIME END: 1983-03-25T00:00:00 * MINIMUM DEPTH, sediment/rock: 3443 m * MAXIMUM DEPTH, sediment/rock: 4889 m 1986-10-05 text/tab-separated-values, 31 data points https://doi.pangaea.de/10.1594/PANGAEA.789439 https://doi.org/10.1594/PANGAEA.789439 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.789439 https://doi.org/10.1594/PANGAEA.789439 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Rea, David K; Leinen, Margaret W (1986): Crustal subsidence and calcite deposition in the South Pacific Ocean. In: Leinen, M; Rea DK; et al. (eds.), Initial Reports of the Deep Sea Drilling Project, Washington (U.S. Govt. Printing Office), 92, 299-303, https://doi.org/10.2973/dsdp.proc.92.112.1986 34-319 34-320 34-321 8-75 92-597 92-598 92-599 92-601 AGE Age model optional Calculated see reference(s) Deep Sea Drilling Project DEPTH sediment/rock DRILL Drilling/drill rig DSDP Elevation of event Event label Factor Glomar Challenger Latitude of event Leg34 Leg8 Leg92 Longitude of event Sediment thickness South Pacific South Pacific/BASIN South Pacific/CONT RISE South Pacific/PLATEAU Dataset 1986 ftpangaea https://doi.org/10.1594/PANGAEA.789439 https://doi.org/10.2973/dsdp.proc.92.112.1986 2023-01-20T08:55:21Z Patterns of crustal subsidence in the southeast Pacific Ocean reflect the complex tectonic history of that region. A plot of the depth-time history of calcite accumulation recorded at DSDP sites beneath the oligotrophic subtropical gyre allows us to define the Neogene history of the calcite compensation depth (CCD) and the lysocline. The CCD shoaled from 4200 to 3700 m between 24 and 20 Ma and then deepened to near the present depth of 4100 m by 5 Ma. The lysocline became distinctly separate from the CCD between 20 and 17 Ma. By 14 Ma, the lysocline rose to 600 m above the CCD, where it has remained until the present. We interpret these data to reflect an increase in the volume of Antarctic Bottom Water beginning at 18 or 19 Ma and reaching a steady-state condition by 14 Ma, the time of rapid ice build-up in Antarctica. Dataset Antarc* Antarctic Antarctica PANGAEA - Data Publisher for Earth & Environmental Science Antarctic Pacific ENVELOPE(-134.266700,-81.904000,-9.006700,-19.451500) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
34-319 34-320 34-321 8-75 92-597 92-598 92-599 92-601 AGE Age model optional Calculated see reference(s) Deep Sea Drilling Project DEPTH sediment/rock DRILL Drilling/drill rig DSDP Elevation of event Event label Factor Glomar Challenger Latitude of event Leg34 Leg8 Leg92 Longitude of event Sediment thickness South Pacific South Pacific/BASIN South Pacific/CONT RISE South Pacific/PLATEAU |
spellingShingle |
34-319 34-320 34-321 8-75 92-597 92-598 92-599 92-601 AGE Age model optional Calculated see reference(s) Deep Sea Drilling Project DEPTH sediment/rock DRILL Drilling/drill rig DSDP Elevation of event Event label Factor Glomar Challenger Latitude of event Leg34 Leg8 Leg92 Longitude of event Sediment thickness South Pacific South Pacific/BASIN South Pacific/CONT RISE South Pacific/PLATEAU Rea, David K Leinen, Margaret W (Table 1) Subsidence and calcite accumulation for South Pacific DSDP drill sites |
topic_facet |
34-319 34-320 34-321 8-75 92-597 92-598 92-599 92-601 AGE Age model optional Calculated see reference(s) Deep Sea Drilling Project DEPTH sediment/rock DRILL Drilling/drill rig DSDP Elevation of event Event label Factor Glomar Challenger Latitude of event Leg34 Leg8 Leg92 Longitude of event Sediment thickness South Pacific South Pacific/BASIN South Pacific/CONT RISE South Pacific/PLATEAU |
description |
Patterns of crustal subsidence in the southeast Pacific Ocean reflect the complex tectonic history of that region. A plot of the depth-time history of calcite accumulation recorded at DSDP sites beneath the oligotrophic subtropical gyre allows us to define the Neogene history of the calcite compensation depth (CCD) and the lysocline. The CCD shoaled from 4200 to 3700 m between 24 and 20 Ma and then deepened to near the present depth of 4100 m by 5 Ma. The lysocline became distinctly separate from the CCD between 20 and 17 Ma. By 14 Ma, the lysocline rose to 600 m above the CCD, where it has remained until the present. We interpret these data to reflect an increase in the volume of Antarctic Bottom Water beginning at 18 or 19 Ma and reaching a steady-state condition by 14 Ma, the time of rapid ice build-up in Antarctica. |
format |
Dataset |
author |
Rea, David K Leinen, Margaret W |
author_facet |
Rea, David K Leinen, Margaret W |
author_sort |
Rea, David K |
title |
(Table 1) Subsidence and calcite accumulation for South Pacific DSDP drill sites |
title_short |
(Table 1) Subsidence and calcite accumulation for South Pacific DSDP drill sites |
title_full |
(Table 1) Subsidence and calcite accumulation for South Pacific DSDP drill sites |
title_fullStr |
(Table 1) Subsidence and calcite accumulation for South Pacific DSDP drill sites |
title_full_unstemmed |
(Table 1) Subsidence and calcite accumulation for South Pacific DSDP drill sites |
title_sort |
(table 1) subsidence and calcite accumulation for south pacific dsdp drill sites |
publisher |
PANGAEA |
publishDate |
1986 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.789439 https://doi.org/10.1594/PANGAEA.789439 |
op_coverage |
MEDIAN LATITUDE: -15.343125 * MEDIAN LONGITUDE: -111.552763 * SOUTH-BOUND LATITUDE: -19.451500 * WEST-BOUND LONGITUDE: -134.266700 * NORTH-BOUND LATITUDE: -9.006700 * EAST-BOUND LONGITUDE: -81.904000 * DATE/TIME START: 1969-11-24T00:00:00 * DATE/TIME END: 1983-03-25T00:00:00 * MINIMUM DEPTH, sediment/rock: 3443 m * MAXIMUM DEPTH, sediment/rock: 4889 m |
long_lat |
ENVELOPE(-134.266700,-81.904000,-9.006700,-19.451500) |
geographic |
Antarctic Pacific |
geographic_facet |
Antarctic Pacific |
genre |
Antarc* Antarctic Antarctica |
genre_facet |
Antarc* Antarctic Antarctica |
op_source |
Supplement to: Rea, David K; Leinen, Margaret W (1986): Crustal subsidence and calcite deposition in the South Pacific Ocean. In: Leinen, M; Rea DK; et al. (eds.), Initial Reports of the Deep Sea Drilling Project, Washington (U.S. Govt. Printing Office), 92, 299-303, https://doi.org/10.2973/dsdp.proc.92.112.1986 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.789439 https://doi.org/10.1594/PANGAEA.789439 |
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.789439 https://doi.org/10.2973/dsdp.proc.92.112.1986 |
_version_ |
1766261622434693120 |