Stable isotopes and calcium carbonate at DSDP Holes 85-574 and 85-574A
Detailed stable isotopic and calcium carbonate records (with a sampling resolution of 3000 yr.) from the middle Miocene section of hydraulic piston corer (HPC) Hole 574A provide a sequence that records the major shift in the oxygen isotopic composition of the world's oceans that occurred at abo...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.803487 2023-05-15T13:42:10+02:00 Stable isotopes and calcium carbonate at DSDP Holes 85-574 and 85-574A Pisias, Nicklas G Shackleton, Nicholas J Hall, Michael A LATITUDE: 4.208700 * LONGITUDE: -133.330200 * DATE/TIME START: 1982-04-11T00:00:00 * DATE/TIME END: 1982-04-11T00:00:00 1985-12-04 application/zip, 2 datasets https://doi.pangaea.de/10.1594/PANGAEA.803487 https://doi.org/10.1594/PANGAEA.803487 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.803487 https://doi.org/10.1594/PANGAEA.803487 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Pisias, Nicklas G; Shackleton, Nicholas J; Hall, Michael A (1985): Stable isotope and calcium carbonate records from hydraulic piston cored Hole 574A: high-resolution records from the middle Miocene. In: Mayer, L; Theyer, E; et al. (eds.), Initial Reports of the Deep Sea Drilling Project, Washington (U.S. Govt. Printing Office), 85, 735-748, https://doi.org/10.2973/dsdp.proc.85.121.1985 Deep Sea Drilling Project DSDP Dataset 1985 ftpangaea https://doi.org/10.1594/PANGAEA.803487 https://doi.org/10.2973/dsdp.proc.85.121.1985 2023-01-20T07:32:48Z Detailed stable isotopic and calcium carbonate records (with a sampling resolution of 3000 yr.) from the middle Miocene section of hydraulic piston corer (HPC) Hole 574A provide a sequence that records the major shift in the oxygen isotopic composition of the world's oceans that occurred at about 14 Ma. The data suggest that this transition was rapid and spans about 30,000 yr. of sediment deposition. In intervals before and after the shift, the mean d18O values are characterized by a constant mean with a high degree of variability. The degree of variability in both the d18O and d13C records is comparable to that observed for the Pliocene and earliest Pleistocene and does not show a significant change before or after the major shift in the d18O record. Whereas the oxygen isotopic record is characterized by relatively stable mean values before and after the middle Miocene event, the d13C record shows a number of significant offsets in the mean value separated by intervals of high-frequency variations. Time and frequency domain analysis of all records from Hole 574A indicate that the frequency components shown to be related to orbital changes in the Pleistocene record are also present in the middle Miocene. The high variability observed in the Site 574 isotopic records places important constraints on models describing the role of formation of the Antarctic ice sheet during the middle Miocene climatic transitions. Thus, HPC Hole 574A provides a valuable sequence for detailed study of climatic variability during an important time in the Earth's history, although we cannot provide a definitive explanation of the major oxygen isotopic event of the middle Miocene. Dataset Antarc* Antarctic Ice Sheet PANGAEA - Data Publisher for Earth & Environmental Science Antarctic The Antarctic ENVELOPE(-133.330200,-133.330200,4.208700,4.208700) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
Deep Sea Drilling Project DSDP |
spellingShingle |
Deep Sea Drilling Project DSDP Pisias, Nicklas G Shackleton, Nicholas J Hall, Michael A Stable isotopes and calcium carbonate at DSDP Holes 85-574 and 85-574A |
topic_facet |
Deep Sea Drilling Project DSDP |
description |
Detailed stable isotopic and calcium carbonate records (with a sampling resolution of 3000 yr.) from the middle Miocene section of hydraulic piston corer (HPC) Hole 574A provide a sequence that records the major shift in the oxygen isotopic composition of the world's oceans that occurred at about 14 Ma. The data suggest that this transition was rapid and spans about 30,000 yr. of sediment deposition. In intervals before and after the shift, the mean d18O values are characterized by a constant mean with a high degree of variability. The degree of variability in both the d18O and d13C records is comparable to that observed for the Pliocene and earliest Pleistocene and does not show a significant change before or after the major shift in the d18O record. Whereas the oxygen isotopic record is characterized by relatively stable mean values before and after the middle Miocene event, the d13C record shows a number of significant offsets in the mean value separated by intervals of high-frequency variations. Time and frequency domain analysis of all records from Hole 574A indicate that the frequency components shown to be related to orbital changes in the Pleistocene record are also present in the middle Miocene. The high variability observed in the Site 574 isotopic records places important constraints on models describing the role of formation of the Antarctic ice sheet during the middle Miocene climatic transitions. Thus, HPC Hole 574A provides a valuable sequence for detailed study of climatic variability during an important time in the Earth's history, although we cannot provide a definitive explanation of the major oxygen isotopic event of the middle Miocene. |
format |
Dataset |
author |
Pisias, Nicklas G Shackleton, Nicholas J Hall, Michael A |
author_facet |
Pisias, Nicklas G Shackleton, Nicholas J Hall, Michael A |
author_sort |
Pisias, Nicklas G |
title |
Stable isotopes and calcium carbonate at DSDP Holes 85-574 and 85-574A |
title_short |
Stable isotopes and calcium carbonate at DSDP Holes 85-574 and 85-574A |
title_full |
Stable isotopes and calcium carbonate at DSDP Holes 85-574 and 85-574A |
title_fullStr |
Stable isotopes and calcium carbonate at DSDP Holes 85-574 and 85-574A |
title_full_unstemmed |
Stable isotopes and calcium carbonate at DSDP Holes 85-574 and 85-574A |
title_sort |
stable isotopes and calcium carbonate at dsdp holes 85-574 and 85-574a |
publisher |
PANGAEA |
publishDate |
1985 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.803487 https://doi.org/10.1594/PANGAEA.803487 |
op_coverage |
LATITUDE: 4.208700 * LONGITUDE: -133.330200 * DATE/TIME START: 1982-04-11T00:00:00 * DATE/TIME END: 1982-04-11T00:00:00 |
long_lat |
ENVELOPE(-133.330200,-133.330200,4.208700,4.208700) |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic Ice Sheet |
genre_facet |
Antarc* Antarctic Ice Sheet |
op_source |
Supplement to: Pisias, Nicklas G; Shackleton, Nicholas J; Hall, Michael A (1985): Stable isotope and calcium carbonate records from hydraulic piston cored Hole 574A: high-resolution records from the middle Miocene. In: Mayer, L; Theyer, E; et al. (eds.), Initial Reports of the Deep Sea Drilling Project, Washington (U.S. Govt. Printing Office), 85, 735-748, https://doi.org/10.2973/dsdp.proc.85.121.1985 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.803487 https://doi.org/10.1594/PANGAEA.803487 |
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.803487 https://doi.org/10.2973/dsdp.proc.85.121.1985 |
_version_ |
1766164366211678208 |