Stable isotope ratios of interstitial fluids from ODP Leg 110 sites
Delta18O values of pore waters from the northern Barbados accretionary prism range from -0.3 to -3.6 per mil and reflect pervasive reaction of volcanic ash to form smectite within the sedimentary sequence and continued low temperature alteration of basalt in the underlying ocean crust with the overp...
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1990
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.711469 2024-09-09T19:57:58+00:00 Stable isotope ratios of interstitial fluids from ODP Leg 110 sites Vrolijk, Peter J Chambers, Steven R Gieskes, Joris M O´Neil, J R MEDIAN LATITUDE: 15.532900 * MEDIAN LONGITUDE: -58.714458 * SOUTH-BOUND LATITUDE: 15.525800 * WEST-BOUND LONGITUDE: -58.851500 * NORTH-BOUND LATITUDE: 15.540000 * EAST-BOUND LONGITUDE: -58.641000 * DATE/TIME START: 1986-06-28T12:45:00 * DATE/TIME END: 1986-08-14T00:30:00 1990 application/zip, 6 datasets https://doi.pangaea.de/10.1594/PANGAEA.711469 https://doi.org/10.1594/PANGAEA.711469 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.711469 https://doi.org/10.1594/PANGAEA.711469 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess Supplement to: Vrolijk, Peter J; Chambers, Steven R; Gieskes, Joris M; O´Neil, J R (1990): Stable isotope ratios of interstitial fluids from the northern Barbados Accretionary Prism, ODP Leg 110. In: Moore, JC; Mascle, A; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 110, 189-205, https://doi.org/10.2973/odp.proc.sr.110.137.1990 110-671B 110-671C 110-672A 110-673B 110-674A 110-675A 110-676A DRILL Drilling/drill rig Joides Resolution Leg110 North Atlantic Ocean Ocean Drilling Program ODP dataset publication series 1990 ftpangaea https://doi.org/10.1594/PANGAEA.71146910.2973/odp.proc.sr.110.137.1990 2024-08-21T00:02:25Z Delta18O values of pore waters from the northern Barbados accretionary prism range from -0.3 to -3.6 per mil and reflect pervasive reaction of volcanic ash to form smectite within the sedimentary sequence and continued low temperature alteration of basalt in the underlying ocean crust with the overprint of diffusive exchange between water in the sediment pores and the open ocean. Delta D values of pore waters in sediments sampled seaward of the deformation front drop from +5 per mil at the sediment surface to -6 per mil at the deepest levels sampled. These changes may also be related to alteration processes but remain largely enigmatic. Sediment deformation caused by impingement of the Caribbean plate on the Atlantic plate has instigated migration of chemically and isotopically distinct fluid along faults and coarse-grained sedimentary beds; delta18O values of pore waters are also locally affected by thrust stacking which increases diffusive pathlengths and possibly modifies diagenetic reaction rates in Pleistocene sediments. Migrating fluids are distinguished by anomalous delta18O values that are as much as 1 per mil higher than those of surrounding fluids. Uncertainties in hydrogen isotope fractionation resulting from processes occurring under these conditions hinder identification of the hydrogen isotope composition of expelled fluid. Stable isotope analyses of pore waters help constrain the fluid migration history of the accretionary prism by limiting the source of fluids, the paths along which fluid flows, and the timing of faulting and subsequent fluid flow. Other/Unknown Material North Atlantic PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(-58.851500,-58.641000,15.540000,15.525800) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
110-671B 110-671C 110-672A 110-673B 110-674A 110-675A 110-676A DRILL Drilling/drill rig Joides Resolution Leg110 North Atlantic Ocean Ocean Drilling Program ODP |
spellingShingle |
110-671B 110-671C 110-672A 110-673B 110-674A 110-675A 110-676A DRILL Drilling/drill rig Joides Resolution Leg110 North Atlantic Ocean Ocean Drilling Program ODP Vrolijk, Peter J Chambers, Steven R Gieskes, Joris M O´Neil, J R Stable isotope ratios of interstitial fluids from ODP Leg 110 sites |
topic_facet |
110-671B 110-671C 110-672A 110-673B 110-674A 110-675A 110-676A DRILL Drilling/drill rig Joides Resolution Leg110 North Atlantic Ocean Ocean Drilling Program ODP |
description |
Delta18O values of pore waters from the northern Barbados accretionary prism range from -0.3 to -3.6 per mil and reflect pervasive reaction of volcanic ash to form smectite within the sedimentary sequence and continued low temperature alteration of basalt in the underlying ocean crust with the overprint of diffusive exchange between water in the sediment pores and the open ocean. Delta D values of pore waters in sediments sampled seaward of the deformation front drop from +5 per mil at the sediment surface to -6 per mil at the deepest levels sampled. These changes may also be related to alteration processes but remain largely enigmatic. Sediment deformation caused by impingement of the Caribbean plate on the Atlantic plate has instigated migration of chemically and isotopically distinct fluid along faults and coarse-grained sedimentary beds; delta18O values of pore waters are also locally affected by thrust stacking which increases diffusive pathlengths and possibly modifies diagenetic reaction rates in Pleistocene sediments. Migrating fluids are distinguished by anomalous delta18O values that are as much as 1 per mil higher than those of surrounding fluids. Uncertainties in hydrogen isotope fractionation resulting from processes occurring under these conditions hinder identification of the hydrogen isotope composition of expelled fluid. Stable isotope analyses of pore waters help constrain the fluid migration history of the accretionary prism by limiting the source of fluids, the paths along which fluid flows, and the timing of faulting and subsequent fluid flow. |
format |
Other/Unknown Material |
author |
Vrolijk, Peter J Chambers, Steven R Gieskes, Joris M O´Neil, J R |
author_facet |
Vrolijk, Peter J Chambers, Steven R Gieskes, Joris M O´Neil, J R |
author_sort |
Vrolijk, Peter J |
title |
Stable isotope ratios of interstitial fluids from ODP Leg 110 sites |
title_short |
Stable isotope ratios of interstitial fluids from ODP Leg 110 sites |
title_full |
Stable isotope ratios of interstitial fluids from ODP Leg 110 sites |
title_fullStr |
Stable isotope ratios of interstitial fluids from ODP Leg 110 sites |
title_full_unstemmed |
Stable isotope ratios of interstitial fluids from ODP Leg 110 sites |
title_sort |
stable isotope ratios of interstitial fluids from odp leg 110 sites |
publisher |
PANGAEA |
publishDate |
1990 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.711469 https://doi.org/10.1594/PANGAEA.711469 |
op_coverage |
MEDIAN LATITUDE: 15.532900 * MEDIAN LONGITUDE: -58.714458 * SOUTH-BOUND LATITUDE: 15.525800 * WEST-BOUND LONGITUDE: -58.851500 * NORTH-BOUND LATITUDE: 15.540000 * EAST-BOUND LONGITUDE: -58.641000 * DATE/TIME START: 1986-06-28T12:45:00 * DATE/TIME END: 1986-08-14T00:30:00 |
long_lat |
ENVELOPE(-58.851500,-58.641000,15.540000,15.525800) |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Supplement to: Vrolijk, Peter J; Chambers, Steven R; Gieskes, Joris M; O´Neil, J R (1990): Stable isotope ratios of interstitial fluids from the northern Barbados Accretionary Prism, ODP Leg 110. In: Moore, JC; Mascle, A; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 110, 189-205, https://doi.org/10.2973/odp.proc.sr.110.137.1990 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.711469 https://doi.org/10.1594/PANGAEA.711469 |
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.71146910.2973/odp.proc.sr.110.137.1990 |
_version_ |
1809928927543558144 |