(Table 1) Gas molecules, isotopic composition and delta Deuterium in DSDP Holes 95-603D and 95-613

Methane is the major hydrocarbon gas measured in Vacutainer samples from Holes 603D and 613 ( C1/sumCn > 0.999). In Hole 613 the concentration of this dry hydrocarbon gas is highest (7.4 x 10 **5 ppm max.) in the upper 60 to 120 m, then decreases erratically to low trace levels by 261 m sub-botto...

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Bibliographic Details
Main Authors: Whiticar, Michael J, Faber, Eckhard
Format: Dataset
Language:English
Published: PANGAEA 1987
Subjects:
95-603D
95-613
C1/(C2+C3) hydrocarbon ratio
C1/total hydrocarbon ratio
Deep Sea Drilling Project
DEPTH
sediment/rock
DRILL
Drilling/drill rig
DSDP
DSDP/ODP/IODP sample designation
Elevation of event
Ethane
Event label
Glomar Challenger
Latitude of event
Leg95
Longitude of event
Methane
North Atlantic/CONT RISE
North Atlantic/RIDGE
Number
Sample code/label
δ13C
δ Deuterium
water
North Atlantic
Online Access:https://doi.pangaea.de/10.1594/PANGAEA.788516
https://doi.org/10.1594/PANGAEA.788516
id ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.788516
record_format openpolar
spelling ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.788516 2023-05-15T17:31:21+02:00 (Table 1) Gas molecules, isotopic composition and delta Deuterium in DSDP Holes 95-603D and 95-613 Whiticar, Michael J Faber, Eckhard MEDIAN LATITUDE: 38.635400 * MEDIAN LONGITUDE: -71.273650 * SOUTH-BOUND LATITUDE: 38.499800 * WEST-BOUND LONGITUDE: -72.523800 * NORTH-BOUND LATITUDE: 38.771000 * EAST-BOUND LONGITUDE: -70.023500 * DATE/TIME START: 1983-09-01T00:00:00 * DATE/TIME END: 1983-09-17T00:00:00 * MINIMUM DEPTH, sediment/rock: 68.8 m * MAXIMUM DEPTH, sediment/rock: 342.1 m 1987-09-12 text/tab-separated-values, 120 data points https://doi.pangaea.de/10.1594/PANGAEA.788516 https://doi.org/10.1594/PANGAEA.788516 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.788516 https://doi.org/10.1594/PANGAEA.788516 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Whiticar, Michael J; Faber, Eckhard (1987): Carbon and hydrogen isotopes in gas samples from Leg 95, Holes 603D and 613. In: Poag, CW; Watts, AB; et al. (eds.), Initial Reports of the Deep Sea Drilling Project, Washington (U.S. Govt. Printing Office), 95, 647-650, https://doi.org/10.2973/dsdp.proc.95.127.1987 95-603D 95-613 C1/(C2+C3) hydrocarbon ratio C1/total hydrocarbon ratio Deep Sea Drilling Project DEPTH sediment/rock DRILL Drilling/drill rig DSDP DSDP/ODP/IODP sample designation Elevation of event Ethane Event label Glomar Challenger Latitude of event Leg95 Longitude of event Methane North Atlantic/CONT RISE North Atlantic/RIDGE Number Sample code/label δ13C δ Deuterium water Dataset 1987 ftpangaea https://doi.org/10.1594/PANGAEA.788516 https://doi.org/10.2973/dsdp.proc.95.127.1987 2023-01-20T08:55:14Z Methane is the major hydrocarbon gas measured in Vacutainer samples from Holes 603D and 613 ( C1/sumCn > 0.999). In Hole 613 the concentration of this dry hydrocarbon gas is highest (7.4 x 10 **5 ppm max.) in the upper 60 to 120 m, then decreases erratically to low trace levels by 261 m sub-bottom (lower Pliocene). No gas accumulations were observed in older sediments. Methane from both holes is strongly depleted in both 13C (d13C, - 75 to -85 per mil) and deuterium (D/H, - 175 to -262 per mil), indicating the biogenic origin of the methane. The C and H isotopic compositions support methanogenesis via the CO2-reduction pathway; this is also corroborated by the dissolved-sulfate and alkalinity minima at these depths. The relationship between D/H of the methane and coexisting interstitial water from Site 613 further show the methanogenesis to be primarily by CO2 reduction. Dataset North Atlantic PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(-72.523800,-70.023500,38.771000,38.499800)
institution Open Polar
collection PANGAEA - Data Publisher for Earth & Environmental Science
op_collection_id ftpangaea
language English
topic 95-603D
95-613
C1/(C2+C3) hydrocarbon ratio
C1/total hydrocarbon ratio
Deep Sea Drilling Project
DEPTH
sediment/rock
DRILL
Drilling/drill rig
DSDP
DSDP/ODP/IODP sample designation
Elevation of event
Ethane
Event label
Glomar Challenger
Latitude of event
Leg95
Longitude of event
Methane
North Atlantic/CONT RISE
North Atlantic/RIDGE
Number
Sample code/label
δ13C
δ Deuterium
water
spellingShingle 95-603D
95-613
C1/(C2+C3) hydrocarbon ratio
C1/total hydrocarbon ratio
Deep Sea Drilling Project
DEPTH
sediment/rock
DRILL
Drilling/drill rig
DSDP
DSDP/ODP/IODP sample designation
Elevation of event
Ethane
Event label
Glomar Challenger
Latitude of event
Leg95
Longitude of event
Methane
North Atlantic/CONT RISE
North Atlantic/RIDGE
Number
Sample code/label
δ13C
δ Deuterium
water
Whiticar, Michael J
Faber, Eckhard
(Table 1) Gas molecules, isotopic composition and delta Deuterium in DSDP Holes 95-603D and 95-613
topic_facet 95-603D
95-613
C1/(C2+C3) hydrocarbon ratio
C1/total hydrocarbon ratio
Deep Sea Drilling Project
DEPTH
sediment/rock
DRILL
Drilling/drill rig
DSDP
DSDP/ODP/IODP sample designation
Elevation of event
Ethane
Event label
Glomar Challenger
Latitude of event
Leg95
Longitude of event
Methane
North Atlantic/CONT RISE
North Atlantic/RIDGE
Number
Sample code/label
δ13C
δ Deuterium
water
description Methane is the major hydrocarbon gas measured in Vacutainer samples from Holes 603D and 613 ( C1/sumCn > 0.999). In Hole 613 the concentration of this dry hydrocarbon gas is highest (7.4 x 10 **5 ppm max.) in the upper 60 to 120 m, then decreases erratically to low trace levels by 261 m sub-bottom (lower Pliocene). No gas accumulations were observed in older sediments. Methane from both holes is strongly depleted in both 13C (d13C, - 75 to -85 per mil) and deuterium (D/H, - 175 to -262 per mil), indicating the biogenic origin of the methane. The C and H isotopic compositions support methanogenesis via the CO2-reduction pathway; this is also corroborated by the dissolved-sulfate and alkalinity minima at these depths. The relationship between D/H of the methane and coexisting interstitial water from Site 613 further show the methanogenesis to be primarily by CO2 reduction.
format Dataset
author Whiticar, Michael J
Faber, Eckhard
author_facet Whiticar, Michael J
Faber, Eckhard
author_sort Whiticar, Michael J
title (Table 1) Gas molecules, isotopic composition and delta Deuterium in DSDP Holes 95-603D and 95-613
title_short (Table 1) Gas molecules, isotopic composition and delta Deuterium in DSDP Holes 95-603D and 95-613
title_full (Table 1) Gas molecules, isotopic composition and delta Deuterium in DSDP Holes 95-603D and 95-613
title_fullStr (Table 1) Gas molecules, isotopic composition and delta Deuterium in DSDP Holes 95-603D and 95-613
title_full_unstemmed (Table 1) Gas molecules, isotopic composition and delta Deuterium in DSDP Holes 95-603D and 95-613
title_sort (table 1) gas molecules, isotopic composition and delta deuterium in dsdp holes 95-603d and 95-613
publisher PANGAEA
publishDate 1987
url https://doi.pangaea.de/10.1594/PANGAEA.788516
https://doi.org/10.1594/PANGAEA.788516
op_coverage MEDIAN LATITUDE: 38.635400 * MEDIAN LONGITUDE: -71.273650 * SOUTH-BOUND LATITUDE: 38.499800 * WEST-BOUND LONGITUDE: -72.523800 * NORTH-BOUND LATITUDE: 38.771000 * EAST-BOUND LONGITUDE: -70.023500 * DATE/TIME START: 1983-09-01T00:00:00 * DATE/TIME END: 1983-09-17T00:00:00 * MINIMUM DEPTH, sediment/rock: 68.8 m * MAXIMUM DEPTH, sediment/rock: 342.1 m
long_lat ENVELOPE(-72.523800,-70.023500,38.771000,38.499800)
genre North Atlantic
genre_facet North Atlantic
op_source Supplement to: Whiticar, Michael J; Faber, Eckhard (1987): Carbon and hydrogen isotopes in gas samples from Leg 95, Holes 603D and 613. In: Poag, CW; Watts, AB; et al. (eds.), Initial Reports of the Deep Sea Drilling Project, Washington (U.S. Govt. Printing Office), 95, 647-650, https://doi.org/10.2973/dsdp.proc.95.127.1987
op_relation https://doi.pangaea.de/10.1594/PANGAEA.788516
https://doi.org/10.1594/PANGAEA.788516
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.788516
https://doi.org/10.2973/dsdp.proc.95.127.1987
_version_ 1766128877756743680

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