Oxygen, carbon and strontium isotope data for DSDP Hole 35-323
A downhole decrease in 18O, Mg(2+) and K+, an increase in Ca(2+) and a low 87Sr/86Sr ratio of 0.7067 in the pore fluids of DSDP site 323 were caused principally by the alteration of volcanic material. These chemical and isotopic patterns were produced by the alteration, in order of decreasing import...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.706890 2023-05-15T13:42:09+02:00 Oxygen, carbon and strontium isotope data for DSDP Hole 35-323 Lawrence, James R Drever, James I Anderson, Thomas F Brueckner, H K LATITUDE: -63.680700 * LONGITUDE: -97.994800 * DATE/TIME START: 1974-03-07T00:00:00 * DATE/TIME END: 1974-03-07T00:00:00 1979-11-03 application/zip, 4 datasets https://doi.pangaea.de/10.1594/PANGAEA.706890 https://doi.org/10.1594/PANGAEA.706890 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.706890 https://doi.org/10.1594/PANGAEA.706890 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Lawrence, James R; Drever, James I; Anderson, Thomas F; Brueckner, H K (1979): Importance of alteration of volcanic material in the sediments of Deep Sea Drilling Site 323: chemistry, 18O/16O and 87Sr/86Sr. Geochimica et Cosmochimica Acta, 43(4), 573-588, https://doi.org/10.1016/0016-7037(79)90166-2 35-323 Antarctic Ocean/PLAIN Deep Sea Drilling Project DRILL Drilling/drill rig DSDP Glomar Challenger Leg35 Dataset 1979 ftpangaea https://doi.org/10.1594/PANGAEA.706890 https://doi.org/10.1016/0016-7037(79)90166-2 2023-01-20T07:31:15Z A downhole decrease in 18O, Mg(2+) and K+, an increase in Ca(2+) and a low 87Sr/86Sr ratio of 0.7067 in the pore fluids of DSDP site 323 were caused principally by the alteration of volcanic material. These chemical and isotopic patterns were produced by the alteration, in order of decreasing importance of: a 60-m thick basal layer of volcanic ash; the underlying basalts; and igneous components in the 640-m thick upper sequence composed largely of terrigenous material. A significant portion of the alteration of the ash in the basal sequence must have occurred before the deposition of the upper sediments, perhaps under the influence of advecting solutions. The rest of the alteration occurred during the deposition of the thick upper sediments. Mass balance considerations and the low d18O values of most of the alteration products suggest that much of the later alteration occurred progressively over the last 13 Myr. The principal alteration products were smectite, potassium feldspar, clinoptilolite and calcite. Dataset Antarc* Antarctic Antarctic Ocean PANGAEA - Data Publisher for Earth & Environmental Science Antarctic Antarctic Ocean ENVELOPE(-97.994800,-97.994800,-63.680700,-63.680700) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
35-323 Antarctic Ocean/PLAIN Deep Sea Drilling Project DRILL Drilling/drill rig DSDP Glomar Challenger Leg35 |
spellingShingle |
35-323 Antarctic Ocean/PLAIN Deep Sea Drilling Project DRILL Drilling/drill rig DSDP Glomar Challenger Leg35 Lawrence, James R Drever, James I Anderson, Thomas F Brueckner, H K Oxygen, carbon and strontium isotope data for DSDP Hole 35-323 |
topic_facet |
35-323 Antarctic Ocean/PLAIN Deep Sea Drilling Project DRILL Drilling/drill rig DSDP Glomar Challenger Leg35 |
description |
A downhole decrease in 18O, Mg(2+) and K+, an increase in Ca(2+) and a low 87Sr/86Sr ratio of 0.7067 in the pore fluids of DSDP site 323 were caused principally by the alteration of volcanic material. These chemical and isotopic patterns were produced by the alteration, in order of decreasing importance of: a 60-m thick basal layer of volcanic ash; the underlying basalts; and igneous components in the 640-m thick upper sequence composed largely of terrigenous material. A significant portion of the alteration of the ash in the basal sequence must have occurred before the deposition of the upper sediments, perhaps under the influence of advecting solutions. The rest of the alteration occurred during the deposition of the thick upper sediments. Mass balance considerations and the low d18O values of most of the alteration products suggest that much of the later alteration occurred progressively over the last 13 Myr. The principal alteration products were smectite, potassium feldspar, clinoptilolite and calcite. |
format |
Dataset |
author |
Lawrence, James R Drever, James I Anderson, Thomas F Brueckner, H K |
author_facet |
Lawrence, James R Drever, James I Anderson, Thomas F Brueckner, H K |
author_sort |
Lawrence, James R |
title |
Oxygen, carbon and strontium isotope data for DSDP Hole 35-323 |
title_short |
Oxygen, carbon and strontium isotope data for DSDP Hole 35-323 |
title_full |
Oxygen, carbon and strontium isotope data for DSDP Hole 35-323 |
title_fullStr |
Oxygen, carbon and strontium isotope data for DSDP Hole 35-323 |
title_full_unstemmed |
Oxygen, carbon and strontium isotope data for DSDP Hole 35-323 |
title_sort |
oxygen, carbon and strontium isotope data for dsdp hole 35-323 |
publisher |
PANGAEA |
publishDate |
1979 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.706890 https://doi.org/10.1594/PANGAEA.706890 |
op_coverage |
LATITUDE: -63.680700 * LONGITUDE: -97.994800 * DATE/TIME START: 1974-03-07T00:00:00 * DATE/TIME END: 1974-03-07T00:00:00 |
long_lat |
ENVELOPE(-97.994800,-97.994800,-63.680700,-63.680700) |
geographic |
Antarctic Antarctic Ocean |
geographic_facet |
Antarctic Antarctic Ocean |
genre |
Antarc* Antarctic Antarctic Ocean |
genre_facet |
Antarc* Antarctic Antarctic Ocean |
op_source |
Supplement to: Lawrence, James R; Drever, James I; Anderson, Thomas F; Brueckner, H K (1979): Importance of alteration of volcanic material in the sediments of Deep Sea Drilling Site 323: chemistry, 18O/16O and 87Sr/86Sr. Geochimica et Cosmochimica Acta, 43(4), 573-588, https://doi.org/10.1016/0016-7037(79)90166-2 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.706890 https://doi.org/10.1594/PANGAEA.706890 |
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.706890 https://doi.org/10.1016/0016-7037(79)90166-2 |
_version_ |
1766163399948894208 |