de.pangaea.dataset701230
und
dataset
PANGAEA
info@pangaea.de
https://www.pangaea.de/
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2026-07-15T20:24:20Z
https://doi.pangaea.de/10.1594/PANGAEA.701230
<gco:CharacterString>(Table 1) Carbon, oxygen and strontium isotopic composition of the rhodochrosite nodules from DSDP Sites 503A and 503B</gco:CharacterString>
1997-01-01
publication
https://doi.org/10.1594/PANGAEA.701230
Morad, S
https://orcid.org/0000-0002-8214-0896
information
author
Al-Aasm, Ihsan S
author
PANGAEA
info@pangaea.de
https://www.pangaea.de/
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publisher
tableDigital
Supplement to: Morad, S; Al-Aasm, Ihsan S (1997): Conditions of rhodochrosite-nodule formation in Neogene-Pleistocene deep-sea sediments: evidence from O, C and Sr isotopes. Sedimentary Geology, 114(1-4), 295-304, https://doi.org/10.1016/S0037-0738(97)00066-3
Calcic rhodochrosite occurs as nodules around burrows in late Neogene-early Pleistocene pelagic sediments of the Galapagos Ridge in the Guatemala Basin, eastern equatorial Pacific (DSDP Leg 68; Site 503). Growth was accomplished in the suboxic zone (d13C = -4.3 per mil to -1.3 per mil) at an estimated depth between ~30 and 70 cm beneath the seafloor. The rhodochrosites have 87Sr/86Sr ratios (0.708945–0.709073) that largely record the small-scale changes in seawater Sr-isotopic composition. The anomalous enrichment of the rhodochrosite in 18O isotopes (d18OPDB up to +6.4 per mil is attributed to the dissociation of gas hydrates.
completed
Morad, S
https://orcid.org/0000-0002-8214-0896
information
principalInvestigator
DSDP
Deep Sea Drilling Project
theme
<gco:CharacterString>PANGAEA Project List</gco:CharacterString>
1995-01-01
creation
PANGAEA
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copyright
copyright
CC-BY-3.0: Creative Commons Attribution 3.0 Unported
textTable
und
geoscientificInformation
-95.6368
-95.6368
4.0507
4.0507
1979-09-06T00:00:00
1979-09-06T00:00:00
17.6
164.6
DEPTH, sediment/rock
physicalMeasurement
m
m
Sample code/label
thematicClassification
DSDP/ODP/IODP sample designation
Sample type
thematicClassification
δ13C
physicalMeasurement
Mass spectrometer VG SIRA 12; with respect to PDB
‰ PDB
‰ PDB
δ18O
physicalMeasurement
Mass spectrometer VG SIRA 12; with respect to PDB
‰
‰
Strontium-87/Strontium-86 ratio
thematicClassification
Mass spectrometer Finnigan MAT 261
Age, dated
physicalMeasurement
Age, paleomagnetic
ka
ka
text/tab-separated-values
unknown
https://doi.pangaea.de/10.1594/PANGAEA.701230?format=textfile
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dataset
The data set was checked for completeness, correctness, and consistency of metainformation. Validity of used methods was checked and - if applicable - precision and range of data.
EVENT LABEL: 68-503 * LATITUDE: 4.050700 * LONGITUDE: -95.636800 * DATE/TIME: 1979-09-06T00:00:00 * ELEVATION: -3672.0 m * PENETRATION: 4.4 m * RECOVERY: 4.8 m * LOCATION: North Pacific/FLANK * CAMPAIGN: Leg68 * BASIS: Glomar Challenger * METHOD/DEVICE: Drilling/drill rig
1 cores; 4.4 m cored; 0 m drilled; 109.1 % recovery
1979-09-06T00:00:00