Archive · collection · 1998
Oxygen isotope composition of clinoptilolites
Listed in PANGAEA and DataCite — shown once because both records carry DOI 10.1594/pangaea.711486
Oxygen isotope ratios were obtained from authigenic clinoptilolites from Barbados Accretionary Complex, Yamato Basin, and Exmouth Plateau sediments (ODP Sites 672, 797, and 762) in order to investigate the isotopic fractionation between clinoptilolite and pore water at early diagenetic stages and low temperatures.
Description
Dehydrated clinoptilolites display isotopic ratios for the zeolite framework (delta 18Of) that extend from +18.7 per mil to +32.8 per mil (vs. SMOW).
In combination with associated pore water isotope data, the oxygen isotopic fractionation between clinoptilolite and pore fluids could be assessed in the temperature range from 25ºC to 40ºC. The resulting fractionation factors of 1.032 at 25ºC and 1.027 at 40ºC are in good agreement with the theoretically determined oxygen isotope fractionation between clinoptilolite and water. Calculations of isotopic temperatures illustrate that clinoptilolite formation occurred at relatively low temperatures of 17ºC to 29ºC in Barbados Ridge sediments and at 33ºC to 62ºC in the Yamato Basin.
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These data support a low-temperature origin of clinoptilolite and contradict the assumption that elevated temperatures are the main controlling factor for authigenic clinoptilolite formation. Increasing clinoptilolite delta18Of values with depth indicate that clinoptilolites which are now in the deeper parts of the zeolite-bearing intervals had either formed at lower temperatures (17-20ºC) or under closed system conditions.
Links
Where it is published
- Repository landing page doi.pangaea.de/10.1594/PANGAEA.711486 ↗
landing page · from DataCite
- DOI doi.org/10.1594/pangaea.711486 ↗
DOI / persistent id · from PANGAEA
Documentation and papers
- Creative Commons Attribution 3.0 Unported creativecommons.org/licenses/by/3.0/legalcode ↗
license · from DataCite
- IsSupplementTo 10.1016/s0012-821x(98)00097-1 doi.org/10.1016/s0012-821x(98)00097-1 ↗
publication · from DataCite
Catalogue records · 3
- OAI-PMH record ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=oai_dc&identifier=o… ↗
metadata API · from PANGAEA
- DataCite API api.datacite.org/dois/10.1594/pangaea.711486 ↗
metadata API · from DataCite
- DataCite Commons commons.datacite.org/doi.org/10.1594/pangaea.711486 ↗
catalogue entry · from DataCite
Topics
- From keywords
- Earth & Environmental Science
- Inferred from text
- Isotope geochemistry 75%
Provenance · 2 source records, 8 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| PANGAEA | oai:pangaea.de:doi:10.1594/PANGAEA.711486 | 15 d ago | JSON v1 |
| DataCite | 10.1594/pangaea.711486 | 15 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · PANGAEA | connector:pangaea@1.0.0 | |
| concepts[field].anzsrc:field:370303 | enrichment · DataCite | taxonomy-embedding@1.1.0 | title+keywords+description (75%) |
| concepts[field].local:field:earth-environmental | mapping · PANGAEA | connector:pangaea@1.0.0 | |
| description | source · PANGAEA | connector:pangaea@1.0.0 | /metadata/dc/description |
| license | source · PANGAEA | connector:pangaea@1.0.0 | /metadata/dc/rights |
| publication_date | source · PANGAEA | connector:pangaea@1.0.0 | |
| spatial | source · PANGAEA | connector:pangaea@1.0.0 | |
| title | source · PANGAEA | connector:pangaea@1.0.0 | /metadata/dc/title |