OXYGEN AND CARBON ISOTOPE RATIOS IN COEXISTING CALCITES AND DOLOMITES FROM RECENT AND ANCIENT SEDIMENTS
Journal Article
·
· Geochimica et Cosmochimica Acta (England)
The O/sup 18//O/sup 16/ and C/sup 13//C/sup 12/ ratios of coexisting sediment ary dolomites and calcium carbonates from a variety of environments, modes of formation, and geological ages were measured. The data reflect the processes of dolomitization of calcium carbonates and their subsequent history. Dolomites usually have delta O/sup 18/ values characteristic of marine calcium carbonates or values of diagenetically altered marine limestones. Invariably the delta O/sup 18/ of dolomite are the same or greater than that of the coexisting calcite. This is in accordance with previously postulated mechanisms based on isotope measurements of hydrothermal and of laboratory synthesized cogenetic calcites and dolomites. The carbon isotope values of the measured carbonates are usually within the range found for marine limestones. (auth)
- Research Organization:
- California Inst. of Tech., Pasadena
- NSA Number:
- NSA-18-010268
- OSTI ID:
- 4083952
- Journal Information:
- Geochimica et Cosmochimica Acta (England), Journal Name: Geochimica et Cosmochimica Acta (England) Vol. Vol: 28; ISSN GCACA
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
Similar Records
Shallow burial dolomitization of Mid-Cenozoic, cool-water, calcitic deep-shelf limestones, southern Australia
Calcite veins in northeastern Puente Hills, southern California
Dolomitization of the Madison Group, Wyoming and Utah overthrust belt
Conference
·
Thu Feb 28 23:00:00 EST 1991
· AAPG Bulletin (American Association of Petroleum Geologists); (United States)
·
OSTI ID:5676977
Calcite veins in northeastern Puente Hills, southern California
Conference
·
Mon Mar 31 23:00:00 EST 1986
· Am. Assoc. Pet. Geol., Bull.; (United States)
·
OSTI ID:6987366
Dolomitization of the Madison Group, Wyoming and Utah overthrust belt
Journal Article
·
Sat Aug 01 00:00:00 EDT 1987
· AAPG (Am. Assoc. Pet. Geol.) Bull.; (United States)
·
OSTI ID:5753357