Modern marine dolomite cement in a north Jamaican fringing reef

Journal Article · Mon Jun 01 00:00:00 EDT 1987 · Geology; (United States)

DOI:https://doi.org/10.1130/0091-7613(1987)15<557:MMDCIA>2.0.CO;2· OSTI ID:5237241

Mitchell, J T; Land, L S; Miser, D E

Minor quantities of ordered dolomite (..delta../sup 18/O = +2.0 per thousand PDB; composition = Ca/sub 1.22/Mg/sub 0.78/ (CO/sub 3/)/sub 2/) have formed from near-normal seawater in a subtidal hardground as part of a modern fringing coral reef. Crystals 5 ..mu..m in diameter precipitated within the past 1.8 ka in the form of syntaxial fringes on Mg-calcite marine cements and skeletal allochems. The crystals have a fine modulated microstructure and c reflections, both apparently formed during crystal growth

• OSTI ID: 5237241
• Journal Information: Geology; (United States), Vol. 15:6
• Country of Publication: United States
• Language: English

Related Subjects

58 GEOSCIENCES
JAMAICA
REEFS
AGE ESTIMATION
PETROGRAPHY
CALCITE
CARBON 14
CRYSTAL STRUCTURE
DOLOMITE
ISOTOPE DATING
MICROSTRUCTURE
ORIGIN
SEAWATER
ALKALINE EARTH METAL COMPOUNDS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CALCIUM CARBONATES
CALCIUM COMPOUNDS
CARBON COMPOUNDS
CARBON ISOTOPES
CARBONATE MINERALS
CARBONATES
DEVELOPING COUNTRIES
EVEN-EVEN NUCLEI
GEOLOGIC STRUCTURES
GREATER ANTILLES
HYDROGEN COMPOUNDS
ISLANDS
ISOTOPES
LIGHT NUCLEI
MAGNESIUM CARBONATES
MAGNESIUM COMPOUNDS
MINERALS
NUCLEI
OXYGEN COMPOUNDS
RADIOISOTOPES
WATER
WEST INDIES
YEARS LIVING RADIOISOTOPES
580300* - Mineralogy
Petrology
&amp; Rock Mechanics- (-1989)
580100 - Geology &amp; Hydrology- (-1989)