Sedimentology and Geochemistry of Dolostones
Sedimentology and Geochemistry of Dolostones - The need has always existed for understanding the processes of dolomitization and the origin of thick sequences of dolostones. This need becomes even more critical because pre-Cretaceous dolostones commonly host economically important deposits of natural resources and fossil fuels. This publication was derived from an SEPM Research Symposium held in Raleigh, North Carolina, on September, 1986. The volume attempts to answer the questions: How have the concepts and models presented in other publications been applied to sedimentary dolomites, Have we gained new insights and awareness into the processes of dolomitization, and many others. The principal message of this publication is, whereas enormous progress has been made in dolostone research since 1965, the subject is ripe for further study.
Sediment Composition and Precipitation of Dolomite and Pyrite in the Neogene Monterey and Sisquoc Formations, Santa Maria Basin Area, California
Published:January 01, 1988
John S. Compton, 1988. "Sediment Composition and Precipitation of Dolomite and Pyrite in the Neogene Monterey and Sisquoc Formations, Santa Maria Basin Area, California", Sedimentology and Geochemistry of Dolostones, Vijai Shukla, Paul A. Baker
Download citation file:
A 1.2-km-thick section of the Miocene Monterey and overlying Pliocene Sisquoc formations in the Santa Maria basin area of California contains highly variable amounts of biogenic silica, detrital clay and silt, organic matter, carbonate, pyrite, and francolite. Organic-matter diagenesis resulted in the early precipitation of dolomite, pyrite, and francolite, and the concentration of trace metals. Dolostone horizons occur 1 to 10 m apart and consist of 50 to 95 weight percent pore-filling dolomite. The dolomite is low in Fe and Mn and contains an average of 0.8 to 5.3 mole percent excess Ca. Dolomite composition is related to texture...