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The AAPG/Datapages Combined Publications Database

AAPG Bulletin


Volume: 49 (1965)

Issue: 3. (March)

First Page: 362

Last Page: 363

Title: O18--O16 Ratios of Evaporitic Dolomite from the Mississippian Charles Formation and Their Significance to the Dolomite Problem: ABSTRACT

Author(s): Jon N. Weber

Article Type: Meeting abstract


End_Page 362------------------------------

Samples of grey-buff, hard and brittle, cryptocrystalline evaporitic dolomite from the Charles Formation of southern Saskatchewan have an average ^dgrO18 value of +0.64 per mil relative to the PDB standard. Compared to normal marine calcite limestones of the same age (^dgrO18 = -6.21, standard deviation = 0.89%), the dolomite is depleted in O16 to the extent of 6.85 per mil. This result does not preclude a primary chemical origin for the dolomite as do the isotopic data of Degens and Epstein (Geochim. Cosmochim. Acta, 28, 23, 1964).

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Copyright 1997 American Association of Petroleum Geologists