Development and fabric relationships of anhydrite in Detroit River Group sour zone, Ogemaw County, Michigan

Conference · Fri Aug 01 04:00:00 EDT 1986 · Am. Assoc. Pet. Geol., Bull.; (United States)

OSTI ID:7041643

Park, S G

The study of diagenetic events within the Devonian Detroit River Group sour zone carbonates reveals several stages of anhydrite development: (1) massive, bedded anhydrite; (2) nodular anhydrite; (3) pore-filling anhydrite; and (4) postcompactional laths. The massive, bedded anhydrite was deposited as subaqueous gypsum. The nodular anhydrite developed in early stages of shallow burial diagenesis. Abundance of nodules decreases vertically, away from the subaqueous, massive anhydrite deposits. These anhydrite nodules, also originally gypsum, grew displacively within sabkha carbonate muds. Nodular anhydrite is visible in hand samples as individuals or as a network of reticulate ovate patches. Within pelletal micrites, dolomicrites, and oolitic packstones, abundant solution vugs have been greatly or entirely reduced by middle to late diagenetic precipitation of a meshwork of individual crystals or singular crystals of primary anhydrite. Euhedral, randomly oriented anhydrite laths are also present but are not precipitated within macropore spaces. These laths, which reveal a postcompactional origin, are often abundant and form a decussate pattern easily seen in hand sample.

• Research Organization: Western Michigan Univ., Kalamazoo
• OSTI ID: 7041643
• Report Number(s): CONF-8610158-
• Conference Information: Journal Name: Am. Assoc. Pet. Geol., Bull.; (United States) Journal Volume: 70:8
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020200* -- Petroleum-- Reserves
Geology
& Exploration
ALKALINE EARTH METAL COMPOUNDS
ANHYDRITE
CALCIUM COMPOUNDS
CALCIUM SULFATES
CARBONATE ROCKS
DEVONIAN PERIOD
DIAGENESIS
FEDERAL REGION V
GEOLOGIC AGES
GEOLOGIC FORMATIONS
MICHIGAN
MINERALS
NORTH AMERICA
OXYGEN COMPOUNDS
PALEOZOIC ERA
RESERVOIR ROCK
ROCKS
SEDIMENTARY ROCKS
SULFATE MINERALS
SULFATES
SULFUR COMPOUNDS
USA