Gypsum dehydration, agent of salt diapirism

Conference · Fri Sep 01 00:00:00 EDT 1989 · AAPG Bulletin (American Association of Petroleum Geologists); (USA)

OSTI ID:5141368

Kupfer, D H ^[1]

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1. Louisiana State Univ., Baton Rouge (USA)

One to 10% anhydrite is present in Gulf Coast domal salt, probably deposited as primary gypsum. Because the conversion to anhydrite occurs during burial and after the salt has recrystallized enough to become impermeable, the water of dehydration does not escape. This geopressured water will greatly increase the mobility of salt and aid diapirism. The depths and temperatures that cause diapirism may be similar to those that cause gypsum dehydration, but none of the four parameters is well understood. Gypsum dehydration may join differential load, temperature, depth, and thickness as a factor strongly influencing diapirism.

• OSTI ID: 5141368
• Report Number(s): CONF-8910221-; CODEN: AABUD
• Journal Information: AAPG Bulletin (American Association of Petroleum Geologists); (USA), Vol. 73:9; Conference: Gulf Coast Association of Geological Societies and Gulf Coast Section of SEPM meeting, Corpus Christi, TX (USA), 25-27 Oct 1989; ISSN 0149-1423
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
GULF OF MEXICO
SALT DEPOSITS
ANHYDRITE
DEHYDRATION
GYPSUM
ALKALINE EARTH METAL COMPOUNDS
ATLANTIC OCEAN
CALCIUM COMPOUNDS
CALCIUM SULFATES
CARIBBEAN SEA
GEOLOGIC DEPOSITS
MINERALS
OXYGEN COMPOUNDS
SEAS
SULFATE MINERALS
SULFATES
SULFUR COMPOUNDS
SURFACE WATERS
020200* - Petroleum- Reserves
Geology
& Exploration