reef trap

views updated May 08 2018

reef trap Stratigraphic oil or gas trap produced by porous reef limestones (reservoir rock) covered by impermeable strata. Porosity of limestones depends on post-depositional diagenetic changes. A reef trap may also host lead and zinc mineralization in material deposited from migrating brines. Compare ANTICLINAL TRAP; FAULT TRAP; STRATIGRAPHIC TRAP; STRUCTURAL TRAP; and UNCONFORMITY TRAP.

A Dictionary of Earth Sciences AILSA ALLABY and MICHAEL ALLABY

reef trap

views updated May 23 2018

reef trap A stratigraphic oil or gas trap produced by porous reef limestones (the reservoir rock) covered by impermeable strata.

A Dictionary of Ecology MICHAEL ALLABY

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