--> Abstract: Salt-Related Fault Families and Fault Welds in the Northern Gulf of Mexico, by M. G. Rowan and B. D. Trudgill; #90937 (1998).
[First Hit]

Datapages, Inc.Print this page

Abstract: Salt-Related Previous HitFaultNext Hit Families and Previous HitFaultNext Hit Welds in the Northern Gulf of Mexico

ROWAN, MARK G. and BRUCE D. TRUDGILL, University of Colorado at Boulder

We present and illustrate a new classification for salt-related faults and Previous HitfaultNext Hit welds in the Gulf of Mexico that is based on the three-dimensional geometry of the faults, deformed strata, and associated salt. Families of extensional faults comprise symmetric arrays (peripheral, crestal, keystone) and asym-metric arrays, where the dominant direction of Previous HitfaultNext Hit dip is basinward (roller, ramp, shale detachment), landward (counter-regional), or variable (flap, rollover). We also illustrate contractional Previous HitfaultNext Hit families (toe-thrust, break-thrust) and strike-slip families (lateral, tear). Finally, various Previous HitfaultNext Hit welds (primary, roho, counter-regional, bowl, thrust, wrench) are surfaces representing evacuated salt bodies along which there has been significant slip.

Groups of Previous HitfaultNext Hit families and Previous HitfaultNext Hit welds are kinematically and genetically linked. Linked Previous HitfaultNext Hit systems may contain extensional, contractional, strike-slip, salt, salt weld, and Previous HitfaultNext Hit weld components. Extensional Previous HitfaultNext Hit families are formed by basinward translation, subsidence into salt, or folding. Those that accommodate lateral translation may be balanced by salt extrusion and/or contractional Previous HitfaultNext Hit families. Strike-slip Previous HitfaultNext Hit families bound or segment areas with different magnitudes of down-slope movement. These linked Previous HitfaultTop systems are directly related to five types of salt systems: autochthonous, stepped counter-regional, roho, salt-stock canopy, and salt nappe.

AAPG Search and Discovery Article #90937©1998 AAPG Annual Convention and Exhibition, Salt Lake City, Utah