where the fault steps east. This zone transfers the displacement along the fault from one segment to another. Within this zone there is very dense faulting. Along the southern segment, footwall bed dips define a structural high symmetrically disposed about the point of maximum throw. A prominent hanging wall feature of the southern segment is the Moab Anticline, with a crestal collapse graben accommodated by an array of normal faults. The Moab Anticline is an asymmetric fold with a wavelength of approximately 1 km, an amplitude of 350 m and a length of over 10 km. The internal geometry of the Moab fault zone is complex in terms of the numbers of slip zones, the partitioning of throw between them and the distribution of fault rocks, all of which vary over the fault surface. One study by Berg and Skar5 analyzes the arrangement of fractures in damage zones of the Bartlett segment of the Moab Fault. The Bartlett fault consist of a fault core surrounded by damage zones in the footwall and hanging wall. The fault core consists of a variety of fault rocks and entrained bodies of clastic host rocks, which indicate variation in strain intensity and deformation style. Berg and Skar suggest that the most important cause for asymmetric strain distribution is the development of the hanging wall syncline and the resulting asymmetric stress pattern expected to exist during fault propagation. Sedimentation and Stratigraphy The sedimentation of the Moab area was primarily influenced by marine or lacustrine incursions into the margins of major Jurassic ergs. This area consists of a heterogeneous series of dominantly clastic sedimentary rocks. The basal Navajo Sandstone to top Entrada Sandstone interval is separated into six sedimentologically distinct stratigraphic units: the Navajo Sandstone, the Page Sandstone, the Dewey Bridge and Slick Rock members of the Entrada Sandstone, the Moab Tongue, and the Curtis Formation. The stratigraphy of the outcropping fault zone can be divided into three lithological groups: mudstone-dominated, mixed mudstone-sandstone, and sandstone-rich sequences. The mixed mudstone-sandstone sequences include interbedded fluvial and aeolian sandstones and floodplain/lacustrine mudstones and siltstones. Sandstone-rich intervals are primarily aeolian in origin. Distribution of Clays and Cements Distinctive types of veining, calcite cementation and iron oxide reduction exist adjacent to the fault, especially in Jurassic Navajo and Entrada sandstones. Calcite, barite, ankerite, and pyrite cemented veins are found in immediate proximity of the fault. The presence and amount of clays