Patterns of cementation along a Cenozoic normal fault: A record of paleoflow orientations

Abstract

Research Article| June 01, 1995 Patterns of cementation along a Cenozoic normal fault: A record of paleoflow orientations Peter S. Mozley; Peter S. Mozley 1Department of Geoscience, New Mexico Tech, Socorro, New Mexico 87801 Search for other works by this author on: GSW Google Scholar Laurel B. Goodwin Laurel B. Goodwin 1Department of Geoscience, New Mexico Tech, Socorro, New Mexico 87801 Search for other works by this author on: GSW Google Scholar Geology (1995) 23 (6): 539–542. https://doi.org/10.1130/0091-7613(1995)023<0539:POCAAC>2.3.CO;2 Article history first online: 02 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation Peter S. Mozley, Laurel B. Goodwin; Patterns of cementation along a Cenozoic normal fault: A record of paleoflow orientations. Geology 1995;; 23 (6): 539–542. doi: https://doi.org/10.1130/0091-7613(1995)023<0539:POCAAC>2.3.CO;2 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGeology Search Advanced Search Abstract The Sand Hill fault is a steeply dipping normal fault that cuts poorly consolidated sediments of the Albuquerque basin, New Mexico. The fault zone, which varies in width from ∼1 to 6 m, is selectively cemented by calcite. The margins of cemented areas are characterized locally by striking patterns of elongate cementation that have a strong subvertical orientation. We have considered a variety of possible mechanisms for the formation of these elongate cements, including deformation, weathering, rotation of adjacent cemented beds, and precipitation from flowing ground water. All but the latter can be ruled out. In addition, the elongate cements closely resemble elongate concretions that form from flowing ground water in sedimentary rocks. We conclude that the cements precipitated from flowing ground water, and are elongate parallel to the flow direction at the time of precipitation. Thus, these elongate cements provide an important constraint on models of fluid flow along faults in poorly consolidated sediments; i.e., the orientation of outcrop-scale flow. This content is PDF only. Please click on the PDF icon to access. First Page Preview Close Modal You do not have access to this content, please speak to your institutional administrator if you feel you should have access.