Geometric and numerical model of progressive limb rotation in detachment folds

Abstract

Research Article| April 01, 1994 Geometric and numerical model of progressive limb rotation in detachment folds Stuart Hardy; Stuart Hardy 1Fault Dynamics Project, Department of Geology, Royal Holloway University of London, Egham Hill, Egham, Surrey TW20 OEX, United Kingdom Search for other works by this author on: GSW Google Scholar Josep Poblet Josep Poblet 1Fault Dynamics Project, Department of Geology, Royal Holloway University of London, Egham Hill, Egham, Surrey TW20 OEX, United Kingdom Search for other works by this author on: GSW Google Scholar Author and Article Information Stuart Hardy 1Fault Dynamics Project, Department of Geology, Royal Holloway University of London, Egham Hill, Egham, Surrey TW20 OEX, United Kingdom Josep Poblet 1Fault Dynamics Project, Department of Geology, Royal Holloway University of London, Egham Hill, Egham, Surrey TW20 OEX, United Kingdom Publisher: Geological Society of America First Online: 02 Jun 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (1994) 22 (4): 371–374. https://doi.org/10.1130/0091-7613(1994)022<0371:GANMOP>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 Email Permissions Search Site Citation Stuart Hardy, Josep Poblet; Geometric and numerical model of progressive limb rotation in detachment folds. Geology 1994;; 22 (4): 371–374. doi: https://doi.org/10.1130/0091-7613(1994)022<0371:GANMOP>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 A simple, area-balanced, geometric model of progressive limb rotation in detachment folds allows the quantification of displacement, uplift, and rotation and the assessment of their effect upon growth strata geometries. Translation of this geometric model into a velocity model of deformation allows the modeling of associated growth strata resulting from background sedimentation and local erosion, transport, and deposition. We show that with constant displacement and sedimentation rate, this model predicts a progressive unconformity, indicating the onlap and eventual overlap of the fold limb caused by a decreasing uplift rate. This decrease is a consequence of the kinematics of progressive limb rotation. Increases in displacement rate, with sedimentation rate kept constant, can lead to offlap and angular unconformities, although subsequent onlap does not necessarily reflect a return to a lower displacement rate. Modeled growth strata geometries exhibit many of the features reported from the literature. 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.