Topographic advection on fault-bend folds: Inheritance of valley positions and the formation of wind gaps

Abstract

Research Article| September 01, 2006 Topographic advection on fault-bend folds: Inheritance of valley positions and the formation of wind gaps Scott R. Miller; Scott R. Miller 1Department of Geosciences, Pennsylvania State University, University Park, Pennsylvania 16802, USA Search for other works by this author on: GSW Google Scholar Rudy L. Slingerland Rudy L. Slingerland 1Department of Geosciences, Pennsylvania State University, University Park, Pennsylvania 16802, USA Search for other works by this author on: GSW Google Scholar Author and Article Information Scott R. Miller 1Department of Geosciences, Pennsylvania State University, University Park, Pennsylvania 16802, USA Rudy L. Slingerland 1Department of Geosciences, Pennsylvania State University, University Park, Pennsylvania 16802, USA Publisher: Geological Society of America Received: 27 Jan 2006 Revision Received: 24 Apr 2006 Accepted: 28 Apr 2006 First Online: 09 Mar 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (2006) 34 (9): 769–772. https://doi.org/10.1130/G22658.1 Article history Received: 27 Jan 2006 Revision Received: 24 Apr 2006 Accepted: 28 Apr 2006 First Online: 09 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation Scott R. Miller, Rudy L. Slingerland; Topographic advection on fault-bend folds: Inheritance of valley positions and the formation of wind gaps. Geology 2006;; 34 (9): 769–772. doi: https://doi.org/10.1130/G22658.1 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 Drainage basins formed along the flanks of any individual linear mountain range or fault block are commonly observed to be self-similar in planform, uniformly spaced, and in some cases aligned with drainage basins on the opposing flank. Data from the Siwalik Hills, Nepal, illustrate this organization where drainage basins and valleys are aligned across the main divide. We suggest that valley alignment is a consequence of advection of topography across the divide. To explore this hypothesis, numerical experiments were conducted using a landscape evolution model of a fault-bend fold that simulates detachment-limited stream incision and linear hillslope diffusion. Results show that the presence of incised valleys and a lateral component of bedrock motion are necessary and sufficient conditions for advection of relief across the divide, a mechanism by which wind gaps form and valley spacing on the far side of a ridge is inherited from that on the near side. This topographic inheritance is promoted by low rock erodibility, low precipitation rates, fast bedrock velocities, and/or intermediate fault dips. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.