Modified Contour-Generalization Procedure As Applied to the Santa Lucia Range, California

Abstract

Research Article| October 01, 1973 Modified Contour-Generalization Procedure As Applied to the Santa Lucia Range, California ARTHUR D. HOWARD ARTHUR D. HOWARD 1Department of Geology, Stanford University, Stanford, California 94305 Search for other works by this author on: GSW Google Scholar Author and Article Information ARTHUR D. HOWARD 1Department of Geology, Stanford University, Stanford, California 94305 Publisher: Geological Society of America First Online: 01 Jun 2017 Online ISSN: 1943-2674 Print ISSN: 0016-7606 Geological Society of America GSA Bulletin (1973) 84 (10): 3415–3428. https://doi.org/10.1130/0016-7606(1973)84<3415:MCPAAT>2.0.CO;2 Article history First Online: 01 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 ARTHUR D. HOWARD; Modified Contour-Generalization Procedure As Applied to the Santa Lucia Range, California. GSA Bulletin 1973;; 84 (10): 3415–3428. doi: https://doi.org/10.1130/0016-7606(1973)84<3415:MCPAAT>2.0.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 SocietyGSA Bulletin Search Advanced Search Abstract Contour generalization is an established procedure for restoring dissected landscapes to predissection forms. The modified generalization procedure herein proposed dispenses with most side-slope contours, leaving upland surfaces suspended at their individual levels. In addition, sequential cartographic patterns permit ready recognition of surfaces, and hachures emphasize abrupt peripheral slopes.Although the primary purpose is to discuss the proposed procedure, the bearing of the final map on the history of the Santa Lucia Range is briefly considered. The origin of the high-level surfaces has not yet been determined, although fragmentary evidence suggests they are probably fluvial. The multiple surfaces were presumably developed in response to changes in the elevation of base level. Simultaneous development of the surfaces due to differential lowering of rocks of varying resistance, independent of base level, is refuted by the similarity of the rock assemblages truncated by the different surfaces. The high surfaces in the northern part of the range are found to be sloping, rather than horizontal as previously supposed. Tilting of the northern area seems indicated. At their elevated southern ends, these surfaces hang above considerably lower terrain. Here, the relative horizontality of at least one extensive surface suggests simple vertical uplift. 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.