Flow Structure and Form of the Deep Creek Stock, Southern Seven Devils Mountains, Idaho

Abstract

Research Article| January 01, 1973 Flow Structure and Form of the Deep Creek Stock, Southern Seven Devils Mountains, Idaho WILLIS H. WHITE WILLIS H. WHITE 1Henderson Mine, Climax Molybdenum Company, Empire, Colorado 80438 Search for other works by this author on: GSW Google Scholar Author and Article Information WILLIS H. WHITE 1Henderson Mine, Climax Molybdenum Company, Empire, Colorado 80438 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 (1): 199–210. https://doi.org/10.1130/0016-7606(1973)84<199:FSAFOT>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 WILLIS H. WHITE; Flow Structure and Form of the Deep Creek Stock, Southern Seven Devils Mountains, Idaho. GSA Bulletin 1973;; 84 (1): 199–210. doi: https://doi.org/10.1130/0016-7606(1973)84<199:FSAFOT>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 The Cretaceous Deep Creek stock, a quartz diorite intrusion in the southern Seven Devils Mountains of west-central Idaho, consists of a funnel-shaped western portion and a lobe-shaped eastern prong. The western portion is concentrically zoned with an inward increase in potassium feldspar, quartz, and non-opaque accessories and decrease in biotite, hornblende, and opaque accessories.The orientation of primary platy flow structure and marble xenoliths, as well as the mineral distribution, suggest that the western portion of the stock may extend to depth, but that the eastern prong is a shallow lobe. The platy flow structure is thought to have originated (1) by shear flow alignment of platy minerals parallel to contacts early in the emplacement history of the stock, and (2) by orientation of platy minerals normal to the direction of greatest magmatic pressure during the later stages of intrusion. 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.