Structural study of the Snowbank Stock

Research Article| August 31, 1934 Structural study of the Snowbank Stock† ROBERT BALK; ROBERT BALK Search for other works by this author on: GSW Google Scholar FRANK F. GROUT FRANK F. GROUT Search for other works by this author on: GSW Google Scholar GSA Bulletin (1934) 45 (4): 621–636. https://doi.org/10.1130/GSAB-45-621 Article history received: 30 Dec 1933 first online: 02 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Twitter LinkedIn Tools Icon Tools Get Permissions Search Site Citation ROBERT BALK, FRANK F. GROUT; Structural study of the Snowbank Stock. GSA Bulletin 1934;; 45 (4): 621–636. doi: https://doi.org/10.1130/GSAB-45-621 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 INTRODUCTIONThe Snowbank stock lies a few miles east of the productive iron mines of the Vermilion Range in Minnesota (Fig. 1). It is about three miles wide and nearly five miles long. Several compositional phases are involved, as described by Sanders.1 The mass seems to be a perfectly ordinary intrusive, analogous to hundreds of small intrusives in the pre-Cambrian rocks of the Canadian shield. It is well exposed on the shores of the lake and on some hills from which the forest growth has been burnt. Two prominent phases have been analyzed and others partially tested. Many Rosiwal measurements were made by Sanders.2Analyses of Books at Snowbank Lake . I . II . III . IV . SiO2 .................................. 64.10 69.50 Al2O3 .................................. 16.70 16.86 Fe2O3 ................................. 1.54 .50 FeO .................................... 1.81 .64 MgO .................................. 1.86 1.45 CaO .................................. 3.25 1.70 Na2O .................................. 5.35 4.58 6.61 5.57 K2O .................................... 3.77 3.94 5.16 4.92 . I . II . III . IV . SiO2 .................................. 64.10 69.50 Al2O3 .................................. 16.70 16.86 Fe2O3 ................................. 1.54 .50 FeO .................................... 1.81 .64 MgO .................................. 1.86 1.45 CaO .................................. 3.25 1.70 Na2O .................................. 5.35 4.58 6.61 5.57 K2O .................................... 3.77 3.94 5.16 4.92 View Large 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.