GEOLOGIC PROBLEMS IN THE SOUTHEAST MISSOURI LEAD DISTRICT

Abstract

Research Article| March 01, 1954 GEOLOGIC PROBLEMS IN THE SOUTHEAST MISSOURI LEAD DISTRICT E. L OHLE; E. L OHLE 1 Principal Contributions by J. S. Brown, W. S. Detrick, J. A. Emery, J. E. Jewell, J. E. Kiser, E. L. Ohle, F. G. Snyder, R. E. Wagner, W. W. Weigel, and F. B. Whiting. Written and edited by E. L. Ohle and J. S. Brown. Search for other works by this author on: GSW Google Scholar J. S BROWN, Editors J. S BROWN, Editors 1 Principal Contributions by J. S. Brown, W. S. Detrick, J. A. Emery, J. E. Jewell, J. E. Kiser, E. L. Ohle, F. G. Snyder, R. E. Wagner, W. W. Weigel, and F. B. Whiting. Written and edited by E. L. Ohle and J. S. Brown. Search for other works by this author on: GSW Google Scholar Author and Article Information E. L OHLE 1 Principal Contributions by J. S. Brown, W. S. Detrick, J. A. Emery, J. E. Jewell, J. E. Kiser, E. L. Ohle, F. G. Snyder, R. E. Wagner, W. W. Weigel, and F. B. Whiting. Written and edited by E. L. Ohle and J. S. Brown. J. S BROWN, Editors 1 Principal Contributions by J. S. Brown, W. S. Detrick, J. A. Emery, J. E. Jewell, J. E. Kiser, E. L. Ohle, F. G. Snyder, R. E. Wagner, W. W. Weigel, and F. B. Whiting. Written and edited by E. L. Ohle and J. S. Brown. Publisher: Geological Society of America Received: 22 Dec 1952 First Online: 02 Mar 2017 Online ISSN: 1943-2674 Print ISSN: 0016-7606 Copyright © 1954, The Geological Society of America, Inc. Copyright is not claimed on any material prepared by U.S. government employees within the scope of their employment. GSA Bulletin (1954) 65 (3): 201–222. https://doi.org/10.1130/0016-7606(1954)65[201:GPITSM]2.0.CO;2 Article history Received: 22 Dec 1952 First Online: 02 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation E. L OHLE, J. S BROWN; GEOLOGIC PROBLEMS IN THE SOUTHEAST MISSOURI LEAD DISTRICT. GSA Bulletin 1954;; 65 (3): 201–222. doi: https://doi.org/10.1130/0016-7606(1954)65[201:GPITSM]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 This paper is essentially a progress report on the geological study being made in the Southeast Missouri District by the St. Joseph Lead Company. The problems encountered are described and the progress toward their solution is assessed. These problems have consisted of the subdivision of the Bonneterre formation into units that are mappable underground, the recognition of the types of rock alteration accompanying or preceding ore deposition, the recognition of the structural controls of the ore trends, and the collection of data that may indicate the method of ore genesis.The Bonneterre formation is divided into eight principal zones which are numbered from top to bottom. Contacts between zones are mapped, and structural features are indicated by contouring. Ore in each zone has distinctive characteristics.Buried Precambrian igneous knobs have localized some ore bodies in the Lead Belt area, but sedimentary arch structures of depositional origin are the outstanding features controlling ore trends. Fracture zones exerted a secondary influence where arches are present and, where arches are absent, were, in some places the dominant ore-controlling structures.Major alteration effects are dolomitization of limestone, “fingering” and spotting, recrystallization, and removal by solution. Glauconite and adularia have been introduced or redistributed.Lateral migration of the ore solution was important, and the vertical component of motion almost surely was up rather than down. The marginal position of sphalerite in the galena ore bodies is in accord with the relative solubilities of the two sulfides. 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.