Research Article| March 01, 1979 Comment and reply on ‘Diagenetic dolomite formation related to Paleozoic paleogeography of the Cordilleran miogeocline in Nevada’: REPLY J. B. Dunham; J. B. Dunham 1Department of Earth Sciences, University of California, Riverside, California 92521 Search for other works by this author on: GSW Google Scholar E. R. Olson E. R. Olson 1Department of Earth Sciences, University of California, Riverside, California 92521 Search for other works by this author on: GSW Google Scholar Author and Article Information J. B. Dunham 1Department of Earth Sciences, University of California, Riverside, California 92521 E. R. Olson 1Department of Earth Sciences, University of California, Riverside, California 92521 Publisher: Geological Society of America First Online: 02 Jun 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (1979) 7 (3): 118. https://doi.org/10.1130/0091-7613(1979)7<118a:CARODD>2.0.CO;2 Article history First Online: 02 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Tools Icon Tools Get Permissions Search Site Citation J. B. Dunham, E. R. Olson; Comment and reply on ‘Diagenetic dolomite formation related to Paleozoic paleogeography of the Cordilleran miogeocline in Nevada’: REPLY. Geology 1979;; 7 (3): 118. doi: https://doi.org/10.1130/0091-7613(1979)7<118a:CARODD>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 SocietyGeology Search Advanced Search Abstract No Abstract Available. 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.
Research Article| September 01, 1978 Diagenetic dolomite formation related to Paleozoic paleogeography of the Cordilleran miogeocline in Nevada J. B. Dunham; J. B. Dunham 1Department of Earth Sciences, University of California, Riverside, California 92521 Search for other works by this author on: GSW Google Scholar E. R. Olson E. R. Olson 1Department of Earth Sciences, University of California, Riverside, California 92521 Search for other works by this author on: GSW Google Scholar Author and Article Information J. B. Dunham 1Department of Earth Sciences, University of California, Riverside, California 92521 E. R. Olson 1Department of Earth Sciences, University of California, Riverside, California 92521 Publisher: Geological Society of America First Online: 02 Jun 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (1978) 6 (9): 556–559. https://doi.org/10.1130/0091-7613(1978)6<556:DDFRTP>2.0.CO;2 Article history First Online: 02 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 J. B. Dunham, E. R. Olson; Diagenetic dolomite formation related to Paleozoic paleogeography of the Cordilleran miogeocline in Nevada. Geology 1978;; 6 (9): 556–559. doi: https://doi.org/10.1130/0091-7613(1978)6<556:DDFRTP>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 SocietyGeology Search Advanced Search Abstract Many dolomite units in the early to middle Paleozoic Cordilleran miogeocline of Nevada formed through diagenetic replacement of subtidally deposited CaCO3 by CaMg(CO3)2. Across the miogeocline, the consistent temporal and spatial distribution of limestone on the west and dolomite on the east indicates that there was a paleogeographic control on diagenetic dolomite formation. Dolomitization models involving hypersaline brines are inadequate to account for the origin of regionally extensive replacement-dolomite formations in Nevada that lack associated evaporite-mineral suites.Several workers have recently proposed that the mixing of marine pore water with meteoric-derived ground water would lead to dolomitization of CaCO3 in the subsurface, without precipitation of evaporites. We propose that subtidally deposited CaCO3 in east-central Nevada became dolomitized in the subsurface as a result of dilution of marine pore water by fresh ground water derived from subaerially exposed tracts in the eastern part of the miogeocline. CaCO3 sedimentary deposits in west-central Nevada were never intruded by fresh water because they were not proximal to areas of freshwater recharge; consequently, these sediments escaped dolomitization. The freshwater-seawater-mixing model is compatible with the regional extent of replacement-dolomite formations in Nevada and resolves the relation between dolomitization and paleogeography. 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.
