Abstract
Research Article| June 01, 1982 Green River laminites: Does the playa-lake model really invalidate the stratified-lake model? Bruce W. Boyer Bruce W. Boyer 115300 Manor Road, Monkton, Maryland 21111 Search for other works by this author on: GSW Google Scholar Author and Article Information Bruce W. Boyer 115300 Manor Road, Monkton, Maryland 21111 Publisher: Geological Society of America First Online: 01 Jun 2017 Online Issn: 1943-2682 Print Issn: 0091-7613 Geological Society of America Geology (1982) 10 (6): 321–324. https://doi.org/10.1130/0091-7613(1982)10<321:GRLDTP>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 Bruce W. Boyer; Green River laminites: Does the playa-lake model really invalidate the stratified-lake model?. Geology 1982;; 10 (6): 321–324. doi: https://doi.org/10.1130/0091-7613(1982)10<321:GRLDTP>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 Proponents of the playa-lake model have proposed deposition of most of the Green River Formation microlaminated carbonates (including oil shales) in lakes that were not perennially stratified (meromictic). However, there is a variety of evidence favoring a meromictic depositional environment: (1) close similarity of much of the lamination to varves in modern meromictic lakes, (2) evidence that hydrologic events favoring development of meromixis (chemical stratification) occurred prior to deposition of major accumulations of oil shale, (3) mutually exclusive distribution of fossil nekton (especially fish) and normal lacustrine benthos (including mollusks), and (4) analogy with a Quaternary playa that became a meromictic lake following increased inflow.The playa-lake model is untenable for the typical fish-bearing, kerogen-rich microlaminated sediments. These laminites were probably deposited in a large ectogenic meromictic lake—a chemically stratified lake that formed when increased fresh-water inflow “drowned” a saline playa complex. 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.
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