Neoproterozoic reef microstructures from the Little Dal Group, northwestern Canada

Research Article| March 01, 1993 Neoproterozoic reef microstructures from the Little Dal Group, northwestern Canada Elizabeth C. Turner; Elizabeth C. Turner 1Department of Geological Sciences, Queen's University, Kingston, Ontario K7L 3N6, Canada Search for other works by this author on: GSW Google Scholar Guy M. Narbonne; Guy M. Narbonne 1Department of Geological Sciences, Queen's University, Kingston, Ontario K7L 3N6, Canada Search for other works by this author on: GSW Google Scholar Noel P. James Noel P. James 1Department of Geological Sciences, Queen's University, Kingston, Ontario K7L 3N6, Canada Search for other works by this author on: GSW Google Scholar Author and Article Information Elizabeth C. Turner 1Department of Geological Sciences, Queen's University, Kingston, Ontario K7L 3N6, Canada Guy M. Narbonne 1Department of Geological Sciences, Queen's University, Kingston, Ontario K7L 3N6, Canada Noel P. James 1Department of Geological Sciences, Queen's University, Kingston, Ontario K7L 3N6, Canada Publisher: Geological Society of America First Online: 02 Jun 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (1993) 21 (3): 259–262. https://doi.org/10.1130/0091-7613(1993)021<0259:NRMFTL>2.3.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 Elizabeth C. Turner, Guy M. Narbonne, Noel P. James; Neoproterozoic reef microstructures from the Little Dal Group, northwestern Canada. Geology 1993;; 21 (3): 259–262. doi: https://doi.org/10.1130/0091-7613(1993)021<0259:NRMFTL>2.3.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 Basinal facies in the Neoproterozoic Little Dal Group contain large reefs up to 300 m in height and 8 km in diameter. In contrast to the stromatolitic composition typical of earlier Proterozoic buildups, Little Dal reefs consist mainly of three different calcareous microfossils. A tubule-thread microfossil, analogous to the calcimicrobe Girvanella in Paleozoic reefs, formed laminar-reticulate structures, like those in Ordovician bioherms. A clotted to saccate microfossil, comparable morphologically to Paleozoic Renalcis, constructed botryoidal to encrusting masses. An enigmatic component of multicellular appearance that has attributes of an early calcified metaphyte exhibits the encrusting sheetlike habit characteristic of middle to late Paleozoic algae. These reefs represent an intermediate stage between Proterozoic stromatolitic buildups and Paleozoic metazoan-calcimicrobial reefs and biogenic mounds. 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.