Portal de Periódicos da CAPES

Global coal gap between Permian–Triassic extinction and Middle Triassic recovery of peat-forming plants

1996; Geological Society of America; Volume: 108; Issue: 2 Linguagem: Inglês

10.1130/0016-7606(1996)108 2.3.co;2

1943-2674

Gregory J. Retallack, J.J. Veevers, Ric Morante,

Peatlands and Wetlands Ecology

Research Article| February 01, 1996 Global coal gap between Permian–Triassic extinction and Middle Triassic recovery of peat-forming plants Gregory J. Retallack; Gregory J. Retallack 1Department of Geological Sciences, University of Oregon, Eugene, Oregon 97403-1272 Search for other works by this author on: GSW Google Scholar John J. Veevers; John J. Veevers 2School of Earth Sciences, Macquarie University, New South Wales 2109, Australia Search for other works by this author on: GSW Google Scholar Ric Morante Ric Morante 2School of Earth Sciences, Macquarie University, New South Wales 2109, Australia Search for other works by this author on: GSW Google Scholar Author and Article Information Gregory J. Retallack 1Department of Geological Sciences, University of Oregon, Eugene, Oregon 97403-1272 John J. Veevers 2School of Earth Sciences, Macquarie University, New South Wales 2109, Australia Ric Morante 2School of Earth Sciences, Macquarie University, New South Wales 2109, Australia Publisher: Geological Society of America First Online: 01 Jun 2017 Online ISSN: 1943-2674 Print ISSN: 0016-7606 Geological Society of America GSA Bulletin (1996) 108 (2): 195–207. https://doi.org/10.1130/0016-7606(1996)108 2.3.CO;2 Article history First Online: 01 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation Gregory J. Retallack, John J. Veevers, Ric Morante; Global coal gap between Permian–Triassic extinction and Middle Triassic recovery of peat-forming plants. GSA Bulletin 1996;; 108 (2): 195–207. doi: https://doi.org/10.1130/0016-7606(1996)108 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 SocietyGSA Bulletin Search Advanced Search Abstract Early Triassic coals are unknown, and Middle Triassic coals are rare and thin. The Early Triassic coal gap began with extinction of peat-forming plants at the end of the Permian (ca. 250 Ma), with no coal known anywhere until Middle Triassic (243 Ma). Permian levels of plant diversity and peat thickness were not recovered until Late Triassic (230 Ma). Tectonic and climatic explanations for the coal gap fail because deposits of fluctuating sea levels and sedimentary facies and paleosols commonly found in coal-bearing sequences are present also in Early Triassic rocks. Nor do we favor explanations involving evolutionary advances in the effectiveness of fungal decomposers, insects or tetrapod herbivores, which became cosmopolitan and much reduced in diversity across the Permian-Triassic boundary. Instead, we favor explanations involving extinction of peat-forming plants at the Permian-Triassic boundary, followed by a hiatus of some 10 m.y. until newly evolved peat-forming plants developed tolerance to the acidic dysaerobic conditions of wetlands. This view is compatible not only with the paleobotanical record of extinction of swamp plants, but also with indications of a terminal Permian productivity crash from δ13Corg and total organic carbon of both nonmarine and shallow marine shales. 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.