Middle/Late Triassic (230 ±5 Ma) singularity in the stratigraphic and magmatic history of the Pangean heat anomaly

Research Article| September 01, 1989 Middle/Late Triassic (230 ±5 Ma) singularity in the stratigraphic and magmatic history of the Pangean heat anomaly J. J. Veevers J. J. Veevers 1Australian Plate Research Group, School of Earth Sciences, Macquarie University, Sydney, New South Wales 2109, Australia Search for other works by this author on: GSW Google Scholar Geology (1989) 17 (9): 784–787. https://doi.org/10.1130/0091-7613(1989)017<0784:MLTMSI>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 J. J. Veevers; Middle/Late Triassic (230 ±5 Ma) singularity in the stratigraphic and magmatic history of the Pangean heat anomaly. Geology 1989;; 17 (9): 784–787. doi: https://doi.org/10.1130/0091-7613(1989)017<0784:MLTMSI>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 The Phanerozoic history of continental dispersal and coalescence contains an epoch of radical change at about the Middle/Late Triassic boundary (230 ±5 Ma), marked by (1) the final coalescence of Pangea by the contact of south China and Cimmeria with Laurasia and terminal compressive deformation in Australia and southern Africa, and (2) the incipient dispersal of Pangea by the onset of continental rifting in eastern North America and northwest Africa, Argentina, east Africa, and Western Australia. This epoch of coalescence and incipient dispersal correlates with a change from (1) an icehouse state to a greenhouse state, and (2) changes, from a fall to a rise, in the sea-level curve, in the emplacement of North American granite, and in the cumulative curve of reversed to normal magnetic polarity. These changes are interpreted as indicating the first major loss from the heat accumulated beneath Pangea, now represented by the Atlantic-African geoid high. 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.