Lithospheric uplift in eastern Gondwana: Evidence for a long-lived mantle plume system?

Abstract

Research Article| January 01, 1991 Lithospheric uplift in eastern Gondwana: Evidence for a long-lived mantle plume system? Ray Kent Ray Kent 1Department of Geology, University of Leicester, Leicester LE1 7RH, England Search for other works by this author on: GSW Google Scholar Author and Article Information Ray Kent 1Department of Geology, University of Leicester, Leicester LE1 7RH, England Publisher: Geological Society of America First Online: 02 Jun 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (1991) 19 (1): 19–23. https://doi.org/10.1130/0091-7613(1991)019<0019:LUIEGE>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 Ray Kent; Lithospheric uplift in eastern Gondwana: Evidence for a long-lived mantle plume system?. Geology 1991;; 19 (1): 19–23. doi: https://doi.org/10.1130/0091-7613(1991)019<0019:LUIEGE>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 Recent work has demonstrated that modern drainage systems on rifted continental margins may be the product of ancient lithospheric doming in areas of flood-basalt magmatism. This uplift is thought to reflect the existence of widespread mafic underplating and excess melt generation at rift zones. Here I show that uplift due to the initiation of a thermal anomaly (plume head) in the asthenosphere may be evidenced by the formation of discrete rift structures and persistent paleodrainage (sediment dispersal) patterns for up to 150 m.y. priorto the commencement of igneous activity and final continental breakup. Volcanism thus occurs as a comparatively late stage geochemical response to the long-term residence of hot plume material beneath continental mantle lithosphere. 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.