Broad-terrane Jurassic flood basalts across northeastern North America

Research Article| April 01, 1996 Broad-terrane Jurassic flood basalts across northeastern North America J. Gregory McHone J. Gregory McHone 1Graduate Liberal Studies Program, Wesleyan University, Middletown, Connecticut 06459-0519 Search for other works by this author on: GSW Google Scholar Author and Article Information J. Gregory McHone 1Graduate Liberal Studies Program, Wesleyan University, Middletown, Connecticut 06459-0519 Publisher: Geological Society of America First Online: 02 Jun 2017 Online Issn: 1943-2682 Print Issn: 0091-7613 Geological Society of America Geology (1996) 24 (4): 319–322. https://doi.org/10.1130/0091-7613(1996)024<0319:BTJFBA>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. Gregory McHone; Broad-terrane Jurassic flood basalts across northeastern North America. Geology 1996;; 24 (4): 319–322. doi: https://doi.org/10.1130/0091-7613(1996)024<0319:BTJFBA>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 Early Jurassic tholeiitic lavas that flowed across Mesozoic basins of northeastern North America were comagmatic, as shown by their geochemistry, petrography, paleomagnetism, radiometric ages, and stratigraphy. The basin basalts are correlated with diabase dikes that intersect the basins but also extend far outside them. If the dikes represent feeders to fissure vents, a vast flood-basalt province must have extended across the rifted terranes of eastern North America in Early Jurassic time. The initial member of the basalt flood was the most uniform and widespread among present basin remnants of the basalts, but subsequent flows may have covered some areas farther from the basins. Other, younger Jurassic flood basalts have been described along submarine sections of the continental shelf and shelf break, and beneath Cretaceous coastal plain sediments in the southeastern United States. Across the inland Mesozoic rift terranes, the initial fissure eruptions produced a temporary basaltic plain perhaps 1600 km long and 200 to 400 km wide, or roughly 500000 km2, rivaling other great continental flood-basalt provinces. 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.