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Compositional evolution of intrusive rocks in the eastern Greater Antilles island arc

1979; Geological Society of America; Volume: 7; Issue: 4 Linguagem: Inglês

10.1130/0091-7613(1979)7 2.0.co;2

1943-2682

Stephen E. Kesler, John F. Sutter,

earthquake and tectonic studies

Research Article| April 01, 1979 Compositional evolution of intrusive rocks in the eastern Greater Antilles island arc Stephen E. Kesler; Stephen E. Kesler 1Department of Geology, University of Toronto, Toronto, Ontario M5S 1A1, Canada Search for other works by this author on: GSW Google Scholar John F. Sutter John F. Sutter 2Department of Geology, Ohio State University, Columbus, Ohio 43210 Search for other works by this author on: GSW Google Scholar Author and Article Information Stephen E. Kesler 1Department of Geology, University of Toronto, Toronto, Ontario M5S 1A1, Canada John F. Sutter 2Department of Geology, Ohio State University, Columbus, Ohio 43210 Publisher: Geological Society of America First Online: 02 Jun 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (1979) 7 (4): 197–200. https://doi.org/10.1130/0091-7613(1979)7 2.0.CO;2 Article history First Online: 02 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation Stephen E. Kesler, John F. Sutter; Compositional evolution of intrusive rocks in the eastern Greater Antilles island arc. Geology 1979;; 7 (4): 197–200. doi: https://doi.org/10.1130/0091-7613(1979)7 2.0.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 Major-element chemical compositions of the Utuado, Morovis, San Lorenzo, Rio Blanco, Rio Vivi, Torrecilla, and Guyon intrusions in Puerto Rico and the nearby Virgin Islands batholith indicate that there was a decrease in K2O in the intrusive magmas over most of the last 40 m.y. of eastern Greater Antilles island-arc evolution (80 to 40 m.y. B.P.) with a possible slight increase after 40 m.y. B.P. The average rate of change of K2O content was about −0.06% K2O/m.y. This compositional evolution is similar to that observed in the intrusive rocks of the south-western United States. By analogy to interpretations made for that area, the observed compositional changes could have been caused by gradual flattening of the angle of subduction of the Caribbean plate beneath the south side of the eastern Greater Antilles until 40 m.y. B.P. and subsequent initiation of subduction along a new trench to the north. 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.