Nd and Sr isotopic signatures of Mesozoic plutons in northeastern North America

Abstract

Research Article| August 01, 1988 Nd and Sr isotopic signatures of Mesozoic plutons in northeastern North America K. A. Foland; K. A. Foland 1Department of Geology and Mineralogy, Ohio State University, Columbus, Ohio 43210 Search for other works by this author on: GSW Google Scholar Chen Jiang-feng; Chen Jiang-feng 1Department of Geology and Mineralogy, Ohio State University, Columbus, Ohio 43210 Search for other works by this author on: GSW Google Scholar Lisa A. Gilbert; Lisa A. Gilbert 1Department of Geology and Mineralogy, Ohio State University, Columbus, Ohio 43210 Search for other works by this author on: GSW Google Scholar A. W. Hofmann A. W. Hofmann 2Max-Planck-Institut für Chemie, Postfach 3060, D 6500 Mainz, Federal Republic of Germany Search for other works by this author on: GSW Google Scholar Author and Article Information K. A. Foland 1Department of Geology and Mineralogy, Ohio State University, Columbus, Ohio 43210 Chen Jiang-feng 1Department of Geology and Mineralogy, Ohio State University, Columbus, Ohio 43210 Lisa A. Gilbert 1Department of Geology and Mineralogy, Ohio State University, Columbus, Ohio 43210 A. W. Hofmann 2Max-Planck-Institut für Chemie, Postfach 3060, D 6500 Mainz, Federal Republic of Germany Publisher: Geological Society of America First Online: 02 Jun 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (1988) 16 (8): 684–687. https://doi.org/10.1130/0091-7613(1988)016<0684:NASISO>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 Email Permissions Search Site Citation K. A. Foland, Chen Jiang-feng, Lisa A. Gilbert, A. W. Hofmann; Nd and Sr isotopic signatures of Mesozoic plutons in northeastern North America. Geology 1988;; 16 (8): 684–687. doi: https://doi.org/10.1130/0091-7613(1988)016<0684:NASISO>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 Nd and Sr initial isotope ratios are reported for 17 Mesozoic plutons of the Monteregian Hills and White Mountain series provinces in northeastern North America. Some variation in the isotopic ratios at most localities is caused by crustal-contamination processes. When the crustal assimilation effects are taken into account, the initial ratios for apparently uncontaminated, mantle-derived parental magmas show only restricted range in 87Sr/86Sr (0.7032 to 0.7040) and εNd (T) (+5.4 to +2.3), which are inversely correlated. These ratios characterize alkaline to subalkaline magmas emplaced over more than 400 km2 and about 80 m.y. The isotopic and trace-element characteristics are broadly similar to those of many modern ocean-island basalts, specifically the New England Seamounts, suggesting similar time-integrated, lithophile-element-depleted mantle sources. The results are consistent with plume-related mantle sources deeper than the subcontinental mantle. 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.