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Ages of Batholithic Intrusions of Northern and Central Chile

1961; Geological Society of America; Volume: 72; Issue: 10 Linguagem: Inglês

10.1130/0016-7606(1961)72[1551

1943-2674

Carlos Ruíz, Luis Aguirre, JOSÉ LUIS CORVALÁN, Harry J. Rose, Kenneth Segerstrom, T. W. Stern,

Geological and Tectonic Studies in Latin America

Research Article| October 01, 1961 Ages of Batholithic Intrusions of Northern and Central Chile CARLOS RUIZ; CARLOS RUIZ Institute de Investigaciones Geológicas, Santiago, Chile Search for other works by this author on: GSW Google Scholar LUIS AGUIRRE; LUIS AGUIRRE Institute de Investigaciones Geológicas, Santiago, Chile Search for other works by this author on: GSW Google Scholar JOSÉ CORVALAN; JOSÉ CORVALAN Institute de Investigaciones Geológicas, Santiago, Chile Search for other works by this author on: GSW Google Scholar H. J ROSE, JR.; H. J ROSE, JR. U. S. Geological Survey, Santiago, Chile, and Washington, D. C Search for other works by this author on: GSW Google Scholar KENNETH SEGERSTROM; KENNETH SEGERSTROM U. S. Geological Survey, Santiago, Chile, and Washington, D. C Search for other works by this author on: GSW Google Scholar T. W STERN T. W STERN U. S. Geological Survey, Santiago, Chile, and Washington, D. C Search for other works by this author on: GSW Google Scholar Author and Article Information CARLOS RUIZ Institute de Investigaciones Geológicas, Santiago, Chile LUIS AGUIRRE Institute de Investigaciones Geológicas, Santiago, Chile JOSÉ CORVALAN Institute de Investigaciones Geológicas, Santiago, Chile H. J ROSE, JR. U. S. Geological Survey, Santiago, Chile, and Washington, D. C KENNETH SEGERSTROM U. S. Geological Survey, Santiago, Chile, and Washington, D. C T. W STERN U. S. Geological Survey, Santiago, Chile, and Washington, D. C Publisher: Geological Society of America Received: 10 May 1960 First Online: 02 Mar 2017 Online ISSN: 1943-2674 Print ISSN: 0016-7606 Copyright © 1961, The Geological Society of America, Inc. Copyright is not claimed on any material prepared by U.S. government employees within the scope of their employment. GSA Bulletin (1961) 72 (10): 1551–1559. https://doi.org/10.1130/0016-7606(1961)72[1551:AOBION]2.0.CO;2 Article history Received: 10 May 1960 First Online: 02 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation CARLOS RUIZ, LUIS AGUIRRE, JOSÉ CORVALAN, H. J ROSE, KENNETH SEGERSTROM, T. W STERN; Ages of Batholithic Intrusions of Northern and Central Chile. GSA Bulletin 1961;; 72 (10): 1551–1559. doi: https://doi.org/10.1130/0016-7606(1961)72[1551:AOBION]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 SocietyGSA Bulletin Search Advanced Search Abstract Their stratigraphic setting demonstrates that three batholithic intrusions in northern and central Chile are respectively pre-Jurassic, Jurassic, and Cretaceous. Radiometric age determinations, by the lead-alpha (Larsen) method, indicate ages of 265 ± 30, 120 ± 15 to 125 ± 15, and 95 ± 10 to 130 ± 15 million years respectively for samples from the batholiths whose stratigraphic setting has been established or is inferred. With one exception, the radiometric ages are consistent with the stratigraphy. The exceptional determination of 130 ± 15 million years was for a sample of granite that intrudes Cretaceous rocks. Three other samples of Cretaceous granitic rocks were within the range of 95 ± 10 to 105 ± 10 million years.Angular unconformities whose ages are correlative with the intrusions suggest that the three batholiths can be related respectively to Hercynian, Late Jurassic, and middle Cretaceous orogenies. 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.