Early island-arc intrusive activity, Cordillera Central, Dominican Republic
dc.contributor.author | Lewis, John F. | en_US |
dc.contributor.author | Kesler, Stephen E. | en_US |
dc.contributor.author | Walker, Raymond L. | en_US |
dc.contributor.author | Jones, Lois M. | en_US |
dc.date.accessioned | 2006-09-11T18:50:50Z | |
dc.date.available | 2006-09-11T18:50:50Z | |
dc.date.issued | 1977-11 | en_US |
dc.identifier.citation | Kesler, Stephen E.; Lewis, John F.; Jones, Lois M.; Walker, Raymond L.; (1977). "Early island-arc intrusive activity, Cordillera Central, Dominican Republic." Contributions to Mineralogy and Petrology 65(1): 91-99. <http://hdl.handle.net/2027.42/47325> | en_US |
dc.identifier.issn | 0010-7999 | en_US |
dc.identifier.issn | 1432-0967 | en_US |
dc.identifier.uri | https://hdl.handle.net/2027.42/47325 | |
dc.description.abstract | Reconnaissance studies of early island-arc intrusions in the Cordillera Central of the Dominican Republic demonstrate that these rocks are mainly hornblende tonalite with lesser amounts of hornblende diorite, quartz diorite, granodiorite and quartz monzonite. Two plutons (El Bao, Medina) are petrographically and chemically homogeneous, whereas two others (El Rio and Loma de Cabrera) are compositionally heterogeneous. Samples from these intrusions range in SiO 2 from 49 to 70% with most rocks in the 59 to 62% range. K 2 O ranges from 0.24 to 3% and averages 1.2%. Cu, Zn, Co, Ni, V and possibly Cr decrease with increasing SiO 2 . Rb/Sr values for the intrusions are low but variable. Present-day 87 Sr/ 86 Sr values range from 0.7031 to 0.7045 for the El Bao and Loma de Cabrera batholiths and 0.7033 to 0.7091 for the Medina stock. These data do not generate isochrons. The Cordillera Central tonalite intrusions are the most abundant plutonic rock type in the Greater Antilles, although small, younger granodiorite and quartz monzonite stocks are present. The Cordillera Central intrusions are lower in SiO 2 , K 2 O, Rb, and Sr than the average composition of the Sierra Nevada batholith, but they are similar to the tonalites and trondjhemites from the western margin of the Sierra Nevada batholith. The low Rb/Sr ratios and low initital Sr 87 /Sr 86 ratios for the Cordillera Central intrusions combined with the high liquidus temperatures required for the generation of tonalite magmas strongly favor a subcrustal source for these magmas in an island-arc setting. | en_US |
dc.format.extent | 771307 bytes | |
dc.format.extent | 3115 bytes | |
dc.format.mimetype | application/pdf | |
dc.format.mimetype | text/plain | |
dc.language.iso | en_US | |
dc.publisher | Springer-Verlag | en_US |
dc.subject.other | Mineralogy | en_US |
dc.subject.other | Mineral Resources | en_US |
dc.subject.other | Geology | en_US |
dc.subject.other | Geosciences | en_US |
dc.title | Early island-arc intrusive activity, Cordillera Central, Dominican Republic | en_US |
dc.type | Article | en_US |
dc.subject.hlbsecondlevel | Geology and Earth Sciences | en_US |
dc.subject.hlbsecondlevel | Chemistry | en_US |
dc.subject.hlbtoplevel | Science | en_US |
dc.description.peerreviewed | Peer Reviewed | en_US |
dc.contributor.affiliationum | Department of Geology, University of Toronto, Toronto, Ontario, Canada; Department of Geology and Mineralogy, University of Michigan, 48109, Ann Arbor, MI, USA | en_US |
dc.contributor.affiliationother | Oak Ridge National Laboratory, Oak Ridge, Tennessee, USA | en_US |
dc.contributor.affiliationother | Department of Geology, George Washington University, Washington, D.C., USA | en_US |
dc.contributor.affiliationother | Department of Geology, University of Georgia, Athens, Georgia, USA | en_US |
dc.contributor.affiliationumcampus | Ann Arbor | en_US |
dc.description.bitstreamurl | http://deepblue.lib.umich.edu/bitstream/2027.42/47325/1/410_2004_Article_BF00373574.pdf | en_US |
dc.identifier.doi | http://dx.doi.org/10.1007/BF00373574 | en_US |
dc.identifier.source | Contributions to Mineralogy and Petrology | en_US |
dc.owningcollname | Interdisciplinary and Peer-Reviewed |
Files in this item
Remediation of Harmful Language
The University of Michigan Library aims to describe library materials in a way that respects the people and communities who create, use, and are represented in our collections. Report harmful or offensive language in catalog records, finding aids, or elsewhere in our collections anonymously through our metadata feedback form. More information at Remediation of Harmful Language.
Accessibility
If you are unable to use this file in its current format, please select the Contact Us link and we can modify it to make it more accessible to you.