Note to users. If you're seeing this message, it means that your browser cannot find this page's style/presentation instructions -- or possibly that you are using a browser that does not support current Web standards. Find out more about why this message is appearing, and what you can do to make your experience of our site the best it can be.

Science 4 October 1968:
Vol. 162. no. 3849, pp. 121 - 122
DOI: 10.1126/science.162.3849.121
Prev | Table of Contents | Next

Articles

Guatemela: Preliminary Zircon Ages from Central Cordillera

David N. Gomberg 1, Philip O. Banks 1, and Alexander R. McBirney 2

1 Department of Geology, Case Western Reserve University, Cleveland, Ohio
2 Department of Geology, University of Oregon, Eugene

Concordia resolution of uranium-lead analyses of zircons from rocks of the Guatemalan Cordillera indicates a period of plutonism, and perhaps metamorphism, in late Paleozoic times (345 ± 20 million years). Gneisses of the Chuacus Series yield an age of 1075 ± 25 million years which may be either the age of a source terrain for the original sediments, or the age of principal metamorphism. Zircons from a Paleozoic granite intruding the gneisses appear to contain inherited or contaminating material acquired during the process of magma generation or emplacement, or both.


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Geological evolution of the NW corner of the Caribbean Plate.
R. A. Valls Alvarez (2009)
Geological Society, London, Special Publications 328, 205-217
   Abstract »    Full Text »    PDF »
The North American-Caribbean Plate boundary in Mexico-Guatemala-Honduras.
L. Ratschbacher, L. Franz, M. Min, R. Bachmann, U. Martens, K. Stanek, K. Stubner, B. K. Nelson, U. Herrmann, B. Weber, et al. (2009)
Geological Society, London, Special Publications 328, 219-293
   Abstract »    Full Text »    PDF »
U-Pb zircon geochronology of Palaeozoic units in Western and Central Guatemala: insights into the tectonic evolution of Middle America.
L. A. Solari, F. Ortega-Gutierrez, M. Elias-Herrera, P. Schaaf, M. Norman, R. T. de leon, C. Ortega-Obregon, M. Chiquin, and S. M. ical (2009)
Geological Society, London, Special Publications 328, 295-313
   Abstract »    Full Text »    PDF »
Middle-Late Ordovician magmatism and Late Cretaceous collision in the southern Maya block, Rabinal-Salama area, central Guatemala: Implications for North America-Caribbean plate tectonics.
C. Ortega-Obregon, L.A. Solari, J. D. Keppie, F. Ortega-Gutierrez, J. Sole, and S. Moran-Ical (2008)
Geological Society of America Bulletin 120, 556-570
   Abstract »    Full Text »    PDF »
Metallogenesis of the Caribbean region.
S. E. Kesler (1978)
Journal of the Geological Society 135, 429-441
   Abstract »    PDF »


To Advertise     Find Products

Science. ISSN 0036-8075 (print), 1095-9203 (online)