Computer Science
Scientific paper
Sep 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989e%26psl..94..425d&link_type=abstract
Earth and Planetary Science Letters, Volume 94, Issue 3-4, p. 425-440.
Computer Science
10
Scientific paper
We present an analysis of the thermal evolution of the metamorphic core complex of the Santa Catalina Rincon and Tortolita Mountains in South Arizona. The structural and kinematic data are briefly reviewed. Granite mylonites result from three successive shearing events, respectively compressional top-West during Paleocene and top-NE during mid-Eocene, and extensional top-SW after Eocene. In a preliminary part of the paper, available radiometric data are reviewed in detail for both deformed and undeformed granites with closing temperatures from 565 to 105°C. These data are then used to constrain the temperature history for three intrusions which were emplaced respectively during Paleocene, Eocene and Miocene times. The general temperature-time curve shows (1) rapid cooling for the three intrusions just after emplacement, and (2) a large and rapid cooling of the entire complex between 35 and 22 Ma from 530° to 100°C. In the final part, this thermal history is used to constrain the tectonic history of the metamorphic core complex. The thermal effects of erosion, tectonic denudation, homogeneous and heterogeneous thinning are computed using a finite difference scheme in one dimension. An analysis of the parameters involved in the models shows that the crust of the Santa Catalina metamorphic core complex has undergone mainly a thinning of its upper part of at least 15 km, and more reasonably 20-25 km, in less than 10 Ma. This estimation is discussed considering thermal effects of magmatism.
Brun Jean-Pierre
Davy Philippe
Guérin Gwénaël
No associations
LandOfFree
Thermal constraints on the tectonic evolution of a metamorphic core complex (Santa Catalina Mountains, Arizona) does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Thermal constraints on the tectonic evolution of a metamorphic core complex (Santa Catalina Mountains, Arizona), we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Thermal constraints on the tectonic evolution of a metamorphic core complex (Santa Catalina Mountains, Arizona) will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-764656