Late Cretaceous to early Tertiary ductile deformation: Catalina-Rincon metamorphic core complex, southeastern Arizona
Detailed mapping and kinematic analysis have revealed east-vergent Late Cretaceous to early Tertiary ductile deformation in the eastern Santa Catalina Mountains within the Catalina-Rincon metamorphic core complex. A gently dipping tectonite fabric formed concurrently with greenschist to amphibolite facies metamorphism in Precambrian through Upper Cretaceous sedimentary and plutonic rocks. The tectonites contrast in age, lineation orientation, shear sense, and deformational style with younger mid-Tertiary mylonites that are kinematically coordinated with the detachment fault. The Late Cretaceous to early Tertiary deformation may reflect crustal thickening prior to mid-Tertiary extension of the complex.
- Research Organization:
- Univ. of Arizona, Tucson (USA)
- OSTI ID:
- 5276439
- Journal Information:
- Geology; (United States), Journal Name: Geology; (United States) Vol. 15:5; ISSN GLGYB
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
580100* -- Geology & Hydrology-- (-1989)
ARIZONA
CENOZOIC ERA
CRETACEOUS PERIOD
DEFORMATION
FEDERAL REGION IX
GEOLOGIC AGES
GEOLOGIC DEPOSITS
GEOLOGIC FAULTS
GEOLOGIC FRACTURES
GEOLOGIC HISTORY
GEOLOGIC STRUCTURES
IGNEOUS ROCKS
MAPPING
MESOZOIC ERA
METAMORPHIC ROCKS
MOUNTAINS
NORTH AMERICA
PLUTONIC ROCKS
ROCKS
SEDIMENTARY ROCKS
TECTONICS
TERTIARY PERIOD
USA