Reinterpretation of the stratigraphy and structure of the Rancho Las Norias area, central Sonora, Mexico
Journal of South American Earth Sciences
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Abstract
New geologic mapping and fossil data in the vicinity of Rancho Las Norias, 30 km east of Hermosillo, Sonora, Mexico, show that rocks previously mapped as Precambrian instead are Paleozoic. Previous geologic maps of the Rancho Las Norias area show northeast-directed, southwest-dipping reverse or thrust faults deforming both Precambrian and Paleozoic rocks. The revised stratigraphy requires reinterpretation of some of these faults as high-angle normal or oblique-slip faults and the elimination of other faults. We agree with earlier geologic map interpretations that compressional structures have affected the Paleozoic rocks in the area, but our mapping suggests that the direction of compression is from southeast to northwest. Published by Elsevier Ltd.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Reinterpretation of the stratigraphy and structure of the Rancho Las Norias area, central Sonora, Mexico |
| Series title | Journal of South American Earth Sciences |
| DOI | 10.1016/j.jsames.2003.07.002 |
| Volume | 16 |
| Issue | 6 |
| Year Published | 2003 |
| Language | English |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | Journal of South American Earth Sciences |
| First page | 523 |
| Last page | 540 |
| Google Analytic Metrics | Metrics page |