Igneous Activity, Tectonics, and Hydrothermal Precious-Metal Mineralization in the Great Basin During Cenozoic Time (ded5172f-35d2-4cde-8ef6-3f98145fe313)
- Organization:
- The American Institute of Mining, Metallurgical, and Petroleum Engineers
- Pages:
- 11
- File Size:
- 794 KB
- Publication Date:
- Jan 1, 1977
Abstract
Three, major suites of igneous rocks were erupted in the Great Basin in middle and late Cenozoic time. The first resulted in eruption of andesitic rocks in the northern Great Basin between 42 and 34 m.y. ago. Between 34 and 17 m.y. ago this igneous activity migrated to the southwest, ending about 17 m.y. ago with the onset of crustal extension and north-south- trending Basin and Range (rift) faulting. The second volcanic suite erupted between 17 and 8 m.y. ago in the northern Great Basin. The third volcanic suite consists of andesitic and rhyolitic lavas and some basalt erupted between 22 to 7 m.y. ago in the western Great Basin along the northwest transcurrent Walker Lane fault zone. Hydrothermal ore deposits are associated with all suites of igneous rocks.
Citation
APA: (1977) Igneous Activity, Tectonics, and Hydrothermal Precious-Metal Mineralization in the Great Basin During Cenozoic Time (ded5172f-35d2-4cde-8ef6-3f98145fe313)
MLA: Igneous Activity, Tectonics, and Hydrothermal Precious-Metal Mineralization in the Great Basin During Cenozoic Time (ded5172f-35d2-4cde-8ef6-3f98145fe313). The American Institute of Mining, Metallurgical, and Petroleum Engineers, 1977.