Ship Mountains Megabreccia: Implications for Miocene Extensional Tectonics, Eastern Mojave Desert, California

Autor:	W. C. James, Martin A. Knoll, Kevin L. Mickus
Rok vydání:	1993
Předmět:	Dike geography geography.geographical_feature_category Geochemistry Geology Landslide Headwall Basement (geology) Breccia Extensional tectonics Horst Fault block Geomorphology
Zdroj:	The Journal of Geology. 101:115-120
ISSN:	1537-5269 0022-1376
DOI:	10.1086/648200
Popis:	The megabreccia of the Ship Mountains is part of a sedimentary sequence displaying characteristics of a catastrophic landslide deposit: (1) fractured clasts; (2) a graded, fine-grained upper mantling layer; (3) sandstone dikes injected from below; (4) fine-grained, massive matrix; and (5) local, monolithologic character. Its presence downslope from the headwall of a large Miocene normal fault, and correlation of breccia clasts with basement lithologies in the headwall area, further support the landslide hypothesis. This interpretation has important implications for the structural evolution of the area, suggesting two major phases of fault block rotation associated with extensional stresses along the western flank of the Old Woman Mountains structural horst.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::f38d4f9e4846a6a58a9230a279485532 https://doi.org/10.1086/648200 Zobrazit plný text záznamu