Evolving Subduction Zones in the Western United States, as Interpreted from Igneous Rocks

Autor:	Harold J. Prostka, Robert L. Christiansen, Peter W. Lipman
Rok vydání:	1971
Předmět:	Igneous rock Multidisciplinary Continental margin Subduction Andesite Geochemistry Mesozoic Eclogitization Cenozoic Geology
Zdroj:	Science. 174:821-825
ISSN:	1095-9203 0036-8075
DOI:	10.1126/science.174.4011.821
Popis:	Variations in the ratio of K(2)O to SiO(2) in andesitic rocks suggest early and middle Cenozoic subduction beneath the western United States along two subparallel imbricate zones dipping about 20 degrees eastward. The western zone emerged at the continental margin, but the eastern zone was entirely beneath the continental plate. Mesozoic subduction apparently occurred along a single steeper zone.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9716f4839bdac9c419a7178d1416a069 https://doi.org/10.1126/science.174.4011.821 Zobrazit plný text záznamu