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Correlation of the Peach Springs Tuff, a large-volume Miocene ignimbrite sheet in California and Arizona

January 1, 1986

The Peach Springs Tuff is a distinctive early Miocene ignimbrite deposit that was first recognized in western Arizona. Recent field studies and phenocryst analyses indicate that adjacent outcrops of similar tuff in the central and easten Mojave Desert may be correlative. This proposed correlation implies that outcrops of the tuff are scattered over an area of at least 35 000 km2 from the western Colorado Plateau to Barstow, California, and that the erupted volume, allowing for posteruption crustal extension, was at least several hundred cubic kilometres. Thus, the Peach Springs Tuff may be a regional stratigraphic marker, useful for determining regional paleogeography and the time and extent of Tertiary crustal extension.

Publication Year 1986
Title Correlation of the Peach Springs Tuff, a large-volume Miocene ignimbrite sheet in California and Arizona
DOI 10.1130/0091-7613(1986)14<840:COTPST>2.0.CO;2
Authors A. F. Glazner, J. E. Nielson, K. A. Howard, D. M. Miller
Publication Type Article
Publication Subtype Journal Article
Series Title Geology
Index ID 70014484
Record Source USGS Publications Warehouse