Revised age of the Rockland tephra, northern California: Implications for climate and stratigraphic reconstructions in the western United States: Comment
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Abstract
Lanphere et al. (1999) presented new data for the age of the Rockland pumice tuff breccia of Wilson (1961) using the incremental-heating 40Ar/39Ar technique. Their age, ∼610 ka, is ∼200 ka older than zircon fission-track ages obtained on this tuff by Meyer et al. (1980; 1991). Application of new 40Ar/39Ar technologies to tephrochronometry is an important advance that allows more precise dating of widespread tephra layers. Although the new age may be correct, I urge caution in accepting it in place of grain-discrete fission-track dates and other data that suggest a younger age for this unit.
Study Area
Publication type | Article |
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Publication Subtype | Journal Article |
Title | Revised age of the Rockland tephra, northern California: Implications for climate and stratigraphic reconstructions in the western United States: Comment |
Series title | Geology |
DOI | 10.1130/0091-7613(2000)28<286:RAOTRT>2.0.CO;2 |
Volume | 28 |
Issue | 3 |
Year Published | 2000 |
Language | English |
Publisher | Geological Society of America |
Contributing office(s) | Geology, Minerals, Energy, and Geophysics Science Center |
Description | 1 p. |
First page | 286 |
Country | United States |
State | California |
Other Geospatial | Rockland tephra |
Google Analytic Metrics | Metrics page |