Revised age of the Rockland tephra, northern California: Implications for climate and stratigraphic reconstructions in the western United States: Comment
Geology
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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 |
|---|---|
| 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 |