USGS · 70209117
Age of first marine terrace near Santa Cruz, California
Abstract
Five species of shallow neritic Pleistocene mollusks from a central California marine terrace give these Th 230 /U 238 ages: 88,000; 68,000; 76,000; 16,000; 100,000; 91,000 (from data in Blanchard and others, 1967). With one exception, the ages fall between 68,000 and 100,000 years. This broad grouping of ages, its general agreement with dates from elsewhere, and geologic evidence suggest that the sea was relatively high in central California sometime during this interval.
Explore related subjects
Keep this discovery
Explore connections, maps & timelines
W.C. Bradley, Warren O. Addicott. 1968. Age of first marine terrace near Santa Cruz, California. https://doi.org/10.1130/0016-7606(1968)79%5B1203%3Aaofmtn%5D2.0.co%3B2
Cite the original work for its findings. Save a collection to share your selection of sources.