Browsing Faculty Research Publications (College of Earth, Ocean, and Atmospheric Sciences) by Subject "Geochronology"

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Age of the Batoka basalts, norther Zimbabwe, and the duration of Karoo Large Igneous Province magmatism

Jones, D. L.; Duncan, Robert A.; Briden, J. C.; Randall, D. E.; MacNiocaill, C. (American Geophysical Union, 2001-02-12)

Analysis of the Bakota basalts exposed in the Zambezi Gorge some 40 km east of Victoria Falls characterizes them as high Fe, moderately high Ti, and low K, P, and Zr tholeiites. The ⁴⁰Ar-³⁹Ar age determinations are tight ...
Geochronology and paleoclimatic implications of the last deglaciation 2 of the Mauna Kea Ice Cap, Hawaii

Anslow, Faron S.; Clark, Peter U., 1956-; Durz, Mark D.; Hostetler, Steven W. (Elsevier, 2010)

We present new 3He surface exposure ages on moraines and bedrock near the summit of Mauna Kea, Hawaii, which refine the age of the Mauna Kea Ice Cap during the Local Last Glacial Maximum (LLGM) and identify a subsequent ...
Spatial and temporal distribution of a C-like asthenoshpheric component in the Rano Rahi Seamount Field, East Pacific Rise, 15°-19°S

Hall, L. S.; Mahoney, J. J.; Sinton, J. M.; Duncan, Robert A. (American Geophysical Union, 2006-03-28)

Lavas of the Rano Rahi seamount field define a Nd-Pb-Sr isotopic array that connects, and substantially overlaps, the arrays of the nearby East Pacific Rise axis and 5.6–28 Ma lavas of the Pukapuka ridge system, situat ...