1) Geology and Geophysics Department, Texas A&M University, College Station, Texas 77843, USA, 2) New Mexico Bureau of Geology and Mineral Resources, Socorro, New Mexico 87801, USA
Geological Society of America Bulletin (2015), V127(5-6), pp770-780, doi: 10.1130/B31146.1
Tephrochronology and geochemistry of Eocene and Oligocene volcanic ashes of east and central Texas
Mindi L. Heintz (1), Thomas E. Yancey (1), Brent V. Miller (1) and Matthew T. Heizler (2)
New single-crystal sanidine 40Ar/39Ar dates of 12 middle Eocene to Oligocene rhyolitic volcanic ash beds of the Texas coastal plains range from 30.64 ± 0.03 Ma (lower Catahoula Formation) to 41.841 ± 0.016 Ma (lower Crockett Formation). These dates are from Texas coastal plains strata in the Crockett marine transgression and the Yegua and Jackson depositional wedges.
- Noble Gas MS
- Helix MC Plus
- Ar isotopes
- Volcanic Ashes
United States
