Salt Layers in West Texas
Ü200,000 doublet layers of CaCO3 and CaSO4.
ÜCorrelated up to 40 miles apart
ÜAverage total thickness is 1300 feet
ÜEach layer < 0.1Ó thick.
ÜLooks like a summer-winter phenomenon, implying at least 200,000 years.
ÜNeed to evaporate a million feet of seawater for this!