Studies on Radical Chain Reaction of Degradation

K-Ar dating by smectite extracted from bentonite formations

“…Illite layers are recrystallized by the dissolution and precipitation of illite layers if smectite layers fall below 50% [1]. I/S, which consists of large concentrations of expansive layers, grows large crystals with the dissolution and precipitation of small particles, and the degassing of Ar from smectite with ages less than 40 Ma occurs at very small concentrations.…”

“…Also, illite layers crystallized from smectite layers progress with the potassium fixation process in the interlayer increases with formation temperature. The potassium fixation at early alteration mainly occurs by the solid-solid exchange, and the reaction progresses the dissolution-precipitation reaction and increases the illite layers [1]. The mixed layer clay that consists of 80% smectite and 20% illite layers (g = 0) (I/S) is generally identified as pure smectite, and it is rare for smectite to not have potassium.…”