[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
More tektite questions
Hello Henry, hello David, hello List!
Are you sure you are not talking about lechatelierite inclusions in
indochinites?
Best regards, Bernd
-------- snip ----------
KINNUNEN K.A. (1990) Lechatelierite inclusions in indochinites* and the
origin of tektites (Meteoritics 25-3, 1990, pp. 181-184):
A new hypothesis on tektite genesis to explain the lechatelierite
parentage can be advanced on the basis of the observations and premises
outlined here. It relies on the stages of impact cratering as described
at length by Melosh (1989). In the first compression stage, the
meteorite or comet impact fused the uppermost vegetable layer (mainly
forests) and soils contaminated with detrital** minerals together. In
the second stage, this material, liquified through vaporization and
shock melting, was ejected in the vapor plume. In the third stage, the
expansion of the vapor plume threw the melt droplets in ballistic
trajectories and finally produced the large strewn fields. According to
this model, tektites incorporated considerable amounts of the uppermost
vegetation and soil layers during the initial stages of impact
cratering. (p. 183)
* The material consisted of 20 tektite specimens from the Khorat Plateau
area, northeastern Thailand
** detrital = any disintegrated material; debris (Random House Webster’s
Dictionary / CD ROM)
Follow-Ups: