🚀 go-pugleaf

	Someone recently brought up the question of the origin of
tektites having heard only of the original hypothesis of their being
from the Moon. I have not read the pertinent references yet (appended
below) but wonder if the question is completely closed considering the
statement in Hartmann (p. 177) "Their origin is very mysterious." That
is, assuming as is presently thought that they are debris from
terrestrial impacts and represent terrestrial material ejected to a
high altitude, has the dynamics of such been properly modelled? Also,
even though a meteorid impact produces debris primarily that of the
target surface, there must be a small percentage from the original
projectile. Have no tektites been shown to be of meteoric origin in
composition? 

Faul, H., Tektites are terrestrial, Science, 152, 1341, 1966.

O'Keefe, Tektites, U. of Chicago Press, 1963
   "	, The Tektite problem, Scientific American, February, p. 116,
	1976. 

Taylor, S. R., and M. Kaye, Genetic significance of the chemical
	composition of tektites: a review, Geochim/Cosmochim Acta, 7, 34,
	1969.

Hartmann, Moons and Planets, 3rd edition, Wadsworth, 1993.



Joseph Cain		cain@geomag.gly.fsu.edu   
cain@fsu.bitnet		scri::cain
(904) 644-4014		FAX (904) 644-4214 or -0098