[EMAIL PROTECTED] wrote:
Here on Earth, The Vredefort Dome and Sudbury (Sudbury breccia) structures are the type areas for this unusual rock type called pseudotachylite but it has also been observed in other impact structures (Rochechouart, Manicouagan, Slate Islands).
Pseudotachylites are not *just* impact-specific fault melts. They may also form along TECTONIC fault planes here on earth and I have heard of them associated with mass-wasting deposits.
Matt
Best wishes,
Bernd
References:
ST�FFLER D. et al. (1991) Proposal for a revised petrographic shock classification of chondrites (Meteoritics 26-4, 1981, A398-A399).
BEGEMANN F. et al. (1992) On the thermal history of heavily shocked Yanzhuang H-chondrite (Meteoritics 27-2, 1992, 174-178).
XIANDE X. et al. (1991) The new meteorite fall of Yanzhuang, a severely shocked H6 chondrite with black molten materials (Meteoritics 26-4, 1991, A411).
FRENCH B.M. (1998) Traces of Catastrophe (LPI Contribution 954, pp. 65-69).
RUBIN A.E. (2003) Post-shock annealing and post-annealing shock: implications for the thermal and shock histories of ordinary-chondrite parent bodies (Lunar and Planetary Science XXXIV (2003), 1263.pdf).
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