Abstract
SHS investigation development is considered from the geographical and historical viewpoint. 3 stages are described. Within Stage 1 the work was carried out in the Department of the Institute of Chemical Physics in Chernogolovka where the scientific discovery had been made. At Stage 2 the interest to SHS arose in different cities and towns of the former USSR. Within Stage 3 SHS entered the international scene. Now SHS processes and products are being studied in more than 50 countries.
Abstract
The aim of this chapter is to provide an updated review of the available data
concerning the confirmed and proposed meteorite falls and finds and their impact
craters in Egypt, Sudan, and Libya. Among the 190 confirmed impact/sites on the Earth
crust, only less than 8 have been identified in northeast Africa, in particular, BP and
Oasis in Libya and Kamil in Egypt. Very few other structures of alleged impact are
located in these countries have been described in the literature. The record of
meteorites and their impact craters in North East Africa are still incomplete and
debated. The only criteria that provide evidence of an impact are the occurrence of
circular geological features and their shock-metamorphic effects on the target rocks
(shatter cones and diagnostic shock-metamorphic mineral deformations). These effects
are evident in the Kamil crater (Egypt) and most impact craters in Libya. The discovery
of preserved meteorite fragments and the detection of the geochemical signature of
meteoritic indicators should be considered carefully during fieldwork and advanced
further studies.
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Authors:Bentham Science Books