0IntroductionThe tektites are widely accepted as glassesformed by melting of terrestrial continental crust dur-ing meteoritic or cometary impacts(Blum et al.,1992).They were reported as the Australasian tektites in fourforms,Muong Nong-type,intermediate type,splash-form type,and microtektites.The Australasiantektite strewn field covers an immense area extendingfrom southern China to Indochina,the Philippines,Malaysia,Indonesia,and Australia.Microtektites be-longing to this strewn ......(论文页数是:6页) ,泰语毕业论文,泰语论文 |