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                                      March 24, 1977



Dr. E.D. Gill
1/47 Wattle Valley Road
Canterbury, Victoria
Australia  3126

Dear Ed,

    This monograph on occurrence, distribution, and age of Australian tektites has stimulated a spirited response from Bill Glass. I enclose the copy of a MS he has submitted to Bull. Geol. Soc. America, and our tentative reply. I would welcome any comments or suggestions you care to make. In addition, I would like to draw on your knowledge of Australian Pleistocene stratigraphy to ask whether it is possible, within the australite strewnfield, to identify strata at about the 700,000 year BP horizon that Bill Glass invokes as the ultimate source of the australites. If this horizon could be identified and shown not to contain australites (or microtektites), this might help to convince Dr. Glass and others of the fallibility of their arguments. 

     With best regards.

                        Sincerely yours,
                    

                        Brain Mason
                        Curator
                        Department of Mineral Sciences 
Enclosures

BM/ks
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