Tektites

Stratigraphic relations of australites in the Port Campbell Embayment, Victoria

“…From his intimate knowledge of the occurrence of the tektites acquired in the course of decades of field work, combined with the excellent preservation of some specimens, Baker (1959Baker ( , 1962 concluded that the Port Campbell australites fell to Earth no more than -20 000 years ago and now lie close to where they fell. This conclusion was supported by further stratigraphic investigations by Baker's colleague Edmund Gill (1965a,b, 1970.…”

Australites from Nurrabiel, Western Victoria

“…The specimens are rather worn compared with many of the wellpreserved, excellent specimens recovered from the Port Campbell district (Baker, 1937;1940a;1940b;1944;1946;1957;1959a ; 1960b; 1961a; 1962), and the Moonlight Head district (Baker, 1950) on the south coast of Western Victoria. This is largely because they have been exposed to abrasion by quartz sand drifting over them.…”

“…Baker, 1955a (Baker,19(>1i>) which has accentuated the sub-surface internal sehlieren, and removed all but traces of the originally sharp-crested How ridges that are so well developed on excellentlv preserved australites (cf. Baker, 1944;1959a;1961A;1962 (Baker, 1956) The core of a round form (Plate III., Fig F) Dumbbell -shaped form.…”

“…The dumbbell-shaped form (Plate IV., Figs. A to C) has been subjected to fairly considerable natural flaking of the equatorial regions and anterior surface, producing a marked flaked equatorial zone ( Baker, 1940, p. The walls of internal bubbles in australites invariably reveal a highly vitreous lustre ( tk hot polish ") in the freshly exposed condition (Baker, 1959a;1961b (Baker, 1958 (Baker, 1958), is best explained in the same way as for the clockwise helical spiral flow ridge developed on a perfectly preserved, complete, flanged oval australite from Port Campbell, Victoria (Baker, 1961a (Baker, 1959, Fig. 15, p. 67).…”

Structures of Well Preserved Australite Buttons from Port Campbell, Victoria, Australia

“…There is also a wide range of fragments broken from these various shape types, including complete detached circumferential flanges that are mainly circular and rarely oval in outline, fragments of flanges, fragments of lens-like body cores and of boatshaped, oval, dumbbell, canoe, teardrop and originally hollow round and elongated forms (cf. Baker 1937Baker , 1940aBaker , 1940bBaker , 1946Baker , 1955aBaker , 1956Baker , 1957Baker , 1959aBaker & b, 1961aBaker and Forster 1943).…”