On graduating, he then completed his master's degree conducting field and laboratory research on the geological properties of the You Yangs to the southwest of Melbourne, through which he became known for "his meticulous thoroughness, his dependability, and his courage in overcoming difficulties.

While the button-like presentation of many australites fuelled early conjecture about their human-made origins, scientific analysis established these objects are formed from the molten, terrestrial debris ejected during meteorite impacts.

"[2] Indeed, some Aboriginal groups in Western Australia and the Nullabor Plains directly associated tektites with meteors and cosmic impacts - the "sky stones" were "valuable to Indigenous cultures as surgical tools and implements for use in ritual and ceremony.

[1] Besides being famous for his extensive work on one major 'mystery' topic, teckites, George became the stratigraphic author/founder of a lesser mystery, the Garie Formation in the middle of the Narrabeen Group, Sydney Basin coastal area.

The nature of the bed has continued to puzzle geologists ever since and is still not solved but it recognition has been extended west to the area around Wentworth Falls in the sparsely "oolitic" Hat Hill Claystone member.