the composition of the Buru tempers, so rich in detritus from
metamorphic rocks, is unique to date in Oceania, and implies a local
indigenous origin for the Buru sherds, which presumably derive from
northeatern Buru where basement rocks of continental affinity are exposed.
this is in effect a displaced and deformed westerly prong of the New Guinea
appendage to the Australian continental mass.
The terrigenous fraction in the one beach sand temper (BX-46) was apparently derived from the same kinds of bedrock sources as the fluvial sand tempers.