The different age of various granite occurrences in sumba timor,flores,alor and wetar clearly represants the differences in geologi and structure of the islands.VAN BEMMELEN has assigned the age of latr-mesozoic to those of sumba ,middle-tertiary to those of flores and late-tertiary to those of alor and wetar .the granites of timor have been grouped…
The sand deposite there are found in the form of flat dunes whices consist of the frontal and the back dunes. The depressions between both dunes is covered by swamps. Where these swamps are lacking the vegetal cover is mostly luxurious. The most promising are the frontal dunes. Consequently only these were investigated.
The tectonic framework of Indonesia is complicated by interaction of the Eurasian continental, the Indian oceanic and the Australian continental as well as the Pacific• Philippine oceanic plates. During Late Palaeozoic-Early Cainozoic time, the region of western Indonesia (Kalimantan, …
Metallogenetic concept on mineral deposits of Indonesia as proposed by WESTERVELD is reviewed.
Depsite its general validity and practical applicability, certain geological phenomena and mineral occurrences seem to contradict the concept and therefore revisions are suggested A Metallic mineral distribution map with a scale 1:5000.000 accompanies thi…