108 Transactions. 
These orogenic movements were followed by long-continued denudation 
and widespread transgression of the 
petroliferous later Tertiary rocks, Globigerina limestones, and terriginous 
‘Thus in south-western Celebes, 
probably a short time before the deposition of the Tertiary limestone 
(‘ partly Eocene and partly Miocene ’) had completely terminated, eruptions 
began all along the western side . which gave rise to the high 
western mountains ; for the greater part they consist of tuffs, breccias, 
volcanic conglomerates, of andesites, basalts, and also of leucite-rocks,”’ 
while intrusive essexitic and shonkinitic rocks also occur. Farther north 
in the same island, however (the Latimodjong Range), the eruptions seem 
to have stopped before the newer Tertiary period. Leucitic rocks are 
also known to belong to the younger Tertiary formation in Sumbawa 
(Brouwer, 19172). 
e disposition of these formations renders clear the extent and nature 
of the Plio-Pleistocene crustal movements. "The presence of uplifted fringing 
reefs is seen in nearly all the islands, where they sometimes form definite 
$ ере the amount of the uplift being occasionally as much as 
000 ft. 
ing à 
thus giving rise not merely to differential uplift of the forward and rear 
