HORIZONTAL MOVEMENT OF GEANTICLINES 575 
Letti of the Sermata group, and in the neighborhood of the bending- 
point we observe the northern, non-harmonic position of the small 
island Kisser which is covered by elevated reefs and surrounded by 
deep seas. ‘There is here again the evidence that bending of the 
geanticline at greater depth is accompanied by transverse fractures 
near the surface. The fractures which occur farther to the east 
and their connection with the sharp bending in the 200 m. contour 
line of the Sahul shelf has already been discussed in earlier papers. 
- Still another example 
is found between Ceram Citta, 
ee Se 
very striking irregular- 5 a SSN : 
ity in this portion of the a ge Ee SM 2 
geanticline is the narrow an % “arp ae 
Manipa Strait, nearly e 
5,000 m. deep between 
Ceram and Buru, here 
also near the bending- 
point of the horizontal 
projection of the geanti- Rue, Via JOE 
clinal axis. If this 
bending-point is not so 
clearly visible in the Fic. 8.—I, The deep Manipa Strait (+4800 m.) 
present topography for between Ceram and Buru. 1000, 4000, submarine 
p) 
ih Th Wat contours. IJ, Geanticlinal axis with strong trans- 
the reason that the 1rac- ors dislocations near the bending-point. 
ture movements are very 
strong, it may be inferred from the strike of the Tertiary moun- 
tain range. In West Buru and in the greater part of Ceram 
this strike is about NW.—SE., whereas in West Ceram and in 
the islands between Ceram and Buru it is E. NE., and NE. 
strikes also have been observed (cf. Fig. 1).2 Thus the Tertiary 
mountain range displays a considerable bending from Ceram to 
Buru. As we have pointed out, the strike of the folds and the 
overthrusts of the Tertiary phase of crustal movement, and 
=H. A. Brouwer, Joc. cit. 
2L. Rutten and W. Hotz, “ De geologische Expeditie naar Ceram,” T'ydschr. Kon. 
Ned. Aardr. Gen., Vol. XXXVI (1919), 9° Verslag. 
