Brenson.—Structural Features of the Margin of Australasia. 125 
appears to have broken down, there being no community of Eocene marine 
fauna, though the continuance of connections with the north-west is indi- 
cated by the New Guinea, Malayan, and Asiatic relations of the species 
of Foraminifera which occur in the New Caledonian Eocene beds,* but 
are unrepresented in New Zealand. These are, however, the latest of the 
the overthrusting is not developed as extensively as in Timor, the Permian 
Glasser’s (1903-4) account), (fig. 4). I regions, perhaps those 
buttressed by subjacent relatively rigid masses of older folded rocks, the 
Tertiary f more or less symmetrical, but along the east coast a 
Lower Triassie times and in the Middle Eocene. The last great movement 
of approximately Miocene age was accompanied by the injection into the 
crust of vast amounts of ultrabasic magma, which is now exposed in large 
or small masses of peridotite throughout the island. 
Concerning the subsequent movements of the crust little detailed infor- 
mation is available to the writer.  Coral-reefs, raised from 6 ft. to 20ft., 
surround the island, and in general there seems to be a slight tilting move- 
ment in progress, a subsidence in the partially drowned western coast, and 
(at least in earlier Pleistocene times) an elevation on the eastern. This 
is further exemplified by the uplift of the coral-limestone of the Isle of 
Pines in the south-eastern extremity (Compton, 1917), and of the Loyalty 
Islands still farther to the east. This elevation Andrews (1922) believes 
to be due to Recent crust-movements independent of and more vigorous 
than those of New Caledonia. Thus the whole New Caledonian ridge can 
* As the list of the Eocene fossils of New Caledonia is not readily accessible in New 
(1 
and Piroutet (1917). The forms marked with an asterisk (and possibly others also) 
are known in the Eocene rocks of New Guinea and the Malay Archipelago: ho- 
phragmina cf. ch wi,* О. discus, О. dispansa,* О. javana var. minor,* O. lanceolata, 
O. cf. multiplicata, O. nummulitica ?, О. pentagonalis, О. cf. pratti, О. cf. sella,* O. stella, 
О. stellata, О. umbilicata,* О. cf. varians, Nummulites baguelensis,* N. nanggoulini,* 
N. jogjakartae,* N. striatus, i i eolina 
Discocyclina, Miliola ( Pentellina), and Operculina, together with some bryozoa, 
Prenaster cf. alpinus, Spatangus, and Lithothamnium nwmmulitica. 
