A CENTRAL AFRICAN GLACIER OF TRIASSIC AGE 699 

 CLIMATIC CONDITIONS 



Dr. Ulrich is inclined to believe the fossils indicate cool waters, 

 and the writers think that, while the glacial conditions were induced 

 partially by the altitude of the region in which they formed, they 

 were largely due to climatic changes. At present, due to faulting 

 comparatively recent in the geological sense, some of the mountains 

 between the Lualaba River and Lake Tanganyika are 9,000 feet 

 high. It is doubtful whether as great elevations existed in the 

 Maniema during Lubilache time. 



LOCATION OP THE GLACIER 



The position of the glacier can be located only in a most general 

 way. It appears to have been south of the Maniema. 



The disappearance of the glacial conglomerate and the iceberg- 

 borne bowlders to the north indicates that the source of the glacial 

 material was to the south. Of similar import is the fact that the 

 supposed glacial striations have a north-and-south orientation, 

 while the concavity of the crescentric gouges indicates a move- 

 ment from south to north. 



Toward the south the work of the writers extended only to the 

 fifth parallel. Professor Cornet's work in 1901-3 was within the 

 Katanga, between latitudes 8° and 12° S. and longitudes 28° to 23° 

 31' E. Between Professor Cornet's work and the fifth parallel, lies 

 a considerable area in which the geology has not been studied even 

 in reconnaissance. 



To the southeast of Kabambare are mountains where these 

 glaciers probably existed in Lubilache time, reaching today eleva- 

 tions of 9,000 feet; in Lubilache time they were presumably not 

 so high. The Luama River heads in these mountains, and as the 

 erratic bowlders are found along its course, as well as that of the 

 Lualaba, it is possible that the valley then existed and that the 

 glacier pushed north and then west and northwest from these 

 mountains to the Lualaba. 



Another possible but not probable location of the glaciers is 

 found in the mountains to the northeast of Kasongo, the glaciers 

 descending the Lulindi River to the Lualaba, thence being deflected 

 northward along its valley. Northwest of Neimbo (Fig. 2) and 



