GEOLOGICAL ROUTE THROUGH ASIA MINOR 73 



to Yuzgad, rocks of Eocene facies were constantly in sight, the 

 immediate vicinity of Boghaz Koi making the only serious inter- 

 ruption. In the immediate vicinity of Aktche Koyiin our route 

 took us out of this Eocene area into the lacustrine plain which so 

 often accompanies the larger rivers of Anatolia. 



The rocks of Eocene facies dip at various angles, and do not 

 seem to be entirely conformable. However, as in unquestionably 

 conformable series in that vicinity the dips and strikes often 

 change very abruptly, I should not dare to say that more than one 

 period is represented. One may take, for instance, the case 

 sketched here. This is a frontal view of a bluff, past which the 



Fig. 5. — Frontal view of a bluff a short distance east of Alembeyli, showing very 

 rapid change in dip of the strata. The stippled layers represent gypsum; the rest is 

 sandstone. The road passes through the right-hand depression. (Somewhat dia- 

 grammatic.) 



road ran (through the central gap, in fact). The entire part of 

 the ridge shown in the figure was but a few rods long, and as one 

 can see, the dip of the strata has changed considerably. Actually 

 aside from this anticlinal structure the whole series dipped away 

 moderately. At this particular point, near Alembeyli, there was 

 some tendency for the dips to be moderate and easterly. South- 

 west of Aktche Koyiin the dips of the nearer strata were about 

 the same, but some strata were seen dipping at angles of over 45 . 

 As already mentioned the two sets appeared unconformable but 

 this may have been because of inability to see the intermediate 

 rocks. 



At Sungurlu, at the east end of the village, there is a thin bed 

 of plant remains, but they proved too fragile for transport. 



BOGHAZ KOI 



The dominant rock at Boghaz Koi is a marble breccia," with a 

 bright red cementing material, making a striking pattern. Occa- 

 sionally the marble is more massive, and then may appear either 



