252 COL. T. ENGLISH ON THE EOCENE AND [Aug. I904, 



Kara Burnu, skirts Marmora Island, and, turning eastward, forms 

 the southern border of the Marmora depression. 



Along the central fold the beds dip north-north-westward at 

 Skopelo Island (12, p. 130) : in Lemnos they dip north-north- 

 westward towards the Xorth JEgean depression, and south-south- 

 eastward towards Mitylene ; in north-eastern Imbros they dip 

 eastward ; and along the coast of the Gallipoli Peninsula, from 

 Cape Suvla to opposite Gallipoli, they dip south-south-eastward. 

 A much later development of this fold (PL XXII, tig. 2) has given 



Fig. 2. — Vertical Oligocene strata at Combos, unconformably 

 overlain by horizontal Miocene terraces. (See p. 251.) 



rise to the ridge of Dohan Asian and Serian Tepe, and has dislocated 

 the Sarmatic Beds to the eastward as far as Ganos, by a fault with 

 a south-easterlv downthrow. 



There is not, as yet, sufficient information available to determine 

 the positions of the subsidiary foldings dependent on the changes of 

 direction of the main folds, but there are indications of one running 

 about north 30° west through the islands of Tenedos. Imbros, and 

 Samothrake, and of another in a nearly due northerly direction 

 through Ibridji, passing west of Keshan. 



Y. Tertiary Volcanic Pocks. 



The volcanic eruptions in this district were prolonged, apparently 

 without much interruption, from Cretaceous times into the Miocene 

 Period, but a more detailed study than has yet been made will be 

 required to determine the periods of action of the respective volcanic 



