GEOLOGY OF BLACK SEA, MARMOEA, AND GULF OF COTHNTH. 11 



of finely oolitic light-grey limestones of Loitsch, with remains of 

 large Cruioids, together with the apparently non-fossihferous strata 

 lying on them, are regarded as Jurassic by Dr. Stache. At a short 

 distance southward (from Loitsch to near Rekek), limestones, partly 

 dolomitized, and containing Budistce and Caprotince, represent the 

 Lower Cretaceous (Upper Keocomian) deposits; while the Upper 

 Cretaceous (Turonian) are represented, from Adelsberg to Yale- 

 nesina, by light yellow limestones, with beds of Eadiolites, alter- 

 nating locally with black bituminous slates (parallel to the fish- 

 slates of Comen) and with Rudista-limestones. Nummulitic, resting 

 on Cretaceous limestones (at high angles, and sometimes over- 

 hangingj, overlaid by Eocene sandstones (Tassello), extend along 

 the sea-coast from Nabresina to Trieste. All these complex Eocene 

 beds show evidences of violent and manifold disturbance. 



. [Count M.] 



On the Geology of the Coasts of the Black Sea, Sea of Maemoea, aTid 

 the Gulf of Coebstth. By M. Ecetteele. 



[Proceed. Imp. Greoh Instit. Vienna, June 1858.] 



An exploration of these coasts was made in the spring of 1858, 

 in company with the lately deceased Mr. Perth. The blackish argil- 

 laceous slates, limestones, and quartzite-slates, reaching along both 

 sides of the Bosphorus, extend north-eastward as far as Gehiseh ; 

 they contain Trilobites, Orthoceratites, Brachiopods, &c. They are 

 succeeded by a powerful deposit of red sandstone, beginning at 

 Gehiseh, in the Gulf of Zamid, forming the largest portion of the 

 Aghatseh-Denisi and the Taila Mountains between Ismid (Mco- 

 media), Chandek, Uskab, and the Black Sea, and repeatedly touch- 

 ing the shore between Eregli and Samsun. According to MM. 

 Tchihatcheff and Kotschy, this sandstone range continues eastward 

 into the iaterior of Asia Minor. The lowermost strata of this sand- 

 stone are quartzose conglomerates, alternating with felspathic sand- 

 stones, deeply tinged with oxide of iron, abounding with Calamites 

 and layers of shale, with very good coal-beds of 5 to 12 feet 

 thickness, and they make their appearance between Eregli and 

 Amassera. These shales contain remains of Calamites transitionis, 

 Pecopteris Geinitzi, Odontopteris ohtusiloba, — forms more charac- 

 teristic of the Devonian than of the true Carboniferous deposits. 



This sandstone is limited on the south by an extensive tract of 

 melaphyre, traceable from Bos Burun on the Sea of Marmora (be- 

 tween the Gulfs of Ismid and Gaulik), through the Samanlii and 

 Usun-Tschair Mountains, over Chandek, as far as the plain of the 

 Uskiib, where it ends at the crystalline slates and limestones on the 

 southern slope of the Samanlii, the Usun-Tschair Dagh, the Goh 

 Dagh, and the KurmanHi Dagh, connected further southwards with 

 Mount Olympus of Brussa. The red sandstone of the coast-moun- 

 tains is frequently overlaid, between Ismid and Aktsche Schehr, by 

 grey Cretaceous marls with Inocerami, passing locally into the state 

 of compact limestone full of nodules of corneous silex. 



