TERTIARY FORMATIONS OF OLTENIA 695 



Mactra Fabreana d'Orb. Morenstermia infiata Andr. 



Mactra Jragilis Lask. Serpula gregalis, 



Mactra Neritina sp. etc. 



This horizon of the Sarmatian penetrates also into the Mehedenti 

 Plateau at Tismana, Sohoholu, Baia de Arama, etc. At Tarnita 

 (Baia de Arama) I found Cerith. mitrale, which demonstrates that the 

 upper beds of the conglomerates, considered by Sabba Stefanescu 

 to be Tortonian, must in part be classified as Sarmatian. 



3. The upper horizon (Kersonian Sim.) consists of sands, sand- 

 stone and argillaceous marls; it is not rich in fossils. At Buleta, in 

 calcareous conglomerates and conchiliferous limestone, I have found : 

 Mactra caspia Eichw., M. bulgarica Toula, Cerithium disjunctum 

 Sow. cf. Constantiae Sabba, Cardium sp., Hydrobriae, and Dosinia 

 exoleta L. 



It is interesting to note that in the conglomerates and conchilifer- 

 ous limestone at Titireciu there occur also Dosinia exoleta and 

 Modiola Volhynica Eichw., var. minor Andr., etc., etc., which would 

 indicate the first appearance of the Mceotic stage in this country. 



Toward the west I have found no evidence for the extension of 

 the Mceotic assise in that direction. Possibly the beds with Uelicida 

 between the strata with brackish and subbrackish fossils, and the 

 strata with V alenciennesia and Limnea, belong to the Mceotic stage; 

 in Mehedinti similar marls with Globigerinae and Orbulinae were 

 classified by S. Stefanescu and Fuchs as Sarmatian. 



In the middle and upper horizons of the Sarmatian (Aninis, Sacel, 

 Buzesti, Surpati, etc.) many plant remains 1 and bones of vertebrates 

 have been found. 



The mineral springs which appear in the Sarmatian at Pausesti, 

 Costesti, Ramnic, Polovraci, Novaci, Maghiresti, Balanesti, etc., 

 owe their salts and H 2 S to the pyrites and other minerals which occur 

 among the shingle of the Sarmatian conglomerates and sand, just 

 as is the case in the Eocene conglomerates. The emanations of 

 natural gas in the Dracoaia valley, Maghiresti, etc., are very probably 

 derived from the oil-bearing Eocene or Tortonian substratum. 



1 Some remains of plants collected by Gr. Stefanescu in this region were described 

 by A. Marion and L. Laurent (Annuaire du Musee de Geologie et Paleontologie, 

 1895)- 



