646 



BROWN AND CONNELL THE JURASSIC OF CUBA 



sheer, white faces and often stand out as gigantic monuments. At 

 Finca Eosario, seven miles north of San Cristobal and to the west of the 

 stream of that name, the Kimmeridgian and Portlandian occur. 



SECTIONS NEAR SAN DIEGO DE LOS BANOS 



Thirty kilometers southwest of San Cristobal lies the town of San 

 Diego de los Banos, through which the river of that name flows. Along 

 the banks the Oxfordian shales are exposed with the Cretaceous beds 

 overlying them nonconformably (figure 3). Four kilometers west of 



Figure 3. — Section of icest Side of River San Diego de los* Banos 



The view is opposite the sulphur baths. Steeply dipping Oxfordian shales cut through 



by diorite intrusion. 



San Diego de los Banos, at the loma of La Giiira, is a thick exposure 

 of the Jurassic shales ranging from the Oxfordian through the Lusi- 

 tanian and possibly into the lower Kimmeridgian (figure 4). 



VIXALES SECTION 



Along the wagon road going north from the city of Pinar del Eio 

 there are exposed the Tertiaries, the Cretaceous, and finally the Jurassic, 

 which comes to view in the Yinales basin (figure 5). The best sections 

 for the Oxfordian are seen near the Bodega La Guasasa, between Vinales 



