( 364 ) 



A SKETCH OF THE TERTIARY FORMATION IN THE PROVINCE 



OF GRANADA. By C. SiLVERTOP, Retired Brigadier in the 

 Service of H. C. M., K. of the R, and D. O. of Charles III., 

 and F, G. S. With Plates, Communicated by the Author,* 



The tertiary deposits discontinuously spread over the province 

 of Granada, are naturally and geographically divided into two 

 portions, — the littoral, and the inland, — by the intervening moun- 

 tainous district of primary and secondary rocks, which I have 

 termed the Sierra Nevada Chain. 



At the southern base of this chain, along the line of the Me- 

 diterranean coast from Malaga to Cartagena, wherever the older 

 rocks that compose it do not descend to the shore, as well as in 

 some transversal valleys that terminate in this inland sea, nume- 

 rous patches and little tracts belonging to the tertiary formation 

 may be seen. These constitute the littoral position of the de- 

 posit 



The inland position will embrace the different tracts to the 

 north of the same Sierra Nevada chain, or in the interior of the 

 province of Granada, where beds of similar origin have been ob- 

 served, and will be subsequently noticed in the same order. 



Littoral Portion of the Tertiary Deposit in the Province of Granada^ 

 or Line of Coast frcmi Malaga to Cartagena, 



Various beds full of tertiary organic remains are observed in 

 the immediate vicinity, and in the neighbourhood of Malaga ; 

 1^^, contiguous to the higher part of the town ; ^dly.^ between 

 three and four miles up a mountain stream, called the Guada- 

 medina, which separates Malaga from its suburb, and then 

 enters the Mediterranean ; and, Sdly, up a transversal valley or 

 estuary, which I shall call the Valley of Malaga, that terminates 

 in the Mediterranean between this city and the village of 

 Churiana, about eight miles distant towards the south west. 

 For the sake of perspicuity, I shdldividjs. these beds jtnto. two 



• This memoir was read before the Geological Society of London, but 

 withdrawn, by permission of the President and Council^ ff]^,jp^bJU(£»tion in this 

 Journal ,a,;T9li!>i.;.. 



