130 PROCEEDINGS OF THE GEOLOGICAL SOCIETY. [June 17, 



the length of this paper, these subjects may well form a future com- 

 munication. 



I would now, therefore, conclude with the hope that the present 

 paper may not be without interest, at the same time that I would 

 earnestly beg the kind indulgence of the Geological Society ; since 

 the many calls upon my time have prevented my rendering the sub- 

 ject so complete as I could wish. 



3. On the Geology of the Southern Part of Andalusia, 

 between Gibraltar and Almeria. By Professor D. T. Ansted, 

 M.A., F.R.S., F.G.S. 



[The Publication of this paper is unavoidably deferred.] 

 [Abstract.] 



The object of the author in this memoir was to direct attention to 

 several points of interest and importance in the Geology of the south 

 of Spain. These had reference to deposits of various ages, including 

 the metamorphic rocks, both of the Sierra Nevada and the coast. 



1 . The mica-schists of the Sierra Nevada form a well-marked series, 

 limited in position to the higher elevations. They are garnetiferous, 

 and traversed by veins of serpentine. Bands of quartz alternate with 

 the schists. On the south-west side deposits of highly argentiferous 

 copper-ore have been recently worked, but they appear to be irregu- 

 lar. Specimens of greenstone were discovered by the author on the 

 north side of the Sierra, but not in situ, and no such rock has been 

 described. On the north side the mica-schist is covered towards the 

 west by limestone, highly crystalline, and recently found to contain 

 deposits of galena. Over these are thick beds of marl and calcareous 

 beds of tertiary date, and irregularly over all is detritus of a com- 

 paratively recent period. On the south side is a deep ravine, thick 

 beds of shale occupying the space between the schists and the lime- 

 stones of the Sierra de Gador, long celebrated for numerous and rich 

 lead-mines. Beyond the limestone to the south are metamorphic 

 schists (not micaceous), and in some places the contact of the lime- 

 stones and these schists is marked by a gradual transition. These 

 schists are continued, with little break, parallel to the coast, and 

 at no great distance from it, for at least a hundred miles ; and at 

 intervals they contain deposits of copper-ore not argentiferous. Near 

 Malaga the author has observed a gradual passage from these schists 

 into a conglomerate, and thence into the triassic and Jurassic deposits 

 subsequently described. The schists are argillaceous and chloritic, 

 and as well as the mica-schists are traversed by serpentine- veins. No 

 organic remains have been discovered in any of the schistose beds. 



2. Over the schists on the coast, a little to the east of Malaga, at 

 a point where there is a dislocation, a foetid magnesian limestone is 

 presented to view, and is regarded by the author as Permian. This 

 limestone is black, semi-crystalline, unfossiliferous, entirely distinct 

 from the dolomites of the Sierra de Mijas adjacent, and is immediately 

 overlaid by a group of shales and sandstones, at the top of which is 



