PROCEEDINGS 



OF 



THE GEOLOGICAL SOCIETY OF LONDON. 



1829-1830. No. 16. 



March 5. — Richard Smith, Esq. of Connaught Square ; Sir Thomas 

 Maryon Wilson, Bart, of Charlton House, Kent ; Aristides Franklin 

 Mornay, Esq. of Ashburton House, Putney ; Rev. Counop Thirl- 

 wall, M.A. of Trinity College Cambridge; Rev. John Philip Hig- 

 man, M.A. of Trinity College Cambridge, and William Parry 

 Richards, Esq. of Queen Street, Bloomsbury, — were elected Fellows 

 of this Society. 



A paper was read, entitled "On the Tertiary deposits of Lower 

 Styria;" by the Rev. Adam Sedgwick, Pres. G.S. F.R.S. &c. and 

 Roderick Impey Murchison, Esq. Sec. G.S. F.R.S. &c. 



The region described in this memoir is a great depression on the 

 north-eastern watershed of the Alps, in which has been accumu- 

 lated a very fine series of tertiary deposits, terminating eastward in 

 the plains of Hungary. This great trough or bay of Lower Styria, 

 which is intersected by the river Mur, is bounded on the west by the 

 Schwanberg Alp ; on the north by the calcareous chain of Griitz and 

 the primary mountains of Pettau, Vorau, and Hartberg ; on the south 

 and south-west by the Matzeland Bacher-Gebirge. 



Two principal sections are offered, explanatory of the views of the 

 authors. — The first from the Schwanberg Alp to Radkersburg, in a 

 direction nearly east and west, develops in an ascending succession 

 all the tertiary deposits : — The second, from south to north, is con- 

 fined to the youngest zone of those deposits, and exhibits its relations 

 to the volcanic rocks of Hungary. 



I. Section in an ascending order of the tertiary formations between 

 Eibeswald on the west and Radkersburg on the east. 



a. The lowest members of these deposits consist near Eibeswald, of 

 micaceous sandstones, grits, and conglomerates, made up of the de- 

 tritus of the primary slaty rocks on which they rest at high angles of 

 inclination, and rise into the lofty mountain of the Radlberg. 



b. Shale and sandstone with coal. There are various beds of lignite 

 near Eibeswald, one of which is deposited on the grits of the Radl- 

 berg. At Scheineck, where the coal is extensively worked for use, it 

 contains bones of anthracotheria, and in the shale are found gyro- 

 gonites (Chara tuberculata of the Isle of Wight), many flattened 

 stems of arundinaceous plants, Cypris, shells of Paludinse, scales of 

 fish, &c. From the organic remains and position of the strata it is 

 presumed by the authors that this coal is of about the same age as 

 that of Cadibuona in Piedmont. 



