Reports and Proceedings — Geological Society of London. 325 



2. "On the Stratigraphy and Structure of the Tarnthal Mass 

 (Tyrol)." By Alfred Prentice Young, Ph.D., F.G-S. With a " Kote 

 on two Cephalopods collected on the Tarnthal Kopfe (Tyrol)." By 

 George C. Crick, Assoc. R.S.M., F.G.S. 



The immediate occasion for this paper is the discovery of fossils 

 "which appear to throw new light on the relations of the rocks of this 

 mountain. The rock series may be divided into three parts. 

 {a) The lowest portion consists of dolomite, and the Lias is in normal 

 position, the upper heds being the youngest ; this portion is scarcely 

 disturbed. (J) A middle section, consisting of calcareous schists, 

 with a band of massive dolomite and dolomite breccia, shows marks 

 of violent disturbance and crushing. (c) The uppermost part, a 

 mass of more or less altered quartzite schists, calcareous schists, and 

 serpentine, retains most of its original character and form, having 

 undergone little mechanical distortion since it left its ' root.' The 

 succession is summarized as follows : — 



I Serpentine. 

 3. I Opliicalcite. 



( Tamtlial quartzites, etc. 



( Calcareous schists with green bands. 

 2. \ Dolomite breccias. 

 ( Calcareous schists. 



, ( Liassic limestone. 



\ ' Principal dolomite ' (Rhsetic). 



The explanation of the structure now suggested is as follows : — 

 The line between 1 and 2 marks approximately the lower loop of 

 a big fold, the dolomite breccia being a repetition in an attenuated 

 form of the ' principal dolomite ' below. The interpretation of the 

 relations of 2 and 3 is not so clear. Either the whole series 2 and 

 3 is in inverted sequence, or else the dolomite breccia represents the 

 whole of the ' principal dolomite ' in a flattened fold {na-ppe of 

 Termier), the serpentine and quartzite having been brought into 

 their present position by a long overthrust, representing the traineau 

 ecrmexvr of the French geologists. The question whether the 

 lower dolomite and the Lias are iyi situ or not is left undecided. A 

 petrographical note is furnished on the amphibolite of Gufidann. 



11.— May 20th, 1908.— Professor W. J. Sollas, LL.D., Sc.D., F.R.S., 

 President, in the Chair. 



The President announced that the Daniel Pidgeon Fund for 1908 

 had been awarded to Mr. James Archibald Douglas, B.A., F.G.S., 

 who proposes to investigate the zonal succession of the Lower 

 Carboniferous rocks of "Western Ireland. 



The President read out the result of the poll taken to ascertain the 

 opinion of the Fellows resident in the United Kingdom as to the 

 admission of women to the Society, as follows : — 



Papers sent out ... ... ... 870 



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