568 J. CLIFTON WARD ON THE GRANITIC, GRANITOID, AND 



43. On the Granitic, Granitoid, and Associated Metam.orphic Bocks 

 of the Lake -district. Parts I. & II. By J. Clifton Ward, 

 Esq., Assoc. R.S.M., E.G.S., of the Geological Survey of 

 England and Wales. (Eead June 23, 1875.) 



[Plates XXX. & XXXI.] 



Preface. 



In the following memoir I propose to consider all the points of 

 theoretic importance connected with the granitic and granitoid rocks 

 of the Lake-District and their associated metamorphic rocks, details 

 and self-evident facts being described at full in the 'Survey Memoir.' 



Part I. will treat of the probable pressures under which the 

 granitic and granitoid rocks were consolidated, these pressures being- 

 calculated from the evidence afforded by the liquid- cavities contained 

 in the quartz. 



Part II. will deal with, the case of the Eskdale and Shap granites 

 and the associated altered rocks, on lithological, microscopical, and 

 chemical grounds, the evidence for or against these masses being 

 derived by metamorphism from the surrounding rocks being brought 

 forward. 



In Part III. the Skiddaw granite and metamorphosed Skiddaw 

 slates will be treated in a similar manner. 



Part IV. will comprehend a like examination of various masses of 

 syenitic granite, syenite, and quartz -felsite, with the rocks metamor- 

 phosed around them. 



Lastly, Part Y. will consist of a summary of results, and a state- 

 ment of the theoretic points which these support. 



Part I, — On the Liquid- cavities in the Quartz-hearing Rocks of the 

 Lake-district. 



. . [Plate XXX.] 



Contents. 

 Introduction. 



I. Geological Relations of the three Granitic Centres. 



1. General Relations. 



2. Skiddaw Granite. 



3. Eskdale Granite. 



4. Shap Granite. 



5. Summary. 



II. Mode of Microscopic Examination, and Precautions taken. 



III. General Residts of Microscopic Examination. 

 Preliminary Remarks. 



1. Skiddaw. Granite. 



2. Eskdale Granite. 



a. Wastdale-head Granitic Veins. 



b. Quartz Felsite Dykes from the Eskdale Granite. - 



