viii CONTENTS. 



Chapter VII. — The graphitic mica-schist series ou the west side of the valley — Continued. Page. 

 The Conway schists, or the corrugated mica-schists — Contiuued. 

 Subordinate beds in the Conway schist — Continued. 



The limestone beds 188 



The amphibolite beds 189 



The Conway bed 189 



The Whately bed 190 



The Whitmores Ferry bed 190 



Petrographical description of limestone and amphibolite; the limestones, the 



anvils, pa.ssage of limestone into amphibolite 191 



Analyses of the amphibolites 195 



Projection of the limestone and amphibolite of the Conway schist through the 



Leyden argillite in Whately 196 



Contact metamorphism of the limestone by granitite ; argentine 197 



Cleavage in the Conway schists 199 



Fossils (?) of the Conway schists 200 



The Leyden argillite 201 



Description 201 



Quartzite in the argillite 202 



Petrographical description 202 



Stratigraphy 203 



Boundary on the Conway schists 203 



Argillite ou the western border of the "graphitic mica-schist" (Goshen schist) 204 



Relative age of the Conway schist and the Leyden argillite 204 



Contact metamorphism of the Leyden argillite bordering the tonalite of Hatfield.. 205 



The sericite-gneiss 206 



The chiastolite-schist 209 



Chapter VIII. — The bands of Silurian schists on the east side of the valley 211 



The Northfieldsemisyncline 212 



General description 212 



The Gulf road sections 213 



Sections north and south of the old Warwick road 215 



Pegmatite dikes iiud minerals 216 



The Wendell branch syncliue 217 



The Leverett-Amherst area 218 



The amphibolite and mica-schist series along the east side of the Connecticut basin from 



Leverett southward 218 



North Leverett (Greenfield quadrangle, southeast comer) 219 



Leverett Center 220 



The Savoy schist, or whetstone-schist 220 



The Amherst feldspathic mica-schist (Conway schist) 222 



Leverett 222 



Amherst 222 



The Pelham-Shntesbury syncline 225 



The great central syncline 227 



Warwick and Orange 227 



Topography 230 



I 



