SECOND REPORT OF THE DIRECTOR I905 



59 



Bulletins 



Geology 



5 No. 77 Geology of the Vicinity of Little Falls, Herkimer 

 county. By H. P. Cushing. 98p. 1 5pl. 2 maps. 



Contents: 

 Preface 



Geographic position 

 General geology 

 The rocks 



Pre-Cambrian rocks 



Paleozoic rocks 

 Structural geology 



Dip 



Folds 



Faults 



Foliation 



Joints 



Some oscillations of level during 



the early Paleozoic 

 Paleozoic overlap on the pre- 



Cambrian floor 

 Character and slope of the pre- 



Cambrian floor 



Unconformity at the base of the 

 Trenton 



Absence of the Chazy formation in 



the Mohawk valley 

 Sudden thickening of the Trenton 



westward 

 Comparison with the northern 



Adirondacks 

 Topography 



Pre-Cambrian surface 

 Present surface of the Paleo- 

 zoic rocks 

 Influence of the faults on the 



topography 

 Pleistocene (glacial) deposits ] 

 Economic geology 

 Petrography of the pre-Cambrian 

 rocks 



6 No. 83 Pleistocene Geology of the Mooers Quadrangle. By 

 J. B. Woodworth. 62p. 2 5pl. map. 



Contents: 

 Preface 

 Introduction 



Surface deposits of the area 

 Wisconsin epoch 



Glacial striation 



Table of glacial striae 



Interpretation of the striae 



Glacial erosion 



Glacial deposits 



Glacial drainage and spillways 



In graham esker 



Deltas contemporaneous with 



ice fronts 

 Spillways and the flat rocks 



Small rock exposures 

 Late and Post-Wisconsin lake and 

 marine deposits 



Shore lines of the area 



Marine invasion 

 Recent changes 



vStreams and stream deposits 



Wind-blown sands 



Swamps 



Summary of Pleistocene history 



of the area 

 Explanation of the map 

 Bibliography 



7 No. 84 Ancient Water Levels of the Champlain and Hudson 

 River Valleys. By J. B. Woodworth. 2o6p. upl. 18 

 maps. 



