REPORT OF THE DIRECTOR IQIO IQ 



dantly borne out in the field. In the southeastern parts of the 

 quadrangle the movement was south. In the northwestern section 

 the direction was nearly west, and in the central and southeastern 

 parts around the village of Berne and toward the hamlet of Con- 

 nersville, the direction of striae is intermediate. There is a sharp 

 alignment of drumloidal forms in the east and north wdiich does not 

 prevail in the intermediate or southwest direction. ])ointing to the 

 more prolonged and heav)^ scorings of the Mohawk and Hudson 

 lobes. 



About one and one-half miles west of Altamont the exposed slopes 

 which were subject either to Hudson or ^Mohawk movements, show 

 interesting striae ranging from s. 10° e. to west. On one surface 

 are striae s. 5° e. crossed by another set having directions s. 30° to 

 35° w. Another surface has two sets, one s. 5" to 10° w. the 

 other west. These records point to an alternating or conflicting 

 control !))• the two movements at the very i)oint of differentiation, 

 as deleriiiined by the strong northward end of the Ilelderberg 

 front. 



To the westward detailed study is needed. There is. however, a 

 significant development of moraines which may in a general way 

 mark the southwest border of the lobe, and may probably be con- 

 temporaneous with the Gloversville moraine. These moraines occur 

 near the headwaters of Cobleskill creek near West RichmondN'ille ; 

 along Schenevus creek from its head to its junction with the Sus- 

 (|uehanna ; along the lower sections of Elk creek valley and Cherry 

 \"alley, and along the Suscjuehanna from Cooperstown to Portland- 

 ville. It is significant that a day's drive among the strong hills 

 between Cooperstowai and Westford led to the finding of but one 

 locality of striae, showing a remarkably continuous sheeting of thick 

 ground moraine for such topography. As noted by Chamberlain in 

 his early work in central New York, the westward limit of ?\Iohawk 

 movements seems to have been in southern Herkimer county not 

 far from West Winfield and Cedarville. The drumlins and drum- 

 linoids wdth east by west axes are conspicuous between Richfield 

 Springs and Herkimer. 



TXDUSTRTAT. GEOLOGY 



Report on gypsum. As menticmed in my last report, an in\es- 



tigation of the gyi)sum de])osits of the State was undertaken in 1909 



with the view of a coiu])rehensive descri])ti()n of these resources 



which are widel)- distributed and of gro'A'in'g economic importance. 



