PLEISTOCENE GEOLOGY OP MOOERS QUADRANGLE 33 



same level. I was not able to recognize any distinct beach at or 

 near this level farther south on this area. 



At the point of beginning near Altona the beach is distinctly 

 ribbed and contains many angular blocks along with water-worn 

 cobblestones. The deposit is raised some 3 or 4 feet above the 

 surface of the bare flat rock whose surface, following the local 

 dip, shelves steeply beneath the beach. 



At Bert Waitman's berry camp, a locality 1.1 miles distant in 

 a n.n.e. direction from Dead Sea, the bare rock extends a few rods 

 below and north of a line of subangular boulders, whose elevation 

 according to the aneroid measurement is 680 feet, a deposit which 

 taken by itself is not suggestive of a beach. Glacial striae were 

 observed here on the rocks (n. 31°e.). 



At a berry camp on the margin of the rock, reached by a road 

 going southwestward from Sciota, no trace of wave-strewn cobbles 

 or blocks was observed at 080 feet, and, as noted above, the bare 

 rock descends nearly to the 620 foot contour line. It is con- 

 ceivable that along this part of the line the wave action was such 

 as to remove rather than deposit longshore drift. 



South of the locality last mentioned, the partly wooded surface 

 of the stripped rock shows here and there a block or group of 

 blocks of sandstone in positions suggesting wave action. No trace 

 of a water level at or near the 680 foot line was detected on the 

 northern part of the morainal spur composed of very large sand- 

 stone blocks, which joins the southeastern point of Pine ridge. 

 Wave action appears however at a somewhat lower level, in the 

 most pronounced manner on the extension of this morainal ridge, 

 which forms a detached mass somewhat to the south and east, 

 named, as before noted, Cobblestone hill on the map which 

 accompanies this report [pi. 12-14]. 



Apparently this hill was originally a morainal wall laid down 

 along the ice margin at the southeastern extremity of the Altona 

 flat rock area. It is one of a series of elongated drift ridges which 

 extend en echelon from the southern end of Pine ridge along the 

 eastern base of Rand hill in Beekmantown approximately between 

 the 600 foot and 700 foot contour lines. Its form on the atlas 

 sheet is imperfectly shown. The northwestern part rises above 

 what is here termed the crest of wave-heaped cobbles. 



