National Geographic : 1894 Mar 17
N. H. Darton-ShawangunkMountain. anticlinal which rises at Rosendale. The structure of lake Mo honk is shown in figure 1. The lake basin is in Hudson shales, but it is bordered on the east and west by high cliffs of Shawangunk grit. To the south there is a gap in the front of the mountain through which the shales extend to the lake. The top of these shales is a few feet above the surface of the lake at its southeastern end, but the pitch carries them a few feet below the water surface toward the north and west. On plate 2 are shown some features of lake Mohonk. This view is looking to the southward and out of the gap in the eastern front of the mountain through which the Hudson shales extend to the lake. On the left is Paltz point, and to the right, in the distance, is Cope point, a projection of the southern extension of the eastern front of the mountain. East of the lake there is a thick mass of grit, which lies along the crest of the anticlinal. It begins a short distance north ward and is terminated by very abrupt cliffs in Paltz point, near the southern end of the lake. The character and relations of this " point" are represented in the stereogram. At the head of the lake and the base of the southern end of the mass of grit in Paltz point the Hudson shales constitute a small plateau which surmounts the long eastern slope of the mountain. There is no cross-drainage way at the base of the cliffs and the reason for the abrupt termination of this point is obscure. The grit dips gently west-northwestward along the western side of Paltz point and very slightly eastward in its easternmost part. Northeast of the lake the dip is at a low angle to the west ward, but there are several slight undulations. There is every where a pronounced pitch northwestward. Owing to the west erly dip the grits in the Paltz point ridge are somewhat lower just north of the lake than elsewhere. It will be seen from these statements that the lake lies slightly west of the center of the arch of the anticlinal, and all the dips along its shores are north westward, although at very low angles. The degree of dip rapidly increases down the western slope of the mountain into the syn clinal valley of Coxingkill. The outlet of lake Mohonk is to the northward by a branch of Coxingkill. This branch flows through a slight depression separating the Paltz point range from the main mountain mass, and then obliquely down the flank of the anticlinal.
1894 Apr 25
1894 Feb 14