. Bulletin of the Geological Society of America. Geology. 882 M. L. FULLER—GEOLOGY OF FISHERS ISLAND In fact, the Herod gravel must usually be identified by its stratigraphic position between the Montauk drift and Jacob sands. Details of occurrence.—The Herod gravels are best exposed ii: the clay pit, where the sandy phase is strongly developed in the big anti- cline bringing up the Gardiner clay and Jacob sands. The relations and structure at this point are well shown in figure 6. Figure 11 shows ad- ditional details of the structure, although, owing to the talus present, the relations are no
. Bulletin of the Geological Society of America. Geology. 882 M. L. FULLER—GEOLOGY OF FISHERS ISLAND In fact, the Herod gravel must usually be identified by its stratigraphic position between the Montauk drift and Jacob sands. Details of occurrence.—The Herod gravels are best exposed ii: the clay pit, where the sandy phase is strongly developed in the big anti- cline bringing up the Gardiner clay and Jacob sands. The relations and structure at this point are well shown in figure 6. Figure 11 shows ad- ditional details of the structure, although, owing to the talus present, the relations are not entirely revealed. At Isabella beach the Herod gravels are seen resting on the Jacob sands and with them are arched up in broad open folds (figure 7). The conditions at the West Harbor locality (figure 10), except that the mate- rials are there moderately coarse gravels with pebbles the size of an egg, are similar to those at Isabella beach. The greater part of the high hill on the south shore south of West harbor appears to be composed of Herod gravels, which seem to be cross-bedded on an extensive scale, and which are, judging from the outcrop of the Jacob sands on which they rest, folded into broad arches of a few feet in 53s Figure 11.— East-west Section in Clay Pit. Showing details of folding in the sandy phase of the Herod gravels; clay at base. Except at the localities described, where the gravels are seen resting on the Jacob sands, the Herod beds can not be recognized with absolute certainty, although there is every reason to believe that the yellow and buff sands and gravels, which are seen at a great number of points be- neath the thin coating of Wisconsin till, belong to this formation, form- ing, in fact, by far the greater part of the island. They probably reach their greatest development either in the high hills south of West harbor, already mentioned, or in the similar hill southeast of Chocomount cove, which rises to over 120 feet above sealeve
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