1883.] 193 [Dale. 



quartz veins. Dip at a very high angle, strike about N".NE. At 

 13 this rock encloses several thin layers of fine black slate trav- 

 ersed by minute veins of quartz and satin-spar, and containing 

 coal plants. The only determinable specimen found was Annula- 

 ria longifolia, Brgt., which species Lesquereux states to be " very 

 common in coal measures especially in the lower strata above the 

 Millstone Grit." 1 This siliceous rock crops out at several points 

 southwards with the same strike but dipping W.W., and con- 

 stitutes the Point. Rounding the Point and following its 

 east side it is found to extend as far as the northern end of 

 Checker Beach with the same dip and strike, and is there con- 

 formably underlaid by a compact, greenish, slaty conglomerate, 

 containing some small quartz pebbles and rarely a pebble of red 

 jasper. Near Sene's Pt. there are many large quartzite pebbles 

 on the beach containing Lingulae. The quartzite has a little 

 mica and the Lingulae are in a fair state of preservation. These 

 pebbles, however, do not belong to the conglomerate of Sachuest 

 Neck, but evidently came from, the north. At the " Shelf " this 

 greenish conglomerate passes into an argillaceous and siliceous 

 serpentine with the same strike and dip and forms also the high 

 ground back of the shore. At 56 the conglomerate strikes N". 30 

 E. and dips W. NW. ; opposite the " Flints " the same. The 

 "Flints" are projecting points of a mass of black schist and sili- 

 ceous rock, like that on the west side of the neck, traversed in all 

 directions by small quartz veins ; dip and strike the same. The 

 sea erodes the schist leaving a net work of veins. At 57 the greenish 

 conglomerate recurs striking N". 30 E., and a little beyond, on the 

 line of the strike of the rocks at Checker Beach, the quartz and 

 clay aggregate appears and continues to Flint Pt., where a milky 

 quartz vein 30' in diameter intrudes. In the vicinity of this vein 

 the strata are evidently much disturbed, for the last outcrop near 

 Smith's Beach dips toward the eastern horizon. Leaving out the 

 disturbances at Flint Pt. and at the Flints these data warrant 

 section D. 



1 Leo Lesquereux. Description of the Coal Flora of the Carb. Formation in Penna. 

 and throughout the U. S. Vol. i, p. 45. Vol. P of the n Geol. Survey of Penna. Har- 

 risburg, 1880. 



PROCEEDINGS B. S. N. H. VOL. XXII. 13 OCTOBER, 1883. 



