FALLS The base of the Falls section is at road level, about 0.9 mile south of the Buttermilk Creek section and about 1 mile south of Falls, Pa., on the east side of the Susquehanna River. The section extends up the steepest accessible part of the south end of the cliff. Susquehanna Group: 23. Sandstone, brownish-gray; grades to greenish gray in 19. "Glomerate," greenish-gray, limy, ferruginous; weathers 3 18. Shale, medium-dark-gray; weathers to very light gray; 17. Shale, grayish-brown, silty-. 16. Shale, greenish-gray, silty, fissile to platy, lenticular; 15. Sandstone, greenish-gray, very fine grained, well-sorted; 14. Claystone, grayish-brown, silty; beds 14 in. thick‒‒‒‒‒‒ 12. Shale, grayish-brown, silty; lenticular unit 0-4 ft thick_- - 10. Shale, grayish-brown, silty, micaceous; beds as much as Susquehanna Group-Continued Catskill Formation-Continued 7. Claystone; grayish brown in upper and lower parts, 6. Sandstone, greenish-gray, very fine to fine-grained, mica- 5. Sandstone, mostly greenish-gray; brownish gray at base; 2. Sandstone, greenish-gray to light-olive-gray, fine-grained, 1. In descending order: Claystone, greenish-gray, silty, slightly limy, fissile to Part of zone C measured_. LOG OF RICHARDS 1 WELL The Richards 1 well was completed on November 10, 1956, by the Transcontinental Production Co. It is approximately 2,050 feet south of lat 41°25'0" N. and 8,850 feet west of long 75°47'30" W. in the Ransom 72-minute quadrangle, Lackawanna County, Pa. The top of the well is 1,030 feet above mean sea level; its depth is 8,618 feet. It was started about 2,500 feet below the top of the Catskill Formation and about 3,060 feet below the base of the Pottsville Formation. Cuttings from the well were borrowed from the Pennsylvania Bureau of Topographic and Geologic Survey, Pittsburgh. The well was drilled by cable tool. Samples were clean and were taken mostly at 3-5 foot intervals; they were examined by E. E. Glick of the U.S. Geological Survey. (See pl. 2 for a graphic section of the rocks penetrated by the Richards 1 well; pl. 1 for the location of the well; and fig. 8 for the stratigraphic relations of the penetrated rocks to those described in the stratigraphic sections.) Susquehanna Group: Catskill Formation (3,340 ft): Zone C (lower part): Sandstone, greenish-gray, very fine to fine-grained, Depth (feet) 0-34 Sandstone, medium-light-gray, fine-grained, slightly 34-40 40-45 45-50 Shale, medium-gray and light-brownish-gray, very 50-53 Sandstone, light-gray, very fine to fine-grained, slightly 53-60 60-70 Sandstone (as above), and 20 percent medium-gray 70-75 Sandstone, medium-gray, very fine grained, silty, clayey, 75-80 Shale, medium-light-gray, and 20 percent light-brown- 80-100 Siltstone, medium-gray, slightly micaceous, very finely 100-112 Sandstone, light-gray, fine-grained, slightly limy, mica- 112-130 Susquehanna Group-Continued Catskill Formation-Continued Zone C-Continued Sandstone (as above, but more limy); some subrounded Depth (feet) medium quartz grains; plant fossils, partly pyritized. Sandstone (as above), and 50 percent medium-gray shale and siltstone___ 130-140 140-155 Shale, medium-gray (trace light-brownish-gray) ; abun- 155-162 Sandstone, medium-gray, fine-grained, limy, micaceous, silty; thin medium-gray shale beds.‒‒‒‒ 162-172 Siltstone, medium-gray, very micaceous, finely sandy__ 172-179 Sandstone, medium-gray, fine-grained, silty, limy‒‒‒‒‒ 179-185 Siltstone, medium-gray, finely micaceous_. 185-190 Sandstone, medium-light-gray, very fine grained, mica ceous, limy.--. 190-195 Shale, medium-gray, very finely micaceous-_ 195-204 Sandstone, medium-light-gray, fine-grained, limy, silty, 204-209 silty 209-230 Sandstone, light-gray to light-brownish-gray, very 230-235 235-245 Claystone, light-brownish-gray to grayish-brown,' very 245-258 Sandstone, medium-light-gray, very fine to fine-grained, Sandstone, medium-light-gray, fine- to medium-grained, 258-270 270-290 290-305 Shale, medium-gray, very finely micaceous__ 305-307 Sandstone, medium-light-gray, fine- to medium-grained, limy to very limy; white vein-calcite crystals; dark 307-320 Siltstone, medium-gray, coarse-grained, hard, finely micaceous, slightly limy 320-340 Sandstone, medium-light-gray, fine- to medium-grained, micaceous, slightly limy to very limy, silty; abundant 340-350 Claystone, medium-gray, silty, finely micaceous, slightly 350-357 1 Color terms used are those of the "Rock-Color Chart" (Goddard and others, 1948). "red" beds typical of the Catskill Formation are grayish-brown to brownish-gray. The Susquehanna Group-Continued Catskill Formation-Continued Sandstone, medium-gray, very fine grained, silty, limy; Depth (feet) 357-380 Siltstone, medium-gray, coarse-grained, finely micace- 380-400 400-408 408-420 Sandstone, medium-light-gray, fine-grained, finely mi- Shale, greenish-gray Shale, grayish-brown, silty, slightly limy... grained, finely micaceous____ 420-462 462-465 465 472 472-495 Shale, grayish-brown, silty-. 495-504 Sandstone, medium-light-gray, very fine grained, 504-518 518-525 Sandstone, light-gray, very fine grained; interbedded 525-545 545-560 560-599 Siltstone, medium-gray, finely micaceous_. 599-601 Sandstone, medium-light-gray, fine-grained, micace- 601-622 622-627 Sandstone, light-gray, very fine to fine-grained, micaceous, silty, slightly limy; grain size increases Sandstone, light-gray, fine-grained, slightly limy, slightly micaceous_. 690-700 Sandstone, medium-light-gray, fine-grained, micaceous, slight limy, silty; silty zone at top 2 ft thick 700-725 Siltstone and shale, medium-gray, finely micaceous; 725-770 |