| OCR Text |
Show 51 Morrison formation; Upper unit; (Brushy Basin member) 1. Shale, variegated, with thin and discontinuous beds of hard sandstone and limestone; poorly exposed; forms slope ....310 2. Sandstone, light-gray, coarsegrained and conglomeratic, massive, friable 40 3. Shale and thin sandstone; forms covered slope 28 Lower unit; (Salt Wash member-}) 4. Sandstone, light-brown and light-gray, medium-* to coarsegrained, massive to lenticularly and irregularly bedded, cross-bedded; forms vertical cliff and bench; ore-bearing 60 5. Shale, red except upper few feet, which is gray, with thin sandstone lenses; forms poorly expo sed slope 45 6. Sandstone, light brown and light-gray, medium- to coarse-grained, massive to lenticularly and irregularly bedded, cross-bedded; forms vertical cliff 21 7. Sandstone, shaly, with shale lenses; sandstone is light-gray, coarse-grained, massive, soft and friable; shale is reddish and sandy 24 8. Sandstone, like No. 6 8 9. Shale, like No. 5 12 10. Sandstone, light-gray to buff, medium- to coarse-grained, thick-bedded, cross-bedded; forms vertical cliff J3°- 578 |
