RECONNAISSANCE IN COLORADO AND UTAH 669 
evidence, however, makes this conclusion more or less open to ques- 
tion, as will appear from the ensuing discussion. 
At about three fourths of a mile northwest of Grand River and 
on the southwest side of the valley traversed by the stage road from 
Moab to Thompson station on the Rio Grande Western Railroad, 
there is an excellent section of the strata for several hundred feet 
below the Vermilion Cliff sandstone. The beds dip gently to the 
southwest, and it is believed that no fault crosses the line of the 
section, although its base is immediately adjacent to the southwestern 
fault of a zone traversing Spanish Valley. The following section, 
including some of the Triassic beds, was measured by W. H. Emmons 
and L. H. Woolsey. 
SECTION NEAR GRAND RIVER, OPPOSITE MOAB, UTAH 
FEET 
Top 
32. Sandstone, massive or shaly, dark red at base and bright red at top 20 
31. Shaly, conglomeratic sandstone, reddish limestone pebbles, the size of 
a pea or smaller, with few bone fragments . . . . . 6 
Dolores Triassic 
30. Sandy shale, red and green oh ict aE et ros MO tine ney Me eae ON Ra 
29. Débris slope, of red shale fragments ee eis 20 
28. Limestone conglomerate, with a few inches of Te ctane at op fos 
wood, and bone fragments; ee less than 2 inches diameter 10 
27. Sandstone, gray, massive . PY Nae enon IN amit zi 10) 
26. Limestone conglomerate grading into veandlstone Seas : Rem Reopens 
25. Sandstone, gray, massive becoming shaly near top . . . . 23 
24. Calcareous sandstone and fine-grained conglomerate, mainly sandy, 
with conglomerate near base and top. Pebbles of limestone and 
sandstone with occasional bone fragments; pebbles vary from 
SIZeNOLspeas etOBSeVeETalGIN Ges) |) 5) 2 (cua! mea) many at ei Pee 
Permian (?) 
23. Red sandy shales, alternating with sandstone. Be ite 0038 
22. Conglomerate, containing pebbles of limestone and pendeione on ase, aT 
21. Sandstone and shale alternating, red and green, the shales sandy and 
Treva letgee ses sgh eR fat) co eh ele Repeats Sen ene a peg 
Hermosa Pennsylvanian 
20. Blue limestone, weathering a buff; near top a ae contains pipe 
coral Ean is : : SN eds eal 
19. Sandstone, thin Iedlitedl some erable some massive, al or gray 40 
18. Gnarly looking bluish limestone, sandy SP he ie teh Men ete 
L7moandstone pink to eray,smassive, friable @ ies @ se) 4 8) 28 
