composition 41 “Moab panel” 10 Moab-Spanish Valley anticline 26 Moab Valley 57 Moab Valley-Seven Mile anticline 100, 101 Moenkopi Formation 32, 102, 103 Monoliths 63 Monument, beginning _1_ Monument Valley 101, 102 Morrison Formation 32, 101 Morton, Rogers C. B., Secretary of the Interior 8 Moss, Frank E., Senator 8 Moss Back Member, Chinle Formation 15 N National Park Service 8, 12, 40, 75, 90 Natural Bridges National Monument 3, 37, 40, 102 Navajo Arch 90 Navajo Sandstone 24, 35, 52, 103 canyon floor 63 crossbedding 63, 66, 70 park road cutting 57 water supply 57, 87 Navajo Tribe 102 Needles section, The, Canyonlands National Park 16, 102 Newell, (Mrs.) Maxine 12, 105 Nixon, Richard M., Congressional Bill 5 North Window 40, 68, 71 O Oil exploration 15 Cane Creek anticline 24 deep tests 99 Origin of the arches _37_