| Formation / Members |
Thick- ness |
Rock Type | | |
QUAT |
Alluvium & eolluvium |
0-100 |
||
PLIOCENE |
Dissected fan deposits in Big Wash |
0-500 |
||
MIOCENE |
Steamboat Mountain Fm |
Rhyolite mbr |
0-150 |
|
Basalt mbr |
0-150 |
|||
Felsite & aplite dikes |
intrusive |
|||
Granite near Shauntie |
pluton |
|||
Monzonite |
pluton |
|||
Quartz monzonite |
pluton |
|||
Blawn Fm |
Rhyolite member |
0-200 |
||
Mafic lava flow mbr |
0-600 |
|||
Tuff member |
0-2000 |
|||
OLIG |
Isom Formation |
20-150 |
||
Three Creeks Tuff Mbr, BCV |
0-50 |
|||
Needles Range Group |
Lund Tuff |
250 |
||
Wah Wah Springs Fm |
100-700 |
|||
Cottonwood Wash T |
0-30 |
|||
Escalante Desert F |
0-200 |
|||
Horn Silver Andesite |
0-100 |
|||
Andesite of Shaunite Hills |
0-1500 |
|||
Conglomerate of High Rock Pass |
50 |
|||
JURASSIC |
Navajo Sandstone |
600-1000 |
||
TRIASSIC |
Chinle Fm |
Upper member |
400-530 |
|
Shinarump Cg M |
50-200 |
|||
Moenkopi Fm |
Upper red member |
700-1300 |
||
Virgin Ls Member |
100-250 |
|||
Lower red member |
300-340 |
|||
Timpoweap Member |
600-720 |
|||
PERMIAN |
Plympton Formation |
100-390 |
||
Kaibab Limestone |
350-600 |
|||
Toroweap Formation |
380-440 |
|||
Talisman Quartzite |
680-730 |
|||
Pakoon Dolomite |
270-400 |
|||
PENN |
Callville Limestone |
200-500 |
||
MISS |
Manning Canyon Shale |
60 + |
||
Great Blue limestone |
100-1000 |
|||
Humbug Formation |
350-430 |
|||
Deseret Ls |
Uncle Joe Mbr |
120 |
||
Tetro Member |
500 |
|||
Gardison Limestone |
100 |
|||
DEV |
Fitchville Formation |
30 |
||
Pinyon Peak Ln |
Upper member |
180 |
||
Lower member |
250 |
|||
Guilmette Formation |
450 |
|||
Simonson Dolomite |
500 |
|||
Sevy Dolomite |
340 |
|||
|
Data Sources:
*Still Gathering/Under Construction* USGS Special Publications by Various Authors Roadside Geology of Utah by Halka Chronic Field Guide: Northern Colorado Plateau by Keith Rigby Geologic History of Utah by Lehi Hintze- Purchase Information |
