PARK CITY MINING DISTRICT, UTAH 439 
Character Thickness Formation 
Fossil bearing horizons 
Red shales—locally sandy—with interbedded 
coarse gray sandstones. 
Carries. in lower portion Aviculipecten W eber- 
ensis, A. curticardinalis, A. parvulus, Mya- 
L | feet Shale 
lina permiana. 
No economic importance. 
red” shale separates more calcareous up- 
per from more arenaceous lower portion. 
Carries large fauna, with many new fossil 
species. chiefly pelecypods including Penta- 
crinus sp.. Myalina permiana, M. avicu- 
loides, Aviculipecten curticardinalis, A. W eb- 
erensts, A. parvulus, A. occidaneus, Lingulas, 
Spirifers, Dentalia. 
Forms country frock for replacement ore bodies 
and lodes. 
1.500+  Ankareh 
i; 
190 Thaynes 
feet Limestone 
Permian 
Red shale—thinly bedded—tine grained. 
Bears ripple marks, mud cracks, raindrop 
imprints. 
No direct economic importance. 
1,180 Woodside 
feet Shale 
Carboniferous 
Calcareous with interbedded quartzite, sand- 
stones and some shale. 
Carries Lingulidiscina sp., Productus cora, 
Productus sp., Plagioglypta canua, Euphe- 
mus subpapillosus, Bellerophon, sp. 
Forms country rock, for principal, bonanza 
replacement ore bodies. 
Park City 
592 feet Limestone 
\ 
| 
\ 
Calcareous with sandstones and shales, ‘‘ Mid- | 
) 
i 
Pennsylvanian 
Gray quartzite, massively bedded, homogene- 
ous, dense. 
Carries, in Weber Canyon, Lingula sp., Pro- T 
_ ductus subhorridus, Schizodus sp., Plagio- : oa Me Ce 
glypla canua, Euphemus subpapillosus. 
Forms wall or walls of lead-silver lodes. 
Columnar section of portion of Carboniferous, Big Cottonwood Canyon, Wasatch Range, Utah 
