:!7:i 



J. S. DILLER GEOLOGY OF THE TAYLORVILLE REGION. 



groups are represented — the Cenozoic, Mesozoic and Paleozoic, — and of 

 these there are members in the Pleistocene, Neocene, Jura-Trias, Car- 

 boniferous and Silurian systems, belonging in a number of eases to well 

 defined series. 



Gf sedimentary formations there are within the region at least eighteen, 

 embracing alluvium, glacial deposits, auriferous gravels, volcanic tuff, 

 limestone, conglomerate, sandstone, quartzite and slates ; six of these 

 are probably Paleozoic, nine are Mesozoic, and three Cenozoic. 



Geologic Column of the Taylorville Region. 



Group. 



i izoie 



Mesozoic ... 



a 

 It 

 (( 



Paleozoic .... 



(?) 



System. 



Pleistocene. 



Neocene 



.1 ur.'i (upper) 



" (middle)... 



(lower).... 

 Tria 3 ( upper) .... 



" (?) 



(upper).... 



< larboniferous . 



Silurian (?).. 

 (*?')" 



(?) 

 (?) 



Series 



Miocene.... 

 i lorallian ... 

 < lallovian.. 

 Ini. ( lolite. 



Upper Lias (?)., 

 Rhsetic (?) 



Lower Karnic. 

 1 rpper Noric... 



Niagara. 



Sedimentary formations. 



Valley alluvium. 

 Glacial moraines. 



Johnson grave] (auriferous) 



Hinchman tutf 



Bicknell sandstone 



Mormon sandstone 



Thompson limestone.. 



Hard grave sandstone 



Foreman beds 



Trail beds 



Hosselkus limestone 



I sl:lt " s [Monotisbed J 



Robinson beds 



Shoo Fly beds 



Arlington beds 



Taylorville slates 



Montgomery limestone 



Grizzly quartzite 



0) w 



a a) 

 M 8 



500 



500 



.'i. ii i 



10-30 



450 



1,600 



2,900 



Ho 



200 



1,150 



8,600 

 5,700 

 1,800 

 10-60 



4ui I 



24,530 



The valley alluvium lias been deposited by Indian creek and its trib- 

 utaries and tills Indian and Genesee valleys. 



Glacial moraines are found on the slopes of Grizzly mountain, espe- 

 cially beneath Tower rock, where they reach nearly to Little Grizzly 

 creek. A short distance northeast of Kettle cock a moraine forms the 

 embankment containing Taylor lake. 



The Johnson gravels are auriferous and have been mined at the Tay- 

 lor and Pealc diggings and at the head of Mountain meadows, where 

 they have an altitude ranging from 5,000 to 5,600 feet, and contain the 

 remains of Miocene plants.* Mr. Turnery has traced these gravels south 

 of the fortieth parallel, through the Cascade mine to the vicinity of 

 Haskell peak, where they have an elevation of 7,000 feet. The south- 

 erly inclination of the pebbles, the northerly slope of the deposits, and 



Eighth Annual Reporl of the 1 lire. 'tin- of the (". S. Geological Survey, part i. L889, pp. 401-432. 

 t Bull. Phil. Sue. ul' Washington D. C vol. xi, L892, \>. 406. 



