182 A Bibliography of the Geology, etc., of California. 



Folio No. 5, Sacramento. 



The name of "lone formation" was used by Lindgren for a bed 

 of clay and sand with layers of lignite that occurs along the foot- 

 hills of the Sierra Nevada, especially in the gold belt region. 



Folio No. 11, Jackson. Topographic sheet, scale 1 : 125,000 ; 

 historical geology sheet; economic geology sheet; struc- 

 tural geology sheet. 



This folio includes the territory between the meridians 120 deg. 

 30 min. and 121 deg. west longitude and the parallels 38 deg. and 



38 deg. 30 min. north latitude. Portions of Tuolumne County. 



Folio No. 15, Lassen Peak. Topographic sheet, scale 

 1 : 125,000 ; areal geology sheet ; economic geology sheet ; 

 views of volcanic activity. 



This folio includes territory bounded by the 121st and 122d 

 meridians and the 40th and 41st parallels. Length, 68.99 miles ; 

 mean width, 52.68 miles ; area, 3,634.40 square miles. Portions of 

 Shasta, Tehama, Butte, Plumas, and Lassen counties. 



The name of "Grizzly formation" was given by Mr. Diller to the 

 Silurian beds at Grizzly mountains of Plumas County ; and that of 

 "Cedar formation" to a belt of slates and limestones on the north 

 fork of Feather River. 



Folio No. 17, Marysville. Topographic sheet, scale 1 : 3 25,000 ; 

 areal geology sheet ; economic geology sheet. 



This folio includes the territory between the meridians 121 deg. 

 30 min. and 122 deg. and the parallels 39 deg. and 39 deg. 30 min. 

 Area, 34.5 miles long and 27 miles wide. Portions of Butte, Yuba, 

 Sutter, and Colusa counties. 



Folio No. 18, Smartsville. Topographic sheet, scale 1 : 125,000 ; 

 geological sheet; economic geology sheet. 



This folio contains the territory between the meridians 121 deg. 

 and 121 deg. 30 min. west longitude and the parallels 39 deg. and 



39 deg. 30 min. north latitude. Area, 34.5 miles long and 27 miles 

 wide. Portions of Butte, Yuba, Sierra, Nevada, and Placer coun- 

 ties. 



Folio No. 29, Nevada City (special). 3 topographical maps, 

 scale 1 : 125,000 ; 3 economic maps ; structural sections. 



The three maps contained in this folio illustrate in detailed man- 

 ner the topography and geology of the gold mining district of Grass 

 Valley and Nevada City. 



