LISTS GEOLOGIC FORMATIONS. 
311 
Tomstown limestone, Cambrian, Pennsyl- 
vania : Stose, 2:; 1 8. 
Topatopa formation, Eocene, California : 
Arnold, 63 ; Eldridge and Arnold, 770. 
Topeka limestone, Carboniferous, Kansas: 
Wooster, 2636. 
Tordrillo series, Jurassic, Alaska : Brooks, 
313. 
Tornillo clays, Cretaceous, Texas : Udden, 
2400. 
Toronto formation, Quaternary, Canada : 
Coleman, 547. 
Torrejon sandstones, Eocene, New Mexico : 
Keyes, 1388, 1390. 
'Pot sen scries. Alaska : Brooks, 313. 
Towns! own limestone, Cambrian, Pennsyl- 
vania : Stose, 2318. 
Trangville beds. Tertiary, Yukon Terri- 
tory : Brooks, 313. 
Traverse group, Devonian, Michigan : 
Cooper, 575 ; Lane, 1516. 
Trenton-Galena formation, Ordovician, Illi- 
nois : Weller, 2517, 2524. 
Trenton limestone. Ordovician, Iowa : 
Leonard, 1559, 
Trenton limestone, Ordovician, Missouri 
and Illinois : Bowman and Reeds, 277. 
Trenton limestone, Ordovician, Ontario : 
Ells, 788. 
Trenton limestone, Ordovician, Vermont : 
Edson, 774. 
Trenton shales, Ordovician, Virginia : Bass- 
ler, 158. 
Trinity sand, Cretaceous, Arkansas : Veatch, 
2436. 
Trout Creek sandstone member. Cretaceous. 
Colorado : Fenneman and Gale, 8-63. 
Troutdale granite, Colorado: Underhill, 
2414. 
Trout Lake conglomerate, pre-Cambrian, 
Ontario : Coleman, 530, 54(5. 
Trujillo formation, Triassic, Texas : Gould, 
087. 
Tule formation, Tertiary, Texas : Gould, 
986. 
Tullahoma formation, Mississippian, Mis- 
sissippi : Crider, 595. 
Tully limestone, Devonian, New York: 
Luther, 1634 : Williams. 2583. 
Tunnel Hill zone. Archean, South Caro- 
lina : Sloan. 2218. 
Tuscahoma formation, Eocene, Alabama: 
Smith, 2229. 
Tuscaloosa format ion. Cretaceous, Ala- 
bama : Smith, 2229. 
Tuscaloosa formation, CretaGeous, Gulf re- 
gion : Smith, 2226, 2228. 
Tuscaloosa formation, Cretaceous, Missis- 
sippi: Crider, 595; Crider and Johnson, 
599 : Logan, H>08. 
Tuscaloosa clay. Cretaceous, Mississippi: 
Crider. 598. 
Tuscaloosa formation, Eocene, Alabama: 
Smith. 2220. 
Tuscan tuff, Tertiary, California: Oilier, 
721. 
Tuscarora formation, Silurian, Maryland : 
Clark and Mathews, 488. 
Tuscarora member, Ordovician, Virginia: 
P. ass lei-. 158. 
Tuscumbia (St. Louis) limestone, Missis- 
sippian, Alabama : Smith, 2220. 
Tusquitee quartzite, Cambrian, North Caro- 
lina : Keith, 1352. 
Twelvemile beds, Tertiary, Alaska: Brooks, 
313. 
Twentymile sandstone member, Cretaceous, 
Colorado : Fenneman and Gale, 863. 
Two-mile limestone, Carboniferous, West 
Virginia : Grimsley, 1044. 
Tyger zone, Archean, South Carolina : 
Sloan, 2218. 
Tyler red beds, Carboniferous, Appalachian 
region : Stevenson, 2205. 
Tyner formation, Ordovician, Indian Terri- 
tory : Taff, 2332. 
Tyonok beds, Alaska : Brooks, 313. 
Tyrone, Ordovician, Kentucky : Miller, 
1748. 
Uffington shales. Carboniferous, Pennsyl- 
vania : Stevenson, 2204. 
Uinta formation, pre-Cambrian, Utah : 
Weeks, 2506. 
Uinta quartzite, Utah : Emmons, 708. 
Uncompahgre formation, Algonkian, Colo- 
rado : Cross et al., 607. 
Unicoi formation, Cambrian, North Caro- 
lina and Tennessee : Keith, 1354. 
Uniontown limestone, Carboniferous, Ap- 
palachian region : Stevenson, 2205. 
Uniontown limestone, Carboniferous, West 
Virginia : Grimsley, 1044, 1046. 
Uniontown sandstone. Carboniferous, Ap- 
palachian region : Stevenson, 2205. 
Uniontown sandstone. Carboniferous, Penn- 
sylvania : Clapp, 475. 
Upson clay, Cretaceous, Texas : Udden, 
2408. 
Utica shale, Ordovician, Pennsylvania : 
Stose. 2318. 
Utica shale, Ordovician, Virginia : Bassler, 
158. 
Valcour limestone, Ordovician, New York: 
Raymond. L987. 
Valdez series, Alaska : Brooks, 313. 
Yallenar series, Devonian, Alaska : Brooks, 
313; Kindle, 1400. 
Valleytown formation, Cambrian, North 
Carolina : Keith, 1352. 
Vancouver series, Triassic and Carbonifer- 
ous?, British Columbia : Brooks, 313. 
Vanport limestone, Carboniferous, Pennsyl- 
vania : Butts, 368 ; Stevenson, 2294 ; 
Woolsey, 2634. 
Vanport limestone, Carboniferous, West 
Virginia: Grimsley, 1046. 
Vaqueros formation, Miocene. California : 
Arnold. ('>.''> : Arnold and Anderson. 66, 
67 : Eldridge and Arnold, 770. 
Vaqueros sandstone, Tertiary, California : 
Prindle, 1056. 
