LISTS GEOLOGIC FORMATIONS. 
309 
Selma clay. Cretaceous, Tennessee : Glenn, 
971. 
Sespe formation, Eocene-Oligocene, Cali- 
fornia : Arnold, 63 ; Eldridge and Arnold, 
770. 
JSespe formation, Tertiary, California : Ar- 
nold and Anderson, (57. 
Sespe sandstone. Eocene or Oligocene, Cal- 
ifornia : Arnold and Anderson, 66. 
Setters quartzite, Algonkian, Maryland : 
Clark and Mathews, 488. 
Seven Sisters sandstone member, Carbonif- 
erous, Kentucky : Ashley and Glenn, 77. 
Severy shales. Carboniferous, Kansas: 
Wooster, 2636. 
Sevier shales, Ordovician, Virginia: Bass- 
ler, 158. 
Sewickley limestone, Carboniferous, West 
Virginia: Grimsley, 1044, 1046. 
Sewickley sandstone. Carboniferous, Appa- 
lachian region : Stevenson. 2295. 
Sewickley sandstone. Carboniferous, West 
Virginia : Grimsley, 1046. 
Shady limestone, Cambrian, Tennessee: 
Keith. 1354. 
Shakopee formation, Ordovician, Iowa : 
Calvin, 387, 388. 
Shakopee formation, Ordovician, upper Mis- 
sissippi Valley : Bain, :):». 
Shakopee limestone, Ordovician, Iowa : 
Beyer and Williams, 234. 
Bhawangunk conglomerate, Silurian, New 
York : Ilartnagel, 1084. 
Bhawangunk grit, Silurian, New York : 
Clarke. 40!) ; Grabau. 991. 
Shenandoah limestone, Cambro-Ordovician, 
Maryland : Clark and Mathews, 488. 
Shenandoah limestone, Cambro-Ordovician, 
Pennsylvania : Stose, 2318. 
Shenandoah limestone, Cambro-Ordovician, 
West Virginia : Grimsley, 1044. 
Shenandoah limestone group, Cambrian, 
Virginia : Bassler, 158. 
Sherburne formation, Devonian, New Yoi"k : 
Grabau, 991. 
Sherburne flagstone member, Devonian, New 
York : Willi;) ms. 2583. 
Bhinarump conglomerate, Triassic, Utah : 
Cross. 004 : Lee, 1544. 
Shuswap series, British Columbia: Daw- 
son, 686. 
Shuswap series, Archean, Yukon Territory : 
H Brooks. 313. 
Biamo slate. pre-Cambrian, Michigan: Lane 
and Seaman, 1518. 
Biebert Lake beds, Pliocene, Nevada : Ball, 
1 '_'(). 
Killery formation, Cambrian, Canada : 
Young, 2660. 
Silver Creek hydraulic limestone, Devonian. 
Indiana : Blatchley, 246. 
Silver Pipe limestone, Mississippian, New 
Mexico : Gordon. 981 . 
Silver Plume granite, pre-Cambrian, Colo- 
rado : Ball, 1 18. 
Silver Terrace sandstone, California: Cran- 
dall, 591. 
Silverton volcanic series, Colorado: Cross 
et al., 607. 
Similkameen granite, Tertiary, Cascade 
Mountains : Daly, 632. 
Sioux quartzite, pre-Cambrian, Iowa : Cal- 
vin, 387. 
Sioux quartzite, Proterozoic, Iowa : Beyer 
and Williams, 234. 
Skagit series, Alaska : Brooks, 313. 
Skaneateles shale, Devonian, New York: 
Luther, 1633. 
Skolai volcanics, Triassic, Alaska : Brooks, 
313. 
Skwentna complex, Alaska : Brooks, 313. 
Smithfield limestone member. Cambrian, 
Rhode Island : Emerson and Perry. 790. 
Smith River beds. Tertiary. Montana: 
Rowe, 2090. 
Snoqualmie granodiorite. Tertiary. Wash- 
ington: Smith and Calkins. 2240. 
Snowbird formation, Cambrian, Tennessee: 
Keith, 1354. 
Socorran series, Carboniferous, New 
Mexico : Keyes, C177. 
Sodus shale, Silurian. New York : Clarke, 
494 ; Hartnagel, 1085. 
Soudan formation, Archean, Minnesota : 
Abbott, 1. 
Southgate member, Ordovician, Ohio and 
Kentucky : Bassler, 156. 
Spadra shale, Carboniferous, Arkansas : 
Collier, 556. 
Spearflsh formation, Triassic, Wyoming : 
Darton and O'Harra, 656. 
Spergen limestone. Mississippian, Illinois: 
Eenneman, 860; Weller, 2523. 
Spergen limestone, Mississippian, Missouri : 
Shepard, 2194. 
Spergen Hill limestone, Mississippian, Illi- 
nois : Bowman and Reeds, 277. 
Spokane formation, Algonkian, Montana : 
Barrell. 149. 
Spokane shale, Algonkian, Montana : Rowe, 
2090. 
Spring Creek granite, Colorado: Graton, 
1026. 
Springvale beds, Mississippian, Iowa : Beyer 
and Williams, 234. 
Square Lake limestone, Devonian, New 
York : Grabau, 991. 
Stafford limestone, Devonian, New York : 
Luther. 1633. 
Standish shales, Devonian, New York : 
Luther, 1634. 
Stanton limestone, Carboniferous. Kansas: 
Beede and Rogers, 181 ; Wooster. 2636. 
State Quarry limestone, Devonian. Iowa ■ 
Beyer and Williams, 1':; 1 ; Calvin, 387. 
Stennett limestone, Pennsylvanian, Iowa : 
Lever and Williams, 234. 
Sterling granite-gneiss, Connecticut: Greg 
ory. 1034 ; Gregory and Robinson, 1038. 
Stockbridge dolomite, Cambro-< >rdovieian, 
Connecticut : Bobbs, 1 185. 
Stockbridge limestone, Connecticut : Greg- 
ory, 1034. 
