534 
INDEX    TO    NORTH    AMERICAN    GEOLOGY 
Geologic  formations  described — Continued. 
Ripley  formation.  Cretaceous,  Alabama, 
Smith   (E.  A.),  2. 
Ripley  formation,  Cretaceous,  Missis- 
sippi, Logan,  -. 
Riversdale  formation,  Carboniferous, 
Canada,  Ami,  40. 
Roan  gneiss,  Arehean,  North  Carolina, 
Keith,  4,  9,   1-'. 
Roaring  Creek  sandstone  (Upper  Free- 
port  sandstone),  Carboniferous,  West 
Virginia,  White   (I.  C. ) ,  7. 
Rochester  shale,  Silurian,  New  York, 
Grabau,  1. 
Rock  Creek  beds,  Pleistocene,  Texas, 
Gidley.  4. 
Rockford  limestone,  Carboniferous,  In- 
diana, Siebenthal,  2. 
Rockford  goniatite  limestone,  Carbon- 
iferous,   Indiana,    Newsom,    :'». 
Rockford  goniatite  limestone  Missis- 
sippian,  Indiana,  Hopkins  (T.  C), 
11. 
Rockmart  slate.  Silurian,  Georgia, 
Hayes.  ."». 
Rockwood  formation,  Silurian,  Tennes- 
see. Keith,   1. 
Rockwood  formation,  Silurian,  Ala- 
bama  and   Georgia,   Hayes,   5. 
Rockwood  formation,  Cambrian,  Ten- 
nessee. Keith.  11. 
Rogersville  shale,  Cambrian,  Tennes- 
see. Keith,  1,  11. 
Rome  formation,  Cambrian,  Tennessee, 
Keith,  1.  11. 
Rome  formation,  Cambrian,  Alabama, 
Hayes.  ."». 
Romney  formation,  Devonian,  Mary- 
land, Prosser.  ::. 
Romney  formation,  Devonian,  Mary 
land.  Prosser,  12. 
Roundout  water  lime,  Silurian,  New 
York,  Grabau,  1. 
Roundout     beds,     Silurian.     New    York. 
Van  Ingen  and  Clark,  1. 
Roundout      formation.     Silurian,     New 
Jersey,  Weller.  (». 
Roundout  formation,  Silurian,  New 
York.  Hartnagel,  1. 
Roundout  waterlime,  Ontario,  New 
York.  Clarke.  20. 
Roundout  waterlime,  Silurian,  New 
York,  Clarke  and  Luther.  .",. 
Rosamond  series,  Tertiary,  California, 
Hershey,  10. 
Rosebud  beds,  Miocene.  South  Dakota, 
Matthew  and  Gidley,  1. 
Rosiclare  member,  Carboniferous   (Mis- 
sissippian),  Illinois,  Bain,  19. 
Rosiclare       sandstone,       Mississippian, 
Kentucky,  Ulrich.  8. 
Roslyn    formation.    Tertiary,    Washing- 
ton, Smith   (G.  O.),  8,  1.3. 
Ross   limestone,   subdivision   of    Linden 
bed,  Devonian,  Tennessee,  Foerste,  7. 
Roubidoux  sandstone,  Ordovician,  Mis- 
souri, Gallaher,  1', 
Geologic  formations  described — Continued. 
Roubidoux  sandstone,  Or<lovician,  Mis- 
souri, Adams  (G.  I.),  3. 
Roubidoux  formation,  Cambrian  and 
Ordovician,  Missouri,  Bain  and  Ul- 
rich, 2. 
Rove  slate,  included  in  Upper  Huro- 
nian,  Minnesota,  Clements,  3. 
Roxton  beds,  Cretaceous,  Texas,  Hill 
(R.  T.),  3. 
Ruin  granite,  pre-Cambrian,  Arizona, 
Ransome,  6,  13. 
Russell  formation,  Cambrian,  Virginia, 
Watson  (T.  L.),  17. 
Rustler  formation,  Permian,  Texas, 
Richardson  (  G.  B.),  4. 
Rutledge  limestone.  Cambrian,  Tennes- 
see, Keith,  1,  11. 
Rysedorph  conglomerate,  Champlainic, 
New  York,  Clarke,  20. 
Sabine  (Lignitic),  Tertiary,  Louisiana, 
Veatch,  7. 
Sac  limestone,  Carboniferous,  Mis 
souri,  Weller,  1. 
Sac  limestone,  Carboniferous,  Mis- 
souri. Adams   (G.  I.),  3. 
Saccharoidal  .  sandstone,  Ordovician, 
Missouri,  Adams  (G.  I.),  3. 
Saccharoidal  sandstone,  Missouri. 
Broadhead,  8. 
Sage  Creek  beds,  Tertiary,  Montana, 
Douglass,  8. 
Saginaw,  Carboniferous,  Michigan, 
Lane,  4. 
Saginaw  formation,  Carboniferous, 
Michigan,  Russell,  0. 
St.  Clair  limestone,  Upper  Silurian, 
Arkansas.   Adams    (G.   L),  3. 
St.  Clair  limestone,  Silurian,  Arkan- 
sas, Ulrich,  5. 
St.  Clair  marble.  Silurian,  Indian  Ter- 
ritory, Taff.  17. 
St.  Croix  sandstone,  Iowa,  Beyer  and 
Williams.   2.    ■ 
St.  Elizabeth  formation,  Cambro-Ordo- 
vician,  Missouri.  Ball,  1. 
St.  Elizabeth  formation,  Ordovician, 
Missouri,  Ball  and  Smith,  1. 
St.  Elizabeth  formation,  Cambro-Ordo- 
vician,  Missouri,  Van  Horn,  1. 
Ste.  Genevieve  sandstone,  Carbonifer- 
ous, Missouri,  Gallaher,  1. 
Ste.  Genevieve  limestone,  Carbonifer- 
ous (Mississippian),  Illinois,  Bain, 
10. 
Ste.  Genevieve  limestone,  Mississip- 
pian, Mississippi  Valley,  Ulrich,  8. 
St.  Helena  rhyolite,  Tertiary,  Califor- 
nia, Osmont,  1. 
St.  Joe  limestone  member,  Mississip- 
pian, Arkansas,  Adams  and  Ulrich,  1. 
St.  Joe  limestone,  Carboniferous,  Mis- 
souri, Gallaher,  1. 
St.  Joe  limestone,  Carboniferous,  Ar- 
kansas, Adams    (G.   I.),   15. 
St.  Joe  limestone,  Carboniferous,  Ar- 
kansas, Ulrich,  5, 
