520 
INDEX    TO    NORTH    AMERICAN    GEOLOGY 
Geologic  formations  described — Continued. 
Laramie  formation,  Cretaceous,  Black 
Hills  region,  Wyoming,  and  Colorado, 
Darton,    18. 
Laramie  formation,  Cretaceous,  Colo- 
rado, Fenneman.  10. 
Laramie  formation,  Cretaceous,  North 
Dakota,  Leonard,  4. 
Laramie  stage,  Cretaceous,  Wyoming, 
Trumbull,    1. 
Lauderdale  chert,  Carboniferous,  Ala- 
bama, Stevenson  (J.  J.),  4. 
Laurel  limestone,  Silurian,  Kentucky 
and  Tennessee,  Foerste,   1. 
Laurel  limestone,  Silurian,  Indiana. 
Foerste,  11. 
Laurel  limestone,  Silurian,  Tennessee, 
Foerste,    7. 
Laurentian,  Ontario,  Bolton,  1. 
Laurentian,  Ontario,  Graton,  2. 
Lawrence  beds,  Carboniferous,  Kansas, 
Wooster.    1,    2. 
Lebanon  limestone.  Ordovician,  Tennes- 
see, Hayes  and  Ulrich,   1. 
Lecompton  limestone,  Carboniferous, 
Kansas,  Adams,  Girty,  and  White,  1. 
Lecompton  limestone,  Carboniferous, 
Kansas,   Beede,  6. 
Lecompton  beds.  Carboniferous,  Kan- 
sas, Wooster,  1,  2. 
Led;)  clay.  Canada,  Coleman,  5. 
Lee  conglomerate,  Carboniferous,  Ten- 
nessee, Keith,  1. 
Lego  limestone,  Silurian,  Tennessee, 
Foerste,  7. 
Leipers  formation,  Ordovician,  Tennes- 
see, Hayes  and  Ulrich,  1. 
Leipers  Creek  limestone,  Cincinnati 
group,  Ordovician.  Tennessee, 
Foerste,    C>. 
Lenox  limestone  member,  Carbonifer- 
ous, Utah,  Keith,   1.".. 
Le  Roux  beds,  Triassic,  Arizona.  Ward 
(I,  F.),  1. 
Leroux  member.  Triassic,  Arizona, 
Ward    i  L.  P.).,  5. 
Le  Roy  shales,  Carboniferous,  Kansas, 
Adams,  Girty,  and  White,  1. 
Lesenr  dolomite,  Cambrian,  Missouri. 
Keyes,  <">. 
Leseuer  limestone,  Cambrian.  Missouri. 
Adams    (G.    [.),   3, 
Lewis  shale,  Cretaceous,  Colorado, 
Cross   and   Spencer,    1. 
Lewisville  beds,  Cretaceous,  Texas.  Hill 
(R.  T.),  3. 
Lexington  group,  Ordovician.  Kentucky, 
Nickles,  6. 
Lexington  limestone,  Ordovician,  Ken- 
tucky, Miller  (A.  M.),  4. 
Liberty  beds,  included  in  Richmond 
group,  Ordovician,  Ohio  and  Indiana, 
Nickles,  5. 
Liberty      beds,      Ordovician,      Indiana, 
•      Foerste,  11. 
Liberty  Hall  limestone,  Ordovician, 
Virginia,  Campbell   (H.  D.),  1. 
Geologic  formations  described — Continued. 
Liguitic,  Eocene,  Tertiary,  Louisiana, 
Veatch,  2. 
Lignitic  stage,  included  in  Eocene,  Ter- 
tiary, Louisiana,  Harris,  2. 
Lignitic  formation,  Eocene,  Louisiana, 
Harris,  3. 
Lignitic  stage,  Eocene,  Texas,  Dumble, 
13. 
Lignitic  clay,  Tertiary  (Eocene),  Mis- 
sissippi, Logan,  2. 
Lime  Creek  shales,  Devonian,  Iowa, 
Beyer  and  Williams,  2. 
Lime  Creek  shales,  Devonian,  Iowa, 
Eckel  and  Bain,  1. 
Linden  bed,  Devonian,  Tennessee, 
Foerste,  7. 
Linden  limestone,  Tennessee,  Foerste,  5. 
Linville  metadiabase,  Algonkian (  ?) , 
North  Carolina  and  Tennessee,  Keith, 
4. 
Lisbon  group,  New  Hampshire,  Hitch- 
cock (C.  H.),  10. 
Lisburne  formation,  Devonian,  Alaska, 
Schrader,  1 ,  '.'>. 
Lista  Blanca  division,  Triassic,  Ari- 
zona, Dumble,  7. 
Lithodendron  member,  Triassic,  Ari- 
zona. Ward   (L.  P.),  5. 
Little  Cottonwood  granite,  Utah,  Em- 
mons  (S.  F.),  9. 
Little  Falls  dolomite,  Champlainic,  New 
York,  Clarke,  20. 
Littlehorn  limestone,  Carboniferous, 
Wyoming,  Darton,  16,  18. 
Llanfair  sandstone,  Carboniferous, 
Pennsylvania,  Butts,  7. 
Loekatong.  included  in  Newark,  New 
Jersey.  Knapp  (G.  N.),  1. 
Lockport  limestone.  Silurian.  New  York. 
Synonym,  Niagara  limestone,  Grabau, 
1. 
Lockport  limestone,  Silurian,  Indiana, 
Kindle,  2. 
Lockport  dolomite,  Ontaric,  New  York, 
Clarke,  20. 
Logan  formation,  Carboniferous,  Ohio, 
Prosser,  1,  10. 
Logan  group,  Carboniferous,  Ohio,  Bow- 
nocker,  3,  5. 
Logan,  Carboniferous,  Ohio,  Steven- 
son (J.  J.),  4. 
Logan,  upper  part  of  Pocono,  Carbonif- 
erous, Appalachian  region,  Steven- 
son, (j.  jr.),  4. 
Logan  sills,  Minnesota,  included  in  Ke- 
weenawan,  Clements,  3. 
Logana  bed,  Ordovician,  Kentucky,  Mil- 
ler (A.  M.),  4. 
Lone  Mountain  limestone,  Nevada, 
Spurr,  0. 
Long  Beards  riffs  sandstone,  Devonian, 
New  York,  Luther,  2. 
Longbeards  riffs  sandstone,  Devonic, 
New  York,  Clarke,  20. 
Long  Branch  sand.  Cretaceous,  New 
Jersey,  Prather,  4. 
