LIST OF AMERICAN FORMATIONS. 



1515 



Garden City limestone, Canadian, Utah. 



Garrard sandstone, Eden, Kentucky. 



Gasconade limestone, Ozarkian, Missouri. 



Gaeport limestone member, Upper Nia- 

 garan, New York. 



Gilbert member, Maysville, Kentucky. 



Girardeau limestone, Upper Medinan, 

 Illinois and Missouri. 



Glade limestone (= Lebanon), Stones 

 River, Tennessee. 



Glen Falls limestone, Trenton, New York. 



Glenooe marble (Galena). Mohawkian, 

 Illinois. 



Glens Falls black marble, Silurian, Ar- 

 kansas. 



Glenkirk limestone. Niagaran, west Ten- 

 nessee. 



Glenwood shales, base of Platteville, 

 Iowa and Minnesota. 



Goodsir formation, Canadian, British Co- 

 lumbia. 



Goshen schist, Ordovician (?), Massachu- 

 setts. 



Gower formation, Cayugan, Illinois and 

 Iowa. 



Grand Rapids sandstone (=Sylvania), 

 Monroan, Ohio, etc. 



Granville serpentines, Ordovician (?), 

 Massachusetts. 



Gratz shale (of Cynthiana), Trenton, Ken- 

 tucky. 



Gray sandstone (of Oswego), Silurian, 

 New York. 



Greendale bed (of Cynthiana), Trenton, 

 Kentucky. 



Greenfield dolomite, Upper Cayugan, 

 Ohio and Michigan. 



Green Fond conglomerate, Upper Medi- 

 nan, New Jersey and New York. 



Greylock schist, Ordovician (?), Massa- 

 chusetts. 



Grimsby sandstone, Upper Medinan, On- 

 tario. 



Grizzly formation, Silurian, California. 



Guelph dolomite, Niagaran. Ontario, New 

 York, Michigan, etc. 



Gun River formation, Anticostian, Anti- 

 costi Island, Quebec. 



Gunter Bandstone (member of Gasconade) 

 Ozarkian, Missouri. 



Hancock limestone, Cayugan, east Ten- 

 nessee. 



Harding sandstone, Black River (just 

 below Kimmswick limestone), Colorado. 



84243°— Bull. 92— vol 2—10 51 



Hardwiek gneiss, Ordovician(?), Massa- 

 chusetts. 



Hartwiek terrane, Silurian, Iowa. 



Hawley schist, Ordovician(?), Massachu- 

 setts. 



Hei^kell shale, Upper Chazyan, Virginia 

 and Tennessee. 



Henryhouse shale, Niagaran, Oklahoma. 



Hermansville limestone, Cambrian-Ordo- 

 vician, Michigan. 



Hermitage limestone, Trenton, Tennessee 

 and Kentucky. 



Highbridge limestone, Stones River- 

 Black River, Kentucky. 



High Falls shale, Lower Cayugan, New 

 York and New Jersey. 



Hillsboro sandstone, Upper Cayugan, Ohio. 



Hinton division of San Saba series, Silu- 

 rian^), Texas. 



Hitz layer of Saluda, Richmond, Indiana. 



Holland sandstone (=Sylvania), Monroan, 

 Ohio. 



Holston marble, Blount group, Tennessee 

 and Virginia. 



Hoosac schists, Ordovician, Massachu- 

 setts. 



Hoover division, Silurian(?), Texas. 



Hopkinton dolomite, Niagaran, Iowa and 

 Minnesota. 



Hoyt limestone, Upper Cambrian or 

 Ozarkian, New York. 



Hudson River beds or group, Ordovician, 

 New York, etc. 



Hudson shale and schist, Ordovician, New 

 York, etc. 



Hull limestone, Trenton, Central Ontario. 



Huntington limestone, Niagaran, north- 

 ern Indiana. 



Hunton formation, Silurian and Lower 

 Devonian, Arkansas. 



Hurrah slate, Post Ordovician, Alaska. 



Hydraulic limestone, Silurian, New York, 

 etc. 



Indian Fields formation, Clinton, eastern 

 Kentucky. 



Indian Ladder beds, Eden, New York. 



Inwood limestone, Ordovician(?), New 

 York. 



Irondequoit limestone, Upper Clinton, 

 New York and Ontario. 



Irasburg conglomerate, Ordovician, Ver- 

 mont. 



Iron Ridge ore bed, Upper Medinan, A\ l.-i- 

 consin. 



