CLASSIFIED POSITION OF STRATA. 
181 
TABULAR VIEW—Continaed. 
General. 
New. Mexico. 
Secondary. 
Cretaceous. 
Chalk. 
First glauconian 
Greenish sand bed of Mesilla and Doha Ana, San Pedro valley. 
Neocomien —..... 
On!it, a _ _ _______ 
Triaggic __ 
Lias___— 
Variegated marls_ 
Permian „ _ 
Muschelchalk...—. 
Magnesian limestone.. 
Red sandstone___ 
Carboniferon p 
Coal fields _ ___ 
pevonlan____ 
Millstone grits.---- 
Mountain limestone___ 
Red sandstone_____ 
Silurian _- 
Slates and limestones_ 
Igneous.... 
Primary. 
Granitoid. ...._ 
Red sandstone of Organ mountains and west to the Mim- 
bres river. 
Basin valley, from San Pedro to Mimbres, Mesilla valley. 
Calitro hills, Pinaleno, Chiricahui. 
General axes of'the mountain ranges. 
