Cambro-Ordovician. 
Algonkian. 


STRATIGRAPHY OF CHI-LI AND SHAN-SI. 












Feet. | Meters. 
20+ 6+ 
(ee 
SS SS BR SE 
SSS SS 75 23 
= 
Postes 3} 5455) 
eae ee 
aa Ea a eal 
a eee oe 
og | anes (eae |i 
aa ae | ae) 2 le BO 33 
lea el 
BDESA BESS 
i-chd (7 Taman < | ira 
Rien evra Rema 
limestones. 
65 20 
oe 
45 14 
15 4-5 
9 3 
8 2.5 
5 1.5 
39 9 
T2 3.5 
35 10.5 
80 25 
Man-t’o : 
shales. 40 L255 
30 9) 
4 Eas 
12 éhok: 
a 3to15|! to 5 
Hu-t’ 
tia 610+| 180+ 
System 
139 

Dense blue limestone. 
Ocherous, gray, dense, conglomeratic 
limestone. 
Massive ocherous gray limestone. 
Brown and gray shales and thin- 
bedded limestone. 
Massive gray oolitic limestone. 
Gray shales. 
Gray crystalline limestone. 
Gray calcareous shale. 
Oolitic limestone. 
Gray and buff shales with limestone 
nodules. 
Hard brown-gray oolitic limestone. 
Slabby buff limestone, dense and 
hard. 
Red shales with thin reddish lime- 
stones. 
Red shale and argillaceous lime- 
stone with thin yellow limestones. 
Red shale and thin limestone. 
Argillaceous yellow limestone. 
Red calcareous shale. 
Red sandstone and conglomerate. 
Purple argillites; siliceous limestones 
and dikes of greenstone. 
Fic. 33.—PARTIAL SECTION OF THE SINIAN SYSTEM SouTH OF TUNG-YU, SHAN-SI. 
STATEMENT OF OBSERVATIONS. 
Vicinity of Ning-shan, Chi-li.—In western Chi-li the Sinian is exposed 
in a syncline near Ning-shan (Figs. 48 and 49). 
The outcrop extends 
in a broad belt from the Sha-ho on the west, a distance of more than 25 
miles, 40 kilometers, east-northeast. 
Sinian rests in contact with the T’ai-shan gneiss, along a normal fault; 
On the north side of this belt the 
