26 Wisconsin Academy of Sciences, Arts, and Letters . 
Tabulation of Fracture Systems for the United States— Continued. 
District and Au¬ 
thority. 
High Sierra of California. 
—Becker. 
. Upper Kern Val¬ 
ley.—Lawson. 
Jb&wer Mississippi Val¬ 
ley. 
Boston Mts. in Arkansas. 
—Branner-Ne wsom. 
Ozark Mts. in Ark.— 
Powell. 
Brunswick Dist. in Indian 
Territory.—Eld ridge. 
Balcones Fault Zone in 
Texas.- Hill &Vaughan. 
TDValde Quadrangle in 
Texas.—Vaughan. 
Upper Mississippi Val¬ 
ley. 
Satire State of Wiscon¬ 
sin,—Buckley. 
So. Wisconsin—Percival. 
$W Wisconsin.—Harder. 
Entire State of Iowa.— 
McGee. 
Eastern Iowa.—Bain and 
Calvin. 
Northern Illinois. (Also 
Southwestern Wiscon¬ 
sin.'—Whitney. 
Kosioiare Dist. in So. Ill. 
—Emmons. 
Minnesota.—Upham. 
Eastern United States. 
So Conn. Valley in Conn. 
—Davis. 
Conn. Valley in Mass.— 
Emerson. 
Merid¬ 
ional or 
near¬ 
ly so. 
N-S 
N-S 
N-S? 
“ssrsr* ««*a 
near¬ 
ly so. 
rants NE 
&SW. 
ENE—W 
SW 
E-W 
NE-SW 
N—S 
E-W 
N 85° E 
N 85° W 
N 5‘ 
E i E—W 
' N 85 u W 
N 85° E 
N5»W 
circa. 
N-S 
N-S 
N-S 
N-S 
(nearly.) 
N-S 
N 85° E 
circa 
Noarly 
E-W 
E-W 
E—W 
N of E— 
S of W 
NE-SW 
NE-SW 
In quad¬ 
rants 
NW & 
SE. 
N NW—S 
SE 
Remarks. 
NW-SE 
N 20° W 
N 50° W 
N 35° E 
N 45° E 
N 50° E 
N 55° E 
N 65° E 
N 75° E 
N 35° E 
circa 
NW-SE 
NW-SE 
NW-SE 
N 70° W 
N 80° W 
N 25° W 
N 35° W 
N 45° W 
N 55° W 
N 55° W 
circa 
N 25® E 
N 32° E 
N 50° — 
57° E 
N 60° E 
N 30° — 
45° E 
N 10®- 
15° E 
N 20° E 
N 20°— 
30° E 
N 45 *V 
N 20°— 
30° W 
N 50° W 
Two diagonal sets 
sometimes found 
striking between 
N-S and NW- 
SE, and dipping 
45® either way. 
Also rarely hori¬ 
zontal sets. 
Other directions of 
minor importance. 
Also minor faults. 
Main direction NE- 
SW. 
Form two rectangu¬ 
lar sets. 
Main direction E—W 
A third series is 
mentioned at 45° to 
others. 
Not sufficient num¬ 
ber o 1 planes ob¬ 
served to clearly in¬ 
dicate these as 
series. 
Scattered observa¬ 
tions. 
Directions taken 
from map. 
Values are approxi¬ 
mate only and 
taken from map. 
