24
TABLE OF FORMATIONS—Concluded

Formation or

Era Period or epoch group Lithology
Thickness in feet
Pennsylvanian . Chert, on Alaska Highway
or Paraian (Kindle*) near mile 381 d
Marine limestone and shale,
P eas on Pine River between
STEN Callazon and Mountain
Creeks
Marine limestones, silty
arenaceous limestone and
shale ts Alaska ea iba
steer sieves 400 + (includes dark limestones of Fossi
Mississippian Kindle*) Point, Peace River; lime-
stone, siliceous limestone,
west of Mount Withrow,
Paleozoic Sikanni Chief River
Marine ouestone below;
black fissile shale above
Devonian re on Alaska Highway;
1.300 + black limestone on islet
pole on Peace River above
mouth of the Clearwater
(Muncho* and Unfossiliferous limestones,
Devonian ? McConnell*) sandy limestones, and
1,800 + sandy siltstones
ie Marine, black, shaly lime-
eye onning stone, dolomitic lime-
Silurian 1,200+ stone, on Alaska High-
way
Ordovicrn Limestones and dolomites
on Halfway River
* Conglomerates and sand-
eas stones of Muncho Lake;
: eenal wmmnorracyl. massive quartzite and
Cambrian ? ipeoals calcareous shale of Mount
3.500 -+ to 5,000 -+ Selwyn; limestone of Fin-
po ae ™— | lay Valley
Angular unconformity
Quartzite, schist, argillite,
slate, intruded by dykes
Proterozoic and (?) Misinchinka and on Alaska Highway; mica
later (nanrinaeal eal schist, gneiss (Misinchin-

ka) of Peace and Finlay
Valleys; includes Cam-
brian ?

*Named by Laudon and Chronic, 1947, 1949.