Kingak Shale, Shublik Formation, and Karen Creek Sandstone, undivided

Unit symbol: KPu
Age range Lower Cretaceous to Permian (298.9 to 129.4 Ma)
Lithology: Sedimentary
Group name: Kingak Shale, Shublik Formation, and Karen Creek Sandstone, undivided
This undivided unit, mapped in northeast Alaska, consists of the Kingak Shale, Shublik Formation, and Karen Creek Sandstone. It may also include rocks generally assigned to the Siksikpuk Formation. Elsewhere in northern Alaska, the constituent units are mapped separately and described below as units KJks, Trkc, and Trgs:

Source map information

Source map Reiser, H.N., Brosge, W.P., Dutro, J.T., Jr., and Detterman, R.L., 1971, Preliminary geologic map, Mt. Michelson quadrangle, Alaska: U.S. Geological Survey Open-File Report 71-237, 2 sheets, scale 1:200,000.
Symbol JTr
Unit name Kingak Shale and Shublik Formation Undifferentiated
Description Kingak shale and Shublik Formation undifferentiated.
Lithology Sedimentary

Correlated geologic units

Label JTru
Description Kingak Shale, Shublik Formation, and Karen Creek Sandstone, undivided
Geologic age Permian to Barremian
Geologic setting Undivided
Lithology Form Importance
Shale < Mudstone < Clastic < Sedimentary Bed Indeterminate, major