Sample Detail of
Sample: Sample No. 46AKr105 -- USGS No. Mesozoic loc. 20759
Locality: Field No. 46AKr105
Description: [Shown as locality 272 on Pl. 3 of Detterman and Hartsock, 1966 - Note by R.B. Blodgett: digitization of this point gives approx. lat. 59o 39'36" N., 153o 18'43" W.][Entry card in USGS Mesozoic Fossil Locality register (Washington, D.C.) provides following description: "Mesozoic - Chinitna formation. 46AKr105. Cook Inlet, Alaska, 2.3 mi. S 44o W of Front Mt. Upper middle Chinitna formation. Dark gray arenaceous siltstone. Fossils commonly in calcareous concretions. Coll. Charles E. Kirschner. June 29, 1946."]; [C. E. Kirschner, 1946. Iniskin Peninsula, northeast corner of Oil Bay, 2.3 miles S. 44° W. of Front Mountain. Chinitna formation, near top of middle third. (description from Imlay, 1953, p. 68)]
Location: Alaska Quadrangle: Iliamna C-1
Lat.: 59o39'36 " Long.: 153o18'43 "
Reference
Title: Geology of the Iniskin-Tuxedni Region, Alaska [last half of single issue publication] ,  1966
Report by: Robert L. Detterman , John K. Hartsock
Age: Callovian (early Callovian)
Formation: Chinitna Formation - Tonnie Siltstone Member (Tonnie Siltstone Member)
Comment:Geographic location: Bowser Creek area
Map reference (pl. 3): 272
Stratigraphic position below top of formation (ft): Top
all above data from Table 10, p. 45
Occurrence(s)
No. Group Name Qty Notes
1 Ammonoids Cadoceras comma Imlay
2 Belemnites Belemnite fragments

Title: Callovan (Jurassic) ammonites from the United States and Alaska. Part 2. Alaska Peninsula and Cook Inlet Regions. USGS Proferssional Paper 249-B ,  1953
Report by: Ralph W. Imlay
Age: Callovian
Formation: Chinitna Formation
Comment:Shown as locality 69 on Figure 7.

Digitization of this locality on Figure 7 indicates coordinates of 59 40'14" N., 153 16'40" W. (note discrepancy with determined lat./long from Detterman and Hartsock, 1966, Pl. 3 location plot)

Occurrence(s)
No. Group Name Qty Notes
1 Ammonoids Cadoceras comma Imlay, n. sp.