Sample Detail of
Sample: Sample No. 48AI34 -- USGS No. Mesozoic loc. 21317
Locality: Field No. 48AI34
Description: [Shown as locality 74 on Pl. 3 of Detterman and Hartsock, 1966][Entry in USGS Mesozoic Fossil Locality register (Washington, D.C.) provides following description: "Orig. no. 48AI34. Middle Jurassic - Tuxedni Fm - Fitz Creek member. Same geographical location as no. 21292. East side of Fitz Creek, 2.12 (Note: the 1 in 2.12 is not certain, indistinct) miles N 86 (note: number is not clearly legible) of Tonnie Peak. Limestone concretions in gray siltstone, 25 to 35 ft. below a 20 ft. sandstone. Probably --- (indistinct) ---. Same location as lots 10981, 11022 to 11029 incl. 19940. July 18, 1948." (note by R.B. Blodgett: entry hard to read in places due to writting in light pencil)]
Location: Alaska Quadrangle: Iliamna D-1
Reference
Title: Geology of the Iniskin-Tuxedni Region, Alaska ,  1966
Report by: Robert L. Detterman , John K. Hartsock
Age: Bajocian (middle Bajocian)
Formation: Fitz Creek Siltstone
Comment:Geographic location: Fitz Creek area
Map reference (pl. 3): 74
Stratigraphic position below top of formation (ft): 300-400
all above data from Table 6, p. 32
Occurrence(s)
No. Group Name Qty Notes
1 Ammonoids Chondroceras allani (McLearn)