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Shipment No.: A-59-4M
Referred by: Pomeroy, J. S.
Report prepared by: Cobb, E. H.
Date: 07/15/1959

To: Jack Pomeroy, c/o Alaskan Geology Branch, USGS, P.O. Box 2659, Juneau, Alaska

July 15, 1959

From: E.H. Cobb, Alaskan Geology Branch, USGS, Meno Park, California

Fossils; 59ABg6, 59APy244, 59APy301

Norm Silberling looked at your fossils and came up with the following preliminary guesses:

59ABg6 - Mesozoic; could be anywhere in the column, but looks like Cretaceous. Norm will workem over and give a formal report soon.

59 APy244 and 59APy301 - Probably Tertiary. Will be sent to the paleobotanist at CAl.

Ernie is still pretty well laid up, but seemed fairly comforatable last weekend. He would like to get back to Alaska about August first, but is far from hopeful.

E.H. Cobb
Geologist in Charge
Technical Data Section

User Note module to be added
59ABg6 (Mesozoic loc. M530) , Sitka , Assigned USGS Loc. 530 in my report on shipment of A-59-4M dated 7/20/59. Sitka A-2 coordinates: 12.32, 8.53. (from Silberling E&R report of 7/21/59) [Silberling E&R report of 7/20/59 provides following description: Alaska, Admiralty Island. Near top of thin- to medium-bedded gray limestone that overlies thin-bedded fine-grained brownish gray crystalline limestone; total exposed thickness of limestone exceeds 200 feet. North shore of Herring Bay. Sitka A-2 quad; 12.32 in. perpendicular from west margin, perpendicular intersects west margin 8.53 in. up from SW corner. Coll.: H.C. Berg, 1959][Transmittal sheet of Lathram dated July 13, 1959, provides following description: Ammonites, cephalopods from near top of thin-to-medium-bedded gray ls. that overlies thin-bedded fine-grained brownish gray ls. Entire ls. unit not exposed but thickness exceeds 200 feet. Possibly Mesozoic-Triassic field stratigraphic assignment. Sitka A-2 coords: (12.32, 8.53)] [Transmittal sheet of Lathram dated 6/30/59 provides the following description: Ammonite and uncoiled cephalopod from near top of thin- to medium-bedded gray limestone that appears to underlie 59ABg5 and 5A. Entire limestone unit not exposed, but thickness exceeds 200 feet. Possibly Mesozoic/Triassic field stratigraphic assignment. Sitka A-2 coords: 12.32, 8.53]
59APy244 , Sitka , Transmittal sheet of E.H. Lathram, dated July 13, 1959 provides following description: Dark carbonaceous fine-grained sandstone and minor shale. Plant remains, stems, and leaf prints. Believed to be in the lower part of the Tertiary. Previous mapping in the Kootznahoo Inlet area (1906, Bull. 287, Wright) revealed the presence of plant remains which were identified as being Eocene or equivalent to the Arctic Miocene. These additional floral remains should be studied to determine where or not they represent Eocene flora. Sitka C-2 coords: (8.85, 3.50) Sitka B-2 coords: (4.05, 0.15).
59APy301 , Sitka , Transmittal sheet of E.H. Lathram, dated July 13, 1959 provides following description: Dark carbonaceous fine-grained sandstone and minor shale. Plant remains, stems, and leaf prints. Believed to be in the lower part of the Tertiary. Previous mapping in the Kootznahoo Inlet area (1906, Bull. 287, Wright) revealed the presence of plant remains which were identified as being Eocene or equivalent to the Arctic Miocene. These additional floral remains should be studied to determine where or not they represent Eocene flora. Sitka C-2 coords: (8.85, 3.50) Sitka B-2 coords: (4.05, 0.15).