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USGS 2689 - northeast end of Heceta Island (Devonian of the United States)

Also known as 03RB16; 47-AH-R120(F)

Where: Prince of Wales County, Alaska (55.8° N, 133.3° W: paleocoordinates 15.6° S, 84.8° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Eognathodus sulcatus sulcatus conodont zone, Karheen Formation, Pragian (412.3 - 409.1 Ma)

• Savage (1977) found conodonts.

•Has been put in Karheen formation, but that should be restricted to the Late Silurian; Blodget et al (2010) note that it is very similar to Soda Creek.

• group of beds-level stratigraphic resolution

Environment/lithology: reef, buildup or bioherm; silty limestone

• Allocthonous deposits. General geological setting interpreted as island arc, in which shelly fossiliferous units represent carbonate banks and reefs. In some places these are associated with plant-bearing or graptolite-bearing shales.
• limestone, shaly limestone and shale.

Size class: macrofossils

Collected by Eberlein in 1947; reposited in the USGS, USNM

Primary reference: E. Kirk and T. W. Amsden. 1952. Upper Silurian brachiopods from southeastern Alaska. United States Geological Survey Professional Paper 233-C:53-55 [A. Miller/S. Kolbe] more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 109022: authorized by Arnold Miller, entered by Sarah Kolbe on 10.05.2011, edited by Pete Wagner

Creative Commons license: CC BY (attribution)