Geologic Unit: Sagwon

Usage:

Sagwon Member of Sagavanirktok Formation (AK*)

Geologic age:

early Tertiary (late Paleocene)*

Type section, locality, area and/or origin of name:

Type section: ridgetops on west side of Sagavanirktok River near abandoned Sagwon airstrip and south of Trans-Alaska Pipeline Pump Station 2 (Dalton Highway, mile 359); starting from VABM Gard (elevation 1,210 ft.), in sec. 27, T. 1 N., R. 14 E., and extending 1 mi south along river bank, [from approx. Lat. 69 deg. 24 min. 40 sec. N., Long. 148 deg. 40 min. 25 sec. W., to Lat. 69 deg. 23 min. 54 sec. N., Long. 148 deg. 40 min. 30 sec. W., Sagavanirktok B-3 quadrangle, scale 1:63,360], northern AK. [Named from Sagwon, adjacent to airstrip, about 3 mi southwest of VABM Gard] (Detterman and others, 1975; Mull and others, 2003).
Reference sections: (1) about 6 mi downstream from Sagwon airstrip in a vertical bluff on east side of Sagavanirktok River, in NE/4 sec. 18, T. 1 N., R. 15 E., [Sagavanirktok B-3 quadrangle, scale 1:63,360]; (2) in a stream meander bluff of the Toolik River, in N/2 sec. 13, T. 1 S., R. 12 E., [Sagavanirktok B-4 quadrangle, scale 1:63,360]; and (3) upper part of member exposed along west side of Toolik River, in E/2 sec. 1, T. 2 N., R. 12 E. to NW/4 sec. 6, T. 2 N., R. 13 E., [Sagavanirktok C-4 quadrangle, scale 1:63,360] (Mull and others, 2003).

AAPG geologic province:

Alaska Northern region*