Skip to main content
U.S. flag

An official website of the United States government

Leave no stone unturned

By Alaska Science Center August 2023 (approx.)
Male geologist, kneeling with hand on rock with rifle on ground, and helicopter and evergreen trees in background.
Original Thumbnail Medium

Detailed Description

USGS researcher collecting one more sample while waiting for the helicopter in Kanuti, Alaska. The Kanuti ophiolite is a mafic-ultramafic thrust sheet of probable Jurassic age, formerly considered to be the upper part of the Yukon-Koyukuk ophiolite (Angayucham terrane). It is here called the Kanuti ophiolite after the Kanuti River region on the southeastern flank of the Yukon-Koyukuk Basin.

Sources/Usage

Public Domain.

Photo by Jonathan Caine, U.S. Geological Survey