Page snapshot: Alaska State Geologic Map; Fossil; Rock; Mineral; Gem; Highest and Lowest Elevations; Places to Visit; and Additional Resources.
Image above: Mendenhall Glacier, flowing from the Juneau Ice Field. Photograph by Jonathan R. Hendricks.
Geologic Map of Alaska
Geologic map of Alaska showing maximum ages of mappable units. Image by Jonathan R. Hendricks for the Earth@Home project developed using QGIS and USGS data (public domain) from Fenneman and Johnson (1946) and Horton et al. (2017).
Alaska State Fossil: Mammuthus primigenius
The state fossil of Alaska is Mammuthus primigenius, the woolly mammoth.
The Biederman family and their friends with a mammoth tusk, Yukon River, Alaska, 1930. Photo source: National Park Service/NPS (public domain).
Model of a woolly mammoth on display at the Royal Victoria Museum, British Columbia, Canada. Photo by Thomas Quine (Wikimedia Commons, Creative Commons Attribution 2.0 Generic license, image resized).
Alaska State Rock: None
Alaska does not have an official state rock. What do you think it should be? Answer in the comments.
Alaska State Mineral: Gold
Gold can be found and mined throughout Alaska, and has always been a major state industry and force for exploration.
Derelict gold mining barge near Fairbanks, Alaska. Photograph by Steve Jurvetson (Flickr; Creative Commons Attribution 2.0 Generic license).
Alaska State Gem: Nephrite Jade
Large deposits of this green metamorphic stone are found throughout the Seward Peninsula. It formed during accretion of the area’s terranes.
River-worn sample of nephrite jade from near Talkeetna, Alaska. Photograph by James St. John (Flickr; Creative Commons Attribution 2.0 Generic license).
Alaska's Highest and Lowest Elevations
Topographic map of Alaska. Image by "Aconcagua" (Wikimedia Commons; Creative Commons Attribution-ShareAlike 3.0 Unported license; image resized).
Highest Elevation: Denali
Denali (formerly Mt. McKinley), with an elevation of 6168 meters (20,237 feet), is the highest mountain in North America as well as Alaska. The mountain is located in Denali National Park, in the south-central part of the state, and it is considered the third most prominent peak in the world after Mt. Everest in the Himalayas and Aconcagua in the Andes.
Denali, with Wonder Lake in the foreground, Alaska. Photograph by Denali National Park and Preserve (Wikimedia Commons; public domain; image cropped and resized).
Lowest Elevation: Coastline
Alaska’s lowest points are along its coastlines, where the shore is at sea level.
Port Frederick near Hoonah-Angoon, Alaska. Photograph by Jonathan R. Hendricks.
Places to Visit
Alaska State Museum
SoHo CoHo: Ray Troll's Art Gallery
Ketchikan, Alaska. Ray Troll has provided art work for several popular books about ancient life.