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Frederic H Wilson

Research Geologist

Alaska Science Center

Office Phone: 907-786-7448
Fax: 907-786-7401
ORCID: 0000-0003-1761-6437

4210 University Drive
Anchorage , AK 99508-4626

Supervisor: Marti L Miller
In 2016, with National Park Service support, several previously undated plutons were sampled in Glacier Bay National Park and Preserve along the west side of Glacier Bay for age determinations. Geochronologic analyses were conducted to determine the ages of the plutonic rocks in the Glacier Bay area. Five samples were collected by Frederic Wilson (USGS Alaska Science Center), from Dundas Bay and Geikie Inlet, and dated by laser ablation-inductively coupled plasma mass spectrometry U-Pb methods. The dates obtained ranged from approximately 112-118 Ma, indicating that these samples are younger than the Saint Elias plutonic suite (ca. 160 Ma-130Ma), which runs along the same trend as the sampled rocks to the south.
This data set represents part of a systematic effort to release geologic map data for the United States in a uniform manner. Geologic data in this series has been compiled from a wide variety of sources, published and unpublished, ranging from state and regional geologic maps to field mapping. Preliminary Geologic Map of Southcentral to Southeast AK - ranging from the Cook Inlet region, located at the northern part of the Gulf of Alaska to Prince Rupert and Dixon Entrance quadrangles on the south. This data set is a portion of a statewide geology database, which is being compiled by the U.S. Geological Survey's National Surveys and Analysis (S) project, whose goal is to compile geologic geochemical, geophysical,...
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