Rock Springs Uplift

The Rock Springs Uplift is an area of uplifted Cretaceous to Eocene rocks in Wyoming surrounded and once covered by sediments of the Green River Formation which were deposited in the Eocene Lake Gosiute.Surdam, Ronald C. and K. O. Stanley, Lacustrine sedimentation during the culminating phase of Eocene Lake Gosiute, Wyoming (Green River Formation), Geological Society of America Bulletin, 1979, 90, no. 1, pp. 93-110 The Rock Springs Uplift formed in the Late Cretaceous through the Eocene and is related to the Laramide orogeny.Selena Mederos, Basil Tikoff1 and Viki Bankey: Geometry, timing, and continuity of the Rock Springs uplift, Wyoming, and Douglas Creek arch, Colorado, Rocky Mountain Geology, Volume 40, Number 2, p. 167-191, December 2005 [http://rmg.geoscienceworld.org/cgi/content/abstract/40/2/167 Abstract] The structure is a north–south trending anticline[http://www.wsgs.uwyo.edu/research/stratigraphy/RockSpringsUplift/Default.aspx Rock Springs Uplift, Wyoming Geological Survey] with a surface expression of approximately {{convert|56|mi}} by {{convert|28|mi|abbr=on}}.Rock Springs, Wyoming, 1 x 2 minute Topographic Quadrangle, USGS, 1962 The community of Rock Springs is located on the western margin of the uplift.

A recently discovered lithium deposit is estimated at 228,000 tons. Additional deposits in the same formation were extrapolated to be as much as 18 million tons.{{cite web|author=Money Game Contributors |url=http://www.businessinsider.com/new-wyoming-lithium-deposit-could-meet-all-us-demand-2013-4 |title=New Wyoming Lithium Deposit |publisher=Business Insider |date=26 April 2013 |accessdate=1 May 2013}}