Upcoming Field Trips

Geology of the Upper Arkansas Valley
CSS 2018 Fall Field Trip

September 15-16, 2018

Led by Karl Kellogg, Cal Ruleman, and Scott Minor, USGS

Upper Arkansas Valley Field Trip Announcement and
CSS Upper Arkansas field trip Details, Sept. 15 and 16, 2018

View to the northeast showing Leadville, Colo., from the flank of Mount Elbert and geographic features relative to the Leadville North, Colo. 7.5′ quadrangle.

Spend Two Days examining diverse Geologic features of the beautiful Upper Arkansas Valley:

  • Proterozoic sedimentation, volcanism, and plutonism
  • Laramide Orogeny structural features
  • Northern Rio Grande Rift and Upper Arkansas Valley magmatism, tectonism, and sedimentation
  • Pre-rift intrusive rocks and Oligocene and Eocene volcanic rocks
  • Glacial history and deposits including catastrophic outwash floods
  • Mineral deposits (gold, silver, copper, zinc, lead, fluorspar, and others)
  • Landslide, alluvial, mass-movement, eolian, and wetland deposits

There is something for everyone!

CSS Upper Arkansas field trip Details, Sept. 15 and 16, 2018 describes the geologic features and processes we will examine.

The group will spend one night at a motel in Buena Vista, and travel will be either be rented vans or personal car-pooling.

If you want to go on this trip, please contact Cal Ruleman, cruleman@usgs.gov, so he can register you.

 

Regional geologic structure map of the Upper Arkansas Valley

From Kellogg, K.S., Shroba, R.R., Ruleman, C.A., Bohannon, R.G., McIntosh, W.C., Premo, W.R., Cosca, M.A., Moscati, R.J.,and Brandt, T.R., 2017, Geologic map of the upper Arkansas River valley region, north-central Colorado: U.S. Geological Survey Scientific Investigations Map 3382, pamphlet 70 p., 2 sheets, scale 1:50,000.
Get the full map at https://doi.org/10.3133/sim3382

Upper Arkansas Valley from the South.
View to the North from above Methodist Mountain and the northern Sangre de Christo Mountains/Poncha Block of Minor and others (2018), showing major geographic and geologic features.

If you want to go on this trip, contact Cal Ruleman, cruleman@usgs.gov, so he can register you.


See our Past Field Trips for other places and topics we have explored.