August 27, 2004
Second Announcement: State Geological Survey Field Trip

A geology field trip in the Greater Green River Basin is slated for Thursday, September 16 and Friday, September 17, 2004. The public is invited to join geologists and staff of the Wyoming State Geological Survey (WSGS) in examining depositional environments of the Eocene Green River Formation and related rocks in southwestern Wyoming. Leading the trip will be Dr. Ronald C. Surdam, newly appointed interim Wyoming State Geologist and Director of the WSGS. He is a recognized authority on the formation and has published a number of scientific papers on the subject. WSGS personnel will be present to answer other questions about the geology and mineral resources of the area and will discuss selected topics during the trip.

There are no fees for the trip, but the WSGS does ask attendees to register by providing their name, Email address, and phone number. Participants will be responsible for their own lodging, transportation, food and drink, and field equipment. The WSGS will provide a field guide and road log/itinerary and invites attendees to a barbecue Thursday evening.

Attendees should assemble in the parking lot of McDonalds Restaurant in east Rawlins on Thursday morning at 10:00 a.m. sharp and be prepared for a full day in the field. Moderate hiking and climbing will be required to examine critical outcrops and exposures. Participants should share transportation where possible and use reliable field vehicles that can travel on unpaved gravel and dirt roads. Because of the remote locations visited, there will be no restroom facilities or other services available most of the day.

The first day of the field trip will end in the Rock Springs area, so participants should arrange for lodging that evening in Rock Springs. The field trip will continue on Friday morning at 9:00 a.m. sharp. Attendees should assemble in the parking lot of McDonalds Restaurant at 1607 Elk Street (take Elk Street exit north onto U.S. Highway 191). The field trip will end in Rock Springs late Friday afternoon, so attendees may want to make plans for lodging an additional night in Rock Springs.

The Green River Formation is the world standard for lacustrine (lake) depositional systems and contains vast deposits of oil shale, the world's largest trona deposits and mines, natural zeolites, and world class, uniquely preserved fossil resources. The entire Green River depositional system covered parts of a three-state area and contains spectacularly exposed and accessible outcrops of lacustrine, marginal lacustrine, and alluvial rocks.

Press Release
from the Office of the Wyoming State Geologist
Ron Surdam, State Geologist