Photo of Lake Manix Basin

Quaternary Stratigraphy, Drainage-Basin Development, and
Geomorphology of the Lake Manix Basin, Mojave Desert

October 4-7, 2007

Principal trip leaders: Marith Reheis, Dave Miller, Joanna Redwine, Stephanie Dudash

LATEST UPDATES (September 27, 2007):

The guidebook is now available online, at Remember, you need to print your own copy for the field trip!

Pre-registration closed on Thursday afternoon, Sept. 27. Those of you who registered later than Sept. 12 may not get a T-shirt, or at least not in the size you wanted. If there is enough demand, we will probably order more; details will be available at registration on-site.

The proposed add-on trip to southern Death Valley on October 8 has been postponed, possibly to winter break this year. Contact John Caskey ( if you are interested.

Information will be distributed on this website; announcements regarding updates to the website will be made using the Pacific Cell Yahoo! group; if you want to receive update announcements make sure you are registered by sending your email address to Send questions to or The guidebook will also be posted for download on this website before the field trip. For advance reading, check the attached references.

Photo of lakebeds and fluvial incision from the south rim of Afton Canyon
View upstream of lakebeds and fluvial incision from the south rim of Afton Canyon


October 4 (Thursday)-- Optional pre-day trip: Early downcutting of Lake Manix threshold, and initial flooding of Afton subbasin
Participants MUST be energetic and physically fit for a demanding hike, and 4WD carpooling is absolutely required.

October 5 (Friday)-- Afton Subbasin of Lake Manix and the history of Afton Canyon:

October 6 (Saturday)-- Manix subbasin of Lake Manix and tectonic disruptions

October 7 (Sunday)-- Coyote Lake subbasin of Lake Manix: post-Lake Manix history

END OF OFFICIAL FIELD TRIP in early afternoon on Sunday

Possible post-field trip excursions for FOP diehards:

October 7 (Sunday, late afternoon)-- Lake Mojave shoreline fluctuations: Comparison of multiple dating techniques, led by Lewis Owen (University of Cincinnati)

October 8 (Monday, all day)-- Lake Manly (Death Valley) in southern Death Valley: Lake fluctuations and tectonics, led by John Caskey (San Francisco State University)

USAGov: Government Made Easy U.S. Department of the Interior, U.S. Geological Survey
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