Map data collected with A. Ficklin and P. Traffas

The maps here are more recent scans of 1993 color photocopies of the the final maps, as final and field maps were not returned to students.

True story: In 1993 at the 13th and Willamette FedEx formerly known as Kinko's, color photocopies were $7 a sheet - enough for a half rack of the good stuff in that era.

Yellow   - alluvium, talus, slumps

Orange   - welded lapilli ash flow tuff - Oligocene-Miocene John Day Formation, basal unit - one tiny downfaulted sliver on ridgetop east of the river, NE corner of map sheet 1a. We suspect the map border was drawn as a test to check if we would find it

Red      - dacitic intrusives - locally intruding Clarno Formation and Baker Terrane metasediments

Purple   - paleosol - Eocene-Oligocene Clarno Formation

Lt. Blue - partially welded lithic tuff, buff colored - Eocene-Oligocene Clarno Formation

Brown    - debris flows - Eocene-Oligocene Clarno Formation

Gray     - volcanic units, mostly hornblende porphyritic andesite - Eocene-Oligocene Clarno Formation. Unfamiliar with concept of hydrothermal alteration, we attempted to map altered zones as separate units

Green    - mudstones and sandstones, semischistose and weakly foliated - "Muddy Ranch Phyllite" Baker Terrane Paleozoic to Mesozoic metasediments