IDS Photos

The list below contains photographs of planned stops on the Spring, 1998, Cordilleran Section GSA Field trip, as well as other photos from along the swarm, including many from the eastern Sierra. Photos are linked to the Field Trip Guidebook where appropriate. The Galleries provide an excellent way to overview the photos.

Scenic Photo Gallery: Thumbnails of Scenic Photos 1-12

Scenic Photo 1: Aerial view of Mt. Pinchot, eastern Sierra Nevada.
Scenic Photo 2: Aerial view of Woods Lake basin
Scenic Photo 3: Sawmill Pass
Scenic Photo 4: Woods Lake, July 19, 1994
Scenic Photo 5: Woods Lake, July 19, 1995
Scenic Photo 6: Sawmill Lake after 7 days of hiking
Scenic Photo 7: On top of Mt. Gould, near Kearsarge Pass
Scenic Photo 8: Looking east toward Baxter Pass
Scenic Photo 9: Looking west toward east Sierran rangefront
Scenic Photo 10: STOP 8, The real "stars" of 1990 film Tremors
Scenic Photo 11: Onion Valley mafic complex

Dike Features Gallery 1: Thumbnails of Photos 1-12 below
Dike Features Gallery 2: " 13-24
Dike Features Gallery 3: " 25-36

Spring, 1998, GSA Cordilleran Section Field Trip Stops:
Photo 1: STOP 2, Spangler Hills
Photo 2: STOP 4, Aberdeen mafic sill complex
Photo 3: STOP 5, Foliation in felsic dike cutting Santa Rita Flat pluton
Photo 4: STOP 6, Outcrop at Onion Valley roadcut
Photo 5: STOP 7, Alabama Hills

Woods Lake, Mt. Pinchot 15' quadrangle,Eastern Sierra
Deformed Dikes
Photo 6: Highly sinistral fabric across a mafic dike, Woods Lake.
Photo 7: Folded mafic dike within deformed rhyolite dike, Woods Lake.
Photo 8: Rhyolite dike containing sinistral fabric, Woods Lake
Photo 9: Deformed epidote vein in mafic dike near Taboose Pass.
Photo 10: "Syn-deformational" mafic dike.
Photo 11: Boudinage of dike along mylonite zone
Photo 12: Mylonite zone active during dike intrusion?
Oblique Opening
Photo 13: Felsic segregations in mafic dike.
Photo 14: Highly oblique opening across mafic dike.
Photo 15: Conjugate dikes opened in north-south direction
Photo 16: Mafic dike opened in a north-south direction.
Photo 17: Mafic dike with a complex opening history.
Photo 18: Oblique feldspar segregations in mafic dike, WL
Photo 19: Oblique opening or sinistral deformation?
Dike Propogation features
Photo 20: Left-step en echelon #1.
Photo 21: Left-step en echelon #2
Photo 22: Right-step en echelon
Photo 23: Dike "tip"and process zone?
Photo 24: Dike margin "bud"
Photo 25: Dike margin "bud" with flow foliation
Photo 26: Intrusion along conjugate fractures?
Photo 27: Uneven dike margin
Other Interesting Dike features
Photo 28: Magmatic layering in Cretaceous mafic dike.
Photo 29: Margin of (Cretaceous?) mafic dike, Woods Lake.
Photo 30: Epidote nodule in mafic dike

Composite Dikes
Photo 31: Mafic composite dike, Twin Lakes.
Photo 32: Enclaves in composite dike, Woods Lake.
Photo 33: Composite dike containing abundant enclaves., Spangler Hills.
Photo 34: composite dike (co planar intrusions) in Spangler Hills

Others
Photo 35: quartz fingers along dike margin in Spangler Hills