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Big Bend National Park
Structural Geology, 14-17 October 2004 |
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| Flat-irons of the Devonian Caballos novaculite along the southeastern margin of a breached anticline, East Bourland Mountain, Marathon fold and thrust belt. | ||||||||||||||
| Plunging folds defined by the Caballos novaculite along highway 385 in the Marathon fold and thrust belt. | ||||||||||||||
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Structural geology students examining outcrop-scale folds in the Marathon fold and thrust belt.
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Heading to the Canoe syncline in a field of yellow flowers.
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| Sketching folds and thrust faults associated with the Laramide orgeny at Persimmon Gap. | ||||||||||||||
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Normal faults and drag folds associated with Basin and Range normal faulting in Tornillo wash.
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| Rusty-weathering igneous body intruding parallel (sill) to host rock bedding (lower right, center) and sub-perpendicular to bedding (center, top). Note the apparent offset of the dike near the top of the cliff. | ||||||||||||||
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Lunch break in the core of the Canoe syncline.
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| Pictures by Graham Butler | ||||||||||||||