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Homage to the Basin and Range Province, Part 3: The Santana Bolson, Big Bend Ranch State Park, Texas, Mexico-USA Border
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Exploring the Magic Circle, Part 4: Asymmetrical and Overturned Folds in the Caballos Novaculite and Adjacent Formations, Interior of the Solitario, Big Bend Ranch State Park, Texas, USA
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In and About Tuff Canyon, Part 5: My Favorite Moonscape | Big Bend National Park, Texas, USA
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From Persimmon Gap to Boquillas Canyon, Part 14: Structural Geology Illustrated, in Boquillas Canyon, Big Bend National Park, USA, and Mexico
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Gateway to an Ancient Reef, Part 1: El Capitan and the Approach to Guadalupe Mountains National Park, Texas, USA
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Heart of Darkness: Spanish Dagger Tree (Yucca faxoniana), along US Route 62 a Few Miles East of El Paso, Texas, USA
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My Favorite Hoodoo: Erosional Residual in Chisos Formation Tuff, Big Bend Ranch State Park, Texas, USA
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Texas Madrone Tree (Arbutus xalapensis) in McKittrick Canyon, Guadalupe Mountains National Park, Texas, USA
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Homage to the Basin & Range Province, Part 5: Halophytes and Ripples in the Gypsum Sand: Salt Basin, Hudspeth Country, Texas, USA
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Ramparts of a Volcanic Past, Part 1: Cerro Castellan, Big Bend National Park, Texas, USA
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In and About Tuff Canyon, Part 1: Normal Fault in Pyroclastic Deposits, Big Bend National Park, Texas, USA
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Another Look at the Permian Reef Complex, Guadalupe Mountains National Park, Texas, USA
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Exploring the Magic Circle, Part 1: The Western Flank of the Solitario Uplift, Big Bend Ranch State Park, Texas, USA
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Exploring the Magic Circle, Part 2: Detail of the Western Flank of the Solitario Uplift, Big Bend Ranch State Park, Texas, USA
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Exploring the Magic Circle, Part 3: Asymmetrical and Overturned Folds in the Caballos Novaculite and Adjacent Formations, Interior of the Solitario, Big Bend Ranch State Park, Texas, USA
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In and About Tuff Canyon, Part 2: Basal Pillow Basalt and Breccia, Big Bend National Park, Texas, USA
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Exploring the Magic Circle, Part 5: Beds of the Upper Ordovician Maravillas Chert Formation, Interior of the Solitario, Big Bend Ranch State Park, Texas, USA
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A No-Nonsense, Law-and-Order Approach to Natural History: Chihuahuan-Community Plants and Desert Pavement, Stillwell Ranch, Brewster County, Texas, USA
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In and About Tuff Canyon, Part 3: A Ballistic Block and Other Mafic Fragments in Pyroclastic Deposits, Big Bend National Park, Texas, USA
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Exploring the Magic Circle, Part 6: Closeup of the Upper Ordovician Maravillas Chert Formation, Interior of the Solitario, Big Bend Ranch State Park, Texas, USA
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In and About Tuff Canyon, Part 4: Taking a Far View, Big Bend National Park, Texas, USA
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Exploring the Magic Circle, Part 7: Outcrop of the Mississippian-Pennsylvanian Tesnus Formation, Interior of the Solitario, Big Bend Ranch State Park, Texas, USA
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Exploring the Magic Circle, Part 8: A Mystery Outcrop in the Interior of the Solitario, Big Bend Ranch State Park, Texas, USA
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Exploring the Magic Circle, Part 9: What Passes for an Interstate in the Interior of the Solitario, Big Bend Ranch State Park, Texas, USA
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Exploring the Magic Circle, Part 10: Making the Scene at Tres Papalotes, the Interior of the Solitario, Big Bend Ranch State Park, Texas, USA
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Exploring the Magic Circle, Part 11: Landscape near the Start of the Righthand Shutup Road, Interior of the Solitario, Big Bend Ranch State Park, Texas, USA
