rwgabbro1: Geology of Fieldstone & Cobblestone Buildings, Part 20: Another Overall View of the Herrick House, Rockford, Illinois, USA (1847)
rwgabbro1: The Geology of Terra-Cotta, Part 15: Putting One's Best Face Forward, the Ansorge Fish Market Building, Kenosha, Wisconsin, USA (ca. 1922)
rwgabbro1: The Bounty of Bell Smith Springs, Part 10: Room with a View, Shawnee National Forest, Illinois, USA
rwgabbro1: Architectural Geology of Southwestern Wisconsin, Part 15: Zooming in on the Soldiers' and Sailors' Civil War Monument, Monroe, Wisconsin, USA (1913)
Bernard Spragg: PAPAROA NATIONAL PARK. Punakaiki .
rwgabbro1: Celebrating the Cream City's Urban Geology: Milwaukee in Stone and Clay (2024)
rwgabbro1: Architectural Geology of Paestum, Part 4: Taking the Long View, Magna Graecia, Campania, Italy
rwgabbro1: The Brownstone Chronicles, Part 24: Close-Up of the Central Façade, Old City Hall, Marquette, Upper Peninsula of Michigan, USA (1894)
murielrocher: La caldeira du Monte Corona, Lanzarote (Canaries)
Vid Pogacnik: Rocca Malatina
Vid Pogacnik: A volcano in the Nirano natural park
rwgabbro1: From Persimmon Gap to Boquillas Canyon, Part 13: Oh, What a Beautiful Faulting; Big Bend National Park, Texas, USA
rwgabbro1: Architectural Geology of Dougga, Tunisia, Part 5: Another View of the Mausoleum of Ateban (2nd century BC) and the Diapir Zone
rwgabbro1: Architectural Geology of Byzantine Athens, Part 11: St. Catherine Church (late 11th to early 12th century AD; rebuilt in 1927)
murielrocher: Parque Nacional de TimanfayaLanzarote (Canaries)
murielrocher: Monte Corona, Lanzarote (Canaries)
ChPflügl: IMG_2652
ChPflügl: IMG_2620
rwgabbro1: Graveyard Geology of Chicago, Part 18: Close-up of the Plinth of the William M. Hoyt Monument, Graceland Cemetery, Uptown Neighborhood (1883)
Lilian Alizert: Grenats, Omphacite, Amphiboles
rwgabbro1: In and About Tuff Canyon, Part 10: One Last View from the Rim, Big Bend National Park, Texas, USA
rwgabbro1: Geobrickology, Part 15: Chicago Common in All Its Grubby Glory, 235 W. Eugenie Street, Old Town Neighborhood, Chicago, Illinois, USA (1962)
rwgabbro1: Architectural Geology of Segovia, Spain, Part 26: Santissima Trinidad Church (12th Century AD)
Lilian Alizert: Or de la Thy
rwgabbro1: Geology of Fieldstone & Cobblestone Buildings, Part 19: The Herrick House, Rockford, Illinois, USA (1847)
rwgabbro1: The Geology of Terra-Cotta, Part 14: The Ansorge Fish Market Building, Kenosha, Wisconsin, USA (ca. 1922)
rwgabbro1: The Bounty of Bell Smith Springs, Part 9: Rock Shelters in the Canyon Wall, Shawnee National Forest, Illinois, USA