Geology√

Left: SiO sub 4 tetrahedra. Basic unit of all silicate structure. Right: Si sub 2 O sub 7 (double Tetrahedral group). In silicate structures the silicon atoms group in fourfold symmetry with oxygen. The basic unit of all silicate structure is the tetrahedron. The sorosilicates possess double tetrehedral groups.

Basic intrusive related to Bearpaw Mountains, Montana

WOK 1-85
Item
1953

Part of W.O. Kupsch fonds

Basic intrusive related to Bearpaw Mountains. Three Buttes along highway Harlem-Hays, Montana

Base of marine cliff at Stevns Klint, Island of Sjaelland, Denmark

WOK 11-120
Item
1960

Part of W.O. Kupsch fonds

Base of marine cliff at Stevns Klint, Island of Sjaelland, Denmark. Monday, August 22, 1960.

Base of a statue of Pizzaro, Plaza de Armas, Lima

WOK 7-71
Item
1958

Part of W.O. Kupsch fonds

Base of the statue of Pizzaro, (Plaza de Armas, Lima) showing granodiorite with xenoliths.

Base camp on sand bar, Ucayali River

WOK 6-150
Item
1958

Part of W.O. Kupsch fonds

Base camp on sand bar, Ucayali River, near Cumaria. Bernie Felber in tent, Jorge Portugal at right, standing.

Base camp on sand bar, Ucayali River

WOK 7-1
Item
1958

Part of W.O. Kupsch fonds

Base camp on sand bar, Ucayali River, near Cumaria. Allan Craig showing shotgun to worker.

Basalt stills in horizontal sedimentary rock

WOK 2-44
Item
1956

Part of W.O. Kupsch fonds

Basalt stills in horizontal sedimentary rocks. Columnar jointing is conspicuous. Yellowstone River beyond Town Creek bridge, Yellowstone National Park. See Leet and Judson, 1958, p. 70.

Basalt stills in horizontal sedimentary rock

WOK 2-43
Item
1956

Part of W.O. Kupsch fonds

Basalt stills in horizontal sedimentary rocks. Columnar jointing is conspicuous. Yellowstone River beyond Town Creek bridge, Yellowstone National Park. See Leet and Judson, 1958, p. 70.

Basalt dike through Lower Cretaceous sands - south of Callao

WOK 6-108
Item
1958

Part of W.O. Kupsch fonds

Basalt dike cutting veertically through Lower Cretaceous sands at Herradura, south of Callao.

Basalt columns against the sky at Dverghammar

WOK 11-90
Item
1960

Part of W.O. Kupsch fonds

Basalt columns against the sky at Dverghammar (Dwarfs' Walls). August 10, 1960.

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