Gypsum, var. Selenite, South Dakota. A "Fish-tail" twin
- WOK 18-146
- Item
- [1964]
Parte deW.O. Kupsch fonds
Gypsum, var. Selenite, South Dakota. A "Fish-tail" twin.
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Gypsum, var. Selenite, South Dakota. A "Fish-tail" twin
Parte deW.O. Kupsch fonds
Gypsum, var. Selenite, South Dakota. A "Fish-tail" twin.
Fluorite, Westmoreland, New Hampshire. An excellent example of the octahedral cleavage fluorite
Parte deW.O. Kupsch fonds
Fluorite, Westmoreland, New Hampshire. An excellent example of the octahedral cleavage fluorite.
Basic unit of silicate structure
Parte deW.O. Kupsch fonds
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.
Chain structures for amphiboles and pyroxenes
Parte deW.O. Kupsch fonds
Chain structures for amphiboles and pyroxenes (left). Silicon-oxygen tetrahedra form simple or double chains in the inosilicates by sharing oxygen atoms with neighbouring tetrahedra.
Parte deW.O. Kupsch fonds
Muscovite. Oxygen: white. Silicon: small metallic spheres in centre of white tetrahedral oxygen groups, only one or two visible. Aluminum: larger metallic spheres. Potassium: purple OH groups, or hydroxyl: blue. A phyllosilicate.
Fault scarp cutting throuh school, Anchorage
Parte deW.O. Kupsch fonds
Fault scarp cutting throuh school, Anchorage.
Open crack, minor scarps, Anchorage
Parte deW.O. Kupsch fonds
Open crack, minor scarps, Anchorage.
Rockfall and differential weathering
Parte deW.O. Kupsch fonds
Rockfall and differential weathering (Eckel, 1958, p. 22).
Parte deW.O. Kupsch fonds
Four varieties of slumping (Eckel, 1958, p. 25).
Crack pattern of slump slide in cohesive material
Parte deW.O. Kupsch fonds
Crack pattern of slump slide in cohesive material (Eckel, 1958, p. 55).
Air photo of landslide near Hope, B.C.
Parte deW.O. Kupsch fonds
Landslide near Hope, B.C., covering Hope-Princeton highway. January 1965
Conceptual scheme for the evolution of landscape in a humid temperature climate
Parte deW.O. Kupsch fonds
Conceptual scheme for the evolution of landscape in a humid temperature climate. The transition from, late youth ti early maturity is marked by the disappearance of remnants of the initial surface and by smoothing (grading) of valley side-slopes. In early maturity, most of the landscape is occupied by valley side-slope; in late maturity, by the valley flats of streams. The dashed line on each block represents sea level.
Buckling associated with strike-slip faulting
Parte deW.O. Kupsch fonds
Buckling associated with strike-slip faulting. Billings, 1960, p. 393.
Map of southeastern Pennsylvania and eastern Maryland showing sedimentary rocks of Newark group
Parte deW.O. Kupsch fonds
Map of southeastern Pennsylvania and eastern Maryland showing sedimentary rocks of Newark group, and dikes and sills of diabase which intrude both the Newark group and the earlier crystalline and sedimentary rocks of surrounding areas. King 1959, p. 51.