Showing 1765 results

Archival description
Kupsch, Walter Oscar Geology√
Print preview View:

20 results with digital objects Show results with digital objects

Barchans, in miniature

Barchans, in miniature showing detail. Sand bank, South Saskatchewan River. Note steep side of dunes, hammer for scale. Photo N. Wardlaw.

Barchans, in miniature

Barchans, in miniature. Sand bank, South Saskatchewan River. Note steep side of dunes, hammer for scale. Photo N. Wardlaw.

Basic unit of silicate structure

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.

Results 136 to 150 of 1765