Geology√

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1974 Archival description results for Geology√

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Possible sequence of events for the origin of a caldera

Caldera. Sequence of events proposed by one theory of the origin of a caldera. Top: An eruption begins, with fiery clouds and other dust clouds distributing sme material on slopes and surrounding country. Middle: Eruption ccontinues, with part of the cone blown away, and lava flows joining in draining the magma reservoir. Bottom: Most of the cone collapses into reservoirs; some final activity forms cinder cone in caldera. Leet and Judson, 1958, p. 67.

Post glacial uplift in Scandinavia

Post glacial uplift in Scandinavia. The heavy lines connect points of equal uplift, in metres, of the highest strandline of the sea which flooded the area just after the melting of the glacier (Gilluly et al., 1959, p. 251).

Post-Pleistocene fossil tree trunk

Post-Pleistocene fossil tree trunk, about 10,000 years old. Locality: lsd. 11, sec. 23, T. 15, R. 29, W. 2, 1 1/2 miles NW of Lillestrom, Saskatchewan. Photo taken in front of the Museum of Natural History, Regina.

Results 1426 to 1440 of 1974

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