The Acropolitan - v. 2, no. 7

In this issue...Big Butte, "M" Days, Hotel Finlen, Congo region, Butte Business College, Miles City, Butte, Montana, Dr. Hult, commencement, Oratorical Contest

The Amplifier - v. 2, no. 7

In this issue...YMCA, Gardner Denver Scholarship, Civic Center, Butte, Montana, Air Force, Russell Dugdale, Debate team, Anderson Carlisle Society, Student Wives

Basalt density, basement age, and intrusive/extrusive relations from DSDP Legs 2 through 7, 9, and 14

Densities of layer 2 basalt recovered during the Deep Sea Drilling Project have been found to decrease steadily with age, a finding ascribed to progressive submarine weathering in the context of sea-floor spreading. The least-squares solution for 52 density measurements gives a rate of decrease in density of (Delta p)/(Delta t) = -0.0046 g per ccm m.y. = -16 percent per 100 m.y., which is in excellent agreement with earlier estimates based on observed chemical depletion rates of dredged oceanic basalt. Weathering of sea-floor basalt, should it penetrate to any considerable depth in layer 2, will decrease layer 2 seismic refraction velocities, act as a source of geothermal heat, and substantially influence the chemistry of sea water and the overlying column of sediment.

El Mole: Número 2 - Día 7 de noviembre de 1840

Microfilme. Valencia: BV, ca. 1990