Chemical and mineral compositions of cherty and siliceous-clayey rocks from accretionary complexes in Sikhote Alin

The paper reports results of a study of clastic heavy mineral assemblages and geochemical features of some assemblages in several Permian-Mesozoic cherty and siliceous-clayey sequences of the Sikhote Alin Region. They are composed of pelagic and hemipelagic sediments of the Panthalassa (Paleopacific) Ocean. Four typical mineral assemblages and their environments are established. In one of the ocean segments, where the sedimentary cover formed during Late Paleozoic - Early Cretaceous, the Permian pelagic domain was characterized by the amphibole-pyroxene assemblage with heavy minerals derived from ophiolites. The Triassic-Jurassic stage was marked by development of the clinopyroxene assemblage with heavy minerals derived from intraplate alkaline volcanic complexes. Middle-Late Jurassic hemipelagic sediments host the zircon-clinopyroxene assemblage with greater role of continental environments and presence of volcanic products of the convergence zone. Another segment of the ocean accumulated red cherts and siliceous-clayey sediments during Jurassic - Early Cretaceous under influence of island-arc volcanism.

National survey of speeding and other unsafe driving actions. Volume I: methodology.

National Highway Traffic Safety Administration, Office of Research and Traffic Records, Washington, D.C.

An investigation of used car safety: final report. Volume I-summary and program plan.

Mode of access: Internet.

Still Life with a Silver Jug and a Porcelain Bowl

Willem Kalf; 2 ft. 5 1/16 in.x 2 ft. 3 3/64 in.; oil on canvas

Exploration diamond drilling in the Boulder batholith, Jefferson and Silver Bow Counties, Montana /

Radiometric logging of the drill holes was accomplished by means of a Geiger counter-type probe. Samples for chemical assay were selected after checking the core with a Geiger counter and correlation with the radiometric logging record. The exploration project did not disclose significant amounts of ore-grade material although encouraging indications were found at two different properties.

Chisat I, extension and validation of NOAA's REPEX procedures for habitat diving : a Chinese-American collaboration /

"October 1990."

Living on other people's means; or, The history of Simon Silver.

Attributed to Hannah Farnham Sawyer Lee.

Contributions to economic geology (short papers and preliminary reports), 1931-32 : Part I. - Metals and nonmetals except fuels /

Mode of access: Internet.

Robert Webster, UM Men's Swimming and Diving, and Gary Tobian (USC) ,gold and silver medalists in 1960 Olympic platform diving

[Webster on the right}