Annotated record of the detailed examination of Mn deposits from WAHINE Expedition stations

The cores described in this report were taken on the WAHINE Expedition in February to March 1965 by the Scripps Institution of Oceanography from the R/V Spencer F. Baird. A total of 54 cores and dredges were recovered and are available at Scripps for sampling and study.

Annotated record of the detailed examination of Mn deposits from R/V Pola during the first Austrian expedition to the Northern part of the Red Sea (1895-1896)

The paper presents an outline of the first Austrian expedition to the Northern part of the Red Sea with the R/V Pola.

Annotated record of the detailed examination of Mn deposits from R/V Tokaidaigaku Maru II Cruise GDP-11 stations

The eleventh research cruise of Japanese Geodynamics Project in the West Pacific was carried out by the R/V Tokaidaigaku-maru II in August, 1974. During this cruise, in which the authors participated, many traverses of echo sounding and seismic reflection profiling and frequent sampling of bottom sediments were undertaken.

Chemistry of very young basalts from ODP Hole 106-648B

Basalts in Hole 648B, located in the rift valley of the Mid-Atlantic Ridge at 23°N in crust estimated to be less than 100,000 years old, are mainly fresh, but small amounts of secondary phases are found on fracture surfaces and in alteration halos within the rocks. The halos are defined by dark bands 1-4 mm thick that have developed parallel to fracture surfaces or pillow margins and which in some cases have migrated some centimeters into the rock. The dark bands are the principal locus of secondary phases. The secondary phases are olive-green and yellow protoceladonites, of composition and structure intermediate between celadonite and iron-rich saponite, red (Mn-poor) to opaque (Mn-rich) iron oxyhydroxides, mixtures of protoceladonite and iron oxyhydroxide, and rare manganese oxides. These phases occur mainly as linings or fillings of open spaces in the basalt within the dark bands. Sulfides and intersertal glass are the only primary phases that can be seen to have been altered. Where dark bands have migrated into the rock, the rock behind the advancing band is almost devoid of secondary phases, implying redissolution. The potassium and magnesium in the secondary phases could have been supplied from ambient seawater. The aluminum in the protoceladonites must have been derived from local reaction of intergranular glass. The source of iron and silica could have been intergranular glass or low temperature mineralizing solutions of the type responsible for the formation of deposits of manganese oxides and iron oxyhydroxides and silicates on the seafloor.

CaCO3 deposits in the eastern tropical Pacific

We constructed biogenic mass accumulation rate (MAR) time series for eastern Pacific core transects across the equator at ~105° and ~85°W and along the equator from 80° to 140°W. We used empirical orthogonal function (EOF) analysis to extract spatially coherent patterns of CaCO3 deposition for the last 150 kyr. EOF mode 1 (51% variance) is a CaCO3 MAR spike centered in marine oxygen isotope stage 2 (MIS 2) found under the South Equatorial Current. EOF mode 2 (19% of variance) is high north of the equator. EOF mode 3 (9% of variance) is an east-west mode centered along the North Equatorial Counter Current. The MIS 2 CaCO3 spike is the largest event in the eastern Pacific for the last 150 kyr: CaCO3 MARs are 2-3 times higher at 18 ka than elsewhere in the record, including MIS 6. It is caused by high CaCO3 production rather than minimal dissolution. EOF 2, while it resembles deep water flow patterns, nevertheless, shows coherence to Corg deposition and is probably also driven by CaCO3 production.

Geology and ore-deposits of Rossland, B.C. /

Vita.

State taxation of mineral deposits and production /

Mode of access: Internet.

Sea-floor deposits from soundings,

Mode of access: Internet.

List of Quaternary and Tertiary Diatomaceae from deposits of southern Canada /

Mode of access: Internet.

Two papers on the effects of mandatory deposits on beverage containers. Paper 1. Employment effects of the mandatory deposit regulation. Paper 2. Employment effects of a ban on nonreturnable beverage containers in Minnesota

Mode of access: Internet.

Lead and zinc deposits of Northwestern Illinois,

Mode of access: Internet.

Effects of benthic deposits on dissolved oxygen and organic concentrations in a small stream,

Bibliography: leaves 53-54.

Nature and genesis of some storm washover deposits /

"December 1975."

A comprehensive report of exploration by the Bureau of Mines for thorium and radioactive black mineral deposits /

"June 1956."

An investigation of the amount and distribution of uranium in sulfide minerals in vein ore deposits : annual report for July 1, 1955 to March 31, 1956 /

"Contract AT(49-6)-991."