Publications

During the last five years ground‐water has been more and more extensively used for air‐conditioning on Long Island, New York. The wide‐spread occurrence of highly permeable water‐bearing material and the relatively small cost of installation and operation of a ground‐water, air‐conditioning system has resulted in many such installations by theaters, restaurants, stores, and other establishments.

Prospecting in the Glacier Bay National Monument has been confined so far to granitic rocks near contacts with Paleozoic sediments, which they intrude.Near Reid Glacier thin veins, a few of which are traceable for about 300 feet both horizontaliy and vertically, trend northerly and carry sphalerite, galena, and pyrite. Gold was panned from some of the better looking material.Near Sandy Cove, 30 mi

No abstract available.

No abstract available.

In this informal paper the processes of snow‐wastage at high altitudes were discussed and a number of slides illustrating suncups and sunpits in different stages of development were shown. It was stressed that these features are peculiar to the region above the timber‐line, which biologists term the Alpine, or Arctic‐Alpine, Zone. That regions is, as a matter of fact, primarily and fundamentally a

More than 15,000 tons of manganese ore has been produced from small deposits in the Drum Mountains in west-central Utah. Lenses of rhodochrosite, now largely weathered near the surface to manganese oxides, lie parallel to the bedding of Cambrian dolomites and shales near faults that are nearly normal to bedding. Two varieties of rhodochrosite, one fine-grained, dark-gray or black, and massive, the

No abstract available.

A summary of the geology of the Bull Valley district, southwestern Utah, and a description of the occurrence of the magnetite and hematite deposits is given, as well as brief descriptions of the ore pits at Iron Mountain and Desert Mound 20 miles to the northeast, in which deposits formed under similar geologic conditions have been developed. Neither the ores nor the country rock show the features

The description, location, log and meter tests of all the drilled wells on Oahu are given herein as of March 1 1938. Except for the discharges of plantation wells, which are published on pages 275 to 322 of Bulletin 1, head, chloride, and discharge records are listed only to the close of 1934, the date when this report was compiled. All head measurements and salt determinations made by the U.S. Ge

No abstract available.

No abstract available.

The Little Hatchet Mountains contain two mining districts, the Eureka silver-lead-zinc district and the Sylvanite gold district, the deposits of each being associated with a mass of monzonite that intrudes Lower Cretaceous sediments. The same formations crop out in both districts, having been duplicated by a large post-ore fault, and the two monzonite masses and their accompanying mineralized zone