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John B. Reeside

Publications and source records attributed to John B. Reeside.

13 recordsLinked to original sources
USGS1963

Fossils from lower part of the Mancos Shale, Disappointment Valley, San Miguel County, Colorado

About 400 fossiliferous segments of drill core from the lower part of the Mancos Shale of Late Cretaceous age were collected by the author during an exploratory drilling program for uranium deposits conducted in 1955 and 1956 by the Geological Survey in the Disappointment Valley area, San Miguel County, Colo. "The samples were submitted to the late J. B. Reeside, Jr., of the Geological Survey for identification. Reeside's identifications are being released in open file in order to make them available to those interested.

Colorado↗
USGS1953

Correlation of the Cretaceous formations of Greenland and Alaska

This is Number 10d of a series of correlation charts prepared for the Committee on Stratigraphy of the National Research Council. It has been sponsored by the U.S. Geological Survey and has required about seven months' time of both authors gathering and compiling data and evaluating fossil evidence. As the two regions dealt with in the chart are widely separated, the lists of references are also given separately. The annotations dealing with Greenland are based entirely on published information. The annotations dealing with Alaska are based on a re-examination of nearly all the Cretaceous fossils from Alaska are based on a re-examination of nearly all the Cretaceous fossils from Alaska in the collections of the Geological Survey. This has resulted in many concepts not hitherto published and in some concepts that are completely at variance with those that have been published. Naturally for large areas undergoing active exploration, such as Alaska, a correlation chart is out of date in many particulars as soon as published. Nevertheless it is valuable to the field man whose activities are confined to small areas but who must interpret much of his data in terms of surrounding areas that he has not seen. It is valuable to the student and to the general geologist because it organizes scattered information in a manner that can be applied in their field problems, makes quite unnecessary the memorization of stratigraphic correlations are based on observation and reasoning and not on a vast memory. It is probably of greatest value to the specialist who makes the chart because he discovers what areas and problems are most in need of research and can thereby direct his efforts and those of his associates in a manner that will yield the greatest results.

Alaska↗
USGS1927

A comparison of the genera Metaplacenticeras Spath and Placenticeras Meek

In a recent examination of a considerable suite of specimens from the Western Interior of the United States belonging to the Cretaceous ammonite genus Placenticeras Meek the writer made comparisons of the species from the Interior with those from the Cretaceous of the Pacific coast ordinarily designated Placenticeras pacificum J. P. Smith, P. calijornicum Anderson, and P. sanctaemonicae Waring. The two groups of species differ widely in their characteristics, though each is a fairly homogeneous assemblage in itself. It was the writer's intention to propose a new name for the group of P. pacijicum - indeed, one was proposed and in type, when the publication by Spathof the name Metaplacenticeras met the need adequately, and that name is of course used here. Spath's name is based on the citation of Smith's original figure and a notation that Metaplacenticeras differs from Placenticeras in its falcoid ribbing and distinct suture line. Inasmuch as there has been some divergence of opinion as to the scope and probable derivation of the genus Placenticeras, based on the study by different writers of members of one or the other of the two groups, the writer has thought it worth while to record his observations and deductions and to give a fuller account of the new genus.

Professional Paper↗
USGS1925

A new fauna from the Colorado group of southern Montana

This paper describes a small but interesting fauna collected in 1921 by W. T. Thorn, Jr., Gail F. Moulton, T. W. Stanton, and K. C. Heald in the Crow Indian Reservation in southern Montana. The locality is in sec. 36, T. 6 S., R. 32 E., Big Horn County, and is 2 miles east of the Soap Creek oil field.

Montana↗
USGS1923

The fauna of the so-called Dakota formation of northern central Colorado and its equivalent in southeastern Wyoming

This paper describes a small fauna from beds in northern central Colorado that have long been designated the Dakota formation, often with doubt that all the beds so named were really equivalent to the typical Dakota sandstone of eastern Nebraska. The upper part of the equivalent beds in southeastern Wyoming was referred by some writers to the Benton Shale and the lower part of the Cloverly formation. This so-called Dakota formation of northern central Colorado and its equivalent in southeastern Wyoming consist of cherty conglomerate, brown quartzose sandstone, and dark shale. The conglomerate is usually at the base of the series and at many localities is overlain by a single shale unit and that in turn by a sandstone. At other localities, however, there are several alternations of sandstone and shale above the basal conglomeratic layer. The fossil described in this paper, except one specimen, were obtained from the shales of the middle part of the formation. The single specimen, an ammonite, came from the uppermost sandstone.

Colorado;Wyoming↗
USGS1919

Some American Jurassic ammonites of the genera Quenstedticeras, Cardioceras, and Amoeboceras, family Cardioceratida

The species cordiforme Meek and Hayden, distans Whitfield, canadense Whiteaves, and dubium Hyatt (probably including whitneyi J. P. Smith), variously assigned to the genera Amaltheus, Quenstediceras, Amoeboceras, and Cardioceras, and subtumidum Whitfield and Hovey, assigned to Aegoceras, include all the previously described species of Jurassic ammonites that are considered in this paper. Material accumulated in the National Museum at Washington, mainly through the efforts of field parties of the United States Geological Survey, has shown, however, the presence of a number of undescribed forms of considerable scientific interest. These new species were obtained mainly from the Sundance formation of Wyoming. One comes from the Ellis formation of Montana, one from Jurassic beds near Lillooet, British Columbia, and three from the Cardioceras-bearing beds near the base of the Naknek formation of Alaska.

Wyoming↗
USGS1917

The Helderberg limestone of central Pennsylvania

This paper presents the results of a study made during 1913, 1914, and 1915, while the writer was a student at Johns Hopkins University. The formations discussed have been studies in Maryland, New Jersey, and New York, and described with more or less detail, but concerning their occurrence in the intervening area in Pennsylvania little exact information has been available. The conflict in opinion as to the proper position and correlation of the Keyser limestone and as to the interpretation of some of the standard New York sections has made further data very desirable, and the present paper is an attempt to meet a part of the deficiency.

Pennsylvania↗