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Determination of the 14-Mev Li7 (n,n'a)T Cross Section from Sphere Multiplication and Transmission Measurements
By utilizing lithium spherical shell transmission and multiplication measurements, the Li7(n,n'y)Li7 and the He6-production cross sections, it is possible to deduce that the 14-Mev Li (n,n'a)T cross section is 325 ± 75 mb. A spectrum for neutrons degraded in energy between 0 and 12 Mev is also given.
On Secondary Enlargements of Mineral Fragments in Certain Rocks
A report about quartz fragments and genesis of qartzites. Sandstones are described that have grains which are bounded externally by crystalline faces. The quartz coatings of these grains are in perfect "optical and crystalline continuity" with the interior fragments.
On the Cambrian Faunas of North America Preliminary Studies
A report about the fauna of the Saint John Formation contained in the Hartt Collection.
A Report of Work Done in the Washington Laboratory During the Fiscal Year 1883-84
A report about the rocks, clays, and other geologic sediments analyzed by the Washington laboratory during 1883 to 1884.
The Lignites of the Great Sioux Reservation : a Report on the Region Between the Grand and Moreau Rivers Dakota
From introductory: Report of the survey party on the Great Sioux Reservation for determining any coal-beds of economic value.
The Gabbros and Associated Hornblende Rocks Occurring in the Neighborhood of Baltimore, Maryland
From introduction: The present paper is intended as a contribution to our knowledge of a particular phase of metamorphism in eruptive rocks, i.e., that one which is dependent on the secondary development of hornblende by the paramorphism or pseudomorphism of pyroxene.
Notes of the Geology of North California
A report about a complex group of mountain ridges in Northern California and Oregon. It discusses the geology of North California.
On the Relation of the Laramie Molluscan Fauna to That of the Succeeding Fresh-Water Eocene and Other Groups
A report about strata found in Utah and Wyoming which contains fresh water types of fossil molluscan forms which share some characteristics of the Laramie Group.
Physical Properties of the Iron-Carburets: Third Paper
A report about magnetization and homogeneity as it pertains to Iron-Carburets.
Subsidence of Fine Solid Particles in Liquids
A report about the phenomenon of subsidence which is divided into parts.
On the Fossil Faunas of the Upper Devonian: the Genesee Section, New York
From letter of transmittal: The present report includes special discussion of the faunas of the Hamilton group and of those below the black shales of the Genesee group is omitted.
Peridotite of Elliott County, Kentucky
A report about the peridotite found in dikes of an eruptive rock between Isom's and Critche's Creeks in Kentucky.
Tertiary and Cretaceous Strata of the Tuscaloosa, Tombigbee, and Alabama Rivers
From preface: This bulletin is based upon the observations of the Tertiary and Cretaceous strata exposed along the Tuscaloosa, Tombigbee, and Alabama Rivers in the state of Alabama.
Types of the Laramie Flora
From explanatory remarks: I have in preparation a work on the flora of the Laramie group, in which will be described and figured a very large number of fossil plants, most of 'which were collected by myself in the seasons of 1881 and 1883 and the elaboration of which has occupied most of my time since the latter date.
The Upper Beaches and Deltas of the Glacial Lake Agassiz
A report about the exploration of the extinct Lake Agassiz, now a prairie, in Minnesota that was explored in 1879 and 1881.
Analyses of Waters of the Yellowstone National Park With an Account of the Methods of Analyses Employed
A report about 43 different waters made up of geysers, hot springs, mud springs, cold springs, and surface waters found within the limits of Yellowstone Park.
Nature and Origin of Deposits of Phosphate of Lime
A report which provides information about American phosphate of lime deposits.
On the Form and Position of the Sea Level
A report about sea level change and problems and methods pertaining to measuring it.
Formulas and Tables to Facilitate the Construction and Use of Maps
A report about a spheroid which represents the true size and shape of the earth, and it is the one to which nearly all geodetic work in the United States in now referred.
Fossil Wood and Lignite of the Potomac Formation
A report about flood theories, fossil wood, ignite of the potomac formation.
The Geology of Nantucket
Letter of transmittal: I have the honor to transmit herewith a report on the geology of the island of Nantucket. This report embodies a portion of the work which I have done in connection with the general study of the Atlantic coast line. Although part of a much more extended inquiry, it seems well to publish the results contained in this memoir in advance of my general report for the reason that the region constitutes a distinctly bounded field and also because the problems considered in this report have an important bearing on work which is in the bands of other divisions of the Survey.
Latitudes and Longitudes of Certain Points in Missouri, Kansas, and New Mexico
A report about the latitudes and longitudes which were determined by the telegraphic method with respect to the observatory of Washington University.
On Invertebrate Fossils from the Pacific Coast
A report about fossils from the Chico-Téjon series of California. These fossils constitute additions to the already known molluscan fauna of an important series of rich strata.
On the Thermo-Electric Measurement of High Temperatures
From preface: The present publication is the first contribution to a research on the physical constants of rocks; the experiments of which are to follow a general plan devised by Mr. Clarence King, former Director of the U. S. Geological Survey.
Report of Work Done in the Division of Chemistry and Physics
A report about mica which occurs in overlapping, crystalline plates, at Stony Point.
Subaërial Decay of Rocks and Origin of the Red Color of Certain Formations
A report that focuses on the widespread decay of the surface rocks throughout the Appalachian region. It also focuses on the iron-stained sands which result from subaërial decay of crystalline rocks that agree in many ways with iron-stained sands forming certain geologic formations.
Revision of the North American Pocket Mice
From introductory remarks: "Classification study of the North American pocket mouse based on about 170 specimens. Results of study increased recognized species to 18 and subspecies to 3 as well as shifting several well known names to other forms."
Descriptions of Fourteen New Species and One New Genus of North American Mammals
Brief summary of new species identified, including grasshopper mice, marmot, pika, Spermophile, ground squirrel, bat, and Arvicolinæ.
On a Group of Volcanic Rocks from the Tewan Mountains, New Mexico and on the Occurrence of Primary Quartz in Certain Basalts
A report about volcanic rocks from the Tewan Mountains which present a series of transitions from acid rhyolite, through audesite, to quite basic basalt.
The Relations of the Traps of the Newark System in the New Jersey Region
From introduction: This contribution is a summary of the more complete results of a systematic study of the relations of the traps of the Newark system in New Jersey and New York
Results of a Biological Survey of the San Francisco Mountain Region and Desert of the Little Colorado, Arizona
Brief summary of a biological survey of the Painted Desert, specifically the San Francisco Mountain region, and the Grand Canyon (Cañon).
Descriptions of Twenty-six New Species of North American Mammals
Brief description of new species of ground squirrels, Evotomys, Marten, Molossus, prairie dog, kangaroo rats, pocket gopher, and Hesperomys.
Correlation Papers: Cambrian
From outline: This work is a review, by one who is working in the Cambrian field, of the work of his predecessors, and of the results they and he have thus far obtained as he interprets them. It thus becomes historical and descriptive, and is a general statement of the principles upon which the correlations have been made in establishing the group.
Correlation Papers: Cretaceous
From outline: The primary object of this bulletin is the presentation of a summary of our present knowledge of the North American Cretaceons and a discussion of the system as it is developed on this continent, discussion of or direct reference to the details of the system as it is developed in other parts of the world being omitted.
Correlation Papers: Eocene
From outline: This essay comprises, first, a general discussion of the limitations of the term Eocene as employed in American geology. The two-fold character of the Tertiary (1. Eocene, 2. Neocene) in America is insisted on. After a somewhat extended review of the literature, in which the various opinions upon disputed points are especially considered, a general study of the stratigraphical, paleontological, and topographical characteristics of the Eocene in the various portions of the country is undertaken.
A Late Volcanic Eruption in Northern California and its Peculiar Lava
Synopsis: The Lassen Peak, Volcanic Ridge, which connects the northern end of the Sierra Nevada in California with the Coast Range and separates the upper portion of the Sacramento Valley from the great interior basin, is composed chiefly of lavas from many volcanic reuptions.
Record of North American Geology for 1890
A bibliography which includes geologic publications printed in North America and geologic publications about North America for the year 1890.
Stratigraphy of the Bitmuninous Coal Field of Pennsylvania, Ohio and West Virginia
From introduction: This report deals with the Middle and Upper Carboniferous System.
The Viscosity of Solids
Preface: This bulletin is a second contribution to the general investigation of the physical contents of rocks, the experiments concerning which follow a general plan devised by Mr. Clarence King.
Results of a Biological Reconnoissance of South-Central Idaho
Brief summary of south-central Idaho, including descriptions of subregions, mammals, birds, and reptiles.
Bulletin of the United States Geological Survey No. 90
Report describing work done in the division of chemistry and physics during the fiscal year of 1891. It includes summaries with findings for much of the research.
The Compressibility of Liquids
A report about certain researches on the thermodynamics of liquids in progress at the laboratory.
Correlation Papers: Archean and Algonkian
From outline: This hook is a review of the present state of knowledge of the general structure of the pre-Cambrian rocks of the United States and Canada. The material contained in the historical chapters is of two kinds: Summaries of all articles pertaining to the subject considered, and summaries of the conclusions which appear to be established. The first represents the substance of the literature; the second brings together the important ascertained structural facts, and often times becomes a more or less extended discussion. The final chapter covers the same grounds as the historical chapters for the various pre-Cambrian in general successions proposed by different authors, and also contains a discussion of results and the principles upon which they are based. Within the chapters, individual districts or regions are given separate sections, and the summary of literature for each is arranged in chronological order.
Correlation Papers: Neocene
From outline: This paper, after discussing general principles connected with the study and description of the Tertiary or Cenozoic rocks and fossils contained in them, takes up the Neocene deposits of the United States in particular. A chapter is devoted to a summary of what is known in regard to the Neocene of the eastern coast of the United States, each State in geographical order being separately considered, beginning at the north.
Correlation Papers: the Newark System
From outline: The aim of this paper is to review the progress of our knowledge concerning a well defined system of rocks on'the Atlantic border, named the Newark system; to summarize the present state of information concerning it, and to discuss the bearing that its study has on principles of correlation.
Earthquakes in California in 1890 and 1891
A paper which records all of the shocks observed or felt on Mount Hamilton, and all of those reported to the Lick Observatory by letter; as well as newspaper reports of such earthquakes as occurred in the state during that year.
The Mechanism of Solid Viscosity
A report about about the viscosity of solids which have an immediate bearing on the molecular mechanism by which viscous motion in solids is promoted.
Some Insects of Special Interest from Florissant, Colorado and Other Points in the Tertiaries of Colorado and Utah
A report about the characteristics of a few Oligocene insects of different orders which, from some peculiarity, have been thought worthy of special study out of serial course.
The Volume Thermodynamics of Liquids
From preface: In the following chapters, I have commenced a serious study of the volume thermodynamics of liquids and solids. The work is, as yet, confined to volume, pressure, and temperature. Questions involving entropy and energy are also in active progress, but can not be included in the present bulletin.
The Colorado Formation and its Invertebrate Fauna
From preface: The following review of one of the Upper Cretaceous faunas as developed in the interior region of the United States has grown out of the study of a collection of fossils found by me in Huerfano park and adjacent localities in southern Colorado. This collection, the greater part of which was obtained during the summer of 1890, proved to be especially interesting because it afforded data for the closer correlation of certain Cretaceous strata in Utah with those east of the mountains, besides adding a considerable number of new species to the fauna of the Colorado formation. Dr. C. A. White, under whose direction the field work was done, generously assigned these fossils to me for study with a view to publishing the results, and I am greatly indebted to his sympathetic aid in every phase of the work.
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