978 Works

Geologic map of the Ojo Caliente District: Supplement 1 from "Petrology of the Hopewell Series in the Ojo Caliente of New Mexico" (Thesis)

Eugene Merle Shoemaker
The Hopewell series is a group of pre-Cambrian metamorphic rocks exposed in the Picuris, Petaca, and Ojo Caliente districts of northern New Mexico. In the Ojo Caliente district these and other pre-Cambrian rocks are exposed in an elongate inlier in the surrounding Tertiary strata. This inlier represents a low mountain or monadnock on an early Tertiary erosion surface. The Hopewell series has been divided into two phases, the Picuris basalt and a series of metasedimentary...

caltechlibrary/ames: Initial citation alerter

Thomas E. Morrell
First version of ames which uses Crossref Event Data to link Datacite DOIs to Crossref citations. Updates CaltechDATA and sends an email alert.

Chart III – Record of ground motion at 3284 meters: Supplement 3 from "Ground vibrations near explosions" (Thesis)

Benjamin F. Howell
Records are shown of the three components of ground vibration taken at distances out to 3284 meters following small explosions of dynamite about ten meters underground. The apparatus used to record this motion is described, and its limitations discussed. The refracted compressional waves recorded are used to calculate roughly the thickness of the near surface layers. Three principal dispersed waves are recognized and described. It is shown that two of these do not behave like...

caltechlibrary/caltechdata_api: Metadata handling and error improvements

Thomas E. (Tom) Morrell
Modifications to improve metadata handling and error reporting.

Data Sheet 7: Supplement 8 from "Stratigraphic studies in the snow and firn of the Greenland ice sheet" (Thesis)

Carl S. Benson
NOTE: Text or symbols not renderable in plain ASCII are indicated by [...]. Abstract is included in .pdf document. The Greenland ice sheet is treated as a monomineralic rock formation, primarily metamorphic, but with a sedimentary veneer of snow and firn. This sedimentary member is perennial above the firn line, and the classical methods of stratigraphy and sedimentation can be profitably applied to it. During a 4-year period 146 pit studies and 288 supplementary Rammsonde...

Cretaceous and Eocene Geology of a portion of the Santa Monica Mountains (map): Supplement 2 from "Stratigraphy of the Cretaceous and Eocene rocks of the Santa Monica Mountains. Geochemical studies of the epithermal deposits at Goldfield, Nevada [Minor Thesis]" (Thesis)

Harry David Bruce Wilson
Stratigraphy of the Cretaceous and Eocene rocks of the Santa Monica Mountains: The problem consisted of separating the Upper Cretaceous from the Eocene rocks in the eastern part of the Santa Monica mountains; determining the local stratigraphy of the Upper Cretaceous and Martinez; and attempting to correlate the Cretaceous section with other sections in California. Results: (a) The Upper Cretaceous stratigraphy in descending order is as follows: E. Upper arkose and conglomerate, 1500 feet. D....

Structure sections – Part II: Supplement 4 from "Structural geology of the region between Pacoima and Little Tujunga Canyons, San Gabriel Mountains, California" (Thesis)

Benjamin F. Howell
An area of about 25 square miles in the western part of the San Gabriel Mountains was mapped on a scale of 1000 feet to the inch. Special attention was given to the structural geology, particularly the relations between the different systems of faults, of which the San Gabriel fault system and the Sierra Madre fault system are the most important ones. The present distribution and relations of the rocks suggests that the southern block...

Graphical determination of requisite resistance to sliding for cross-section through hillside at station 12+00 along Parker Avenue, Lone Mountain, San Francisco: Supplement 7 from "Mechanics of landslides" (Thesis)

William Maurice Cogen
The purpose of this investigation was to determine whether landslides could be predicted for hill slopes of known inclinations from data secured by laboratory tests performed on samples of the ground under consideration. Specifically, the investigation was to show whether a correlation existed between experimentally determined values for friction and cohesion of ground and calculated values based upon the configuration of earth masses that had slid. The ability to determine the stability of slopes from...

Geologic Sections: Supplement 2 from "The cool-water Timms Point pleistocene horizon at San Pedro, California" (Thesis)

Alex Clark
Timms Point is located in the southeastern part of the town of San Pedro, Los Angeles County, California, just east of the south end of Harbor Boulevard, along the bluff facing the harbor. It is part of the abandoned sea cliff extending from a locality near Point Fermin northward along the east side of the town. The cliff is about forty feet high and its top represents the lowest of a number of marine terraces...

Chart VII – Arrival times of T pulses: Supplement 7 from "Ground vibrations near explosions" (Thesis)

Benjamin F. Howell
Records are shown of the three components of ground vibration taken at distances out to 3284 meters following small explosions of dynamite about ten meters underground. The apparatus used to record this motion is described, and its limitations discussed. The refracted compressional waves recorded are used to calculate roughly the thickness of the near surface layers. Three principal dispersed waves are recognized and described. It is shown that two of these do not behave like...

Geologic map of part of Glenlyon Range and vicinity, Yukon: Supplement 2 from "The texture, origin, and emplacement of the granitic rocks of Glenlyon range, Yukon, Canada" (Thesis)

Richard Bradford Campbell
In Glenlyon range the older pre-intrusive rocks include quartzo-feldspathic schists (Ambibolite facies) with minor carbonate and lime-silicate rocks of the Yukon group overlain by a succession of limestones and slates and phyllites (green schist facies) of the Harvey Group. These rocks form the north limb of an east-west trending anticlinorium. The Drury quartz monzonite is intruded into the axial region of the anticlinorium. This mass grades continuously from a biotite granodiorite core to an outer...

Germanium content of sphalerite: Supplement 9 from "Metallogenic Provinces of the Southwestern United States and Northern Mexico" (Thesis)

C. Wayne Burnham
Some of the metallogenic provinces of the southwestern United States and northern Mexico are defined by the geographic distribution of trace elements in the primary sulfide minerals chalcopyrite and sphalerite. The elements investigated include antimony, arsenic, bismuth, cadmium, cobalt, gallium, germanium, indium, manganese, molybdenum, nickel, silver, tellurium, thallium, and tin. Of these elements, cobalt, gallium, germanium, indium, nickel, silver, and tin exhibit the best defined geographic distribution. The data indicate that chalcopyrite is the preferred...

Red jasper spectrum

George R. Rossman
Jasper, red, Crab lake, Labrador, colored by hematite. This is a reflectance spectrum off a polished slab. The color comes from small inclusions of hematite, Fe2O3, in the quartz.

Geologic map of a part of the Indio Quadrangle: Supplement 1 from "The Geology of the Southern Part of the Indio Quadrangle, California" (Thesis)

Rollin Pollard Eckis
Spurs of the Peninsular Range of Southern California extend southeasterly into the Salton Sink at several places along its western margin, and thus produce a mountain front characterized by deep re-entrant valleys. The origin of these peculiar features has been much discussed, and with this problem in view the present investigation was undertaken. A strip about 15 miles wide across the southern portion of the Indio Quadrangle, extending from the Salton Sea westerly to the...

Map of a portion of Seminole Quadrangle, L.A. Co., California: Supplement 1 from "The geology of a part of Seminole quadrangle, Los Angeles County, California. Geology of Black Butte quadrangle, Los Angeles County, California" (Thesis)

Frederic Carl Emil Oder
The Geology of a part of Seminole Quadrangle, Los Angeles County, California: The work was done in partial fulfillment of the requirements for a Senior Thesis problem at the California Institute of Technology. The area mapped lies roughly as a strip in the central portion of Seminole Quadrangle, Los Angeles County, California. It is bounded on the north by the Los Angeles - Ventura County line, on the east by a line drawn southward from...

Geologic map and section across northern portion of Southern Virgin Mountains: Supplement 2 from "Geology of the vermiculite deposits, Gold Butte mining district, southern Virgin Mountains, Nevada. Ogives of the East Twin Glacier, Alaska--their nature and origin. Investigations in the Taku Glacier firn, Alaska" (Thesis)

Freeman Beach Leighton
Geology of the vermiculite deposits, Gold Butte mining district, southern Virgin Mountains, Nevada: Vermiculite deposits lie within a one mile square area in the Gold Butte mining district, Southern Virgin Mountains, Nevada. An integrated field and laboratory study of the deposits was undertaken in an attempt to determine their origin. Particular attention was devoted to the mineralogy of the vermiculite and associated minerals and the geochemistry of vermuculitization. The deposits occur in ultramafic sheets and...

caltechlibrary/py_dataset: This release tracks libdataset v0.0.64, a candidate for supporting dataset v1

Robert Doiel & Thomas E Morrell
This release is to track the release candidate v0.0.64 of prep for dataset v1. Things that have changed is the frame definition now expects labels as well as dotpath (cli was also update with dataset v0.0.64). Attachments now take an optional semver as last parameter for attach(), detach(), prune(). 'v0.0.0' is treated as un-versioned attachments. Some minor typos and mapping corrected in for libdataset C-Shared libraries. py_dataset/go_dataset.py renamed py_dataset/libdataset.py. Explicit import of the libdataset.py ctype...

Values of (A^3_t-A_0)_(pP): Supplement 1 from "A Study of the Energy Contained in the Seismic Waves P and pP" (Thesis)

Harold Morton Mooney
The energy observed in the seismic waves P and pP in a large number of earthquakes is compared with the theoretical energy calculated from a standard equation, using two partly independent methods. The results are analyzed using as variables depth of focus, distance from epicenter to recording station, geographical location of epicenter and azimuth from station. When compared with the theoretical value, the ratio of the energy in pP to the energy in P averaged...

mdsmarte/ALS-Kinetic-Model: Modeling and Fitting of ALS MPIMS Kinetics

Matthew D. (Matt) Smarte
A library of Python code for modeling chemical kinetics and fitting datasets acquired with the multiplexed synchrotron photoionization mass spectrometry (MPIMS) instrument at the Advanced Light Source (ALS). The ALS.py file contains the code library. The ex_notebook_1.ipynb file is a Jupyter / IPython notebook that contains documentation for ALS.py and provides an example of its usage. The create_model_code.py file contains a utility function to help convert text-formatted kinetic models into Python code. The remaining files...

Map of zones of triangular facets on the escarpment of the Sierra Nevada; Profile of the Sierra Nevada: Supplement 2 from "Quaternary Glaciation and Tectonism in the Southeastern Sierra Nevada, Inyo County, California" (Thesis)

Alan Reed Gillespie
The southeastern Sierra Nevada consists of three geographic regions. From west to east, they are: an upland region across the crest, a steep east-facing escarpment along which Owens Valley has partly subsided, and foothill blocks intermediate to the Sierra Nevada and Owens Valley. Farther east, Owens Valley is a deep graben separating the Sierra Nevada and the Inyo Range. The main goals of this thesis were the detailed mapping of Quaternary glacial and other deposits...

Good Hope Gold Mine, Riverside County, California: Supplement 4 from "I. Geology of the Southwest quarter of the Elsinore Quadrangle. II. Geochemical properties of the waters of the Elsinore Quadrangle [= Geology of the Lake Elsinore Quadrangle, California. Mineral deposits of Lake Elsinore Quadrangle, California]" (Thesis)

Rene Engel
The Lake Elsinore quadrangle covers about 250 square miles and includes parts of the southwest margin of the Perris Block, the Elsinore trough, the southeastern end of the Santa Ana Mountains, and the Elsinore Mountains. The oldest rocks consist of an assemblage of metamorphics of igneous effusive and sedimentary origin, probably, for the most part, of Triassic age. They are intruded by diorite and various hypabyssal rocks, then in turn by granitic rocks, which occupy...

caltechlibrary/epxml_to_datacite: Add a dummy identifier for validation

Thomas E Morrell
Add a dummy identifier field to pass through validation on DataCite Fabrica

Magnetic stratigraphy of the Victorville Fan: Supplement 11 from "The late Cenozoic geology of Cajon Pass : implications for tectonics and sedimentation along the San Andreas fault " (Thesis)

R. J. Weldon
The geology in Cajon Pass, southern California, provides a detailed record of strike slip activity on the San Andreas fault, compressional deformation associated with the uplift of the central Transverse Ranges and an excellent Cenozoic record of syntectonic sedimentation. Age control was established in all of the sediments deposited since the late Early Miocene, using biostratigraphy, magnetostratigraphy, fission-track dating of volcanic ashes, radiocarbon dating, soil development, and the relative stratigraphic and geomorphic position of the...

Generalized geology of the Lava Mountains and vicinity, San Bernardino County, California: Supplement 3 from "Geology and petrology of the Lava Mountains, San Bernardino County, California" (Thesis)

George I. Smith
The Lava Mountains are a range of low mountains along the northern edge of the Mojave Desert, California. The pre-Tertiary rocks consist of a few small pendants of metamorphic rocks in Atolia quartz monzonite. Overlying these are small patches of volcanic and sedimentary rocks, probably Tertiary, which project into the later formations. The major sedimentary unit is the middle Pliocene Bedrock Spring formation; it consists chiefly of arkosic sandstone and conglomerate with lesser amounts of...

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