Geology Commons^™

Controls On Paradox Salt Deposition In The Area Of Comb Monocline San Juan County, Utah, Jim S. Hinds

Earth and Planetary Sciences ETDs

This study was undertaken for the purpose of delineating the configuration of the Paradox salt wedge edge in relation to the Comb monocline structure. It was designed to illustrate whether or not, and to what extent, the Comb structure was a submarine barrier controlling deposition of sediments on the western shelf of the Paradox seaway during middle Paradox time.

Spores Of The Pennsylvanian Toronto Limestone In Kansas And Oklahoma, James F. Carter

Earth and Planetary Sciences ETDs

The Toronto cyclothem is the lower limestone member of the Oread megacyclothem of the Shawnee group, Virgilian series, Pennsylvanian system and crops of in a linear belt extending north-south for a distance of 300 miles across Oklahoma, Kansas, and parts of Missouri and Nebraska.

An Aeromagnetic And Geologic Reconnaissance Survey Of The Sidney - Augusta And Gardiner Areas : Kennebec County, Maine, Lawrence A. Wing

Maine Collection

An Aeromagnetic and Geologic Reconnaissance Survey of the Sidney - Augusta and Gardiner Areas : Kennebec County, Maine

(GP & G Survey #5)

by Lawrence A. Wing, Chief Geologist, James W. Sewall Company, Old Town, Maine.

Maine Geological Survey, Department of Economic Development, Augusta, Maine - August 12, 1959.

Mineral Deposits Of The Granite Gap Area, Hidalgo County, New Mexico, David N. Cargo

Earth and Planetary Sciences ETDs

The Granite Gap area lies in the central part of the Peloncillo Mountains about 28 miles southwest of Lordsburg, New Mexico. Ores of lead, zinc, silver, and tungsten from four separate deposits have been mined there during the past seventy years.

Pennsylvanian Spores From The Sandia Formation Santa Fe County, New Mexico, Thomas L. Carten

Earth and Planetary Sciences ETDs

No abstract provided.

Petrology Of The Tijeras Greenstone, Bernallio County, New Mexico, John J. Bruns

Earth and Planetary Sciences ETDs

The Precambrian metamorphosis rocks of the Tijeras Canyon area crop out along a five-mile, northeast-trending belt, which lies approximately five miles east of the Sandia Mountains front, in north-central New Mexico. The sequence, to the east, is overlain uncomfortably by Pennsylvanian Madera limestone, while the trace of the Tijeras fault marks the western side.

The Geology Of South Fork Thrust And Subsurface Geology Of The Belknap Ranch, Park County, Wyoming, James L. Deurmyer

Earth and Planetary Sciences ETDs

The segment of the South Fork thrust in the Belknap ranch area contains rocks representative of the Upper Jurassic, Lower Cretaceous and Upper Cretaceous. The thrust plate occupies 75 percent of the mapped area. Approximately 3,500 feet of predominantly marine rocks comprise the detachment thrust and about 15 percent of the exposed rocks of the thrust plate is sandstone and conglomerate. All the rock units present in the thrust plate crop out beyond the edge of the over-riding mass except the Sundance and Morrison formations. Approximately 4,600 feet of geologic section is exposed of drilled in the mapped area. The …

Geologic And Ground-Water Reconnaissance Of The Loup River Drainage Basin Nebraska, R. T. Sniegocki, R. H. Langford

United States Geological Survey: Publications

The Loup River and its tributaries drain an area of about 15,230 square miles in central Nebraska. The upper three-fifths of the drainage basin is in the Sand Hills region of Nebraska, and the lower two-fifths is in the loess plains and hills region. An eastward-thinning wedge of semiconsolidated and unconsolidated deposits of Tertiary and Quaternary age underlies the surficial dune sand and loess. These deposits, which are recharged by infiltrating precipitation, contain a tremendous volume of water at least 400 million acre-feet and annually discharge about 1.7 million acre-feet into streams. Although wells supply nearly all the water used …

The Jurassic Todilto Formation Of New Mexico, Henry O. Ash

Earth and Planetary Sciences ETDs

The Todilto formation of New Mexico is a widespread and distinctive Jurassic unit confined to the northern one-half of the State and adjacent parts of Arizona and Colorado. It consists of a lower Limestone member and an upper Gypsum member. The Gypsum member also contains some limestone. The two members are not coextensive in area. Both are present in the central part of the area in which the formation is found, but the Limestone member extends far beyond the limits of the Gypsum member.

The Environment Of The Jurassic Todilto Basin, Northwestern New Mexico, Douglas W. Kirkland

Earth and Planetary Sciences ETDs

The Todilto evaporites of Upper Jurassic age were precipitated in a basin which covered more then 34,000 square miles of northwestern New Mexico and parts of Colorado and Arizona. The Todilto formation consists of a lower Limestone and an upper Gypsum member, and has a maximum thickness of a little more than 100 feet. Both members are varved.

Geology Of The Pedernal Hills Area Torrance County, New Mexico, John F. Fallis

Earth and Planetary Sciences ETDs

The area included in this report is in the north-central part of Torrance county, central New Mexico. The area is bounded on the north by U.S. Highway 66, on the east by U.S. Highway 285, on the south by U.S. Highway 60, and on the west by the approximate eastern edge of the Estancia basin. Clines Corners on U.S. Highway 66 forms the Northeast corner of the area. The mapped area contain approximately 230 square miles.

Geology Of The Hidden Mountains Valencia County, New Mexico, Patrick J.F. Gratton

Earth and Planetary Sciences ETDs

The hidden mountains are located in Valencia County, New Mexico, immediately southwest of the point where New Mexico State Highway 6 and the Santa Fe Railroad cross the Rio Puerco. This location places the Hidden Mountains near the center of the west half of the Albuquerque-Belen basin of structural and geomorphic Rio Grande Depression.

Stratigraphy And Structure Of The French Mesa Area, Rio Arriba County, New Mexico, Francis L. Fitter

Earth and Planetary Sciences ETDs

The French Mesa Area includes over 120 square miles between the Nacimiento- San Pedro uplift and the Gallina Mountain uplift in Rio Arriba County, New Mexico. The French Mesa anticline is the most striking structural and topographic feature of the area.

Maine Granite Quarries And Prospects, John R. Rand

Maine Collection

Maine Granite Quarries and Prospects : Minerals Resources Index No.2

John R. Rand, State Geologist - Maine Geological Survey

Department of Economic Development, Augusta, Maine : May 1, 1958.

Contents: Introduction / Acknowledgements / Explanatory Considerations / Selected Bibliography / Granite Quarries and Prospects -- Alphabetical Index / Granite Quarries and Prospects -- Country-Township Index / Buildings and Structures Built of Maine Granites / Granite Quarries and Prospects-Map Index (missing).

Geology Of The Northern End Of San Pedro Mountain, Rio Arriba And Sandoval Counties, New Mexico, Osler C. Hutson

Earth and Planetary Sciences ETDs

The structural complexity of this area provided the initial stimulus for this study. With encouragement from Dr. Vincent C. Kelley, the study of this area was undertaken as a master's thesis project. The field work necessary to the project was begun in February, 1957 and completed during the summer of 1957. Mapping was accomplished with the aid of aerial photographs scaled two inches equals one mile. Data were transferred from photographs to a U.S. Soil Conservation Service planimetric map. Strati graphic sections were measured with Brunton compass and a 50-foot steel tape.

Microstratigraphic And Sedimentational Studies Of An Early Man Site Near Lucy, New Mexico, Jerry Harbour

Earth and Planetary Sciences ETDs

The purpose of the study has been to interpret the sedimentary record of the Lucy site deposits in order to establish a climatic sequence into which various cultural zones, especially the Sandia, may be placed, and to date this climatic sequence as accurately as possible. A second purpose has been to establish the reliability of the Pleistocene Lake Estancia shore levels as a regional floating chronology of climatic events, and to correlate the Lucy site sediments with this regional chronology. By means of the Lucy site artifacts, this chronology is partly fixed in time, so as a result of the …

Correlation Of Reef Calcarenites Of The Pennsylvanian Paradox Formation, San Juan County, Utah, Jack Jordan

Earth and Planetary Sciences ETDs

This thesis is a summation of lithologic analyses of three stratigraphic sections: the Danvers 1-X Harris-Federal test, the Honaker Trail locality, and the Raplee locality in San Juan Canyon, San Juan County, Utah (FIg. 1) In these localities, the Paradox Formation as defined by Wengerd and Strickland (1954, p.2169) has been studied, inasmuch as the formation is known to contain limestone bioherms ("reefs") (Wengerd, 1951) in conjunction with biostromal strata.

Maine Pegmatite Mines And Prospects And Associated Minerals, Maine Geological Survey

Maine Collection

Maine Pegmatite Mines and Prospects and Associated Minerals

Minerals Resources Index No.1 - Maine Geological Survey

Department of Development of Industry and Commerce, Augusta, Maine (March 1, 1957).

Contents: Introduction / Acknowledgments / Explanatory Considerations / Selected Bibliography / Pegmatite Mines and Prospects - Alphabetical Index / Pegmatite Mines and Prospects - County-Township Index / Pegmatite Mines and Prospects - Map Index.

Also Includes: Southwestern Maine - Pegmatite Localities and Access Highways / Index Map Showing Mining Districts and Detailed Plate Locations

Geology And Ground-Water Resources Of The Portales Valley Area, Roosevelt And Curry Counties, New Mexico, Sherman E. Galloway

Earth and Planetary Sciences ETDs

Since 1910, and particularly since the closing years of World War II, considerable development of the ground water occurring in the valley fill has been made for irrigation purposes. This increase in development has resulted in a progressive decline of the water levels in this area. The results of this study indicate that the water occurring in the valley fill is the only water of good chemical quality occurring in the Portales Valley that can be obtained in quantities that are sufficient for normal irrigation, municipal, industrial, stock, and domestic uses, and that if the present rate of ground water …

Paleozoic Stratigraphy Of The Mud Springs Mountains, Sierra County, New Mexico, John Davis Hill

Earth and Planetary Sciences ETDs

This thesis gives a history of the terminology of each of the formations found in the Mud Springs Mountains as well as a discussion of the characteristics of each. The Mud Springs Mountains Section of Paleozoic rocks is 3660 feet thick. Parts of all the Paleozoic systems are represented except the Silurian and Mississippian. The Bliss sandstone is 145 feet thick, the lower 65 feet being late Cambrian and the upper 80 feet being early Ordovician. The El Paso limestone of early Ordovician age is 460 feet thick.

The Instability Of Folded Structures, Robert Del Mar

Earth and Planetary Sciences ETDs

Folded structures are not necessarily stable through geologic time. "Unfolding" is defined as the changes in attitude through with folded structures go subsequent to their creation by tectonic means, other than by faulting alone. The principal types of unfolding, together with their causes, are: (1) the effect of gravity on isolated structures, and the effects of loading and unloading insofar as the gravitational force is concerned; (2) basining action and its effect on unloading; (3) the action of vertical forces on folded structures; (4) migrating or "wave" folds in relation to unfolding.

Genetic Study Of Some Pyrrhotite Deposits Of Maine And New Brunswick, Dept. Of Development Of Industry And Commerce

Maine Collection

Genetic Study of Some Pyrrhotite Deposits of Maine and New Brunswick

by Robert S. Houston

Maine Geological Survey - Bulletin 7

Department of Development of Industry and Commerce, Augusta, Maine (January, 1956).

Contents: Abstract / Introduction / Field and Laboratory Studies / Regional Geography / Regional Geology / Pyrrhotite Deposits / Description of Individual Deposits / Literature Cited

Records Of Wells Drilled For Oil And Gas In New Mexico, George H. Dixon

Earth and Planetary Sciences ETDs

This report contains information compiled from data in the files of the U.S. Geological Survey, the New Mexico Bureau of Mines and Mineral Resources, and oil and gas companies on nearly 3,000 of the more than 13,000 wells drills in New Mexico prior to September 1, 1953. The tabulation is believed to include all unsuccessful wildcat test wells, most of the unsuccessful field extension wells, and most of the discovery wells for the various producing areas, even though they may be shut or abandoned at the present time. In addition, the list contains some deep tests and some wells representative …

The Crystal Structure Of Ceni, Joseph J. Finney

Earth and Planetary Sciences ETDs

X-ray diffraction methods were used to determine the cell constants and structure of CeNi. The unit cell is orthohombic. The spcae group is probably Cmcm with a_O=3.77 +/- 0.01, b_O=10.46 +/- 0.02, c_O=4.37+/- 0.01 A. The cell formula is Ce₄Ni_4. The observed density if 7.51 grams/cm³ and the calculated density is 7.65 grams/cm³, a deviation of 1.8%.

Stratigraphic Relationships Of Cretaceous And Early Tertiary Rocks Of A Part Of Northwestern San Juan Basin, Elmer H. Baltz Jr.

Earth and Planetary Sciences ETDs

No abstract provided.

Stratigraphic Analysis Of The Upper Cretaceous Pictured Cliffs Sandstone In Northeastern San Juan County, New Mexico, John W. Caldwell

Earth and Planetary Sciences ETDs

The San Juan Basin is located in northwestern New Mexico and southern Colorado and is physiographically a part of the Colorado Plateau province.

The Upper Cretaceous Pictured Cliffs sandstone is exposed around the perimeter of the San Juan Basin and is present throughout the greater part of the Basin in the subsurface. This economically important gas-bearing sandstone is situated in the structural basin in which the strata are upturned on the basinward flanks of the nearby Laramide cliffs.

Five possible origins for the Pictured Cliffs gas are presented: from the underlying Lewis shale, from within the Pictured Cliffs sandstone, from …

The Variegated Member Of The Morrison Formation In The Southeastern Part Of The San Juan Basin, Valencia County New Mexico, William L. Chenoweth

Earth and Planetary Sciences ETDs

The strata now designated as Morrison in western New Mexico have been known by a variety of names since the beginning of geological exploration in the West. The nomenclature has become confused due to the many facies that are present. Recent exploration for uranium has renewed interest in the stratigraphy of the Morrison formation.

The Structural Geology Of The Cerrillos Hills Area, New Mexico, Alan E. Disbrow

Earth and Planetary Sciences ETDs

The earliest major structural deformation recorded in rocks exposed in the Cerrillos area occurred during the Laramie uplift of the Sangre de Cristo Mountains. This resulted in an erosional wedging of Upper Cretaceous strata at a rate of 130 feet per mile. Subsequent deposition of the Eocene Galisteo sand, clay, and gravel overstepped this surface in a sourceward direction.

At the beginning of work on this project the major problem was to determine the geological structure of the Cerrillos Hills. It was felt that a large-scale geologic map of an area extensive enough to reveal the structurally complex center of …

The Huego (Gym) Limestone, Luna County, New Mexico, Lowell E. Bogart

Earth and Planetary Sciences ETDs

Southwestern New Mexico is characterized by Basin and Range Physiography. Nearly level bolson plains are interrupted irregularly by linear mountain ranges. Sedimentary rocks ranging in age from Cambrian and recent crop out in the mountain areas. Darton (1916) mapped and described a limestone formation, about 1,000 feet thick, which he named Gym limestone. He thought the Gym was restricted in outcrop to Luna County and was distinct from previously described Paleozoic formations. The Gym was originally thought to be Pennsylvanian in age but later on was regarded as Permian. In the restudy of the Gym limestone was the basis of …

Geology Of The Mcrae Canyon Area Sierra County, New Mexico, Hugh P. Bushnell

Earth and Planetary Sciences ETDs

Sedimentary Rocks exposed at the surface in the low area between the north-trending Caballo and Fra Cristobal Mountains of south-central New Mexico include the late Cretaceous Mesaverde formation, the late Cretaceous and early Tertiary McRae formation, and the Miocene-Pliocene Santa Fe formation. A thin veneer of Jordana pediment gravel covers the older rocks on the eastern edge of the area.