Geology Commons^™

A Resource Survey Of The Coastal Lands From Vlaming Head To Tantabiddi Well, West Cape Range Region, P A. Hesp, J G. Morrissey

Resource management technical reports

The report comprise four parts; a brief review of the area's climate, discussion of the geomorphology of the major landform units, an assessment of the potential erosion hazards of the surveyed landforms, and recommendations for development.

Peat Resources Of Maine - Volume 4: Southern And Western Maine, Cornelia C. Cameron, Michael K. Mullen, Carolyn A. Lepage

Maine Collection

Peat Resources of Maine - Volume 4: Southern and Western Maine

by Cornelia C. Cameron, Michael K. Mullen, Carolyn A. Lepage & Walter A. Anderson

Bulletin 31 - Maine Geological Survey, Department of Conservation, Augusta, Maine (1984).

Preparation of this report was supported by funds furnished by the U.S. Department of Energy, Grant No. DE-FG18-79ET14690, the Maine Office of Energy Resources, the Maine Geological Survey, and the U.S. Geological Survey.

Contents: Introduction / The Maine Peat Resource Evaluation Program / Geologic Setting of Maine Peat Deposits / Formation of Peat Deposits in Maine / Methods of Investigation / Identification of …

Stratigraphy And Depositional Environments Of The Three Forks Formation (Upper Devonian), Williston Basin, North Dakota, Gayle M. Dumonceaux

Theses and Dissertations

The Three Forks Formation (Upper Devonian) is present in the subsurface in the western two-thirds of North Dakota and is generally conformable with the underlying Birdbear Formation and the overlying Bakken Formation.

The Three Forks attains a maximum thickness of 265 feet (81 meters) in the central basin, east and south of the Nesson Anticline, and thins to an erosional edge in eastern North Dakota. The Three Forks is composed of micrite and dolomicrite, which may be fcssiliferous and argillaceous. From the study of core samples and detailed petrographic analysis of thin sections, five lithofacies were recognized and their extent …

Depositional Environments And History Of The Winnipeg Group (Ordovician), Williston Basin, North Dakota, Stephen C. Thompson

Theses and Dissertations

The Winnipeg Group (Ordovician) in the Williston Basin, North Dakota, contains three formations. They are, in ascending order, the Black Island Formation, herein informally divided into lower and upper members, the Icebox Formation, and the Roughlock Formation. Strata of the Winnipeg Group (maximum thickness 400 ft., 122 m) represent the initial deposits of a Middle Ordovician craton-wide transgression. Throughout most of North Dakota, the Winnipeg is unconformably underlain by the Deadwood Formation (Upper Cambrian-Lower Ordovician) and conformably overlain by the Red River Formation (Upper Ordovician).

The strata of the lower member of the Black Island Formation consist of a red-bed …

Archean Metamorphism In Northwestern Ontario And Southeastern Manitoba, Kevin R. Henke

Theses and Dissertations

Four areas are considered in this study. In Ontario, north-south traverses were made along Highway 599 between Savant Lake and Central Patricia, along the Vermilion River road (40 kilometers northeast of Sioux Lookout) and along Highway 105 between Vermilion Bay and Ear Falls (Fig. 3). The fourth area is centered at Bird River, northeast of Lac du Bonnet, Manitoba. The study areas are located in the Uchi, English River and Wabigoon Subprovinces.

The traverse along Highway 599 between Savant Lake and Central Patricia crosses the three subprovinces (Fig. 3). Pelites in the eastern Lake St. Joseph area (Uchi Sub province) …

Depositional Cycles And Coral Distribution, Mission Canyon And Charles Formations, Madison Group (Mississippian), Williston Basin, North Dakota, Douglas L. Waters

Theses and Dissertations

The distribution of corals, other fossils, and rock types of the Madison Group in the Williston Basin were studied in 29 cores (involving over 6,200 feet of core) from the Bottineau, Tilston, Frobisher-Alida, and Ratcliffe intervals in the western half of North Dakota. Occurrence of rock types, corals, and other fossils (brachiopods, bryozoans, red algae, and gastropods) of the Mission Canyon and lower Charles Formations were plotted in three cross-sections against the informal marker-defined intervals (Tilston, Frobisher-Alida, and Ratcliffe), as identified from well logs. Distribution and abundance of corals in nine of the more extensive cores were related to interpreted …

Stratigraphy And Sedimentology Of Paleogene Arkosic And Volcaniclastic Strata, Johnson Creek-Chambers Creek Area, Southern Cascade Range, Washington, Warren Jon Winters

Dissertations and Theses

Over 1150 m of middle to late Eocene nonmarine arkose, lithic arkose, mudstone, and siltstone, referred to here as the Chambers Creek beds, are int~r.stratified with, and overlain by over 1600 m of late Eocene-Oligocsne(?) andesitic volcaniclastic and subordinate volcanic rocks assigned to the Ohanapecosh Formation, in a dissected structural high in the southern Washington Cascade Range, about 18 km south-southeast of the town of Packwood.

Terence E. Hays's Review Of R. J. Blong's The Time Of Darkness: Local Legends And Volcanic Reality In Papua New Guinea, Terence E. Hays

Pacific Studies

No abstract provided.

Stratigraphy Of The Inyan Kara Formation (Lower Cretaceous) In The Vicinity Of The Nesson Anticline, Northwestern North Dakota, Brad L. Wartman

Theses and Dissertations

The Lower Cretaceous Inyan Kara Formation, at the base of the Dakota Group, consists of sandstone, siltstone, shale, and coal. The stratigraphy of the Inyan Kara and facies relationships within the formation and with the underlying Swift and overlying Skull Creek Formations in the vicinity of the Nesson Anticline, northwestern North Dakota, were evaluated using 11 cross-sections, 163 borehole geophysical logs, and 1 well core.

The Inyan Kara can be differentiated on well logs into three members. The basal member, "A", consists of sandstone, siltstone, shale, and coal. It is about 200 feet (60 m) to 400 feet (122 m) …

A Description Of The Soils And Geology Of The Berkshire Valley Experimental Catchment, M R. Wells, D J. Mcfarlane

Resource management technical reports

Basic land resource data are provided in this report to assist an investigation of the effect of contour banking on surface runoff in the Berkshire Valley experimental catchement. Brief descriptions of the catchment's geology, soils and their inferred hydrological significance are provided and a 1:2000 scale map produced. Of major significance to the hydrologic study is the fact that soil depth and internal drainage conditions were found to be not related to landscape positions.

Important Geological Features And Localities Of Maine, Maine Geological Survey

Maine Collection

Important Geological Features and Localities of Maine

Executive Department, Maine Geological Survey : Maine State Planning Office

(December, 1982).

Contents: Introduction / Purpose of this Study / The Geology of Maine / Important Publications / Catalogue of the Critical Geologic Features of Maine / Recommendations for Further Research / Publications / Conclusions / Acknowledgements / References Cited / Critical Areas Program List of Geological Planning Reports

Therometry And Barometry Of Precambrian Orthogneisses And Related Rocks From The Minnesota River Valley, Southwestern Minnesota, Paula J. Leier

Undergraduate Theses and Senior Projects

Granulite facies metamorphism is reported to have occurred in the Granite Falls-Montivideo area of the Minnesota River Valley and a broader view of the valley is taken to determine the extent of granulite facies metamorphism. Pressures and temperatures of metamorphism were determined using two geothermometers and one geobarometer. Based upon two-feldspar and garnet-biotite thermometers, temperature of metamorphism is approximated at 600 °c. Metamorphic pressures based on the reaction cordierite= garnet+ quartz + sillimanite were probably between 4 and 6 Kbars. Based on barometry and thermometry, it is suggested the Algoman o rogeny (2600 m.y. ago) was at least upper amphibolite …

Carbonate Bodies Within The Basal Swift Formation (Jurassic) Of Northwestern North Dakota, Tina M. Langtry

Theses and Dissertations

The carbonate bodies of the basal Swift Formation (Upper Jurassic) occur as anomalous deflections on a relatively uniform mechanical well log section. The areal distribution, stratigraphic relationships, and genesis of the carbonate bodies were determined by using the gamma ray log, the spontaneous-potential log, the resistivity log suite, and megascopic and microscopic core analysis.

The carbonate bodies of the basal Swift Formation are coarsening upward sequences composed of predominantly sand-sized, recrystallized mollusk grains. These grains were transported by strong bottom cur rents across the irregular sea floor of the shallow epicontinental Jurassic sea, and were deposited under agitated water conditions …

Paleocene Coal-Bearing Sediments Of The Williston Basin, North Dakota : An Interaction Between Fluvial Systems And An Intracratonic Basin, Laramie M. Winczewski

Theses and Dissertations

Outcrop and test hole data for 225 sites in a 33,700-km² area of southwestern North Dakota were examined. Seven sedimentation intervals were identified for the Paleocene Bullion Creek and Sentinel Butte Formations. The intervals extend from the top of the Harmon coal (lower Bullion Creek) to the top of the Twin Buttes coal (upper Sentinel Butte). Each interval consists of medium and fine elastics underlying a persistent lignite coal, or some other lithology at the stratigraphic position of the coal. Clastics are finer-grained upwards within intervals and within both formations to the upper Sentinel Butte.

Sand-rich zones align northwest-southeast, …

The Petrochemistry Of The Ankara Volcanics, Central Turkey, Jay A. Ach

Geology Theses and Dissertations

The Ankara volcanics comprise a small volcanic field immediately to the north of Ankara, Turkey. This volcanic field is composed of a mixture of flows, tuffs, and agglomerates, with the flows ranging in composition from high-K basaltic andesite to rhyolite. Dacitic flows are the most common. A potassium-argon date gives a Middle Eocene age of 42.0 ± 1.6 m.y. The volcanics unconformably overlie Paleozoic sediments of the "Cimmerian continent" to the south and Mesozoic rocks of the Ankara melange to the north.
Results of analyses on 25 samples for major elements and Y, Sr, Rb, Ni, Cr, V, Co, Zn, …

U-Pb Studies Of Zircon Cores And Overgrowths, And Monazite: Implications For Age And Petrogenesis Of The Northeastern Idaho Batholith, M. E. Bickford, R. B. Chase, B. K. Nelson, Robert Duncan Shuster, E. C. Arruda

Geography and Geology Faculty Publications

U/Pb isotopic studies of zircons, many containing xenocrystic cores with euhedral overgrowths, and monazite from igneous rocks and metasedimentary inclusions of the northeastern Idaho batholith yield linear arrays on concordia diagrams. We interpret these as mixing lines between an old component (cores) and a young component (overgrowths and zircons without cores). The lower intercept of such arrays with concordia may yield the minimum age of the rocks if the overgrowths and zircons without cores are discordant, or the crystallization age if they are concordant. Monazites yield apparently concordant ages either equal or less than the lower intercept zircon ages. The …

Mineralogy And Petrology Of Lava Flows (Tertiary-Quaternary) In Southeastern Idaho And At Black Mountain, Rich County, Utah, Barbara J. Puchy

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Lava flows of Tertiary-Quaternary age occur in Enoch Valley, Upper Valley, and Slug Valley in southeastern Idaho. The basalts in Upper Valley and Enoch Valley contain olivine (Fo₆₉ to Fo₃₇), plagioclase (An₆₂ to An₃₉), augite and Fe-Ti oxides. The lava in Slug Valley lacks plagioclase, but contains sanidine (Or₇₀ to Or₅₆) with a trace of biotite and amphibole, and thus, has been termed alkali trachyte.

Black Mountain, on the eastern side of Bear Lake, northeastern Utah, is capped by basalt. Minerals present include olivine (Fo₈₃ to Fo₇₂), plagioclase …

Geology For The Layman, James O. Staggs

Annual of the Arkansas Natural Resources Law Institute

The first thing that an individual must thoroughly understand, is that geology is not an exact science. This may be strange for a geologist to say, but it is very similar to the profession of law in that any set of data may be and is usually interpreted differently by individual lawyers. We geologist start with some known facts (sometime geological), make assumptions, and then intrepret into the unknown. It is this interpretation that separates a successful geologist from a geologist. A successful oil finding geologist is a geologist that has developed this interpretation of geological facts into an art. …

Geologic Map And Coal Sections Of The Red Point Quadrangle, Eugene G. Elllis, U.S. Forest Service, U.S. Geological Survey, Joseph R. Frank

All U.S. Government Documents (Utah Regional Depository)

Red Point quadrangle, in Emery County in central Utah, was mapped in 1979 as a part of the U.S. Geological Survey's progress to evaluate lands in the public domain for potential coal leasing. Mapping was done using U.S. Forest Service color aerial photographs at a scale of 1:15,640 and U.S. Geological Survey black-and-white aerial photographs at a scale of 1:30,000. The quadrangle was mapped previously by Spicker (1931) at a scale of 1:62,500.

Stratigraphy And Depositional Environments Of The Wilcox Group (Paleocene) At The Oxbow Mine Site, Northwestern Louisiana, Richard E. Halle

Theses and Dissertations

The stratigraphy, structure, and depositional environments of the Naborton, Do let Hills, and part of the Cow Bayou Formations (Wilcox Group, Paleocene) at the Oxbow Mine site, Red River, De Soto, and Natchitoches Parishes,. Louisiana, were evaluated from a study of four continuous cores and 466 geophysical logs.

Overlying 40 feet {12 m) of silty Porters Creek shale is the Naborton Formation composed of 130-195 feet (40-59 m) of sand, silt, clay, and lignite. There are three lignites in this formation and their average total thickness is 13.5 feet (4. l m), or about 10% of the formation thickness. The …

Stratigraphy And Sedimentology Of The Sentinel Butte Formation (Paleocene) Near Lost Bridge, Dunn County, West-Central North Dakota, Bradley D. Nesemeier

Theses and Dissertations

The Sentinel Butte Formation (Paleocene) near Lost Bridge, Dunn County, west-central North Dakota, is 190 meters thick, and is charac terized by four main lithologies: sand, silt, clay, and lignite. The study interval is ISO meters thick, and lies between the basal sand of the formation and the Bullion Butte lignite bed, neither of which are exposed in the immediate study area. Sand, gray to yellow, makes up about 3S% of the interval studied. It occurs in tabular beds 2-18 meters thick. It is fine to very-fine, angular, and composed largely of quartz, feldspar, rock fragments, with minor amounts of …

Geology, Characteristics, And Resource Potential Of The Low Temperature Geothermal System Near Midway, Wasatch County, Utah, James F. Kohler

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Recent awareness of the finite nature of fossil-fuel resources has resulted in an increased interest in alternate sources of energy such as geothermal. To evaluate the geothermal energy potential of the hot-springs system near Midway, Wasatch Co., Utah, consideration was given to heat flow, water chemistry, and structural controls.

Abnormal heat flow was indicated qualitatively by snow-melt patterns and quantitatively by heat-flow measurements that were obtained from two of four temperature-gradient wells drilled in the area. These measurements indicated that the area north of the town of Midway is characterized by heat flow equal to 321.75 mW/m², which …

Geology And Groundwater Supplies Of Box Butte County, Nebraska, 1979, V. L. Souders, F. A. Smith, J. B. Swinehart

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Geology Along The Republican River Valley Near Red Cloud, Nebraska, R. K. Pabian, J. B. Swinehart

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Analysis And Interpretation Of The 5,000 Ft. (1,538 M) Red-Bed Sequence Encountered In The Sparks E̲T̲ A̲L̲. #1-8 (Michigan Basin Deep Borehole), John H. Fowler

Masters Theses

A 5,000 ft (1,538 m) pre-Mt. Simon (Upper Cambrian) red-bed sequence, encountered in the Gratiot County deep borehole (Sparks et al. #1-8) and herein na~ed the North Star Formation, consists of undeformed recurring beds of immature arkosic sandstone 2 to 34 in. (5 to 85 cm) thick. These beds grade upward from erosional basal contacts into mudstone units 1 in to 12 ft (3 cm to 3.8.m) thick. Within the sandstones, grading, horizontal lamination, and crossstratification define Bouma intervals "a", "b", and "c", which combine to form incomplete Bouma sequences. Mudstones exhibit abundant horizontal laminations. Secondary sedimentary structures (load . …

Agricultural Geology, R. Fenwick

Natural resources published reports

WESTERN AUSTRALIA

Precambrian rocks occupy 1.5 million kn2 or roughly 60% of the total land area of the state, to form one of the most extensive and varied precambrian regions of the world. The oldest rocks are the comparatively little altered sediments and volcanics of the Pilbara Diock whose age must exceed that of the 3 000 million year old granites which intrude then

Western Australia is divisable into two broad geological types. The great plateau or Western or Archean Shield and coastal and inland basins.

The Western Shield is the largest area of Archean (Archeozoic era) rocks in Australia, …

Petrology Of Metadiabase Intrusions In The White Rock Quadrangle, Western North Carolina, Dale M. Burton

Online Theses and Dissertations

The White Rock quadrangle is located in extreme west­ central North Carolina, at the northwest edge of the Blue Ridge thrust sheet. The geology of the north-central ninth of the quadrangle was mapped during this study. This map area primarily consists of Precambrian granitic gneisses of the Blue Ridge thrust sheet that are separated from metasedimentary rocks of the Wilhite Formation of the Ocoee Series by the Devils Fork fault.

Of the six metadiabase bodies mapped by Keith (1904) in the White Rock quadrangle, only three definitely contain outcrops of metadiabase. These bodies were metamorphosed to the chlorite and biotite …

Hydrothermal Alteration At The Roosevelt Hot Springs Thermal Area, Utah: Petrographic Characterization Of The Alteration To 2 Kilometers Depth, J. M. Ballantyne, W. T. Parry

All U.S. Government Documents (Utah Regional Depository)

Hydrothermal alteration in drill cuttings from Thermal Power drillhole 14-2, Roosevelt Hot Springs Thermal area, has been studied petrographically. The hole is sited in alluvium approximately 1.6 km southeast of the old Resort and was rotary drilled to a depth of 1866.0 m. The exact hole location is 2310 FNL, 350 FWL, Sec. 2, Twp 27S, Rge 9W, elevation 1908.5 m. Core was extracted from 792.5 to 795.5 m. Thin sections were made from samples 15.2 m intervals of drill cuttings collected at 1.5 or 3.0 m intervals during drilling. Thin sections were made of 1.5 or 3.0 m intervals …

Stratigraphy, Sedimentary Petrology, And Depositional Environments Of Tillite In The Upper Precambrian Mount Rogers Formation, Virginia, Richard L. Rexroad

LSU Historical Dissertations and Theses

The upper member of the upper Precambrian Mount Rogers Formation of southwestern Virginia includes thick units of massive conglomeratic mudstone Interpreted as tillite (Rankin, 1970; Blondeau and Lowe, 1972; Blondeau, 1975; Schwab, 1976). The tillite is composed of unsorted angular plutonic, metamorphic, volcanic, and sedimentary rock fragments enclosed within a matrix of sandy hematitic mudstone. The tillite is interbedded with arkosic sandstone, argillite, and conglomerate. Sedimentary structures and textures of these units suggest deposition by glaciers which protruded from land into a standing body of water as floating ice. Glacial drift was deposited in a large body of water, probably …

Quaternary Rhyolite From The Mineral Mountains, Utah, U.S.A., S. H. Evans, Jr., W. P. Nash, University Of Utah, Department Of Geology And Geophysics

All U.S. Government Documents (Utah Regional Depository)

A suite of silicic volcanic rocks is associated with the Roosevelt Hot Springs geothermal area in southwestern Utah. The volcanic sequence includes Tertiary rhyolite 8 m.y. old and obsidian, ash and rhyolite of Quaternary age. The Quaternary lavas are characterized by high silica content (76.5% SiO2) and total alkalies in excess of 9 percent. Obsidians commonly contain greater amounts of flourine than water. Two older flows (0.8 m.y.) can be distinguished from younger dome and pyroclastic material (approximately 0.5 m.y.) by subtle differences in their chemistry. The mineralogy of the rhyolites consists of alkali feldspar, plagioclase, and small amounts of …