William E. Galloway Research Professor
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The Sedimentology and Mineralogy of the River Uranium Deposit Near Phuthaditjhaba, Qwa-Qwa
PER-74 THE SEDIMENTOLOGY AND MINERALOGY OF THE RIVER URANIUM DEPOSIT NEAR PHUTHADITJHABA, QWA-QWA by J. P. le Roux NUCLEAR DEVELOPMENT CORPORATION OF SOUTH AFRICA (PTY) LTD NUCOR PRIVATE MO X2M PRETORIA 0001 m•v OCTOBER 1982 PER-74- THE SEDIMENTOLOGY AND MINERALOGY OF THE RIVER URANIUM DEPOSIT NEAR PHUTHADITJHABA, QWA-QWA b/ H.J. Brynard * J.P. le Roux * * Geology Department POSTAL ADDRESS: Private Bag X256 PRETORIA 0001 PELINDABA August 1982 ISBN 0-86960-747-2 CONTENTS SAMEVATTING ABSTRACT 1. INTRODUCTION 1 2. SEDIMENTOLOGY 1 2.1 Introduction 1 2.2 Depositional Environment 2 2.2.1 Palaeocurrents 2 2.2.2 Sedimentary structures and vertical profiles 5 2.2.3 Borehole analysis 15 2.3 Uranium Mineralisation 24 2.4 Conclusions and Recommendations 31 3. MINERALOGY 33 3.1 Introduction 33 3.2 Procedure 33 3.3 Terminology Relating to Carbon Content 34 3.4 Petrographic Description of the Sediments 34 3.5 Uranium Distribution 39 3.6 Minor and Trace Elements 42 3.7 Petrogenesis 43 3.8 Extraction Metallurgy 43 4. REFERENCES 44 PER-74-ii SAMEVATTING 'n Sedimentologiese en mineralogiese ondersoek is van die River-af setting uittigevoer wat deur Mynboukorporasie (Edms) Bpk in Qwa-Qwa, 15 km suaidwes van Phu triad it jnaba, ontdek is. Die ertsliggaam is in íluviale sand-steen van die boonste Elliot- formasie geleë. Palleostroomrigtings dui op 'n riviersisteem met 'n lae tot baie lae 3d.nuositeit en met "h vektor-gemiddelde aanvoer- rigting van 062°. 'n Studie van sedimentere strukture en korrelgroottes in kranssnitte is deuir to ontleding van boorgatlogs aangevul wat die sedimentêre afsettingsoragewing as h gevlegte stroom van die Donjek-tipe onthul. -
Sedimentology and Stratigraphy
SEDIMENTOLOGY AND STRATIGRAPHY COURSE SYLLABUS FALL 2003 Meeting times This class meets on Tuesday and Thursday, from 9:55-11:35 a.m., with a required lab section on Thursday from 1:30-4:30 p.m. As you will see below, I have designed this course so that it does not follow a strict “lecture/lab” format. Rather, we will do lab-like work interspersed with lecture throughout the entire schedule. Instructor Information Dr. Thomas Hickson Office: OSS 117 Ph.D., 1999, Stanford University Phone: 651-962-5241 e-mail: [email protected] Office hours: Greetings! Pretty much all of you have had a class from me at one time or another. You are about to enter the class that I care about the most, Sedimentology and Stratigraphy. I am a sedimentologist by training. I spent at least eight years of my life doing research in this field—as part of a PhD and as a post-doctoral researcher at the U of M—and I continue this work to today. I have taught the course twice before, in a pretty standard format. I lectured. You did labs. We went on field trips. I hoped that, in the end, you’d see how it all hung together in this great, organic whole. Unfortunately, this last step never really seemed to happen. As a result, I took a large chunk of the summer (of ’03) and worked toward redesigning this course. I went to an National Science Foundation/ National Association of Geoscience Teachers workshop at Hamilton College (in New York) entitled “Designing effective and innovative courses in the geosciences” specifically to work on this course. -
Geological Evolution of the Red Sea: Historical Background, Review and Synthesis
See discussions, stats, and author profiles for this publication at: https://www.researchgate.net/publication/277310102 Geological Evolution of the Red Sea: Historical Background, Review and Synthesis Chapter · January 2015 DOI: 10.1007/978-3-662-45201-1_3 CITATIONS READS 6 911 1 author: William Bosworth Apache Egypt Companies 70 PUBLICATIONS 2,954 CITATIONS SEE PROFILE Some of the authors of this publication are also working on these related projects: Near and Middle East and Eastern Africa: Tectonics, geodynamics, satellite gravimetry, magnetic (airborne and satellite), paleomagnetic reconstructions, thermics, seismics, seismology, 3D gravity- magnetic field modeling, GPS, different transformations and filtering, advanced integrated examination. View project Neotectonics of the Red Sea rift system View project All content following this page was uploaded by William Bosworth on 28 May 2015. The user has requested enhancement of the downloaded file. All in-text references underlined in blue are added to the original document and are linked to publications on ResearchGate, letting you access and read them immediately. Geological Evolution of the Red Sea: Historical Background, Review, and Synthesis William Bosworth Abstract The Red Sea is part of an extensive rift system that includes from south to north the oceanic Sheba Ridge, the Gulf of Aden, the Afar region, the Red Sea, the Gulf of Aqaba, the Gulf of Suez, and the Cairo basalt province. Historical interest in this area has stemmed from many causes with diverse objectives, but it is best known as a potential model for how continental lithosphere first ruptures and then evolves to oceanic spreading, a key segment of the Wilson cycle and plate tectonics. -
Introduction to Sedimentology
Introduction to Sedimentology Useful for Module 4: Interpreting the past – Sedimentary Environments Geology is often used to reconstruct how the Earth looked in the past. From deserts to deep seas, sedimentology allows us to paint a picture of these past landscapes Sedimentology is the study of the processes of formation, transport, and deposition of material that accumulates as sediment in continental and marine environments. When we examine a sediment there are key textures to look out for to help with our interpretation. N.B. This is a basic guide – remember that lots of factors can affect the texture of a sediment Colour: Black to Dark Grey Green to Light Grey Orange, Red, Purple Indicates organic matter Green suggests glauconite Indicates ferric iron staining Environment: Deep water Environment: Shallow water Environment: Terrestrial Grainsize: We use the Udden-Wentworth scale (measured in Φ) to describe grain size. It grades from clay to conglomerate. Clay Sandstone Conglomerate Indicates: low energy Indicates: Medium energy Indicates: High energy Clast-Matrix Relationships: Matrix-Supported Clast-Supported Conglomerate Conglomerate Clasts do not touch Clasts touch Environment: E.g., Environment: E.g., debris flow River Roundness: Roundness looks at how smooth a clast is used as an indicator of transport distance. The more rounded a clast, the further it has travelled Sub-Rounded Well-Rounded Angular Sub-Angular Rounded Increasing Erosion (time) Sphericity: Sphericity looks at how close a clast is to a perfect sphere. It is a function of lithology and structure. Bladed: Oblate: Prolate: Equant: Sedimentary structures can also tell us a lot about the process of deposition. -
Authigenic Minerals: Sedimentology, (Friends of Marine Geochemistry, Origins, Distribution Authigenesis) and Applications
Proposed IAS Special Publication FROMAGE Authigenic minerals: sedimentology, (FRiends Of Marine geochemistry, origins, distribution AuthiGEnesis) and applications Editors: Ian Jarvis (Kingston University London), Karl Föllmi (University of Neuchâtel), Craig Glenn (University of Hawaii) THIS volume is based on a selection of papers presented at April 2006 IAS-sponsored EGU Session SSP11 Authigenic Minerals, with additional invited submissions. OUTLINE: Authigenic minerals precipitated in situ at, or close to, the sediment/water interface are widespread in the geological record, yet in many cases remarkably little is known about their origin, and exact modern analogues are poorly known or have yet to be identified. Authigenic minerals incorporate a remarkable range of mineral associations, including: Phosphates: phosphate-rich sediments and phosphorites. Clay minerals, zeolites and associated minerals: green clays: verdine, glauconite; palagonite, smectite, phillipsite, barite. Authigenic carbonates: associations with methane and cold seeps; microbial dolomites in lagoonal and oceanic environments. Iron deposits: ferromanganese deposits, iron crusts, iron sulphides (pyrite, marcasite, iron monosulphides), ironstones. Each authigenic mineral suite has its own unique character, but overarching themes include the microbiology of authigenic processes, and linked spatial and temporal variation in authigenic mineral suites. Occurrences of authigenic minerals have applications to sequence stratigraphy and modelling sea-level change, and palaeoenvironmental -
Precambrian Plate Tectonics: Criteria and Evidence
VOL.. 16,16, No.No. 77 A PublicAtioN of the GeoloGicicAl Society of America JulyJuly 20062006 Precambrian Plate Tectonics: Criteria and Evidence Inside: 2006 Medal and Award Recipients, p. 12 2006 GSA Fellows Elected, p. 13 2006 GSA Research Grant Recipients, p. 18 Call for Geological Papers, 2007 Section Meetings, p. 30 Volume 16, Number 7 July 2006 cover: Magnetic anomaly map of part of Western Australia, showing crustal blocks of different age and distinct structural trends, juxtaposed against one another across major structural deformation zones. All of the features on this map are GSA TODAY publishes news and information for more than Precambrian in age and demonstrate that plate tectonics 20,000 GSA members and subscribing libraries. GSA Today was in operation in the Precambrian. Image copyright the lead science articles should present the results of exciting new government of Western Australia. Compiled by Geoscience research or summarize and synthesize important problems Australia, image processing by J. Watt, 2006, Geological or issues, and they must be understandable to all in the earth science community. Submit manuscripts to science Survey of Western Australia. See “Precambrian plate tectonics: editors Keith A. Howard, [email protected], or Gerald M. Criteria and evidence” by Peter A. Cawood, Alfred Kröner, Ross, [email protected]. and Sergei Pisarevsky, p. 4–11. GSA TODAY (ISSN 1052-5173 USPS 0456-530) is published 11 times per year, monthly, with a combined April/May issue, by The Geological Society of America, Inc., with offices at 3300 Penrose Place, Boulder, Colorado. Mailing address: P.O. Box 9140, Boulder, CO 80301-9140, USA. -
Sedimentology, Petrography, and Depositional Environment of Dore
SEDIMENTOLOGY, PETROGRAPHY, AND DEPOSITIONAL ENVIRONMENT OF DORE SEDIMENTS ABOVE THE HELEN-ELEANOR IRON RANGE, WAHA, ONTARIO ' SEDIMENTOLOGY, PETROGRAPHY, AND DEPOSITIONAL ENVIRONMENT OF DORE SEDIMENTS AHOVE THE HELEN-ELEANOR IRON RANGE, WAWA, ONTARIO By KATHRYN L. NEALE Submitted to the Department of Geology in Partial Fulfilment of the Requirements for the Degree Bachelor of Science McMaster University April, 1981 BACHELOR OF SCIENCE (1981) McMASTER UNIVERSITY (Geology) Hamilton, Ontario TITLE: Sedimentology, Petrography, and Depositional Environment of Dore Sediments above the Helen Eleanor Iron Range, Wawa, Ontario AUTHOR: Kathryn L. Neale SUPERVISOR: Dr. R. G. Walker NUMBER OF PAGES: ix, 54 ii ABSTRACT Archean sediments of the Dare group, located in the 1-Jawa green stone belt, were studied. The sediments are stratigraphically above the carbonate facies Helen-Eleanor secti on of the Michipicoten Iron Forma tion. A mafic volcanic unit, 90 m thick, lies between the iron range and the sediments. Four main facies have been i dentified in the first cycle of clastic sedimentation above the maf i c flow rocks. A 170 ro break in stratigraphy separates the volcanics from the first facies. The basal sedimentary facies is an unstratified and poorly sorted granule-cobble conglomerate, 200m thick, interpreted as an alluvial mass flow deposit. Above the conglomerate, there is a 20 m break in the stratigraphic column. The second facies, 220m to 415 m thick, consists of laminated (0.1- 2 em) argillites and siltstones, together with massive, thick bedded (8-10 m) greywackes. The argillites and siltstones are interpre ted as interchannel deposits on an upper submarine fan, and the grey wackes are explained as in-channel turbidity current deposition. -
Sedimentology, Mineralogy, Palynology
Sedimentology, Mineralogy, Palynology, and Depositional History of Some Uppermost Cretaceous and Lowermost Tertiary Rocks along the Utah Book and Roan Cliffs East of the Green ·River U.S. GEOLOGICAL SURVEY BULLETIN 1787-N Chapter N Sedimentology, Mineralogy, Palynology, and Depositional History of Some Uppermost Cretaceous and Lowermost Tertiary Rocks along the Utah Book and Roan Cliffs East of the Green River By KAREN J. FRANCZYK, JANET K. PITMAN, and DOUGlAS J. NICHOLS A multidisciplinary approach to research studies of sedimentary rocks and their constituents and the evolution of sedimentary basins, both ancient and modern l . U.S. GEOLOGICAL SURVEY BULLETIN 1787 ~ EVOLUTION OF SEDIMENTARY BASINS-UINTA AND PICEANCE BASINS ) DEPARTMENT OF THE INTERIOR MANUEL LUJAN, JR., Secretary • U.S. GEOLOGICAL SURVEY Dallas L. Peck, Director Any use of trade, product, or firm names in this publication is for descriptive purposes only and does not imply endorsement by the U.S. Government. UNITED STATES GOVERNMENT PRINTING OFFICE: 1990 For sale by the Books and Open-File Reports Section U.S. Geological Survey Federal Center Box 25425 Denver, CO 80225 Library of Congress Cataloging-In-Publication Data Franczyk, Karen J. Sedimentology, mineralogy, palynology, and depositional history of some uppermost Cretaceous and lowermost Tertiary rocks along the Utah Book and Roan Cliffs east of the Green River I by Karen J. Franczyk, Janet K. Pitman, and Douglas J. Nichols. p. em. - (Evolution of sedimentary basins-Uinta and Piceance Basins : ch. N) (U.S. Geological Survey bulletin; 1787) "A multidisciplinary approach to research studies of sedimentary rocks and their constituents and the evolution of sedimentary basins, both ancient and modem." Includes bibliographical references. -
Deep Groundwater and Potential Subsurface Habitats Beneath an Antarctic Dry Valley
ARTICLE Received 21 May 2014 | Accepted 2 Mar 2015 | Published 28 Apr 2015 DOI: 10.1038/ncomms7831 OPEN Deep groundwater and potential subsurface habitats beneath an Antarctic dry valley J.A. Mikucki1, E. Auken2, S. Tulaczyk3, R.A. Virginia4, C. Schamper5, K.I. Sørensen2, P.T. Doran6, H. Dugan7 & N. Foley3 The occurrence of groundwater in Antarctica, particularly in the ice-free regions and along the coastal margins is poorly understood. Here we use an airborne transient electromagnetic (AEM) sensor to produce extensive imagery of resistivity beneath Taylor Valley. Regional- scale zones of low subsurface resistivity were detected that are inconsistent with the high resistivity of glacier ice or dry permafrost in this region. We interpret these results as an indication that liquid, with sufficiently high solute content, exists at temperatures well below freezing and considered within the range suitable for microbial life. These inferred brines are widespread within permafrost and extend below glaciers and lakes. One system emanates from below Taylor Glacier into Lake Bonney and a second system connects the ocean with the eastern 18 km of the valley. A connection between these two basins was not detected to the depth limitation of the AEM survey (B350 m). 1 Department of Microbiology, University of Tennessee, Knoxville, Tennessee 37996, USA. 2 Department of Geosciences, Aarhus University, Aarhus 8000, Denmark. 3 Department of Earth and Planetary Sciences, University of California, Santa Cruz, California 95064, USA. 4 Environmental Studies Program, Dartmouth College, Hanover, New Hampshire 03755, USA. 5 Sorbonne Universite´s, UPMC Univ Paris 06, CNRS, EPHE, UMR 7619 Metis, 4 place Jussieu, Paris 75252, France. -
Variations in Sedimentology, Mineralogy and Geochemistry on a Turbiditic Continental Margin During an Early Eocene Negative Carbon Isotope Excursion
EGU21-3991, updated on 02 Oct 2021 https://doi.org/10.5194/egusphere-egu21-3991 EGU General Assembly 2021 © Author(s) 2021. This work is distributed under the Creative Commons Attribution 4.0 License. Variations in sedimentology, mineralogy and geochemistry on a turbiditic continental margin during an early Eocene negative carbon isotope excursion Naroa Martínez-Braceras1, Aitor Payros1, Javier Arostegi1, and Jaume Dinarès-Turell2 1University of The Basque Country, Faculty of Science and Technology, Geology, Leioa, Spain ([email protected]) 2Istituto Nazionale di Geofisica e Vulcanologia, Via di Vigna Murata 605, I-00143 Roma, Italy. Expanded deep-marine sedimentary successions were deposited on the North Iberian continental margin in Eocene times. These deposits are well exposed along accessible coastal cliffs of the Biscay province, being of great interest for paleoenvironmental and paleoclimatic studies. This study dealt with the 110 m-thick lower Ypresian (early Eocene) succession from Solondota, which is mainly composed of hemipelagic limestones and marls interspersed with abundant turbidites. Biomagnetostratigraphic and geochemical records allowed correlation of a prominent negative carbon isotope excursion (CIE) with the Ypresian hyperthermal event J, also known as C24n.2rH1. In order to disentangle the environmental evolution of the Solondota turbiditic area during the CIE, high-resolution sedimentological, geochemical (stable isotopes, major, minor and trace elements) and mineralogical (general and clay mineralogy) studies were carried out. The large size of the dataset hindered straightforward identification of relevant variables and interpretation of their relationships. However, a multivariate analysis provided invaluable information about significant trends and variations in the dataset, avoiding empirical or arbitrary selection of representative elements. -
Tectonics and Seismicity of the Southern Washington Cascade Range
Bulletin of the Seismological Society of America, Vol. 86, No. 1A, pp. 1-18, February 1996 Tectonics and Seismicity of the Southern Washington Cascade Range by W. D. Stanley, S. Y. Johnson, A. I. Qamar, C. S. Weaver, and J. M. Williams Abstract Geophysical, geological, and seismicity data are combined to develop a transpressional strain model for the southern Washington Cascades region. We use this model to explain oblique fold and fault systems, transverse faults, and a linear seismic zone just west of Mt. Rainier known as the western Rainier zone. We also attempt to explain a concentration of earthquakes that connects the northwest-trend- ing Mount St. Helens seismic zone to the north-trending western Rainier zone. Our tectonic model illustrates the pervasive effects of accretionary processes, combined with subsequent transpressive forces generated by oblique subduction, on Eocene to present crustal processes, such as seismicity and volcanism. Introduction The southern Washington Cascades contains Mt. Rain- Geology of Western Washington ier, the most massive of the volcanoes in the Cascade Range magmatic arc (Fig. 1). Mr. Rainier is part of the triangle of The Puget Sound region and the western flank of the large stratovolcanoes in southem Washington that includes Cascade Range in southwestern Washington occupy a com- Mount St. Helens and Mt. Adams. Mount St. Helens expe- plex tectonic setting along the margin of two distinct crustal rienced a cataclysmic eruption in 1980 and is apparently blocks. Crust in the eastern block beneath the southwest younger than Mt. Rainier and Mt. Adams, both of which Washington Cascades is composed of Mesozoic and older exhibit more rounded profiles than the pointed, pre-1980 accreted terranes, volcanic arcs, and underplated magmatic Mount St. -
DEPARTMENT of ENVIRONMENTAL ENGINEERING and EARTH SCIENCES Department of Environmental Engineering and Earth Sciences Chairperson: Dr
DEPARTMENT OF ENVIRONMENTAL ENGINEERING AND EARTH SCIENCES Department of Environmental Engineering and Earth Sciences Chairperson: Dr. Marleen Troy Faculty Professors: Murthy, Troy, Whitman Associate Professors: Frederick Assistant Professor: Finkenbinder, Karimi, Karnae Lecturers: Kaster, McMonagle Laboratory Manager: McMonagle Office Assistant: Garrison The Department of Environmental Engineering and Earth Sciences (EEES) offers the following degree programs: the B.S. in Civil Engineering, the B.S. in Environmental Engineering; the B.S. in Environmental Science; the B.S. in Geology; and the B.A. in Earth and Environmental Science. EEES envisions future accreditation of the Civil Engineering program by EAC-ABET. The Environmental Engineering program is accredited by the EAC-ABET. The engineering programs incorporate a strong background in the fundamentals of engineering with a blend of science and advanced engineering courses. The Environmental Science program combines a foundation in the related sciences and primary earth reservoirs (water, land, air, and life) with concentrations in either Earth Science or Biology. The Geology program provides a comprehensive curriculum that includes the fundamentals of geology with courses responsive to the needs of industrial employment sectors. The Geology program meets the academic requirements for Pennsylvania State professional licensure. All EEES programs emphasize the value of integrative learning in the classroom, laboratory and field. Modern laboratories are well-equipped to support a wide range of courses and research experiences. Easy access to exceptional off-campus sites provides training in field methods that augment the curricula. A dedicated computer laboratory for geospatial technology (Geographic Information System, Global Positioning System, Remote Sensing) supports all EEES programs and research/project activities in the science and engineering fields.