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Failures And Remediation Of Rock Slope Stability Problems And Remediation At Earthquakes At Part Of Werka Descent Road West Of Saudi Arabia, Bahaaeldin Sadagah

International Conference on Case Histories in Geotechnical Engineering

Werka descent road lies at western region of Saudi Arabia. It is constructed two years ago harmed due to rainstorm and absence of remedial measures. Werka mountainous road subjected to failures of man-made rock slope faces, and debris flow along both sides of 8-m width road. Intensive geotechnical study includes the RMR and GSI rock masses classifications were applied indicates that the rocks are medium to poor quality. The integrated techniques such as graphical method, modeling, and simulation were utilized to assess rock slope failures and rockfalls by using DIPS, RocFall, RocPlane and Swedge programs, and recommend the remedial measures …

Effect Of The Soil Spatial Variability On The Static And Dynamic Stability Analysis Of A Lebanese Slope, Mansour Neaimeh, Rony Azar, Roni Hmaymes, Georges Nasr, Dalia Youssef Abdel Massih, Jacques Harb, Nancy Salloum, Cécile Cornou, Denis Jongmans

International Conference on Case Histories in Geotechnical Engineering

The accidental topography and heterogeneous Lebanese geology in addition to the active seismicity have initiated the static and dynamic stability analysis of Lebanese slopes. In this paper, the stability of a sandy Lebanese slope situated at Mansourieh near Beirut is investigated using deterministic and probabilistic approaches. The characterization of the variability of the slope soil properties is done based on geological investigation, as well as geophysical (Resistivity and Ambient noise) and geotechnical tests performed on this slope. Three dimensional 3D static deterministic analyses is performed to determine the overall safety factor of the slope and to find the location of …

Over Eight Decades Old “Young” Landslide – A Case Study, Kishor Kumar, P. S. Prasad, Anil Kathait, Indervir Singh

International Conference on Case Histories in Geotechnical Engineering

Shirobagad also named as Kaliasaur Landslide was developed in the year 1920 at kilometer-147 on National Highway – 58 (earlier named as State Highway - 45) at latitude 300 14’ 30” N and longitude780 53’ 57” in Garhwal region of western Himalaya. This landslide has been investigated by a number of organizations in India and a wealth of data has been generated mainly on geological aspects. Central Road Research Institute has also investigated this landslide during 2007-2011 covering geological as well as geotechnical aspects. The study area basically encompasses metavolcanis and variants of quartzite rock (e.g. pink and white quartzite) …

Stabilization And Reinforcement Of Slope With Geogrid: A Case Study, Khashayar Hemmati, Seyed Vahid Masoomi, Javad Nazari Afshar

International Conference on Case Histories in Geotechnical Engineering

This paper presents a case study example of appropriate method selection of stabilization and reinforcement of slope by introducing engineering and economical aspects. Introduced slope is located in science and research campus of Islamic Azad University (IAU) in north of Tehran with height of 4-29 m and length of 370 m. A big building with 9 floors and total area of 70000 square meters is located upper and near edge of slope, so that existence of this building has increased sensitivity of projects design and construction method. Slope is located in vulnerable area with a high risk of seismicity based …

Petrologic And Geochemical Tracers Of Magmatic Movement In Volcanic Arc Systems: Case Studies From The Aleutian Islands And Kamchatka, Russia, Owen Kelly Neill

Geosciences

Mixing, crystallization and degassing commonly affect magmas during storage, ascent and eruption from volcanoes. As these interactions cannot be observed directly, they must be characterized using chemical signatures of volcanic eruptive products. In this dissertation, geochemical tracers of magma mixing, crystallization and degassing were employed to investigate the magmatic systems of Kasatochi Island volcano, central Aleutian Islands, and Bezymianny Volcano, Kamchatka, Russia, in three studies. The purpose of the first study was to characterize eruptive products from the 2008 eruption of Kasatochi Island volcano. This eruption produced pumiceous, medium-K andesite, as well as denser, medium-K basaltic andesite, with variable bulk …

Preliminary Geochemical Assessment Of Limestone Resources And Stone Use At Maya Sites In The Three Rivers Region, Belize

KIP Articles

No abstract provided.

Clustering Revisited: A Spectral Analysis Of Microseismic Events, Deborah Fagan, Kasper Van Wijk, James Rutledge

CGISS Publications and Presentations

Identifying individual subsurface faults in a larger fault system is important to characterize and understand the relationship between microseismicity and subsurface processes. This information can potentially help drive reservoir management and mitigate the risks of natural or induced seismicity. We have evaluated a method of statistically clustering power spectra from microseismic events associated with an enhanced oil recovery operation in southeast Utah. Specifically, we were able to provide a clear distinction within a set of events originally designated in the time domain as a single cluster and to identify evidence of en echelon faulting. Subtle time-domain differences between events were …

Imaging Methods For Understanding And Improving Visual Training In The Geosciences, Brandon May

Theses

Experience in the field is a critical educational component of every student studying geology. However, it is typically difficult to ensure that every student gets the necessary experience because of monetary and scheduling limitations. Thus, we proposed to create a virtual field trip based off of an existing 10-day field trip to California taken as part of an undergraduate geology course at the University of Rochester. To assess the effectiveness of this approach, we also proposed to analyze the learning and observation processes of both students and experts during the real and virtual field trips. At sites intended for inclusion …

In Memorium: Dr. Charles J. Mankin, 1932-2012 Past National Secretary-Treasurer Of Sigma Gamma Epsilon, Kenneth S. Johnson

The Compass: Earth Science Journal of Sigma Gamma Epsilon

No abstract provided.

Neotectonic Evolution Of Grand Canyon : Interaction Between Volcanism, River Incision, Epeirogenic Uplift, And Faulting, Ryan Crow

Earth and Planetary Sciences ETDs

This thesis focuses on the effects of volcanism, river incision, epeirogenic uplift, and faulting on the landscape evolution of the Grand Canyon region. In the first chapter the migration of increasingly asthenospheric basaltic volcanism is used to constrain lithospheric modification of the Colorado Plateau margins. Buoyancy modification of the upper mantle, driven by the upwelling, is a likely driver for recent uplift of the area. In the second chapter, correlation between oversteepened rivers and areas of high-velocity upper mantle is used to show that recent and ongoing mantle-driven uplift is modulating the surface along the western margin of the Colorado …

Water Modeling Technologies: A Key To Unlocking Water Conflict In The Middle East?, Al-Sharif Nasser Bin Nasser

Journal of Contemporary Water Research and Education

Several cases of armed conflict in the Middle East have a root cause in competition over resources, with water being the focus of conflict. Water will increasingly become a critical trigger for future conflict as supplies become scarcer and as population pressures continue to grow. With existing talks between riparian countries surrounding the Jordan River and the Tigris-Euphrates Basins either being absent or ineffective, there is a pressing need to develop a new approach to resolve water issues in the Middle East. In this context, water modeling technologies may offer a new and unique tool for regional discussions.

Spatial And Temporal Evolution Of The Volcanics And Sediments Of The Kenya Rift, Alexandria L. Guth

Dissertations, Master's Theses and Master's Reports - Open

New volumetric and mass flux estimates have been calculated for the Kenya Rift. Spatial and temporal histories for volcanic eruptions, lacustrine deposition, and hominin fossil sites are presented, aided by the compilation of a new digital geologic map. Distribution of volcanism over time indicates several periods of southward expansion followed by relative positional stasis. Volcanism occurs throughout the activated rift length, with no obvious abandonment as the rift system migrated. The main exception is a period of volcanic concentration around 10 Ma, when activity was constrained within 2° of the equator.

Volumes derived from seismic data indicate a total volume …

Amplitude-Versus-Angle Analysis And Wide-Angle-Inversion Of Crosswell Seismic Data In A Carbonate Reservoir, Mohamed S. Ibrahim

Dissertations, Master's Theses and Master's Reports - Open

Crosswell data set contains a range of angles limited only by the geometry of the source and receiver configuration, the separation of the boreholes and the depth to the target. However, the wide angles reflections present in crosswell imaging result in amplitude-versus-angle (AVA) features not usually observed in surface data. These features include reflections from angles that are near critical and beyond critical for many of the interfaces; some of these reflections are visible only for a small range of angles, presumably near their critical angle.

High-resolution crosswell seismic surveys were conducted over a Silurian (Niagaran) reef at two fields …

Ua35/4 2012-2013 Annual Report, Wku International Programs

WKU Administration Documents

2012-2013 report of WKU International Programs & Study Abroad & Global Learning.

What To Do With America's Nuclear Defense Waste: The Hanford Effect, Joseph A. Cohen

Kentucky Journal of Equine, Agriculture, & Natural Resources Law

No abstract provided.

Remapping Nature: Motherhood, Autonomy, And Anti-Mining Activism In Íntag, Ecuador, Ellicott K. Dandy

Honors Theses

This honors thesis explores the social changes that women engaged in anti-mining activism bring to a region in rural Ecuador. I discuss the ways in which they incorporate their activist techniques into everyday life, using their status as mothers to access public discourses of environmentalism, and ultimately rewrite gender roles locally. Framing the mining conflict as a catalyst for social change, I draw parallels between this movement and indigenous politics in Ecuador, propose new interpretations of the mestizo ethnic identity and assimilation in the Spanish Empire, and finally, make the case for a nature-centric cultural analysis in anthropology.

Fluctuations Of Sea Water Temperature Based On Nannofloral Changes During The Middle To Late Miocene, Adana Basin, Turkey, Manolya Sinaci

Turkish Journal of Earth Sciences

Some nannoplankton species are sensitive to water temperatures. While Coccolithus pelagicus and Reticulofenestra gelida indicate cooler water conditions, the genera Discoaster and Sphenolithus and Calcidiscus leptoporus are indicative of warmer water environments. This paper focuses on relative fluctuation of sea water temperatures during the Middle and Late Miocene, emphasised by cold and warm nannofossil changes in abundance in 2 wells. At the A-1 well in the Middle Miocene, the total abundance of cooler water species is 45%, while that of the warmer species is 3%. During the Late Miocene, the total abundance for cooler water species decreases to 34%; in …

Comparative Analyses Of Past Population Dynamics Between Two Subterranean Zokor Species And The Response To Climate Changes, Lizhou Tang, Long Yu, Weidong Lu, Junjie Wang, Mei Ma, Xiaodong Shi, Jiangang Chen, Tongzuo Zhang

Turkish Journal of Zoology

The mitochondrial cytochrome b sequences of 34 haplotypes from 114 individuals of Eospalax baileyi and GenBank data of 40 haplotypes from 121 individuals of Eospalax cansus were used to investigate if the Quaternary glaciations on the Qinghai-Tibetan Plateau (QTP) influenced the distribution and colonisation of these 2 species, and if both species presented congruous past population dynamics. The phylogenetic tree indicated a valid status for the genera Eospalax and Myospalax, and an independent species status for E. baileyi and E. cansus. The demographical population history of E. baileyi showed that the effective population size remained stable between 1.00 and 0.50 …

Drill Hole Data For Coal Beds In The Powder River Basin, Montana And Wyoming, Jon E. Haacke, David C. Scott

United States Geological Survey: Publications

This report by the U.S. Geological Survey (USGS) of the Powder River Basin (PRB) of Montana and Wyoming is part of the U.S. Coal Resources and Reserves Assessment Project. Essential to that project was the creation of a comprehensive drill hole database that was used for coal bed correlation and for coal resource and reserve assessments in the PRB. This drill hole database was assembled using data from the USGS National Coal Resources Data System, several other Federal and State agencies, and selected mining companies. Additionally, USGS personnel manually entered lithologic picks into the database from geophysical logs of coalbed …

Damage Detection And Analysis In Cfrps Using Acoustic Emission Technique, Travis Laron Whitlow

Dissertations

Real time monitoring of damage is an important aspect of life management of critical structures. Acoustic emission (AE) techniques allow for measurement and assessment of damage in real time. Acoustic emission parameters such as signal amplitude and duration were monitored during the loading sequences. Criteria that can indicate the onset of critical damage to the structure were developed. Tracking the damage as it happens gives a better analysis of the failure evolution that will allow for a more accurate determination of structural life. The main challenge is distinguishing between legitimate damage signals and "false positives" which are unrelated to damage …

What Is Known About Species Richness And Distribution On The Outer-Shelf South Texas Banks?, Harriet L. Nash, Sharon J. Furiness, John W. Tunnell Jr.

Gulf and Caribbean Research

The outer-shelf South Texas Banks, also known as the snapper banks, are known by fishermen to be excellent fishing grounds. However, few scientific studies have been conducted to describe the ecology of these uncommon but distinctive habitats. This paper describes results of a literature review and an assessment to determine what is known about the biota of the South Texas Banks and to assist in developing renewed interest and focus on these topographic highs. The outer-shelf South Texas Banks include relict coralgal reefs and relict barrier islands, and we also include data for a nearshore site, which is geographically and …

Tectonosedimentary Development And Palaeoenvironmental Changes In The Acıgöl Shallow-Perennial Playa-Lake Basin, Sw Anatolia, Turkey, Cahi̇t Helvaci, Mehmet Ci̇hat Alçi̇çek, İbrahi̇m Gündoğan, Ünsal Gemi̇ci̇

Turkish Journal of Earth Sciences

The late Cenozoic extensional deformation formed several NE-trending fluvio-lacustrine basins in SW Anatolia, filled by alluvial, fluvial and lacustrine deposits. Among them, the Acıgöl basin , is notable for its tectono-sedimentary development of a prominent shallow-perennial playa-lake setting. The basin initially subsided to receive coarse-clastic alluvial deposits, merging into fluvial systems and central shallow lakes. Subsequent basin deepening with significant sediment supply from surrounding basement horsts caused gradual shrinkage of the relatively small shallow lakes, due to renewed progradation of alluvial fans and they eventually dried out completely. The sedimentation pattern and palaeoenvironmental changes record a constant tectonic, sedimentation, climatic …

Microfacies Correlation Analysis Of The Oligocene-Miocene Asmari Formation, In The Central Part Of The Rag-E-Safid Anticlinal Oil Field, Zagros Basin, South-West Iran, Mahnaz Amirshahkarami

Turkish Journal of Earth Sciences

The Oligocene-Miocene Asmari Formation was deposited in a carbonate ramp setting at the margin of the Zagros Basin in south-western Iran. The subsurface sedimentary successions of the Asmari Formation have been studied using cores from the Rag-e-Safid oil field, in order to determinate their microfacies and sedimentary palaeoenvironments. Based on texture analysis and faunal assemblages, 10 microfacies types have been recognised and interpreted. They indicate different depositional settings: open marine, oolitic and bioclastic shoal, lagoon, tidal flat and beach. The microfacies have been interpreted as indicative of the inner and middle ramp. In accordance with the temporal and spatial correlation …

Paleoseismologic Evidence For Holocene Activity On The Pinto Mountain Fault, Twentynine Palms, California, Ana Maria Cadena

All Master's Theses

Excavations across the Pinto Mountain fault in Twentynine Palms, California exposed faulted strata across a 32-m wide zone. Trench wall exposures revealed clear evidence for five ground-rupturing events during the Holocene, and two additional events in the late Pleistocene. Optically stimulated luminescence ages from alluvial sediments suggest that the most recent event occurred between 1.7-2.9 ka B.P. and the penultimate event between 2.7-4.2 ka B.P.. Prior to the penultimate event, there were five ground-rupturing earthquakes on the eastern Pinto Mountain fault between 3.5-13.6 ka B.P.. The average recurrence interval since 13.3-13.6 ka B.P. is 1510-1680 years, and 1200-1500 years in …

Geophysical Expression Of The Northern Part Of The Mono-Inyo Volcanic Chain, Mono Basin, California, Amanda Mcdonell

Master's Theses

The Mono Domes are located at the northernmost end of the Mono-Inyo volcanic chain just north of the Long Valley Caldera and include more than 30 overlapping domes and coulees that follow an arcuate trend. A shallow basement high, possibly bounded by a fault, as suggested by potential-field models of data collected in Mono Basin, California, may have influenced the geometry and location of the Mono Domes. Over 320 new gravity stations and approximately 297 line-km of ground magnetic data were collected during the summer of 2010 to investigate the subsurface structure of the Mono Basin. Regional gravity data were …

Palaeoecological Analysis Of The Decline In Stromatolite Abundance During The Ordovician Period, Noran Mhm El-Sherif

Browse all Theses and Dissertations

A stromatolite is a laminated benthic microbial deposit. Its uniqueness arises from being present since the Precambrian to the present. Stromatolites recorded a peak time during the Mesoproterozoic, subsequently they witnessed abrupt rises and falls in abundance with the steepest decline in the Ordovician period, from which it never recovered from. There is no consensus yet regarding the reasons behind the decline of stromatolites. Thus the decline of these microbial deposits remains an enigma. Additionally, a literature gap exists regarding the reasons that specifically led to the Ordovician decline. Accordingly, the focus of this literature-based MSc. thesis is to find …

A Structural Analysis Of The El Kasr Structure In The Western Desert Of Egypt, Trevor Charles Ellis

Masters Theses

"The El Kasr structure was studied in order to investigate the origins and evolution of the enigmatic Desert Eyes structures of the Western Desert due to its accessibility and uniqueness among the structures. The El Kasr structure, an elongate structural basin with low limb dips, is unique among the "Desert Eyes" structures in that it: 1) occurs in isolation in otherwise horizontal sedimentary rock, 2) the long dimension of the basin is oriented NNW, 3) it is closely spatially associated with the less common NNW fault zones, and 4) is composite in nature. The structure was investigated using remote sensing …

Wolf Creek Dam: A Case Study Of Foundation Remediation For Dams Built On Karst Foundations, Kyla Justene Erich

Masters Theses

"Wolf Creek Dam was completed in 1952 as a 5,736-foot long and 258-foot high combination embankment-concrete gravity dam. Its storage capacity of 6 million acre feet makes it the ninth largest reservoir in the nation. The dam was built on a heavily karstified limestone foundation and began exhibiting signs of excess foundation seepage in late 1967. This led to extensive corrective work in the 1970s beneath the earthen core of the embankment to reduce underseepage. In 2006 an independent assessment by the Dam Safety Action Classification (DSAC) Peer Review Panel recommended that Wolf Creek Dam exhibited "Urgent and Compelling" foundation …

Intrusive Dike Complexes, Cumulate Cores, And The Extrusive Growth Of Hawaiian Volcanoes, Ashton F. Flinders, Garrett Ito, Michael O. Garcia, John M. Sinton, Jim Kauahikaua, Brian Taylor

Graduate School of Oceanography Faculty Publications

The Hawaiian Islands are the most geologically studied hot‐spot islands in the world yet surprisingly, the only large‐scale compilation of marine and land gravity data is more than 45 years old. Early surveys served as reconnaissance studies only, and detailed analyses of the crustal‐density structure have been limited. Here we present a new chain‐wide gravity compilation that incorporates historical island surveys, recently published work on the islands of Hawai‘i, Kaua‘i, and Ni‘ihau, and >122,000 km of newly compiled marine gravity data. Positive residual gravity anomalies reflect dense intrusive bodies, allowing us to locate current and former volcanic centers, major rift …

Application Of Various Remote Sensing And Aerial Photography Data Sets To Resolve Surface Structure In Areas Of Poor Exposure: Examples From Kamchatka Peninsula, Russia And Katalla Area, Alaska Usa, Sarah Natalie Heinlein

Open Access Theses & Dissertations

For many years now remote sensing data sets and application techniques of these various data have been routinely used in geological studies. Some of these studies are as basic as using Google Earth applications for general reconnaissance to more sophisticated methods for energy exploration or development of active tectonic models for a region. This dissertation presents data from two study areas within the northern pacific region utilizing a number of remote sensing and aerial photography data: 1) Kamchatka Peninsula, Russia, and 2) Katalla area of southern Alaska, USA. The Kamchatka Peninsula, Russia study evaluates surface geomorphology which includes the morphology …