Open Access. Powered by Scholars. Published by Universities.®

Digital Commons Network™

Open Access. Powered by Scholars. Published by Universities.®

2013

Discipline
Institution
Keyword
Publication
Publication Type
File Type

Articles 19651 - 19680 of 20016

Full-Text Articles in Entire DC Network

Study On The Performance Of Tcp Over 10gbps High Speed Networks, Cheng Cui Jan 2013

Study On The Performance Of Tcp Over 10gbps High Speed Networks, Cheng Cui

LSU Doctoral Dissertations

Internet traffic is expected to grow phenomenally over the next five to ten years. To cope with such large traffic volumes, high-speed networks are expected to scale to capacities of terabits-per-second and beyond. Increasing the role of optics for packet forwarding and transmission inside the high-speed networks seems to be the most promising way to accomplish this capacity scaling. Unfortunately, unlike electronic memory, it remains a formidable challenge to build even a few dozen packets of integrated all-optical buffers. On the other hand, many high-speed networks depend on the TCP/IP protocol for reliability which is typically implemented in software and …

Go to article

Model For Acid-Base Chemistry In Nanoparticle Growth (Mabnag), Taina Yli-Juuti, Kelley Barsanti, L. Hildebrandt Ruiz, Antti-Jussi Kieloaho, U. Makkonen, Tuukka Petäjä, Taina Ruuskanen, Markku Kulmala, Ilona Riipinen Jan 2013

Model For Acid-Base Chemistry In Nanoparticle Growth (Mabnag), Taina Yli-Juuti, Kelley Barsanti, L. Hildebrandt Ruiz, Antti-Jussi Kieloaho, U. Makkonen, Tuukka Petäjä, Taina Ruuskanen, Markku Kulmala, Ilona Riipinen

Civil and Environmental Engineering Faculty Publications and Presentations

Climatic effects of newly-formed atmospheric secondary aerosol particles are to a large extent determined by their condensational growth rates. However, all the vapours condensing on atmospheric nanoparticles and growing them to climatically relevant sizes are not identified yet and the effects of particle phase processes on particle growth rates are poorly known. Besides sulfuric acid, organic compounds are known to contribute significantly to atmospheric nanoparticle growth. In this study a particle growth model MABNAG (Model for Acid-Base chemistry in NAnoparticle Growth) was developed to study the effect of salt formation on nanoparticle growth, which has been proposed as a potential …

Go to article

Modeling Foam Delivery Mechanisms In Deep Vadose-Zone Remediation Using Method Of Characteristics (Moc), Alireza Roostapour Jan 2013

Modeling Foam Delivery Mechanisms In Deep Vadose-Zone Remediation Using Method Of Characteristics (Moc), Alireza Roostapour

LSU Doctoral Dissertations

This study investigates foam delivery mechanisms in vadose-zone remediation by using Method of Characteristics (MoC). In such applications, dry foams are introduced into a porous medium which is initially at low saturation of water (Sw) containing pollutants such as metals and radionuclides. For vadose-zone remediation processes to be successful, the injected aqueous phase should carry chemicals to react with pollutants and precipitate them for immobilization and stabilization purposes. Typical remediation techniques such as water and surfactant injections are not applicable, because of the concerns about downward migration. As a result, understanding foam flow mechanism in-situ is key to the optimal …

Go to article

Detection Of Microorganisms Using Maldi And Ion Mobility Mass Spectrometry, Juaneka Monet Hayes Jan 2013

Detection Of Microorganisms Using Maldi And Ion Mobility Mass Spectrometry, Juaneka Monet Hayes

LSU Doctoral Dissertations

Matrix-assisted laser ablation desorption ionization MALDI and ion mobility (IM) MALDI mass spectrometry (MS) were used for the detection and identification of microorganisms. MALDI MS is an analytical tool that separates ions by their mass-to-charge ratio (m/z) and is routinely used for bioanalysis because of its sensitivity, selectivity, general applicability, and tolerance to impurities. Ion mobility is a gas phase technique that separates ions based on their charge and collision cross-section. In this research, MALDI-TOF MS and MALDI-IM-TOF MS analysis were conducted in parallel to assess the effectiveness of MALDI-IM-TOF MS for microorganism identification. Whole cell bacteria Escherichia coli strain …

Go to article

Analysis And Optimization Of Film Cooling Effectiveness, Hessam Babaee Jan 2013

Analysis And Optimization Of Film Cooling Effectiveness, Hessam Babaee

LSU Doctoral Dissertations

In the first part, an optimization strategy is described that combines high-fidelity simu- lations with response surface construction, and is applied to pulsed film cooling for turbine blades. The response surface is constructed for the film cooling effectiveness as a function of duty cycle, in the range of DC between 0.05 and 1, and pulsation frequency St in the range of 0.2-2, using a pseudo-spectral projection method. The jet is fully modulated and the blowing ratio, when the jet is on, is 1.5 in all cases. Overall 73 direct numerical sim- ulations (DNS) using spectral element method were performed to …

Go to article

Inductivley Coupled Plasma Optical Emission Spectroscopy Analysis Of Heavy Metal Concentrations In Gulf Menhaden (Brevoortia Patronus) Populations In The Northern Gulf Of Mexico From 2011 To 2012, Hannah Paula Rockett Jan 2013

Inductivley Coupled Plasma Optical Emission Spectroscopy Analysis Of Heavy Metal Concentrations In Gulf Menhaden (Brevoortia Patronus) Populations In The Northern Gulf Of Mexico From 2011 To 2012, Hannah Paula Rockett

LSU Master's Theses

In 2010, the Deepwater Horizon (DWH) oil spill, released 4.9 million barrels of oil into the Gulf of Mexico, creating the largest marine oil spill in the history of the U.S. petroleum industry. Trace metals, including those from crude oil, were dispersed in the water column and bound to suspended particulates. As obligate filter-feeding omnivores and a predominate fishery in the Gulf of Mexico, Gulf menhaden (Brevoortia patronus) are susceptible to trace metal accumulation. Samples of menhaden were collected at two locations in coastal Louisiana, Grand Isle (GI) and Vermillion Bay (VB), with VB serving as the non-impacted DWH oil …

Go to article

Toward A Redefinition Of Musical Learning In The Saxophone Studios Of Argentina, Mauricio Gabriel Aguero Jan 2013

Toward A Redefinition Of Musical Learning In The Saxophone Studios Of Argentina, Mauricio Gabriel Aguero

LSU Doctoral Dissertations

The academic teaching of saxophone in Argentina is a recent activity compared with the teaching of others instruments. The curricula have been modeled in European schools, covering exclusively classical music and, therefore, setting aside the particularities Argentine society express through its own music. Composers have written several works for saxophone including local elements, such as folkloric rhythms and tango language; but the students in the academy are not able to learn them in a methodical manner. The aim of this research is to bring to the surface the gap between what is taught in the saxophone classrooms and what the …

Go to article

An Evaluation Of Oyster Stocks, Grow-Out Conditions, And Off-Bottom Culture Methods For Increasing Commercial Production Of Eastern Oysters (Crassostrea Virginica) In The Northern Gulf Of Mexico, Justin Morgan Leonhardt Jan 2013

An Evaluation Of Oyster Stocks, Grow-Out Conditions, And Off-Bottom Culture Methods For Increasing Commercial Production Of Eastern Oysters (Crassostrea Virginica) In The Northern Gulf Of Mexico, Justin Morgan Leonhardt

LSU Master's Theses

This project examined the ecologically and economically valuable eastern oyster (Crassotrea virginica) in Louisiana with two field experiments. Little information has been gathered on the performance of local Louisiana oyster stocks and no study has focused on a comparison of stocks among variable estuarine conditions. Additionally, the use of alternative grow-out methods and intensive cage aquaculture has never been evaluated in Louisiana. For the first study, a dermo-resistant stock of oysters (LSU-OYS: ‘OBOY’) was compared to three wild oyster stocks along a salinity gradient. The objectives of this study were to determine the optimal oyster stock(s) and the ideal grow-out …

Go to article

Controls On The Composition Of Saline Formation Waters From Coastal And Offshore Louisiana, Marielle Elaine Ausburn Jan 2013

Controls On The Composition Of Saline Formation Waters From Coastal And Offshore Louisiana, Marielle Elaine Ausburn

LSU Master's Theses

Geothermal energy is a renewable energy source that can contribute to the U.S. energy mix. As such, new technologies are being explored for lower temperature systems which would open new areas for exploration in Louisiana. Unlike concepts proposed in the early 1980s, in which heat would have been extracted at the land surface from produced overpressured waters, methods currently being proposed would involve engineered down-hole heat exchangers with zero-mass-fluid withdrawal. A re-examination has been made of the controls on the composition of formation waters in south central and offshore Louisiana in the context of providing insight into water-rock reactions that …

Go to article

Depositional History Of The Trinity-Tiger Shoals Region : A Transgressed Delta Complex Of The Middle Holocene Mississippi Delta, Clint Hoyt Edrington Jan 2013

Depositional History Of The Trinity-Tiger Shoals Region : A Transgressed Delta Complex Of The Middle Holocene Mississippi Delta, Clint Hoyt Edrington

LSU Doctoral Dissertations

The Holocene Mississippi River Delta is arguably the world’s most thoroughly researched deltaic system. However, much of this research has occurred predominantly within the present-day subaerial delta, whereas comparatively little research has been attempted downdip within the offshore, more difficult-to-reach parts. This study advances our understanding of the Holocene delta by examining deltaic sediments within the Trinity-Tiger Shoals Complex region, located ~ 30 – 40 km offshore of central Louisiana. Specifically, this study addresses two questions. Which delta complex prograded into this offshore region? Do the overlying transgressive deposits reflect that predicted by the prevailing transgressive depositional systems model? To …

Go to article

Using Formative Assessment To Enhance Student Performance On Geometric Proof Writing, Benjamin Hargrave Jan 2013

Using Formative Assessment To Enhance Student Performance On Geometric Proof Writing, Benjamin Hargrave

LSU Master's Theses

The purpose of this research is to uncover best practices to create competent proof writers. Studies have shown the best setting to do this is in the high school geometry classroom. Throughout a yearlong study of geometry, students were exposed to theorems and their demonstrations. Despite constant exposure, students were still unable to produce their own proof of propositions. The questions then became how can an educator provide critical feedback that encourages student reasoning and develops logical argumentation skills? With the goal in mind, twenty-five students enrolled in a geometry course at Baton Rouge High School in Baton Rouge, Louisiana …

Go to article

Using A Multi-Level Model To Examine The Fidelity Of Implementation Of School-Wide Positive Behavior Intervention Support And Its Relationship To Academic Achievement In Louisiana, Michelle Farnsworth Botos Jan 2013

Using A Multi-Level Model To Examine The Fidelity Of Implementation Of School-Wide Positive Behavior Intervention Support And Its Relationship To Academic Achievement In Louisiana, Michelle Farnsworth Botos

LSU Doctoral Dissertations

This study is to examine if implementation of the universal level of PBS is related to student achievement on the LEAP and iLEAP examinations administered as part of the Louisiana Educational Assessment Program. A second purpose is to examine whether identified student/ school characteristics contribute to any difference in academic performance. To address this question, it is necessary to take into consideration individual as well as school level factors that may act to facilitate or impede student achievement. Multilevel statistical models are ideally suited for research problems of this nature and will be the approach taken for this study. The …

Go to article

The Diagnosis Of Well Control Complications During Managed Pressure Drilling, Brian Piccolo Jan 2013

The Diagnosis Of Well Control Complications During Managed Pressure Drilling, Brian Piccolo

LSU Master's Theses

The constant bottom-hole pressure method of managed pressure drilling is generally expected to reduce well control risks and apply well understood concepts when a kick is taken. Nevertheless, complications, such as operator error, leaks, plugging, equipment failures, and exceeding kick tolerance, can occur during kick circulation. By not properly interpreting the symptoms of a complication, a driller risks the consequences of additional influx, lost circulation or the simultaneous occurrence of both. To address the challenge of diagnosing complications, the implied pit gain (IPG) method is being evaluated as an enhancement to established industry practices. Traditional diagnostic methods attempt to match …

Go to article

Molecular Phylogenetics Of The North American Snake Tribe Thamnophiini, John David Mcvay Jan 2013

Molecular Phylogenetics Of The North American Snake Tribe Thamnophiini, John David Mcvay

LSU Doctoral Dissertations

Advancements in phylogenetic theory and methodology coupled with improvements in computational and sequencing technology facilitate study of the divergence and diversification patterns of life. I apply our current understanding to further explore the relationships and evolution of the North American snake tribe Thamnophiini, as well as to address current topics in phylogenetic and taxonomic methodology. There are two paradigms for the phylogenetic analysis of multi-locus sequence data: one which forces all genes to share the same underlying history, and another that allows genes to follow idiosyncratic patterns of descent from ancestral alleles. The first of these approaches (concatenation) is a …

Go to article

Consumer's Preferences For Goat Meat In The United States : An Application Of Choice-Based Conjoint Analysis, Jessica Irene Hill Jan 2013

Consumer's Preferences For Goat Meat In The United States : An Application Of Choice-Based Conjoint Analysis, Jessica Irene Hill

LSU Doctoral Dissertations

The meat goat industry is one of the fastest growing agricultural sectors in the United States. However, there has been limited research on consumers’ preferences for goat meat; therefore, a choice experiment was used to assess consumer preferences for goat meat and/or live goats. A national online survey was conducted from April 27, 2012 to May 4, 2012. Respondents were asked to complete either the goat meat choice experiment, live goat choice experiment or both. In addition to the choice experiment, respondents answered a set of questions about goat meat consumption and purchasing behavior as well as demographics. The attributes …

Go to article

Design, Synthesis, And Characterization Of Porphyrin Derivatives For Biological Applications, Raja Gabadage Waruna Eranga Jinadasa Jan 2013

Design, Synthesis, And Characterization Of Porphyrin Derivatives For Biological Applications, Raja Gabadage Waruna Eranga Jinadasa

LSU Doctoral Dissertations

Chapter 1 of this Dissertation presents a brief introduction to the basic properties of porphyrins and their derivatives (hydroporphyrins), their abundance and functions in the nature, and their applications in photodynamic therapy. Chapter 2 reports the synthesis, characterization, conformational analysis and cellular studies of novel mono conjugated regioisomers of chlorin e6 derivatives that are promising photosensitizers for photodynamic therapy. All three regioisomers were synthesized from pheophytin a, which was extracted from the alga Spirulina pacifica. In vitro investigations using human carcinoma HEp2 cells show that the 152-lysyl regioisomers accumulate the most within cells, and the most phototoxic …

Go to article

Modeling, Simulation And Analysis Of Renewable Energy Production Systems: Application To Multi-Product Biorefineries, Aryan Geraili Nejadfomeshi Jan 2013

Modeling, Simulation And Analysis Of Renewable Energy Production Systems: Application To Multi-Product Biorefineries, Aryan Geraili Nejadfomeshi

LSU Master's Theses

The primary purpose of this research is to investigate the design and modelling of fully integrated processes which utilize renewable feedstock as raw materials and evaluate the alternative technology and possible process integration options for biorefinery processes to select the optimal configuration based on the production yields and economical profit criteria. The case study considered in this work is a lignocellulosic biorefinery plant which has different technology choices for each section of the process and the ability to produce multi-products from lignocellulosic raw materials. We analyzed different scenarios by simulating the superstructures in Aspen Plus. To incorporate more non-linarites in …

Go to article

Climate Action Progress, 2013, Campus Sustainability Office Jan 2013

Climate Action Progress, 2013, Campus Sustainability Office

Campus Sustainability Office Publications, Reports and Presentations

In 2010, Portland State University (PSU) adopted the University’s first Climate Action Plan (CAP) as part of the American College and University President’s Climate Commitment (ACUPCC). The CAP calls for climate neutrality by 2040 and identifies emission reduction targets in the following areas: Buildings & Energy, Materials, Travel, Commuting, Education & Research, and EcoDistrict Development. This report serves as an assessment of progress to date and provides: an updated carbon emissions profile, a snapshot of progress on individual actions, a summary of efforts contributing to CAP goals, and suggestions regarding next steps.

Go to article

Large Deviations For Stochastic Navier-Stokes Equations With Nonlinear Viscosities, Ming Tao Jan 2013

Large Deviations For Stochastic Navier-Stokes Equations With Nonlinear Viscosities, Ming Tao

LSU Doctoral Dissertations

In this work, a Wentzell-Freidlin type large deviation principle is established for the two-dimensional stochastic Navier-Stokes equations (SNSE's) with nonlinear viscosities. We fi_x000C_rst prove the existence and uniqueness of solutions to the two-dimensionalstochastic Navier-Stokes equations with nonlinear viscosities using the martingale problem argument and the method of monotonicity. By the results of Varadhan and Bryc, the large deviation principle (LDP) is equivalent to the Laplace-Varadhan principle (LVP) if the underlying space is Polish. Then using the stochastic control and weak convergence approach developed by Budhiraja and Dupuis, the Laplace-Varadhan principle for solutions of stochastic Navier-Stokesequations is obtained in appropriate function …

Go to article

Lost In Translation : Algebraic Modeling In The Middle School Classroom, Danielle Denise Ricks Jan 2013

Lost In Translation : Algebraic Modeling In The Middle School Classroom, Danielle Denise Ricks

LSU Master's Theses

This study was conducted to investigate the disparity that seems to exist in students’ abilities to solve equations, solve word problems, and model word problems with algebraic equations. Over the course of fourteen-weeks, students enrolled in an advanced seventh grade mathematics course were given a series of algebra assignments, tasks, and surveys that focused on students’ abilities to solve and write algebraic equations. The results show that students are more competent in determining solutions for equations and simple word problems than modeling word problems with algebraic equations. Students were willing to exert substantial effort to use arithmetic procedures to find …

Go to article

Topology And Shape Optimization Of Hydrodynamically–Lubricated Bearings For Enhanced Load-Carrying Capacity, Mohammad Fesanghary Jan 2013

Topology And Shape Optimization Of Hydrodynamically–Lubricated Bearings For Enhanced Load-Carrying Capacity, Mohammad Fesanghary

LSU Doctoral Dissertations

Bearings are basic and essential components of nearly all machinery. They must be designed to work under different loads, speeds, and environments. Of all the performance parameters, load-carrying capacity (LCC) is often the most crucial design constraint. The objective of this research is to investigate different design methodologies that significantly improve the LCC of liquid-lubricated bearings. This goal can be achieved by either altering the surface texture or the bearing geometrical configuration. The methodology used here is based on mathematical topological/shape optimization algorithms. These methods can effectively improve the design performance while avoiding time-consuming trial-and-error design techniques. The first category …

Go to article

Examining Self-Efficacy Of Preservice Elementary Teachers With Regard To The Next Generation Science Standards, Jennifer Noiva Jan 2013

Examining Self-Efficacy Of Preservice Elementary Teachers With Regard To The Next Generation Science Standards, Jennifer Noiva

Undergraduate Theses and Senior Projects

No abstract provided.

Go to article

Community Resilience To Coastal Hazards : An Analysis Of Two Geographical Scales In Louisiana, Chi Li Jan 2013

Community Resilience To Coastal Hazards : An Analysis Of Two Geographical Scales In Louisiana, Chi Li

LSU Master's Theses

Quantifying resilience is difficulties due to the different definitions of resilience, the interchangeable uses with two other terms “vulnerability” and “adaptability”, as well as the lack of consensus on what indicators should be selected to quantifying resilience. This thesis research studied the community resilience in Louisiana by applying the Resilience Inference Measurement (RIM) model at two geographic levels: county level and zip code level. The RIM model accesses resilience by using three dimensions (exposure, damage, and recovery) and two abilities (vulnerability and adaptability). The types of coastal hazards included in this study were: coastal, flooding, hurricane/tropical storm, tornado, and severe …

Go to article

Reverse Engineering Of Legacy Agricultural Phenology Modeling System, Ian Yocum Jan 2013

Reverse Engineering Of Legacy Agricultural Phenology Modeling System, Ian Yocum

Undergraduate Theses and Senior Projects

No abstract provided.

Go to article

Developmental Education Programs : Students' Perceptions Of The Effectiveness At The Community College Level, Thad David Mitchell Jan 2013

Developmental Education Programs : Students' Perceptions Of The Effectiveness At The Community College Level, Thad David Mitchell

LSU Doctoral Dissertations

Developmental education and the surrounding issues of academically underprepared students have been an ongoing source of debate within American higher education. While secondary education systems are frequently blamed for failing to adequately prepare students, community colleges, state colleges, and universities offer developmental programs to aid students in need of remediation in the form of developmental courses. Reading, Math, and English are subjects that are often taught on a developmental level. These courses are designed to provide students with the basic skills needed to be successful in higher education. This research was designed to examine students’ perception of the effectiveness of …

Go to article

An Experimental And Computational Investigation Of Rotating Flexible Shaft System Dynamics In Rotary Drilling Assemblies For Down Hole Drilling Vibration Mitigation, Richard Duff Jan 2013

An Experimental And Computational Investigation Of Rotating Flexible Shaft System Dynamics In Rotary Drilling Assemblies For Down Hole Drilling Vibration Mitigation, Richard Duff

LSU Doctoral Dissertations

Rotary drilling system vibration has long been associated with damaging the bit, the bottom hole assembly (BHA) and drill string. Vibration has been traditionally measured in the bottom hole assembly, and been closely associated with the resonant behaviors.

This research study proposes an improved physical laboratory model to explore the dynamic behaviors associated with vibration. This model includes contact with the borehole wall allowing a range of stabilization geometries while removing bit-formation interaction effects. The results of exercising the model help develop new insights into both vibration measurement diagnostics and mitigation strategy execution.

Presented here is a review of other …

Go to article

Parallel Suffix Tree Construction For Genome Sequence Using Hadoop, Umesh Chandra Satish Jan 2013

Parallel Suffix Tree Construction For Genome Sequence Using Hadoop, Umesh Chandra Satish

LSU Master's Theses

Indexing the genome is the basis for many of the bioinformatics applications. Read mapping (sequence alignment) is one such application to align millions of short reads against reference genome. Several tools like BLAST, SOAP, BOWTIE, Cloudburst, and Rapid Parallel Genome Indexing with MapReduce use indexing technique for aligning short reads. Many of the contemporary alignment techniques are time consuming, memory intensive and cannot be easily scaled to larger genomes. Suffix tree is a popular data structure which can be used to overcome the demerits of other alignment techniques. However, constructing the suffix tree is highly memory intensive and time consuming. …

Go to article

Single-Crystal Metal Oxides And Supported Metal Nanoclusters As Model Catalyst Sytems, Matthew C. Patterson Jan 2013

Single-Crystal Metal Oxides And Supported Metal Nanoclusters As Model Catalyst Sytems, Matthew C. Patterson

LSU Doctoral Dissertations

We have investigated the morphology and electronic structure of two basic classes of systems: metal oxide surfaces that catalyze the formation of environmentally persistent free radicals (EPFRs) from aromatic precursors, and Au and Cu nanoparticles that may be suitable catalysts for the catalytic oxidation of CO or hydrogenation of CO2. First, we examine the adsorption behavior of phenol on rutile TiO2(110) and ultrathin films of alumina prepared on a NiAl(110) substrate. Electron paramagnetic resonance studies show that exposure of both γ-alumina and titania powder to phenol at 250°C results in the formation of persistent phenoxyl radicals. EELS studies of phenol …

Go to article

Spectral Breast Ct : Effect Of Adaptive Filtration On Ct Numbers, Ct Noise, And Ct Dose, Justin Silkwood Jan 2013

Spectral Breast Ct : Effect Of Adaptive Filtration On Ct Numbers, Ct Noise, And Ct Dose, Justin Silkwood

LSU Master's Theses

Purpose: Adaptive filtration facilitates spectral breast CT by decreasing count rate and dynamic range requirements of photon counting detectors. This project investigated the effect of adaptive filtration on beam hardening, CT numbers, noise, and dose in dedicated breast CT. Methods: Adaptive filters were simulated to provide a flat fluence at the detector surface when used with a 14 cm breast phantom at 120 kVp. Beam hardening with each filter type was measured against increasing x-ray beam half-fan angle.. Breast CT images were simulated with and without an adaptive filter in the beam at multiple tube voltages. CT number, noise, and …

Go to article

High Resolution Tephra And U/Pb Chronology Of The 3.33 – 3.26 Ga Mendon Formation, Barberton, Greenstone Belt, South Africa, Nicholas Burns Decker Jan 2013

High Resolution Tephra And U/Pb Chronology Of The 3.33 – 3.26 Ga Mendon Formation, Barberton, Greenstone Belt, South Africa, Nicholas Burns Decker

LSU Master's Theses

The Mendon Formation in the Barberton Greenstone Belt of South Africa marks the boundary between the Onverwacht and Fig Tree Groups. These groups are characterized by mafic to ultramafic volcanism and felsic volcanism with related epiclastic sedimentation, respectively. This transition marks the end of komatiitic volcanism in the Barberton Greenstone Belt and is accompanied by numerous impact-related spherule layers. This study characterizes the upper Mendon Formation texturally and geochemically over a wide areal extent and across structure and facies change in an attempt to better understand the evolution of tectonic processes at this boundary. A suite of whole rock and …

Go to article

First Prev Next Last