Relevant bibliographies by topics / Mass-mapping

Academic literature on the topic 'Mass-mapping'

Author: Grafiati
Published: 8 June 2024

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Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Journal articles on the topic "Mass-mapping":

1

Opuni, Kwabena F. M., Mahmoud Al-Majdoub, Yelena Yefremova, Reham F. El-Kased, Cornelia Koy, and Michael O. Glocker. "Mass spectrometric epitope mapping." Mass Spectrometry Reviews 37, no. 2 (July 12, 2016): 229–41. http://dx.doi.org/10.1002/mas.21516.

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Mendonça, Carlos A., and Carlos A. M. Chaves. "Mass-constrained basin basement mapping." GEOPHYSICS 86, no. 3 (April 21, 2021): G13—G21. http://dx.doi.org/10.1190/geo2020-0184.1.

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The irregular interface model setting side by side two dense homogeneous media has found many applications in gravity-data exploration such as for petroleum and gas in sedimentary basins, groundwater resources in buried paleochannels, characterization of abandoned landfills, and variable regolith-depth mapping. Despite its simplicity and wide range of applicability, the determination of the interface position from inverting surface gravity data configures an ill-posed problem requiring specialized regularizing procedures to produce reliable results. Common approaches to obtain stable and reliable solutions require a judicious choice of regularizing functionals, each of them able to convey a desired geologic attribute that the unknown interface is expected to feature. In assuming a style that the unknown interface may have, a mathematical procedure is elected to convey such an attribute when the interface is mapped from gravity data inversion. We have developed a different approach to the interface mapping problem by imposing a common constraint that all model solutions must have, meanwhile preventing oscillations for the interface to be mapped. As a constraint that the solutions must have, we fix the volume or the cross section for 2D structures that the anomalous density structure has. This volume (or 2D cross section) is determined by applying the mass excess theorem to the measured gravity data and assuming as known the density contrast caused by the two media paired by the interface. We find that this simple formulation for the interface-mapping problem is effective in imaging a variety of basin styles without introducing specific information about the interface attributes. Our technique is applied to invert previously published gravity data in cases with good drillhole control or with a known interface.
3

ROESLI, C., G. ELIA, and D. NERI. "Two-dimensional mass spectrometric mapping." Current Opinion in Chemical Biology 10, no. 1 (February 2006): 35–41. http://dx.doi.org/10.1016/j.cbpa.2005.12.017.

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Fiedorowicz, Pier, Eduardo Rozo, Supranta S. Boruah, Chihway Chang, and Marco Gatti. "KaRMMa – kappa reconstruction for mass mapping." Monthly Notices of the Royal Astronomical Society 512, no. 1 (February 21, 2022): 73–85. http://dx.doi.org/10.1093/mnras/stac468.

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ABSTRACT We present KaRMMa, a novel method for performing mass map reconstruction from weak-lensing surveys. We employ a fully Bayesian approach with a physically motivated lognormal prior to sample from the posterior distribution of convergence maps. We test KaRMMa on a suite of dark matter N-body simulations with simulated DES Y1-like shear observations. We show that KaRMMa outperforms the basic Kaiser–Squires mass map reconstruction in two key ways: (1) our best map point estimate has lower residuals compared to Kaiser–Squires; and (2) unlike the Kaiser–Squires reconstruction, the posterior distribution of KaRMMa maps is nearly unbiased in all summary statistics we considered, namely: one-point and two-point functions, and peak/void counts. In particular, KaRMMa successfully captures the non-Gaussian nature of the distribution of κ values in the simulated maps. We further demonstrate that the KaRMMa posteriors correctly characterize the uncertainty in all summary statistics we considered.
5

Holmes, D. F. "Mass mapping of extracellular matrix assemblies." Biochemical Society Transactions 23, no. 4 (November 1, 1995): 720–25. http://dx.doi.org/10.1042/bst0230720.

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Dominitz, A., and A. Tannenbaum. "Texture Mapping via Optimal Mass Transport." IEEE Transactions on Visualization and Computer Graphics 16, no. 3 (May 2010): 419–33. http://dx.doi.org/10.1109/tvcg.2009.64.

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Zhao, Yingming, and Brian T. Chait. "Protein Epitope Mapping By Mass Spectrometry." Analytical Chemistry 66, no. 21 (November 1994): 3723–26. http://dx.doi.org/10.1021/ac00093a029.

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Guszejnov, Dávid, and Philip F. Hopkins. "Mapping the core mass function to the initial mass function." Monthly Notices of the Royal Astronomical Society 450, no. 4 (May 20, 2015): 4137–49. http://dx.doi.org/10.1093/mnras/stv872.

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Xin Zhao, Zhengyu Su, Xianfeng David Gu, Arie Kaufman, Jian Sun, Jie Gao, and Feng Luo. "Area-Preservation Mapping using Optimal Mass Transport." IEEE Transactions on Visualization and Computer Graphics 19, no. 12 (December 2013): 2838–47. http://dx.doi.org/10.1109/tvcg.2013.135.

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Lu, Xiaojun, Michael R. DeFelippis, and Lihua Huang. "Linear epitope mapping by native mass spectrometry." Analytical Biochemistry 395, no. 1 (December 2009): 100–107. http://dx.doi.org/10.1016/j.ab.2009.08.018.

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You might also be interested in the extended bibliographies on the topic 'Mass-mapping' for particular source types:
Journal articles Dissertations / Theses Books

Dissertations / Theses on the topic "Mass-mapping":

1

Matsumiya, Nozomi. "Optimization of disulfide mapping using mass spectrometry." Thesis, Kansas State University, 2009. http://hdl.handle.net/2097/1358.

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Master of Science
Biochemistry
John Tomich
One of the important keys to characterize the biological function of a protein is the study of post-translational modification (PTM). Formation of disulfide bond linkages between cysteine residues within a protein is a common PTM which not only contributes to folding and stabilizing the protein structure, but also to accomplishing its native function. Therefore, the study and discovery of structural-functional relationships of expressed proteins using an isolated proteomics approach has been one of the biggest advances within the field of structural biology in recent years. In this study, rapid disulfide bond mapping of freshly obtained equine serum albumin (ESA) was performed using matrix assisted laser desorption/ionization time of flight mass spectrometry (MALDI-TOF MS). Highly sensitive MALDI-TOF MS is commonly used for the investigation of disulfide bond linkages in the proteomics field. However, it has also been known that the presence of disulfide bond linkages absorbs the energy which is created by the cysteine-cysteine kinetic vibration, resulting in a decrease of the instrumental sensitivity. To overcome this problem, the disulfide bond mapping method was optimized by applying a combination of chemical labeling, proteolytic enzymes, and matrices. With the optimized method, we were also able to achieve high protein sequence coverage. Obtaining higher sequence coverage of a protein provides more information about a protein which helps to identify the protein by peptide mass fingerprint (PMF) technique. These analyses eventually contribute to the estimation of the possible PTM sites.
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Wetzel, Collin. "Global Identification and Mass Mapping of tRNA Isoacceptors Using Targeted Tandem Mass Spectrometry." University of Cincinnati / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1448037316.

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Comins, Megan. "Systematic errors in black hole mass measurement using reverberation mapping." Connect to resource, 2008. http://hdl.handle.net/1811/32152.

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Flett, Fiona Jane. "Mapping protein-DNA interactions using UV cross-linking and mass spectrometry." Thesis, University of Edinburgh, 2014. http://hdl.handle.net/1842/17996.

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Protein-nucleic acid interactions play essential roles in all living cells in various cellular functions. The study of these interactions can reveal important structural and functional information. UV cross-linking of nucleic acids to proteins in combination with mass spectrometry is a powerful technique to identify proteins, peptides and the amino acids involved in intermolecular interactions within nucleic acid-protein complexes. However, the mass spectrometric identification of cross-linked nucleic acid-protein heteroconjugates in complex mixtures and MS/MS characterisation of the specific sites of cross-linking is a challenging task. In this investigation, novel tools and methods have been developed for the investigation of DNA-protein interactions using UV cross-linking and mass spectrometry. These tools were developed towards their application for the characterisation of the complex between the eukaryotic DNA repair protein Tyrosyl-DNA phosphodiesterase 1 (Tdp1) and its DNA substrates. DNA-Tdp1 UV cross-linking was optimised using purified recombinant human Tdp1 and radioactively labelled DNA oligonucleotides containing UV photoactivatable 4- thio-thymidine or 5-iodouracil. Tdp1-DNA heteroconjugates were detected by SDS PAGE and Phosphorimaging. In order to analyse the DNA-Tdp1 heteroconjugates by mass spectrometry, they must first be enriched and hydrolysed by a protease and a nuclease. Here, a novel sample preparation protocol was developed for the enrichment of Tdp1 oligonucleotide-peptide heteroconjugates. Detection and analysis of oligonucleotide-peptide heteroconjugates using mass spectrometry is a challenging task. As a tool to optimise the various parameters involved, a synthetic DNA oligonucleotide-peptide heteroconjugate was constructed using click chemistry. RP-HPLC/ESI-FT-ICR-MS on a Bruker 12T SolariX in conjunction with CID fragmentation was used to unambiguously identify the site of the cross-link. Lastly, a novel 18O labeling approach was introduced to facilitate the identification of DNA-protein cross-links. This approach was shown to be suitable for the labeling of heteroconjugate species by testing it with the click heteroconjugate.
5

Cao, Xiaoyu. "Mass Exclusion list for RNA modification mapping using LC-MS/MS." University of Cincinnati / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1495807992024166.

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Gatti, Marco. "Weak lensing in DES Y3: redshift distributions, shape catalogue, and mass mapping." Doctoral thesis, Universitat Autònoma de Barcelona, 2020. http://hdl.handle.net/10803/670527.

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En aquesta tesi hem tractat alguns aspectes clau de les lents dèbils gravitacionals en el context d’enquestes fotomètriques. En particular, es van utilitzar simulacions i dades preses durant els primers tres anys d’observacions de l’enquesta de l’energia fosca (DES Y3). Les programacions de DES estan publicades a finals d’aquest any amb les principals anàlisis cosmològiques de DES Y3 i aquesta tesi abasta algunes de les anàlisis. A la part II d’aquesta tesi, ens hem centrat en la tècnica de “clustering-redshift” i el seu part en la principal estratègia de calibració de redshift DES Y3. Clustering-redshift és un mètode per obtenir (o calibrar) distribucions redshift que es basa en correlacions creuades amb mostres petites amb redshift segurs. La part III es va dedicar a la prova del catàleg oficial de formes DES Y3, que abasta ~ 4143 dòlars ^ 2 de l’hemisferi sud i que comprèn ~ 100 milions de galàxies, cosa que el converteix efectivament en el catàleg de formes més gran mai creat. A la darrera part de la tesi (capítols 6 i 7), es van presentar els mapes de massa de lents febles amb lents febles DES Y3 i es va discutir una possible aplicació cosmològica dels mapes. En particular, vam introduir al capítol 6 quatre tècniques de reconstrucció massiva de mapes massius diferents, cadascuna d’elles que assumeixen diferents nivells en el camp de convergència recuperat. El capítol 7 presentava una anàlisi de cosmologia simulada utilitzant el segon i el tercer moment dels mapes de massa de lent feble, dirigits a les dades de DES Y3.
En esta tesis hemos estudiado algunos aspectos clave de la lente gravitacional débil en el contexto de los estudios fotométricos. En particular, utilizamos simulaciones y datos tomados durante los primeros tres años de observaciones de la Dark Energy Survey (DES Y3). DES está programado para lanzar su análisis cosmológico principal DES Y3 más adelante este año, y esta tesis cubre algunas partes del análisis. En la Parte II de esta tesis, nos hemos centrado en la técnica de “clustering redshift’’ y su parte en la estrategia principal de calibración del desplazamiento al rojo de DES Y3. El clustering redshift es un método para obtener (o calibrar) distribuciones de desplazamiento al rojo que se basa en correlaciones cruzadas con muestras pequeñas con desplazamiento al rojo seguro. La Parte III se dedicó a la prueba del catálogo oficial de formas de lente gravitacionales de DES Y3, que abarca ~ 4143 $ deg ^ 2 del hemisferio sur y comprende ~ 100 millones de galaxias, lo que lo convierte en el catálogo de formas más grande jamás creado. En la última parte de la tesis (Capítulo 6 y 7), presentamos los mapas oficiales de masa de lentes débiles de DES Y3, y discutimos una posible aplicación cosmológica de los mapas. En particular, introdujimos en el Capítulo 6 cuatro técnicas diferentes de reconstrucción de mapas de masas, cada una de las cuales asumió diferentes antecedentes en el campo de convergencia recuperado. El Capítulo 7 presentó un análisis de cosmología simulada utilizando el segundo y el tercer momento de los mapas de masas de lentes débiles, dirigidos a los datos DES Y3.
In this thesis we have addressed some key aspects of gravitational weak lensing in the context of photometric surveys. In particular, we used simulations and data taken during the first three years of observations of the Dark Energy Survey (DES Y3). DES is scheduled to release their main DES Y3 cosmological analysis later this year, and this thesis covers some parts of the analysis. In Part II of this thesis, we have focused on the “clustering-redshift’’ technique and its role in the main DES Y3 redshift calibration strategy. Clustering-redshift is a method to obtain (or calibrate) redshift distributions which is based on cross-correlations with small samples with secure redshifts. Part III was devoted to the testing of the official DES Y3 shape catalogue, covering ~ 4143$ deg^2 of the southern hemisphere and comprising ~100 million galaxies, which effectively makes it the largest shape catalogue ever created. In the last part of the thesis (Chapter 6 & 7), we presented the official DES Y3 weak lensing mass maps, and discussed a potential cosmological application of the maps. In particular, we introduced in Chapter 6 four different mass map reconstruction techniques, each of those assuming different priors on the recovered convergence field. Chapter 7 presented a simulated cosmology analysis using the second and third moments of the weak lensing mass maps, targeted at the DES Y3 data.
7

Beasley, Emma. "Detection and mapping of cannabis use in hair samples using mass spectrometry." Thesis, Sheffield Hallam University, 2018. http://shura.shu.ac.uk/24067/.

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Hair differs from other human materials used for toxicological analysis, such as blood or urine, because of its substantially longer window of detection (months to years) enabling retrospective investigations of drug consumption. Due to its solid and durable nature, hair may be analysed centuries after growth with little degradation. Other advantages of hair analysis include the non-invasiveness of its collection, which is of particular importance in infant/child investigations and the ease of sample storage. Although hair analysis offers the potential to reveal information which is not possible with other biological matrices, it also suffers from some unique limitations that can make interpretation of findings challenging. These are largely due to exposure of hair to the environment before analysis can take place. Current analytical techniques allow detection and quantification of cannabinoids in hair samples. Frequently used techniques include gas chromatography mass spectrometry and liquid chromatography mass spectrometry. The majority of studies exclusively analyse the natural products Δ9-tetrahydrocannabinol (THC), Cannabinol (CBN), cannabidiol (CBD) or the metabolite 11-nor-9-carboxy-tetrahydrocannabinol (THC-COOH). In this thesis THC, CBD, CBN, THC-COOH and the additional metabolite 11-Hydroxydelta- 9-tetrahydrocannabinol (11-OH-THC) have been simultaneously detected and quantified in authentic hair samples using a novel atmospheric pressure chemical ionisation method coupled to gas chromatography mass spectrometry. The results of these findings are compared to self-report data and are largely found to be in concordance, with some anomalies. In addition, several strategies to overcome the complication of external contamination of hair samples were trialled and compared to self-report data. In this thesis there is also an investigation presented to demonstrate the in-situ derivatisation of cannabinoids using matrix-assisted laser desorption ionisation (MALDI). This is the first time a hair has been analysed for cannabinoids using MALDI and the first example of in situ derivatisation for hair samples. The addition of an N-methylpyridium group results in improved ionisation efficiency, permitting both detection and mapping of Δ9-tetrahydrocannabinol (THC), Cannabinol (CBN), cannabidiol (CBD) and the metabolites 11-nor-9-carboxy-tetrahydrocannabinol (THC-COOH), 11-Hydroxy-delta-9-tetrahydrocannabinol (11-OH-THC) and 11-nordelta( 9)-carboxy-tetrahydrocannabinol glucuronide (THC-COO-gluc) in single hair samples. Additionally, for the first time an in-source re-arrangement of THC is reported and characterised in this thesis, thus contributing new knowledge in the analysis of this drug by MALDI mass spectrometry.
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Antony, Alfred Vinod. "A New Tool for Rock Mass Discontinuity Mapping from Digital Images: VTtrace." Thesis, Virginia Tech, 2005. http://hdl.handle.net/10919/32075.

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Manual fracture mapping in tunnels, caverns, mines or other underground spaces is a time intensive and sometimes dangerous process. A system that can automate this task could minimize human exposure to rockfalls, rockbursts or instabilities and facilitate the use of new methods of data visualization such as virtual environments. This research was undertaken to develop VTtrace; a semi-automatic fracture mapping algorithm based on image processing and analysis techniques. Images of a rock exposure surface are made using a â prosumerâ grade digital camera. The grayscale images are preprocessed to remove color information and any noise or distortion. The smoothed images are converted into binary images. The binary images are then thinned to extract the fracture map. The fractures are then separated and stored as different images. Fracture properties such as the length, width, orientation and large-scale roughness are determined using photogrammetric techniques. Results from test images shows the VTtrace is effective in extracting rock discontinuity traces. Additional enhancements to the program are proposed to allow feature attributes from the three-dimensional surface to be determined.
Master of Science
9

Quanico, Jusal. "Development of On-Tissue Mass Spectrometric Strategies for Protein Identification, Quantification and Mapping." Thèse, Université de Sherbrooke, 2014. http://hdl.handle.net/11143/5867.

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Résumé : L’imagerie par spectrométrie de masse est une technique sans marquage permettant la détection et la localisation de protéines à partir de coupes de tissus. Afin de répondre à des problématiques biologiques, le nombre de protéines identifiées doit être amélioré. Une stratégie consiste à réaliser une micro-jonction liquide sur des régions particulières des coupes de tissus afin d’extraire les peptides issus de la digestion in situ des protéines. Plus de 1500 protéines ont identifié sur une zone de 650µm, correspondant à environ 1900 cellules. Une corrélation entre ces données avec celles générées par MSI a augmenté le nombre de protéines localisées. Afin d’obtenir dans le même temps, la localisation et l’identification de protéines, une méthode consiste à réaliser la microdissection de l’ensemble de la coupe après l’avoir déposée sur une lame recouverte de prafilm. Parafilm-Assisted Microdissection (PAM) a également été appliquée à l’étude de l'expression différentielle de protéines dans des tumeurs de prostate. Les résultats identifiés glutamate oxaloacétate transférase 2 (GOT2) en tant que biomarqueur de protéine candidate impliquée dans le métabolisme du glucose, en plus de celles qui ont déjà été indiqué précédemment. Réunis ensemble, ces méthodes MS d'analyses directes fournissent un moyen robuste d’étude de protéines dans leur état natif afin de fournir des indications sur leur rôle dans des systèmes biologiques. // Abstract : Mass spectrometry-based methods for direct tissue analysis, such as MS imaging, are label-free techniques that permit the detection and localization of proteins on tissue sections. There is a need to improve the number of protein identifications in these techniques for them to comprehensively address biological questions. One strategy to obtain high protein IDs is to realize liquid microjunction on localized regions of tissue sections to extract peptides from the in situ digestion of proteins. More than 1500 proteins were identified in a 650μm spot, corresponding to about 1900 cells. Matching these IDs with those from MSI increased the number of localized proteins. In order to achieve simultaneous identification and localization of proteins, a method consisting of microdissecting entire tissue sections mounted on parafilmcovered slides was developed. Spectral counting was then used to quantify identified proteins, and the values were used to generate images. Parafilm-Assisted Microdissection (PAM) was also used to examine the differential expression of proteins on prostate tumors. Results identified glutamate oxaloacetate transferase 2 (GOT2) as a candidate protein biomarker involved in glucose metabolism, in addition to those that have already been reported previously. Taken together, these direct MS analysis methods provide a robust means of analyzing proteins in their native state and are expected to provide insights to their role in biological systems.
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Young, Reuben Sam Erskine. "Mapping changes to lipid metabolism within cancer using next-generation mass spectrometry technologies." Thesis, Queensland University of Technology, 2021. https://eprints.qut.edu.au/225933/1/Reuben_Young_Thesis.pdf.

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This thesis developed new methods to probe the molecular structure of lipids (fats) that are key components of cellular membranes. Applications of these technologies led to the discovery of previously undescribed lipids and allowed the mapping of their formation and fate in cancer cells and tissues. These fundamental insights into cancer metabolism suggest new targets for the detection and treatment of cancer.
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Books on the topic "Mass-mapping":

1

Onuch, Olga. Mapping Mass Mobilization. London: Palgrave Macmillan UK, 2014. http://dx.doi.org/10.1057/9781137409775.

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M, Arattano, and European Geophysical Society, eds. Monitoring, modelling and mapping of mass movements. Oxford: Pergamon, 2001.

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M, Arattano, and European Geophysical Society, eds. Monitoring, modelling and mapping of mass movements. Oxford: Pergamon, 2002.

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Mora Chaparro, Juan Carlos. Mapping the Risk of Flood, Mass Movement and Local Subsidence. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-22472-1.

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Binns, Kathleen Leslie. Phosphopeptide mapping of axon guidance molecules by Nano-ESI tandem mass spectrometry. Ottawa: National Library of Canada, 2002.

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Niemann, K. O. Slope stability evaluations using digital terrain models. Victoria, B.C: BC Ministry of Forests, 1992.

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Stephen, Lozano, and Great Lakes Environmental Research Laboratory, eds. Grain size distribution of the surface sediments collected during the Lake Michigan mass balance and environmental mapping and assessment programs. Ann Arbor, Mich: U.S. Dept. of Commerce, National Oceanic and Atmospheric Administration, Environmental Research Laboratories, Great Lakes Environmental Research Laboratory, 1999.

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Moinuddin, Shekh. Mapping media: Political mapping of media space in India. New Delhi: R.K. Books, 2015.

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1940-, Horgan John, O'Connor Barbara M. A, and Sheehan Helena, eds. Mapping Irish media: Critical explorations. Dublin: University College Dublin Press, 2007.

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1951-, Krieger Alex, Cobb David A. 1945-, Turner Amy, and Bosse David C, eds. Mapping Boston. [Cambridge, Mass: MIT Press], 1999.

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Book chapters on the topic "Mass-mapping":

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Onuch, Olga. "Introduction: The Shock and Awe of Moments of Mass Mobilization." In Mapping Mass Mobilization, 3–26. London: Palgrave Macmillan UK, 2014. http://dx.doi.org/10.1057/9781137409775_1.

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Onuch, Olga. "Epilogue: It Happened Again — The 2014 EuroMaidan Mass Mobilization in Ukraine." In Mapping Mass Mobilization, 237–45. London: Palgrave Macmillan UK, 2014. http://dx.doi.org/10.1057/9781137409775_10.

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Onuch, Olga. "Theoretical Framework for Comparative Analysis of Mass Mobilization." In Mapping Mass Mobilization, 27–51. London: Palgrave Macmillan UK, 2014. http://dx.doi.org/10.1057/9781137409775_2.

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Onuch, Olga. "Mapping Moments and Movements in Ukraine and Eastern Europe 1920–2004." In Mapping Mass Mobilization, 55–81. London: Palgrave Macmillan UK, 2014. http://dx.doi.org/10.1057/9781137409775_3.

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Onuch, Olga. "Mapping Moments and Movements in Argentina and Latin America 1920–2001." In Mapping Mass Mobilization, 82–105. London: Palgrave Macmillan UK, 2014. http://dx.doi.org/10.1057/9781137409775_4.

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Onuch, Olga. "Setting Precedents: Medium-term Structural Factors in the Mobilization Process." In Mapping Mass Mobilization, 109–28. London: Palgrave Macmillan UK, 2014. http://dx.doi.org/10.1057/9781137409775_5.

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Onuch, Olga. "Context Is Only Part of the Puzzle: Short-term Structural Factors in the Mass Mobilization Process." In Mapping Mass Mobilization, 129–54. London: Palgrave Macmillan UK, 2014. http://dx.doi.org/10.1057/9781137409775_6.

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Onuch, Olga. "The Activist and Elite Interaction and Information Exchange Game." In Mapping Mass Mobilization, 157–82. London: Palgrave Macmillan UK, 2014. http://dx.doi.org/10.1057/9781137409775_7.

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Onuch, Olga. "The Duty to Protest: Participation of ‘Ordinary’ People in Mass Mobilization." In Mapping Mass Mobilization, 183–211. London: Palgrave Macmillan UK, 2014. http://dx.doi.org/10.1057/9781137409775_8.

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Onuch, Olga. "Conclusions: Understanding Revolutionary Moments and Movements." In Mapping Mass Mobilization, 212–36. London: Palgrave Macmillan UK, 2014. http://dx.doi.org/10.1057/9781137409775_9.

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Conference papers on the topic "Mass-mapping":

1

Kang, Yeonsik, Derek Caveney, and J. Hedrick. "Probabilistic Mapping for UAV with Point-Mass Target Detection." In AIAA Guidance, Navigation, and Control Conference and Exhibit. Reston, Virigina: American Institute of Aeronautics and Astronautics, 2006. http://dx.doi.org/10.2514/6.2006-6244.

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Smith, Kailee, and Jonathan Harvey. "MAPPING MASS WASTING HAZARDS ON ANNETTE ISLAND RESERVE, ALASKA." In Joint 118th Annual Cordilleran/72nd Annual Rocky Mountain Section Meeting - 2022. Geological Society of America, 2022. http://dx.doi.org/10.1130/abs/2022cd-374181.

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Felemban, Emad, Adil Sheikh, and Faisal Shaikh. "MMaPFlow: A Crowd-sourcing based Approach for Mapping Mass Pedestrian Flow." In 11th International Conference on Mobile and Ubiquitous Systems: Computing, Networking and Services. ICST, 2014. http://dx.doi.org/10.4108/icst.mobiquitous.2014.257985.

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Onsel, Emre, Douglas Stead, Wayne Barnett, Luca Zorzi, and A. Shaban. "Innovative mixed reality approach to rock mass mapping in underground mining." In MassMin 2020: Eighth International Conference & Exhibition on Mass Mining. University of Chile, Santiago, 2020. http://dx.doi.org/10.36487/acg_repo/2063_103.

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Bickel, Grant A., and Harry M. Adams. "A Laser Desorption Mass Spectrometer Microprobe for Surface Mapping of Lithium." In Laser Applications to Chemical and Environmental Analysis. Washington, D.C.: Optica Publishing Group, 1998. http://dx.doi.org/10.1364/lacea.1998.ltub.3.

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A laser desorption mass spectrometer microprobe has been utilized to map Li distributions in CANDU® nuclear reactor components. Lithium is present in the Heat Transport System (HTS) of the reactor and can be used as a tracer of HTS leakage. Leakage (in the form of both liquid D2O and steam) into component crevices, introduces uncontrolled and unknown chemistry within the crevices. One such area is the rolled joint, where the zirconium pressure tube is rolled into the stainless steel end fitting hub. HTS leakage, occurring through cracks and crevices under the rolled joint, may lead to deuterium ingress into the Zr pressure tube and subsequently to pressure tube embrittlement. It is hoped that the results from the laser desorption microprobe, can be used to correlate the HTS leakage through the cracks and crevices under the rolled joint with the deuterium profile in the pressure tube. The laser desorption technique was found to be very sensitive and could provide semi-quantitative Li distributions either at low spatial resolution (the length of the 20 cm hub section) or high spatial resolution (revealing Li in micron sized cracks). Other traditional surface science techniques like SAM and XPS are not sensitive to Li, and commercial SIMS instruments cannot accommodate the large hub samples nor allow for profiling over the hub length.
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Baluya, Dodge, Bindesh Shrestha, and Erik N. Cressman. "Abstract 1411: Semi-quantitative mapping of oncological therapies with mass spectrometry imaging." In Proceedings: AACR Annual Meeting 2019; March 29-April 3, 2019; Atlanta, GA. American Association for Cancer Research, 2019. http://dx.doi.org/10.1158/1538-7445.sabcs18-1411.

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Baluya, Dodge, Bindesh Shrestha, and Erik N. Cressman. "Abstract 1411: Semi-quantitative mapping of oncological therapies with mass spectrometry imaging." In Proceedings: AACR Annual Meeting 2019; March 29-April 3, 2019; Atlanta, GA. American Association for Cancer Research, 2019. http://dx.doi.org/10.1158/1538-7445.am2019-1411.

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Wu, P. K. K., J. Chin, R. Tsui, and C. Ng. "Evaluation of Digital Rock Mass Discontinuity Mapping Techniques for Applications in Tunnels." In The HKIE Geotechnical Division 42nd Annual Seminar. AIJR Publisher, 2022. http://dx.doi.org/10.21467/proceedings.133.38.

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High-quality coloured 3D point clouds can now be readily generated by digital surveying techniques such as structure from motion (SfM) photogrammetry and terrestrial laser scanning (TLS). Point clouds allow discontinuities to be mapped digitally on rock slopes and this has been widely studied in Hong Kong. In comparison, few similar applications have been reported in tunnels in Hong Kong. To extend the application of this technology for tunnel excavation, we carried out three site trials in two drill-and-blast hard rock tunnels in Hong Kong. Both SfM photogrammetry and TLS were used to generate point clouds for the exposed rock tunnel surfaces. The generated point clouds were then tested for semi-automatic extraction of rock mass discontinuities using DRM2.0, Aurecon’s in-house developed software. This paper provides detail accounts of data acquisition, data processing, present the findings on the performance of semi-automatic identification of discontinuities, and the comparison between SfM and TLS techniques. The paper also discusses the challenges in digital mapping inside tunnels and provide useful suggestions on conducting laser scanning and photogrammetry in tunnels.
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Caveney, Derek S., Yeonsik Kang, and J. Karl Hedrick. "Probabilistic Mapping for Unmanned Rotorcraft Using Point-Mass Targets and Quadtree Structures." In ASME 2005 International Mechanical Engineering Congress and Exposition. ASMEDC, 2005. http://dx.doi.org/10.1115/imece2005-82889.

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In this paper, the authors present a technique for constructing probabilistic occupancy maps for unmanned rotorcraft. The mapping technique is Bayesian and assumes that a ranging sensor positioned on the rotorcraft is providing noisy target measurements in the presence of clutter. By running a multiple-model Kalman filter-based algorithm, all measurements are used to provide point-mass target state estimates and associated state covariances. Furthermore, the multiple-model algorithm provides probabilities that indicate whether each target is a true target or a false alarm. These three attributes of each target (the state, covariance, and true target probability) are used to build and update the occupancy map. The map is built upon a quadtree structure that allows for higher map resolution in occupied areas of the operating environment and quick access of obstacle locations. This aspect of a quadtree-structured map is particularly useful when transferring obstacle information to obstacle avoidance and route planning routines. The construction of occupancy maps resulting from this quadtree-based, probabilistic technique is demonstrated through simulations of a low-flying rotorcraft travelling through an urban landscape.
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Rush, Lydia A., John B. Cliff, Dallas D. Reilly, Andrew M. Duffin, and Carmen S. Menoni. "Extreme ultraviolet laser ablation mass spectrometry for chemical mapping at the nanoscale." In 2021 IEEE Photonics Conference (IPC). IEEE, 2021. http://dx.doi.org/10.1109/ipc48725.2021.9592924.

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Reports on the topic "Mass-mapping":

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Gatti, Marco. Weak lensing in DES Y3: redshift distributions, shape catalogue, and mass mapping. Office of Scientific and Technical Information (OSTI), January 2020. http://dx.doi.org/10.2172/1771180.

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Everett, Spencer. Mapping all the mass in the universe (with weak gravitational lensing) - Oral Presentation. Office of Scientific and Technical Information (OSTI), August 2015. http://dx.doi.org/10.2172/1213201.

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Jenkins-Smith, H., J. Espey, A. Rouse, and D. Molund. Perceptions of risk in the management of nuclear wastes: Mapping elite and mass beliefs and attitudes. Office of Scientific and Technical Information (OSTI), June 1991. http://dx.doi.org/10.2172/5749733.

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Plouffe, A., D. Petts, I M Kjarsgaard, and M. Polivchuk. Laser ablation inductively coupled plasma mass spectrometry mapping of porphyry -related epidote from south-central British Columbia. Natural Resources Canada/CMSS/Information Management, 2023. http://dx.doi.org/10.4095/331671.

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The microscopic composition of thirteen samples of epidote related to porphyry Cu mineralization was mapped using laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) at the Geological Survey of Canada. The objective of this research is to improve the indicator mineral method of mineral exploration in glaciated terrains by utilizing the trace element composition of epidote. Six bedrock samples from porphyry Cu deposits of south-central British Columbia (Gibraltar, Mount Polley and Woodjam), three bedrock samples from the Nicola Group located close (<2 km) from the intrusions host of porphyry mineralization and afar (12 km), and four epidote grains from two till samples, one at Gibraltar and a second one at Mount Polley, were analyzed. Backscattered electron (BSE) images and the LA-ICP-MS maps show an heterogeneous distribution of Fe and Al in epidote following complex and mottled patterns and consistent zoning typically with high Fe and low Al concentrations in the core progressing to low Fe and high Al concentrations in the rim. Trace elements are heterogeneously distributed in epidote following the Fe/Al zoning in some samples. Evidence of late infiltration of trace elements (e.g. Cu, Zn, and REE) along fractures in epidote is observed in some samples. The variability in epidote composition is thought to be related to the changing conditions during its crystallization including oxidation state, pH, oxygen fugacity, fluid composition, temperature and pressure. Multiple LA-ICP-MS spot analyses need to be conducted on this mineral to fully evaluate its composition as an indicator mineral of porphyry Cu mineralization.
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Mauch, James P., and Joel L. Pederson. Geologic Map of the Southern Half of the Rill Creek and Northern Half of the Kane Springs 7.5' Quadrangles, Grand and San Juan Counties, Utah. Utah Geological Survey, October 2023. http://dx.doi.org/10.34191/mp-175dm.

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The adjoining southern half of the Rill Creek and northern half of the Kane Springs 7.5′ quadrangles are southeast of Moab, Utah. This area includes the southeastern half of the Moab-Spanish Valley salt graben and the neighboring bedrock plateaus to the southwest and northeast. Mapping of this quadrangle-sized area is part of a broader effort to understand active salt deformation and the associated landscape evolution and geologic hazards in the ancestral Paradox Basin. Strata from Late Triassic to Late Cretaceous age are exposed in the map area, and Quaternary-age units include alluvial, colluvial, eolian, mass-wasting, and fluvial terrace deposits. Graben subsidence is accommodated by systems of shallowly seated, near-vertical, gravitational faults along the margins of Spanish Valley. The two graben-margin fault zones display contrasting deformation styles and fault geometries. Ongoing Quaternary subsidence in Spanish Valley is documented in the spatial and temporal distribution of terrace deposits along Mill and Pack Creeks, which confirms previous hypotheses of active salt deformation. The hazard of active, aseismic, salt-dissolution collapse and faulting appears to be modest, with greater concern relating to attendant mass-wasting processes along the valley margins.
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Morse, P. D., R. J. H. Parker, S. L. Smith, and W. E. Sladen. Permafrost-related landforms and geotechnical data compilation, Yellowknife to Grays Bay corridor region, Slave Geological Province. Natural Resources Canada/CMSS/Information Management, 2023. http://dx.doi.org/10.4095/332017.

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Permafrost conditions in the Slave Geological province are not well understood. Thaw of permafrost and associated ground ice can reduce ground stability, which modifies terrain and drainage patterns and affects terrestrial and aquatic ecosystems. This presents critical challenges to northern resource development and societies where thaw of ice-rich permafrost negatively affects the integrity of ground-based infrastructure. In an effort to address this knowledge gap, this report presents a digital georeferenced database of landforms identified in permafrost terrain using high-resolution satellite imagery and provides information on geomorphic indicators of ground ice presence and thaw susceptibility. Digital georeferenced databases compiled from sedimentological and cryostratigraphic records are also provided. The landform database is focused on mapping within a 10 km-wide swath of land (8576 km2 area of interest) centred on the proposed corridors for the 773 km-long Slave Geological Province Corridor Project, NT, and the Grays Bay Road and Port Project, NU. The geomorphic features were classified and digitized using high-resolution (0.5 m) satellite imagery following an existing protocol, which was modified by using a very high-resolution (2 m) digital elevation model (DEM), and by including mapping criteria for additional features. A total of 1393 geomorphic features were mapped comprising 10 different types, which were categorized into 3 classes that include periglacial (1291), hydrological (88), and mass movement (14) features. Data from 254 geotechnical boreholes and 2243 granular deposits were compiled. Information from the compiled databases was analyzed with surficial geology information. Results indicate that the distributions and densities of mapped landforms varied substantially according to surficial geology. High ground ice contents may be quite common in glaciofluvial deposits where creep of frozen ground affects about 30% of eskers. And ground ice may be more extensive overall than the available geotechnical data indicate. Borehole and granular deposit data suggest that overburden thickness above bedrock was up to 25.5 m, and visible ground ice contents were generally between 10% and 30%, but were up to 60% in glacial blanket and glaciofluvial sediments.
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Huntley, D., D. Rotheram-Clarke, R. Cocking, J. Joseph, and P. Bobrowsky. Current research on slow-moving landslides in the Thompson River valley, British Columbia (IMOU 5170 annual report). Natural Resources Canada/CMSS/Information Management, 2022. http://dx.doi.org/10.4095/331175.

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Interdepartmental Memorandum of Understanding (IMOU) 5170 between Natural Resources Canada (NRCAN), the Geological Survey of Canada (GSC) and Transport Canada Innovation Centre (TC-IC) aims to gain new insight into slow-moving landslides, and the influence of climate change, through testing conventional and emerging monitoring technologies. IMOU 5107 focuses on strategically important sections of the national railway network in the Thompson River valley, British Columbia (BC), and the Assiniboine River valley along the borders of Manitoba (MN) and Saskatchewan (SK). Results of this research are applicable elsewhere in Canada (e.g., the urban-rural-industrial landscapes of the Okanagan Valley, BC), and around the world where slow-moving landslides and climate change are adversely affecting critical socio-economic infrastructure. Open File 8931 outlines landslide mapping and changedetection monitoring protocols based on the successes of IMOU 5170 and ICL-IPL Project 202 in BC. In this region, ice sheets, glaciers, permafrost, rivers and oceans, high relief, and biogeoclimatic characteristics contribute to produce distinctive rapid and slow-moving landslide assemblages that have the potential to impact railway infrastructure and operations. Bedrock and drift-covered slopes along the transportation corridors are prone to mass wasting when favourable conditions exist. In high-relief mountainous areas, rapidly moving landslides include rock and debris avalanches, rock and debris falls, debris flows and torrents, and lahars. In areas with moderate to low relief, rapid to slow mass movements include rockslides and slumps, debris or earth slides and slumps, and earth flows. Slow-moving landslides include rock glaciers, rock and soil creep, solifluction, and lateral spreads in bedrock and surficial deposits. Research efforts lead to a better understanding of how geological conditions, extreme weather events and climate change influence landslide activity along the national railway corridor. Combining field-based landslide investigation with multi-year geospatial and in-situ time-series monitoring leads to a more resilient railway national transportation network able to meet Canada's future socioeconomic needs, while ensuring protection of the environment and resource-based communities from landslides related to extreme weather events and climate change. InSAR only measures displacement in the east-west orientation, whereas UAV and RTK-GNSS change-detection surveys capture full displacement vectors. RTK-GNSS do not provide spatial coverage, whereas InSAR and UAV surveys do. In addition, InSAR and UAV photogrammetry cannot map underwater, whereas boat-mounted bathymetric surveys reveal information on channel morphology and riverbed composition. Remote sensing datasets, consolidated in a geographic information system, capture the spatial relationships between landslide distribution and specific terrain features, at-risk infrastructure, and the environmental conditions expected to correlate with landslide incidence and magnitude. Reliable real-time monitoring solutions for critical railway infrastructure (e.g., ballast, tracks, retaining walls, tunnels, and bridges) able to withstand the harsh environmental conditions of Canada are highlighted. The provision of fundamental geoscience and baseline geospatial monitoring allows stakeholders to develop robust risk tolerance, remediation, and mitigation strategies to maintain the resilience and accessibility of critical transportation infrastructure, while also protecting the natural environment, community stakeholders, and Canadian economy. We propose a best-practice solution involving three levels of investigation to describe the form and function of the wide range of rapid and slow-moving landslides occurring across Canada that is also applicable elsewhere. Research activities for 2022 to 2025 are presented by way of conclusion.
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Roberts, Tony, Judy Gitahi, Patrick Allam, Lawrence Oboh, Oyewole Oladapo, Gifty Appiah-Adjei, Amira Galal, et al. Mapping the Supply of Surveillance Technologies to Africa: Case Studies from Nigeria, Ghana, Morocco, Malawi, and Zambia. Institute of Development Studies, September 2023. http://dx.doi.org/10.19088/ids.2023.027.

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African governments are spending over 1US$bn per year on digital surveillance technologies which are being used without adequate legal protections in ways that regularly violate citizens’ fundamental human rights. This report documents which companies, from which countries, are supplying which types of surveillance technology to African governments. Without this missing detail, it is impossible to adequately design measures to mitigate and overcome illegal surveillance and violations of human rights. Since the turn of the century, we have witnessed a digitalisation of surveillance that has enabled the algorithmic automation of surveillance at a scale not previously imaginable. Surveillance of citizens was once a labour and time-intensive process. This provided a practical limit to the scope and depth of state surveillance. The digitalisation of telephony has made it possible to automate the search for keywords across all mobile and internet communications. For the first time, state surveillance agencies can do two things: (a) conduct mass surveillance of all citizens’ communications, and (b) micro-target individuals for in-depth surveillance that draws together in real-time data from mobile calls, short message service (SMS), internet messaging, global positioning system (GPS) location, and financial transactions. This report was produced by qualitative analysis of open-source data in the public domain. The information presented is drawn from a diverse range of sources, including open government data sets, export licence portals, procurement notices, civil society databases of surveillance contracts, press releases from surveillance companies, academic articles, reports, and media coverage. The research is organised using a typology of five categories of surveillance technology. We did not set out to detail every technology available, every company, or every supply contract. Instead, we document the main companies and countries selling digital surveillance technologies to African governments. Rather than focus on the technical functionality distinguishing each product offering, we highlight five of the most important types of surveillance technology: internet interception, mobile interception, social media surveillance, ‘safe city’ technologies for the surveillance of public spaces, and biometric identification technologies.
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Lacerda Silva, P., G. R. Chalmers, A. M. M. Bustin, and R. M. Bustin. Gas geochemistry and the origins of H2S in the Montney Formation. Natural Resources Canada/CMSS/Information Management, 2022. http://dx.doi.org/10.4095/329794.

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The geology of the Montney Formation and the geochemistry of its produced fluids, including nonhydrocarbon gases such as hydrogen sulfide were investigated for both Alberta and BC play areas. Key parameters for understanding a complex petroleum system like the Montney play include changes in thickness, depth of burial, mass balance calculations, timing and magnitudes of paleotemperature exposure, as well as kerogen concentration and types to determine the distribution of hydrocarbon composition, H2S concentrations and CO2 concentrations. Results show that there is first-, second- and third- order variations in the maturation patterns that impact the hydrocarbon composition. Isomer ratio calculations for butane and propane, in combination with excess methane estimation from produced fluids, are powerful tools to highlight effects of migration in the hydrocarbon distribution. The present-day distribution of hydrocarbons is a result of fluid mixing between hydrocarbons generated in-situ with shorter-chained hydrocarbons (i.e., methane) migrated from deeper, more mature areas proximal to the deformation front, along structural elements like the Fort St. John Graben, as well as through areas of lithology with higher permeability. The BC Montney play appears to have hydrocarbon composition that reflects a larger contribution from in-situ generation, while the Montney play in Alberta has a higher proportion of its hydrocarbon volumes from migrated hydrocarbons. Hydrogen sulphide is observed to be laterally discontinuous and found in discrete zones or pockets. The locations of higher concentrations of hydrogen sulphide do not align with the sulphate-rich facies of the Charlie Lake Formation but can be seen to underlie areas of higher sulphate ion concentrations in the formation water. There is some alignment between CO2 and H2S, particularly south of Dawson Creek; however, the cross-plot of CO2 and H2S illustrates some deviation away from any correlation and there must be other processes at play (i.e., decomposition of kerogen or carbonate dissolution). The sources of sulphur in the produced H2S were investigated through isotopic analyses coupled with scanning electron microscopy, energy dispersive spectroscopy, and mineralogy by X-ray diffraction. The Montney Formation in BC can contain small discrete amounts of sulphur in the form of anhydrite as shown by XRD and SEM-EDX results. Sulphur isotopic analyses indicate that the most likely source of sulphur is from Triassic rocks, in particular, the Charlie Lake Formation, due to its close proximity, its high concentration of anhydrite (18-42%), and the evidence that dissolved sulphate ions migrated within the groundwater in fractures and transported anhydrite into the Halfway Formation and into the Montney Formation. The isotopic signature shows the sulphur isotopic ratio of the anhydrite in the Montney Formation is in the same range as the sulphur within the H2S gas and is a lighter ratio than what is found in Devonian anhydrite and H2S gas. This integrated study contributes to a better understanding of the hydrocarbon system for enhancing the efficiency of and optimizing the planning of drilling and production operations. Operators in BC should include mapping of the Charlie Lake evaporites and structural elements, three-dimensional seismic and sulphate ion concentrations in the connate water, when planning wells, in order to reduce the risk of encountering unexpected souring.
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Anderson, Zachary W., Greg N. McDonald, Elizabeth A. Balgord, and W. Adolph Yonkee. Interim Geologic Map of the Browns Hole Quadrangle, Weber and Cache Counties, Utah. Utah Geological Survey, December 2023. http://dx.doi.org/10.34191/ofr-760.

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The Browns Hole quadrangle is in Weber and Cache Counties of northern Utah and covers the eastern part of Ogden Valley, a rapidly developing area of the Wasatch Range. The Middle and South Forks of the Ogden River bisect the quadrangle and are important watersheds and recreational areas to the communities of Ogden Valley and the Wasatch Front. The towns of Huntsville and Eden are just west of the quadrangle, unincorporated communities with year-round residents are present throughout the quadrangle, and numerous summer-cabin communities are present in the eastern part of the quadrangle. A portion of Powder Mountain ski resort, which draws year-round visitation and recreation, is present in the northwest corner of the quadrangle. The quadrangle contains the Willard thrust, a major thrust fault with approximately 30 mi (50 km) of eastward displacement that was active during the Cretaceous-Eocene Sevier orogeny (Yonkee and others, 2019). In the quadrangle, the Willard thrust places Neoproterozoic through Ordovician strata in the hanging wall over a fault-bounded lozenge of Cambrian strata and footwall Jurassic and Triassic strata (see cross section on Plate 2). Neoproterozoic strata comprise a succession of mostly clastic rocks deposited during rifting of western North America and breakup of the supercontinent Rodinia (Yonkee and others, 2014). These rocks include the Cryogenian-age Perry Canyon and Maple Canyon Formations, and the Ediacaran-age Kelley Canyon Formation, Papoose Creek Formation, Caddy Canyon Quartzite, Inkom Formation, Mutual Formation, and Browns Hole Formation. The Browns Hole Formation is a sequence of interbedded volcaniclastic rock and basalt lava flows that provides the only radiometric age control in the quadrangle. Provow and others (2021) reported a ~610 Ma detrital apatite U-Pb age from volcaniclastic sandstone at the base of the formation, Crittenden and Wallace (1973) reported a 580 ± 14 Ma K-Ar hornblende age for a volcanic clast, and Verdel (2009) reported a 609 ± 25 Ma U-Pb apatite age for a basalt flow near the top of the formation. Cambrian strata in the hanging wall include a thick basal clastic sequence (Geertsen Canyon Quartzite) overlain by a thick sequence of interbedded limestone, shale, and dolomite (Langston, Ute, and Blacksmith Formations). Hanging wall rocks are deformed by Willard thrust-related structures, including the Browns Hole anticline, Maple Canyon thrust, and numerous smaller folds and minor faults. Footwall rocks of the Willard thrust include highly deformed Cambrian strata within a fault-bounded lozenge exposed in the southern part of the quadrangle, and Jurassic and Triassic rocks exposed just south of the quadrangle. The Paleocene-Eocene Wasatch Formation unconformably overlies older rocks and was deposited over considerable paleotopography developed during late stages of the Sevier orogeny. The southwest part of the quadrangle is cut by a southwest-dipping normal fault system that bounds the east side of Ogden Valley. This fault is interpreted to have experienced an early phase of slip during local late Eocene to Oligocene collapse of the Sevier belt and deposition of volcanic and volcaniclastic rocks (Norwood Tuff) exposed west of the quadrangle (Sorensen and Crittenden, 1979), and a younger phase of slip during Neogene Basin and Range extension (Zoback, 1983). Lacustrine deposits and shorelines of Pleistocene-age Lake Bonneville are present in the southwest corner of the quadrangle near the mouth of the South Fork of the Ogden River and record the highstand of Lake Bonneville (Oviatt, 2015). Pleistocene glacial deposits, present in the northwest corner of the map, are likely related to the Pinedale glaciation, commonly expressed by two moraine building episodes in the Wasatch Range (Quirk and others, 2020). Numerous incised alluvial deposits and geomorphic surfaces are present along major drainages and record pre- and post-Lake Bonneville aggradational and degradational alluvial and colluvial sequences. Mass-movement deposits, including historically active landslides, are present throughout the quadrangle. Crittenden (1972) mapped the Browns Hole quadrangle at 1:24,000 scale, which provided an excellent foundation for the general stratigraphy and structure, but the 1972 map lacked important details of unconsolidated surficial units. As part of 1:62,500 scale mapping of the Ogden 30'x60' quadrangle, Coogan and King (2016) updated stratigraphic nomenclature, revised some contacts, and added more details for surficial units. For this map, we utilized new techniques for data acquisition and analysis to delineate surficial deposits, bedrock contacts, and faults more accurately and precisely. Mapping and field data collection were largely done in 2021–2022 using a combination of GPS-enabled tablets equipped with georectified aerial imagery (U.S. Department of Agriculture [USDA] National Agriculture Imagery Program [NAIP], 2009), orthoimagery (Utah Geospatial Resource Center [UGRC] State Geographic Information Database, 2018b, 2018c; 2021a, 2021b), and lidar data (UGRC State Geographic Information Database, 2006; 2011; 2013–2014; 2018a), previously published geologic maps, topographic maps, and applications for digital attitude collection. We also used hand-held GPS units, Brunton compasses, and field notebooks to collect geologic data. Field data were transferred to a Geographic Information System (GIS), where the map was compiled and completed.

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