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Academic literature on the topic 'Lithological Units'

Author: Grafiati

Published: 3 June 2025

Last updated: 19 July 2025

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Journal articles on the topic "Lithological Units"

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Khalifa, Abdelrahman, Bashar Bashir, Ziyadin Çakir, Şinasi Kaya, Abdullah Alsalman, and Ahmed Henaish. "Paradigm of Geological Mapping of the Adıyaman Fault Zone of Eastern Turkey Using Landsat 8 Remotely Sensed Data Coupled with PCA, ICA, and MNFA Techniques." ISPRS International Journal of Geo-Information 10, no. 6 (2021): 368. http://dx.doi.org/10.3390/ijgi10060368.

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A principal and independent component analysis (PCA and ICA) and a minimum noise fraction analysis (MNFA) were applied in this study to Landsat 8 Operational Land Imager (OLI) images along the Adıyaman fault zone in Eastern Turkey. These analyses indicated that the lithologic units, fault patterns, and the morphological and structural features can be mapped highly accurately by using spectral-matching techniques in regions where rocks are well exposed. An inspection of all possible band combinations indicated that the PCA 134 and 231 and the ICA 132 band combinations give the best false color

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Wasilewska-Błaszczyk, Monika, and Jacek Mucha. "Geochemical modeling of the Cu-Ag deposits from the Lubin-Głogów Copper District (Poland) supported by lithological modeling." Gospodarka Surowcami Mineralnymi 33, no. 4 (2017): 63–78. http://dx.doi.org/10.1515/gospo-2017-0049.

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Abstract The most important reasons for the limited credibility of 3D geochemical models of the Cu-Ag deposits (The Lubin-Głogów Copper District) are unfavorable statistical characteristics of the main metals (Cu, Ag), and the unfavorable structure of their variability with a relatively poorly marked non-random component of variability. It is hoped that the accuracy of geochemical models can be increased by previous lithological modeling of a given deposit. This is due to significant differences in mean Cu content in both the main lithological series (carbonates, shales and sandstones) and ind

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Nenadic, Drazenko, Vladimir Simic, and Slobodan Knezevic. "Stratigraphical and Lithological characteristics of Preloess sediments in Eastern Srem, Serbia." Annales g?ologiques de la Peninsule balkanique, no. 64 (2002): 53–62. http://dx.doi.org/10.2298/gabp0264053n.

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In the area of Eastern Srem Pleistocene sediments cover large territories. Their facial diversity and very complex interrelations of lithological units are one of the important features of this part of the Pannonian basin. Study of stratigraphic, lithologic, sedimentologic and mineralogic characteristics of these deposits from boreholes in Zemun, Indjija, Cortanovci and Ruma led to conclusion that the interaction of tectonic and climatic changes, as well as difference in sedimentological environments, caused formation of genetically different lithostratigraphic units.

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Valchev, Boris, and Hristo Dimitrov. "New data on the Paleogene lithostratigraphic units’ distribution in the Avren Step south of Varna and Beloslav Lakes based on borehole data and seismic profiles’ interpretation." Review of the Bulgarian Geological Society 81, no. 1 (2020): 55–67. http://dx.doi.org/10.52215/rev.bgs.2020.81.1.4.

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The present article aims to provide new data on the spatial distribution and lithological features of the Paleogene lithostratigraphic units in the Avren Step, which is a part of the Moesian Platform in Eastern Bulgaria. On the basis of primary lithological data derived from 81 boreholes’ sections and lithostratigraphic interpretation of five seismic profiles, six formal Paleogene lithostratigraphic units were recognized. They are as follows: the Komarevo Fm. (Thanetian), the Beloslav Fm. (Ypresian), the Dikilitash Fm. (Ypresian), the Aladan Fm. (Ypresian), the Avren Fm. (uppermost Ypresian–Pr

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Hajaj, Soufiane, Abderrazak El Harti, Amine Jellouli, et al. "Evaluating the Performance of Machine Learning and Deep Learning Techniques to HyMap Imagery for Lithological Mapping in a Semi-Arid Region: Case Study from Western Anti-Atlas, Morocco." Minerals 13, no. 6 (2023): 766. http://dx.doi.org/10.3390/min13060766.

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Accurate lithological mapping is a crucial juncture for geological studies and mineral exploration. Hyperspectral data provide the opportunity to extract detailed information about the geology and mineralogy of the Earth’s surface. Machine learning (ML) and deep learning (DL) techniques provide an accurate and effective mapping of various types of lithologies in arid and semi-arid regions. This article discusses the use of machine learning algorithms, specifically Support Vector Machines (SVM), one-dimensional Convolutional Neural Network (1D-CNN), random forest (RF), and k-nearest neighbor (K

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Efetobore, Maju-Oyovwikowhe Gladys, and Eguagie Michael Owenvbiugie. "Lithostratigraphic Characterization and Petroleum System Elements of the MI Well, Niger Delta Basin." Current Journal of Applied Science and Technology 42, no. 16 (2023): 67–83. http://dx.doi.org/10.9734/cjast/2023/v42i164137.

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This study presents a comprehensive lithostratigraphic characterization of the MI Well in the Niger Delta Basin through microscopic examination of ditch cutting samples. The aim was to identify the lithological units and assess the presence and distribution of petroleum system elements. A total of seventy-two samples ranging in depth from 4500ft-11460ft (1372m-3493m) were analyzed, revealing four lithological units: sandstone, shale, sandy shale, and shaly sand. Through interpretation of the lithological log, the cap/seal rock, reservoir rock, and probable source rock units were identified. Th

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Ahmad, Waqar, Lei Liu, Zhenhua Guo, Yasir Shaheen Khalil, Nazir Ul Islam, and Fakhrul Islam. "Lithological Classification Using ZY1-02D Hyperspectral Data by Means of Machine Learning and Deep Learning Methods in the Kohat–Pothohar Plateau, Khyber Pakhtunkhwa, Pakistan." Remote Sensing 17, no. 8 (2025): 1356. https://doi.org/10.3390/rs17081356.

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Lithological mapping using satellite images, particularly hyperspectral data, helps in effectively defining the best initial targets for regional exploration. In this study, ZY1-02D hyperspectral image (HSI) data with moderate spectral and very high spatial resolution were employed for lithological mapping using spectral indices along with support vector machine (SVM) machine learning and spatial–spectral transformer (SSTF) deep learning methods in the Kohat–Pothohar Plateau at the eastern edge of the Main Boundary Thrust (MBT) in Pakistan. The research was accomplished using spectral profiles

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Thannoun, Rayan Ghazi. "MAPPING LITHOLOGICAL AND MINERALOGICAL UNITS USING HYPERSPECTRAL IMAGERY." Malaysian Journal of Science 40, no. 1 (2021): 93–106. http://dx.doi.org/10.22452/mjs.vol40no1.8.

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Errami, Maryam, Ahmed Algouti, Abdellah Algouti, Abdelouhed Farah, and Saloua Agli. "Utilization of ASTER data in lithological and lineament mapping of the southern flank of the Central High Atlas in Morocco." Geologos 29, no. 1 (2023): 1–20. http://dx.doi.org/10.14746/logos.2023.29.1.01.

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Geological mapping undoubtedly plays an important role in several studies and remote sensing data are of great significance in geological mapping, particularly in poorly mapped areas situated in inaccessible regions. In the present study, Principal Component Analysis (PCA), Band Rationing (BR) and Minimum Noise Fraction (MNF) algorithms are applied to map lithological units and extract lineaments in the Amezri-Amassine area, by using multispectral ASTER image and global digital elevation model (GDEM) data for the first time. Following preprocessing of ASTER images, advanced image algorithms su

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El-Haddad, Bosy A., Ahmed M. Youssef, Tawfiq M. Mahran, and Abdel Hammed El-Sharter. "Integrating remote sensing and field investigation for lithological mapping of Per-Eonile to Neonile sequences west of Sohag city, Egypt: Impact on urban development." Journal of Geography and Cartography 7, no. 1 (2024): 6028. http://dx.doi.org/10.24294/jgc.v7i1.6028.

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In the domains of geological study, natural resource exploitation, geological hazards, sustainable development, and environmental management, lithological mapping holds significant importance. Conventional approaches to lithological mapping sometimes entail considerable effort and difficulties, especially in geographically isolated or inaccessible regions. Incorporating geological surveys and satellite data is a powerful approach that can be effectively employed for lithological mapping. During this process, contemporary RS-enhancing methodologies demonstrate a remarkable proficiency in identi

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Dissertations / Theses on the topic "Lithological Units"

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Han, Shujie. "Statistical analysis of stream networks and hydrological-hydrogeological parameters of lithological units in Oak Ridges Moraine, southern Ontario with GIS techniques." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape9/PQDD_0001/MQ43385.pdf.

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Welder, Jennifer. "Seismic Interpretation and Well Log Analysis of Jay County, Indiana, focused on lithologic units below the Mt. Simon Formation." Wright State University / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=wright1421158261.

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Books on the topic "Lithological Units"

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Johnson, Bruce R. Digital map of major bedrock lithologic units for the Pacific Northwest: A contribution to the Interior Columbia River Basin Ecosystem Management Project. U.S. Geological Survey, 1995.

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Skupio, Rafał. Zastosowanie nieinwazyjnych pomiarów rdzeni wiertniczych do zwiększenia informacji na temat parametrów skał zbiornikowych. Instytut Nafty i Gazu - Państwowy Instytut Badawczy, 2022. http://dx.doi.org/10.18668/pn2022.237.

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The research carried out in the monograph aimed to create a measurement and interpretation system which is to obtain reliable results of well logging with the accuracy of laboratory measurements. Continuous core measurements allow for the generation of logging results without the impact of the borehole and facilitate the depth matching of the core to well log data. Four main chapters can be distinguished in this work: research methodology with a description of the devices used; partial results of core measurements made on various types of rocks; a proposal for a research system, and comprehens

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United States Geological Survey. Map of major lithologic units in the Pacific Northwest: A contribution to the Interior Columbia Basin Ecosystem Management Project (Geologic investigations series). Information Services [distributor], 2001.

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Book chapters on the topic "Lithological Units"

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Jabaloy Sánchez, Antonio, Agustín Martín-Algarra, José Alberto Padrón-Navarta, et al. "Lithological Successions of the Internal Zones and Flysch Trough Units of the Betic Chain." In The Geology of Iberia: A Geodynamic Approach. Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-11295-0_8.

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Qureshi Mohsin Usman, Al-Mawali Khalid, and Khan Kamran Muzaffar. "Using RQD to Estimate the In-Situ Permeability of Discontinuous Sedimentary Rock." In Advances in Soil Mechanics and Geotechnical Engineering. IOS Press, 2013. https://doi.org/10.3233/978-1-61499-297-4-447.

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In-situ permeability of rock mass is governed by its discontinuities and is important to investigate it by a widely accepted parameter, &ldquo;rock quality designation (RQD)&rdquo;. In this regard, site investigations conducted during construction of hydraulic structures in the complex lithological units of Oman were reviewed with aim to summarize the data obtained by drilling of boreholes with recovered cores (RQD) and Lugeon's tests (in-situ permeability) in discontinuous sedimentary rocks. The plot of RQD and apparent in-situ permeability suggested a consistent relationship, with respect to the each lithological unit and extent of investigation as well. The developed relationship is recommended for the onsite determination of apparent in-situ permeability Kaof discontinuous sedimentary rocks by recovering the RQD values only. However, the RQD being less than the threshold value of 25% necessitates a detailed investigation to elucidate the in-situ permeability.

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González N.A., Gens A., Arroyo M., and Rouainia M. "Modelling the behaviour of structured London Clay." In Deformation Characteristics of Geomaterials. IOS Press, 2011. https://doi.org/10.3233/978-1-60750-822-9-1052.

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The paper presents a constitutive modelling of the London clay based on the detailed laboratory knowledge gathered about London clay structure (Hight et al, 2007; Gasparre et al, 2007; Gasparre &amp; Coop, 2008). Modelling was performed using a structured kinematic hardening soil model based on Rouainia &amp; Wood (2000). It was found that a smooth elasto-plastic transition was required to avoid a spurious stiffness degradation response. Consequently, the initial model was modified following a procedure similar to that suggested by Grammatikopoulou et al. (2006). Parameters associated with soil structure and state variables for each lithological sub-unit of the London clay are presented. A good prediction of stress-strain, strength and stiffness behaviour in the small strain range is obtained in spite of the complex behaviour observed in laboratory. The significantly different mechanical behaviours of the lithological sub-units, arising from differences in structure, are adequately reproduced.

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Oikonomidis Dimitrios, Mouratidis Antonios, Astaras Theodore, and Niarhos Mihail. "Geological Mapping by the Use of Multispectral and Multitemporal Satellite Images, Compared with GIS Geological Data. Case Studies from Macedonia Area, Northern Greece." In Imagin[e,g] Europe. IOS Press, 2010. https://doi.org/10.3233/978-1-60750-494-8-311.

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Geological mapping is one of the fundamental acts that a geologist should perform in order to proceed to higher levels of a research. This includes basically, mapping of lithological units and tectonic lines (faults). Satellite images give geologists a unique opportunity to observe the complex interaction of large-scale geological structures that make up Earth's landscape. Furthermore, digital satellite data can be manipulated and enhanced in order to accentuate the surface expressions of certain geological features. In most of the cases, this is usually done in &ldquo;ideal&rdquo; test sites, with absence of vegetation, soil cover, etc. In this paper, various digital image processing techniques were applied on Landsat-7/ETM+ and Terra/ASTER satellite images, acquired on different dates, in order to produce the most appropriate images for geological mapping, in typical Mediterranean terrain. Two areas were chosen as case studies, the Kassandra peninsula and Thassos island. Boundaries of photo-lithological units and photo-lineaments are drawn on the above satellite images. The results are compared with digitized geological maps of 1/50.000 scale and are evaluated.

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Han, Sipeng, Shuang Shuai, Wangchuan Guo, and Peng Yang. "Automatic Classification Method of Quaternary Lithology in Vegetation Cover Area Combining Spectral, Textural, Topographic, Geothermal, and Vegetation Features." In Advances in Transdisciplinary Engineering. IOS Press, 2021. http://dx.doi.org/10.3233/atde210216.

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To explore the automatic classification method of Quaternary lithology in vegetation covered areas is significantly helpful to improve the efficiency of Quaternary lithology mapping. Due to the vegetation cover and human modification effects, the traditional lithology identification methods based on image spectra and textures are often challenging to be effective. This paper uses multi-source remote sensing data such as OLI, TIRS, and ASTER GDEM to extract multiple types of spectral (SPEC), textural (TEX), topographic (TOPO), geothermal (TEM), and vegetation (VEG) based on principal component transform, gray co-occurrence matrix, topographic factor calculation, thermal radiation transport model and vegetation index in the Quaternary distribution area of Viet Chi, Vietnam. Remote sensing features were selected and combined to form 16 kinds of classification datasets. The lithological units was automatically classified using the random forest method, The method’s accuracy was evaluated to study the effectiveness of multi-type remote sensing features on the automatic classification of Quaternary lithology in vegetation cover area. The results show that the geothermal, textural, and topographic features can effectively improve the lithological classification accuracy, and the overall classification accuracy is improved by 0.32%, 0.87%, and 2.25%, respectively, compared with the use of spectral data alone. Among the 16 classification datasets constructed, the dataset combining spectral, textural, topographic, and geothermal features (SPEC+ TEX+ TOPO+ TEM) obtained the highest automatic lithology classification accuracy of 80.99%. This study can provide a technical idea for rapid differentiation of regional Quaternary surface sediment lithologies.

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Jain, Ronak. "Feature-Oriented Principal Component Selection (FPCS) for Delineation of the Geological Units Using the Integration of SWIR and TIR ASTER Data." In Remote Sensing [Working Title]. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.99046.

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Geological studies have been performed using the Band Ratios (BR), Relative Band Depth (RBD), Mineral Indices (MI), Principal Component Analysis (PCA), Independent Component Analysis (ICA), lithological and mineral classification techniques from Short-Wave Infrared (SWIR) and Thermal Infrared (TIR) data. The chapter aims to delineate various geological units present in the area using the combination of SWIR and TIR ASTER bands through the Feature-Oriented Principal Component Selection (FPCS) technique. Different BRs and RBDs were applied to map the minerals having Al-OH and Mg-OH compounds with the chemical composition of clay (kaolinite, smectite), mica (sericite, muscovite, illite), ultramafic (lizardite, antigorite, chrysotile), talc, and carbonate (dolomite) from SWIR bands. The MI was used to map quartz-rich, mafic/ultramafic, and carbonate rocks using TIR bands. The BRs, RBDs, and MIs mapped the geological units but every single greyscale image showed a variety of features. To compile these features False Color Composite (FCC) was prepared by the combination of RBDs and MIs in the R:G:B channels which demarked various geological units to a larger extent present in the region. To overcome the limitation, the FPCS technique was applied with the integration of all BRs, RBDs, and MIs. The FPCS technique extracts valuable information from different input bands and shifts the information in the first few bands. The generated eigenvalues and eigenvectors represented the retrieved information in the specific band. The loadings of the eigenvector were used for the selection of the different brands to create the FCC for the delineation of geological strata. The best discrimination was made by the selection of FPCS1, FPCS3, and FPCS6 which differentiated all the geological units like ultramafics, dolomites, thin bands of talc, and muscovite and illite (as phyllite and mica-schist), silica-rich rocks (as quartzite), and granite outcrops.

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Wasilewski, Michał. "Rozpoznanie petrograficzne i analiza geoarcheologiczna kamiennych zabytków ruchomych z cmentarzyska w Świbiu / Petrographic identification and geoarchaeological analysis of lithic portable artefacts from the cemetery at Świbie." In Cmentarzysko w wczesnej epoki żelaza w Świbiu na Górnym Śląsku. Tom 2. Wydawnictwo Profil-Archeo, 2022. http://dx.doi.org/10.33547/swibie2022.2.17.

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The site of Świbie 16 is located near the border of two very important physiographic units: the Silesia Upland Macroregion and the Silesia Lowland Macroregion (Kondracki 2002; Solon et al. 2018; Richling et al. 2021). Such a location offered good access to the rocks abundant in the former macroregion and the rivers and arable lands in the latter. Geologically, the discussed site lies within the Krakow-Częstochowa monocline. The identification of raw materials was carried out using macroscopic methods only, using Brinell magnifiers with 10x and 20x magnification, hydrochloric acid (HCl 5%), and the Munsell scale. Middle Triassic rocks occur in the direct subsoil of the Świbie 16 site. They occur as Muschelkalk (Lower Gogolin Beds) and limestones and marls (Upper Gogolin Beds). Small quarries of these rocks operated within a radius of 10 km from the site. Within a radius of 15-20 km from Świbie 16, outcrops of other rocks can also be found: Lower Carboniferous beds (Visean; in the form of greywacke sandstones, shales and mudstones), Lower Triassic (Induan-Olenekian; sands, motley (red) sandstones, clays, claystones and mudstones), Middle Triassic (Anisian, the so-called Jemielnica Beds, formed as dolomites), Upper Triassic (Keuper (=Carnian-Norian)), the Lisowskie beds (occurring, among others, as laminated, motley claystones of various colors, including yellow-aquamarine and green), and Lower Jurassic. Younger sediments are represented by glacial, fluvioglacial and fluvial sediments (clays, sands, gravels and even boulders). These formations contain both pebbles of the bedrock and Scandinavian rocks. In the immediate vicinity there are also sites of alluvium, lake silts with chalk, and peats, which are the remains of a Holocene water reservoir. The origin of the Muschelkalk objects found in graves 275 and 286 is least in doubt. However, their interpretation as artefacts should be approached with caution, because no obvious traces of processing were noticed during their examination. Four items (an axe, a polisher, a whetstone, and a geofact) were made from sandstone. In all of them, the raw material is very similar petrographically, and its source should be sought in the Lower Triassic rocks or fluvial gravels occurring south of Świbie. In grave 16, an axe made of amphibolite was found. This rock probably comes from fluvioglacial deposits. Two objects (an axe and a disc with a hole) were made of greenish shales. Similar shales and claystones come from the Lisowskie beds, which occur not far north of the site. The three quartz pebbles analysed are typical, natural components of Quaternary fluvial or fluvioglacial gravels and are not particularly interesting for geoarchaeological analyses. The presented geographical, geological and lithological context, in confrontation with the results of the macroscopic petrographic analysis of lithic artefacts from the Świbie 16 site, allows us to conclude that the raw materials used for their production are of local provenance. They most likely come from a distance of no more than 10–15 km from the site.

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Rudenko, O. V. "Palinostratigraphy of glaciomarine and marine sedimentsof the Barents Sea." In THE BARENTS SEA SYSTEM. Shirshov Institute of Oceanology Publishing House, 2021. http://dx.doi.org/10.29006/978-5-6045110-0-8/(7).

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By combining the palynologic, lithologic and published geophysical data a stratigraphic division into three main sedimentary units representing major stages in the development of post-glacial sedimentary environments in the southeastern and central parts of the Barents Sea has been substantiated. Unit 3 presumably characterizes proglacial environments of the early deglaciation (tentatively older than 15 ka) and is represented by relatively fine-grained, dark grey sediment matrix with numerous coarse terrigenous clasts. The unit contains low in diversity and concentration pollen assemblage, which is dominated by reworked, mostly Mesozoic pollen and sparse dinocysts of a cryophylic species Islandinium var. minutum. Unit 2 represents later deglacial conditions (estimated ca 12-15 ka) and is composed of finely laminated, grey to brownish sandy/silty muds with coarse clasts interpreted as iceberg-rafted debris. It is characterized by pollen assemblage zone with a low concentration of plant remains, a significant proportion of reworked pre-Cenozoic microfossils and club mosses among spores as well as a high percentage of dwarfBetula, Poaceae and Artemisia Islandinium var. minutum dominates among the aquatic palynomorphs. Unit 1, younger than ca 12 ka, is composed of soft, olive-grey mud with traces of bioturbations and spots of hydrotroilite at the top or sandy-silty mud within the South-Novozemelskii Trough and sand with inclusions of pebbles and broken shells within the Kanin Plateau. Three pollen assemblage zones correspond to it. They are marked by a high percentage of birch and pine pollen, an increased share of pollen of spruce and alder, as well as Sphagnum mosses and ferns. Constant presence of sparse pollen of broad-leaved plants in combination with peak values of Operculodinium centrocarpum and Spiniferites sp. testify the enhancement of Atlantic water influence upon the studied regions.

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Bohacs, K. M., O. R. Lazar, and J. D. Ottmann. "6 Parasequence Sets and Depositional Sequences." In Sequence Stratigraphy: Applications to Fine-Grained Rocks. The American Association of Petroleum Geologists and Brazilpetrostudies, 2022. http://dx.doi.org/10.1306/137123011283.

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ABSTRACT This chapter presents definitions, recognition criteria, and examples of parasequence sets, depositional sequences, and their key defining surfaces to be applied within the overall sequence-stratigraphic workflow. This scale of stratification is most useful for correlating and mapping across large areas of basins and for understanding and predicting the character and distribution of rock properties. Hydrocarbon play-element properties vary systematically within depositional sequences in many settings. It is also typically the scale at which ties can be made to traditional lithostratigraphic formations. The depositional sequence is the fundamental stratal unit for basin-scale sequence-stratigraphic analysis. It has great practical utility for many reasons: its sequence boundaries are distinctive, widespread surfaces of chronostratigraphic significance that form independently of the sediment supply rate. (In contrast, transgressions and regressions are strongly controlled by rates of sediment supply and, for that reason, can be regionally diachronous. There are also several major and many minor flooding surfaces within each depositional sequence that can potentially be miscorrelated regionally, especially among widely spaced control points.) The regionally significant erosion and onlap associated with a sequence boundary exert a strong influence on facies distribution. The distinct break in deposition and basinward shift in facies across the unconformable part of a sequence boundary make it a quite useful surface for separating relatively conformable facies packages above and below. Systems tracts occur predictably within the depositional sequence and have characteristic relations to the sequence boundary. In contrast, considering only facies, without recognizing the hierarchy of the chronostratigraphic stratal surfaces within which such facies change, can lead to inaccurate conclusions about rock-property distribution or contemporaneity of the facies. The time-transgressive nature of lithofacies units makes it essential to use physical surfaces rather than lithologic units for correlation.

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Hetzel, A., H. J. Brumsack, B. Schnetger, and M. E. Bottcher. "Inorganic geochemical characterization of lithologic units recovered during ODP Leg 207 (Demerara Rise)." In Proceedings of the Ocean Drilling Program, 207 Scientific Results. Ocean Drilling Program, 2006. http://dx.doi.org/10.2973/odp.proc.sr.207.107.2006.

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Conference papers on the topic "Lithological Units"

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Fedorov, Grigory, Dmitry Sadokov, Vsevolod Rudakov, Irina Fedorova, and Larisa Ghazaryan. "HOLOCENE LACUSTRINE SEDIMENTATION PATTERNS ON LORI PLATEAU (SOUTH CAUCASUS)." In 24th SGEM International Multidisciplinary Scientific GeoConference 24. STEF92 Technology, 2024. https://doi.org/10.5593/sgem2024/1.1/s01.13.

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This study provides a characterization of the Holocene sedimentary processes in Lake Urasar (Lori plateau, Armenia). Lake Urasar is less than 0.1 sq. km with 8.5 m max. depth. 2 m -long sediment core was retrieved by using peat corer in the deepest part of the lake during summer 2023. Obtained core was a subject for detailed lithological description and XRF-scanning. Three lithological units are identified in the sediment sequence reflecting different sedimentation patterns. Unit I (200 � 164 cm) characterized by frequent changes in the chemical elements concentrations and reflects sensitivity

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Trapeznikov, Danil Evgenievich, Alexey Viktorovich Krasikov, and Vyacheslav Zaostrovsky. "The first results of studying the geological structure of Ice Mountain area (Kungur District)." In Проблемы минералогии, петрографии и металлогении. Научные чтения памяти П. Н. Чирвинского. ПЕРМСКИЙ ГОСУДАРСТВЕННЫЙ НАЦИОНАЛЬНЫЙ ИССЛЕДОВАТЕЛЬСКИЙ УНИВЕРСИТЕТ, 2022. http://dx.doi.org/10.17072/chirvinsky.2022.250.

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The paper presents the results of studying the geological structure of the Ice Mountain area, within the framework of which the lithological and stratigraphic partitioning of sediments was carried out and the distribution borders of the main stratigraphic units – horizons and members – were traced. On the basis of the obtained data the layout of the geological map was compiled.

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Conner, Amber, Autumn Haagsma, Stephen Kaczmarek, et al. "CHARACTERIZING AND MAPPING THE LITHOLOGICAL AND PETROPHYSICAL DIVERSITY OF POTENTIAL CONFINING UNITS IN THE MICHIGAN BASIN." In GSA Connects 2024 Meeting in Anaheim, California. Geological Society of America, 2024. http://dx.doi.org/10.1130/abs/2024am-401608.

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Acharya, Sushil, and Karl Fabian. "Unsupervised Machine Learning for Well Log Depth Alignment." In ASME 2024 43rd International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2024. http://dx.doi.org/10.1115/omae2024-123362.

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Abstract Depth alignment as a prerequisite for subsurface geology interpretation aims to match signals of two logs from the same well to a common depth scale. Here, three consecutive unsupervised machine-learning techniques are applied to achieve this goal. First, data vectors are reduced through pre-processing with PCA and autoencoder methods, and clustered by K-means with K-means++ initialization. In a second step, corresponding cluster boundaries are identified to globally align lithologic units. This assumes that cluster boundaries represent physical changes in lithology, without direct li

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Bobek, K. "Automatic Recognition of Lithological Units in Gas-bearing Shale Complex with Neural Networks (the Baltic Basin, Poland)." In Petroleum Geostatistics 2019. European Association of Geoscientists & Engineers, 2019. http://dx.doi.org/10.3997/2214-4609.201902195.

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Suppala, I., and P. Virransalo. "Use of Kohonen's self-organizing map to combine images of airborne geophysical data and to classify lithological units." In 54th EAEG Meeting. European Association of Geoscientists & Engineers, 1992. http://dx.doi.org/10.3997/2214-4609.201410570.

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Westeng, Kjetil, Yann Van Crombrugge, Christian Nilsen Lehre, Sopra Steria, Peder Aursand, and Egil Fjeldberg. "Robust and Automatic Shale Volume Interpretation Using Adaptive Lithological Thresholds Built on Depth Trends, Statistics, and Geological Units." In 2023 SPWLA 64th Annual Symposium. Society of Petrophysicists and Well Log Analysts, 2023. http://dx.doi.org/10.30632/spwla-2023-0123.

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The volume fraction of shale (VSH) throughout the well is of great importance for formation evaluation, geomechanics, and numerous other workflows. Neither porosity, saturation, nor permeability can be understood if one does not first have a good grasp of the VSH. The objective of this paper is a method for automated VSH calculation which is effective, un-biased, and to lesser degree affected by the log coverage in the well, as well as able to handle the variation in both radioactivity and density-neutron response as a function of depth and formation. The method combines statistics and dynamic

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Aristizábal Ceballos, Jaime Hernán, Elquier Enrique Sarmiento, Julián Fernando Chaves, and Fredy Alberto Rodríguez. "Determining the Corrosivity Index of the Electrolyte From the Management of the Weather-Related and Outside Force Threat." In ASME 2015 International Pipeline Geotechnical Conference. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/ipg2015-8554.

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With regard to hydrocarbon transmission lines, the analysis of susceptibility to external corrosion constitutes a fundamental tool in formulating management plans for the purpose of mitigating such threat by establishing protection barriers that are appropriate for the environmental characteristics identified. This document presents a perspective from the management of the Weather-related and Outside Force Threat as a contribution to the determination of the corrosivity index for the electrolyte by relating the lithological units of soils with their potential for generating electrochemical oxi

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Paszek, Martyna. "THE DIVERSITY OF VOLUMETRIC DENSITY IN SELECTED LITHOLOGICAL UNITS IN THE CU-AG DEPOSIT IN THE LUBIN-GLOGOW COPPER DISTRICT." In 18th International Multidisciplinary Scientific GeoConference SGEM2018. Stef92 Technology, 2018. http://dx.doi.org/10.5593/sgem2018/1.1/s01.069.

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Alyaaribi, Aflah, Mohammed Aamri, Mohamed Abdel Azim, Khalid Hinai, and Ali Al-Ghaithi. "Optimization of Hydraulic Stimulation Treatments of Tight Sandstone Gas Reservoirs in Oman with Geomechanical Sensitivity Analysis Using Analytical Simulation Techniques; A Case Study." In International Geomechanics Symposium. ARMA, 2023. http://dx.doi.org/10.56952/igs-2023-0008.

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Abstract The development of Oman's tight gas accumulation is a multifaceted endeavor, characterized by the utilization of fractured vertical wells targeting a multitude of hydrocarbon units. Additionally, highly deviated to horizontal wells have been employed to access the most impermeable zones within these units. The intrinsic geomechanical, petrophysical, and lithological complexities within these tight units profoundly influence not only the distribution of fracture conductivity but also the efficiency of gas drainage from these fractured zones. This is evident through variations in mobili

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Reports on the topic "Lithological Units"

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Dietiker, B., A. J.-M. Pugin, H. Crow, K. Brewer, and H. A. J. Russell. Geophysical data interpretation for the York University ATES site investigation, Ontario. Natural Resources Canada/CMSS/Information Management, 2024. http://dx.doi.org/10.4095/332366.

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Aquifer Thermal Energy Storage (ATES) systems have the potential of reducing heating and cooling energy consumption at institutional and commercial scales. ATES systems are popular in Europe, particularly in areas of extensive glacial and post glacial unconsolidated sediment. Southern Ontario shares numerous similarities with such settings. To support an ATES study at York University, Toronto, Ontario, three geophysical datasets were collected i) Microtremor analysis (the horizontal-to-vertical spectral ratio technique, HVSR), ii) seismic reflection, and iii) borehole geophysics. The three tec

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Robinson, P. T., and I. L. Gibson. Cyprus crustal study project, hole CY-2 lithologic unit summaries. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1987. http://dx.doi.org/10.4095/122585.

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Robinson, P. T., and I. L. Gibson. Cyprus crustal study project. Hole CY-2a lithologic unit summaries. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1987. http://dx.doi.org/10.4095/122586.

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Robinson, P. T. Cyprus crustal study project hole CY-4: lithologic unit summaries. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1989. http://dx.doi.org/10.4095/127323.

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Robinson, P. T., I. L. Gibson, and L. V. B. Horne. Cyprus Crustal Study Project Hole Cy - 1: Lithologic Unit Summaries. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1992. http://dx.doi.org/10.4095/133529.

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Robinson, P. T., I. L. Gibson, and L. V. B. Horne. Cyprus Crustal Study Project Hole Cy - 1a: Lithologic Unit Summaries. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1992. http://dx.doi.org/10.4095/133530.

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Connell, Sean D. Geologic map of the Albuquerque - Rio Rancho metropolitan area and vicinity, Bernalillo and Sandoval counties, New Mexico. New Mexico Bureau of Geology and Mineral Resources, 2008. http://dx.doi.org/10.58799/gm-78.

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This is the most comprehensive compilation of the geology of the Albuquerque Basin to be printed in 30 years. The area covered by this new compilation, though not as large as the earlier map, is presented at a scale nearly four times the detail (1:50,000 scale compared to the earlier map's 1:190,000 scale). This new geologic map is a compilation of sixteen 7.5-min USGS quadrangle maps and encompasses an area from Tijeras Arroyo on the south to Santa Ana Mesa north of Santa Ana and San Felipe Pueblos, and from the crest of the Sandia Mountains westward across the Rio Grande and onto the Llano d

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Map of major lithologic units in the Pacific Northwest; a contribution to the Interior Columbia Basin Ecosystem Management Project. US Geological Survey, 2001. http://dx.doi.org/10.3133/i2674.

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