Academic literature on the topic 'Lineament grid'
Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles
Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Lineament grid.'
Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.
You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.
Journal articles on the topic "Lineament grid"
1
Ni, Chunzhong, Shitao Zhang, Chunxue Liu, Yongfeng Yan, and Yujian Li. "Lineament Length and Density Analyses Based on the Segment Tracing Algorithm: A Case Study of the Gaosong Field in Gejiu Tin Mine, China." Mathematical Problems in Engineering 2016 (2016): 1–7. http://dx.doi.org/10.1155/2016/5392453.
Full textAbstract:
This study used the Segment Tracing Algorithm (STA) to extract lineaments from remotely sensed images. A computer program was then written to calculate the lineament densities and lengths. In Gaosong field, 3,233 lineaments were extracted based on a 200 m × 200 m grid size. The results indicate that most lineaments lengths are between 30 m and 50 m, and the number of lineaments within each cell ranges from 1 to 6. Areas with high distributions exist on both sides of the central region. According to the contour map of lineament length, the maximum lineament length is 380 m, and the minimum length is 30 m. The contours mainly extend in two directions, including NE and NW trends. This is consistent with the prominent NE and NW strike faults that prevail in the mining area. The results are similar to those obtained in the Machishui ore block, which has become a mine production area. High values of lineament length and density in the contour map of Gaosong field may be associated with hydrothermal tin mineralization in the study area. The results of this study potentially provide a new approach to mineral exploration in the early stage of geological prospecting.
2
Thyrsted, T. "Remote sensing - a new tool in exploration geology." Rapport Grønlands Geologiske Undersøgelse 128 (December 31, 1986): 135–46. http://dx.doi.org/10.34194/rapggu.v128.7930.
Full textAbstract:
Remote sensing techniques have been applied to mineral exploration in areas of South and East Greenland. The data consist of airborne and satellite-borne (Landsat) multispectral scanner images and geochemical and geophysical measurements interpolated into grid format and registered on the Landsat images. The main image processing methods applied include ratioing, principal component transformation/factor analysis and classification. In addition, visual and subsequent statistical analyses of lineaments were carried out on images from South Greenland. The results of the work include mapping of several hundred spectral anomalies which represent oxidation zones on the ground. The lineament analysis resulted in definition of major linear zones with increased lineament intensities; some of these zones may have geological significance. Supervised classification was carried out on an integrated data set consisting of images and geochemical/geophysical data. The training areas mainly included uranium showings, and the classified image depicts both previously known occurrences and a new area which is statistically similar to the training areas.
3
Cianfarra, Paola, Danilo Morelli, and Francesco Salvini. "Geostatistical Analysis of Lineament Domains: The Study Case of the Apennine Seismic Province of Italy." Geosciences 14, no. 5 (2024): 131. http://dx.doi.org/10.3390/geosciences14050131.
Full textAbstract:
Regional-scale swarms of subparallel linear topographic features, known as lineament domains, are a common feature of planetary surfaces. Lineament domains are superficial manifestations of the crustal stress field trajectory. Notably, one of the effects of active tectonics is seismicity. Italy is one of the most seismically active regions in the Mediterranean, with many destructive earthquakes that have occurred in past centuries. Here, we assess the seismic meaning of the main lineament domain in the tectonically active region of Central Italy. We describe the use of an automated analysis of satellite imagery coupled with spatial grid analysis to identify three lineament domains of the Central Apennines. Spatial and azimuthal comparisons of the main lineament domain (i.e., the Apennine Domain), with the known locations of earthquakes (moment magnitude of Mw > 5.5) that occurred during the past century, revealed the most seismically active tectonic areas and their spatial distributions. Further, we present a conceptual seismo-geodynamic model for the Central Apennines, which is characterized by regional arching and explains the presence of an extensional tectonic regime in the upper crustal layer of the active Apennines fold-and-thrust belt.
4
Fotze, Quentin Marc Anaba, Charles Antoine Basseka, Anatole Eugene Djieto Lordon, Albert Eyike Yomba, Yves Shandini, and Jean Marie Tadjou. "Geophysical Data Processing for the Delineation of Tectonic Lineaments in South Cameroon." Earth Science Research 8, no. 2 (2019): 1. http://dx.doi.org/10.5539/esr.v8n2p1.
Full textAbstract:
The processing of aeromagnetic and gravity data of the Northern part of Congo Craton (South Cameroon region), between latitudes 2°30’-3°30’ N and longitudes 12°-13° E, permitted the determination of the structural features ccurring within the Precambrian basement (Ntem Complex) southwards and the Pan-African belt (Yaounde Group) northwards. The maxima of the Horizontal Gradient within the study area, were obtained using the Blakely and Simpson method (1986). Those maxima were used to trace the magnetic lineaments of the study area. Furthermore, the Total Horizontal derivative of the Tilt derivative applied on the residual grid of Bouguer anomaly guaranteed the enhancement of linear structures which were automatically extracted using the CET Grid Analysis algorithm. The superimposition of both magnetic and gravity lineaments allowed us to display the structural framework of the area, whose major trending directions are E-W, ENE-WSW, and NE-SW. These major lineament directions are likely to be linked to one or more than a single tectonic event such as the ENE-WSW/NE-SW trends, considered as the subduction direction of the Congo craton beneath the Pan-African belt. These trends may be linked to the Eburnean orogeny and are also said to be connected to the Central African Shear Zone (CASZ). The geophysical lineaments identified in the study are defined as potential targets along which mineralization may have been formed, considering the economic potential of the area.
5
Yanis, Muhammad, Nazli Ismail, Laura Vadzla Hermansyah, Muhammad Nanda, and Faisal Abdullah. "Fault Mapping in Weh Island based on Fault Fracture Density Method (FFD)." Journal of Aceh Physics Society 8, no. 1 (2019): 6–10. http://dx.doi.org/10.24815/jacps.v8i1.12764.
Full textAbstract:
Pulau Weh merupakan pulau vulkanik yang dilalui jalur sesar aktif the Great Sumatran Fault. Keberadaan jalur sesar aktif pada suatu kawasan berimplikasi pada ancaman bahaya gempa bumi. Kami telah menggunakan data Digital Elevation Model (DEM) dari Shuttle Radar Topography Mission (SRTM) untuk pemetaan jalur-jalur sesar di Pulau Weh. Data DEM yang diproduksi oleh SRTM diekstrak menjadi hillshade dengan memberikan variasi sudut penyinaran matahari dan altitude 45o. Analisis topografi permukaan bumi memberikan penampakan gerusan-gerusan sesar dan rekahan. Selanjutnya kelurusan-kelurusan ditarik secara manual berdasarkan analisis sesar dan rekahan untuk tiap perbedaan sudut elevasi matahari pada hillshade. Kelurusan-kelurusan yang diperoleh dari tiap hillshade kemudian di-overlay. Berdasarkan jenisnya, kelurusan yang dianggap sebagai sesar dan rekahan diinterpretasi dengan memberikan grid 500 x 500 m. Dengan menggunakan metode FFD, didapatkan kelurusan-kelurusan yang berasosiasi dengan struktur atau merupakan refleksi gambaran topografi berupa kelurusan sungai, kelurusan lembah, struktur sesar maupun rekahan, kontak batuan dan kemunculan manifestasi panas bumi. Terdapat empat lokasi yang memiliki nilai anomali densitas kelurusan tinggi. Dominasi kelurusan yang terdapat di Pulau Weh yaitu Barat Laut-Tenggara. Arah dominan ini bersesuaian dengan arah Sesar Sumatera. Weh Island is a volcanic island crossed by the Great Sumatran Fault. Presence of such active fault may trigger seismic hazard on the island. We have applied Digital Elevation Model (DEM) from Shuttle Radar Topography Mission (SRTM) data to delineate fault distribution in Weh Island. The DEM data produced by SRTM were extracted as hillshade using variation of sun irradiation angels and altitude 45 o. Surface topographic analysis provided fractures and faults signatures on the study area. The faults and fractures lineament were drawn manually for each angle on the hillshades. The lineaments for each hillshade were overlaid. Using Fault Fracture Density (FFD) method we found lineaments associated as geological structures reflected from rivers, valleys, faults, fractures, rock contacts, and geothermal manifestations. There are four locations with high density lineaments on the island. The lineaments mostly directed in Northwest-Southeast which is same direction as the Great Sumatran Fault. Keywords: DEM, SRTM, geomorphology, the Great Sumatran Fault.
6
Sharma, Vaibhav, Rajib Sarkar, and Aniket Prakash. "Probabilistic Assessment of Seismic Hazard for Uttarakhand State of India." Journal of the Geological Society of India 100, no. 4 (2024): 531–42. http://dx.doi.org/10.17491/jgsi/2024/173870.
Full textAbstract:
Abstract Uttarakhand state of India, being located in the seismically active Himalayan mountain range, is highly prone to seismic hazards. This study presents assessment of seismic hazard of Uttarakhand through probabilistic approach. For conducting this study, a homogenous earthquake catalogue for moment magnitude during the period 1953 - 2020 with magnitude range of 2.0 - 6.9 consisting of 522 events was used. Various geological structures viz. folds, faults and lineament as well as thrust, have been identified in the associated regions. The state was divided into several grid points and the seismic hazard was evaluated for each of the grid points through probabilistic method. Finally, based on the analysis results, bedrock level hazard maps were developed for the state for contingency level earthquake (CLE) and maximum credible earthquake (MCE). The estimated peak ground acceleration (PGA) of the state is in the range of 0.16g-0.52g for CLE and the PGA varies for 0.20g-0.61g for MCE level earthquake. Main Central Thrust (MCT), Sunder Nagar fault and Ropar fault were observed to be more hazardous in the northern region of the state.
7
Mouzong Pemi, Marcelin, Joseph Kamguia, Severin Nguiya, and Eliezer Manguelle-Dicoum. "Depth and Lineament Maps Derived from North Cameroon Gravity Data Computed by Artificial Neural Network." International Journal of Geophysics 2018 (July 5, 2018): 1–13. http://dx.doi.org/10.1155/2018/1298087.
Full textAbstract:
Accurate interpretation of geological structures inverted from gravity data is highly dependent on the coverage of the recorded gravity data. In this work, Artificial Neural Networks (ANNs) are implemented using Levenberg-Marquardt algorithm (LMA) to construct a background density model for predicting gravity data across Northern Cameroon and its surroundings. This approach yields statistical predictions of gravity values (low values of errors) with 97.48%, 0.10, and 0.89, respectively, for correlation, Mean Bias Error, and Root Mean Square Error for two inputs (latitude, longitude) and 97.08%, 0.13, and 1.14 for three inputs (latitude, longitude, and elevation) for a set of anomalies as output. The model validation is obtained by comparing the results to other classical approaches and to the computed Bouguer, lineaments, and Euler maps obtained from measured gravity data. The depth of most of the deep faults and their orientation are in agreement with those obtained from other studies. The results achieved in this study establish the possibility of enhancing the quality of the analysis, interpretation, and modeling of gravity data collected on sparse grid of recording stations.
8
Ammar, Ammar A. "Influence of the Lineament Geological Features on the Hydrologic Flow Direction of Wadi Al Kuf Catchment Area, Cyrenaica, Northeastern Libya." AL-MUKHTAR JOURNAL OF SCIENCES 34, no. 3 (2019): 153–64. http://dx.doi.org/10.54172/mjsc.v34i3.276.
Full textAbstract:
Wadi Al Kuf Catchment Area WKCA is one of the largest watershed basins on Al Jabal al Akhdar Cyrenaica anticlinorium, the area is more than 960Km2, and considers as a semi-wet basin. This basin highly affected with lineaments geological features just like morphometric and tectonics types including fissures, fault systems and joints set systems in the highly karst lime stones of Al Jabal al Akhdar group lithological formations. These lineaments phenomena were measured and extracted from the radar images of digital terrain model of 30 meters space grid, and the hyper spectral Landsat 8 of 15 meters pixel resolution, they were processed and interpreted by several geospatial geomatics and geological software. The direction orientation and the rock density of these fissures, fractures, joints set systems, faults and the morphometric dendritic drainage pattern had been measured and illustrated from the rose diagram analysis and the geological map. The mainstream of this catchment area WKCA is the 6th order and mainly parallel to the main trend direction with the first escarpment circular fault at the major orogeny tectonic fault of Al Jabal al Akhdar uplift, and these lineaments features is averaged 58.3o with the azimuth degree along the mainstream. The drainage density, lineaments density analysis and distribution of the WKCA have been classified as low lineaments rock fractures in the eastern boundary of the basin, moderate lineaments rock fissures in the middle of the basin and high density of rock fracture in the western and northern boundary of the basin, these had reflected the deep percolations and infiltrations to the ground water-bearing aquifer in the WKCA through the secondary and the tertiary porosity of the hydrological karst system.
9
Mussa, Kassim Ramadhani, Ibrahimu Chikira Mjemah, and Revocatus Lazaro Machunda. "Open-Source Software Application for Hydrogeological Delineation of Potential Groundwater Recharge Zones in the Singida Semi-Arid, Fractured Aquifer, Central Tanzania." Hydrology 7, no. 2 (2020): 28. http://dx.doi.org/10.3390/hydrology7020028.
Full textAbstract:
This study attempted to delineate and map potential groundwater recharge zones of the Singida, semi-arid, fractured crystalline basement aquifer using open source remote sensing and GIS software. Various thematic maps such as lithology/hydrogeology, soil, land-cover/use, slope, lineament density, drainage density and rainfall distribution were integrated in QGIS software. Vector input layers were rasterized and resampled using QGIS wrap projection function to make sure that the grid cells are of the same size. Reclassification using SAGA and GRASS reclass algorithms in QGIS was carried out to realign the factor classes in a consistent scale, and reclassification to a scale of 1 to 5 was carried out to harmonize the results. The study identified a number of potential areas for groundwater recharge, groundwater exploration, groundwater development and potential areas for artificial groundwater recharge. Potential groundwater recharge zones for the Singida semi-arid fractured aquifer are restricted to areas with high lineament density, cultivated areas, grassland and flat to gentle slopes. The potential of groundwater recharge is also observed in areas with low drainage density. The delineated zones provide a good understanding of the potential recharge zones, which are a starting point for recharge zone protection. This blended approach can be utilized for carrying out suitability analysis using the weighted overlay analysis approach. Areas designated good and very good are recommended for artificial recharging structures as an alternative technique for enhancing groundwater recharge through rainwater harvesting. This will help to augment groundwater storage in this semi-arid environment.
10
Augie, Abdulrahaman Idris, K. A. Salako, A. A. Rafiu, and M. O. Jimoh. "Integrated Geophysical Investigation for Potential Gold Mineralised Zone within Lower Part of Zuru Schist Belts, NW Nigeria." Nigerian Journal of Physics 33, S (2024): 1–14. http://dx.doi.org/10.62292/njp.v33(s).2024.212.
Full textAbstract:
The study began with a reconnaissance survey that used high-resolution aeromagnetic data of the study area to identify suitable structure zones with the potential to trap mineral resources within the context of the gold exploration target. The findings of magnetic studies were followed up with detailed investigations using 2D electrical resistivity tomography (ERT) and induced polorisation (IP) techniques to reveal further details about gold mineral zones and other lithological boundaries. The airborne magnetic data of sheet 118_Yelwa was obtained from the NGSA; these datasets were processed and analyzed using Oasis Montaj's first vertical derivative (FVD) and center for exploration targeting (CET) techniques. Results of FVD and CET grid anomalies show that regions of major magnetic structures (lineaments) are associated with granite gneiss, migmatitic augen gneiss, and medium to coarse-grained biotite when compared to the geological settings of the area. The zones of major structures obtained in this study coincided with previous magnetic studies of the area, located in the eastern parts of Ngaski, Yauri (Yelwa), Shanga, Agwara, as well as Magama's northwest region. Some of the regions for lineament (in the eastern part of Ngaski/Yauri) were investigated further with 2D ERT and IP detailed geophysical methods in a dipole-dipole configuration. The results of geoelectric techniques along profiles 1, 2, and 3 identified the major gold mineralisation potential zones, which were labeled A1, A2, and A3. These regions have low/high resistivity (1.6 to 459 Ωm/1889 to 7773 Ωm) and chargeability signatures (≥ 20 msec), and could thus be interpreted as potential target zones for metallic mineral exploration, particularly gold mineralisation. The regions are located in the northern Mararraba and southwest of the Jinsani areas of Kebbi State. The results of integrated geophysical methods have produced updated structural features of the regions, as well as a database containing precise locations, lateral lengths,...
Book chapters on the topic "Lineament grid"
1
Illés-Almár, Erzsébet. "Lineament Grid." In Encyclopedia of Planetary Landforms. Springer New York, 2014. http://dx.doi.org/10.1007/978-1-4614-9213-9_482-1.
Full text
2
Illés-Almár, Erzsébet. "Lineament Grid." In Encyclopedia of Planetary Landforms. Springer New York, 2015. http://dx.doi.org/10.1007/978-1-4614-3134-3_482.
Full text
3
Erener, Arzu, Gulcan Sarp, and Sebnem H. Duzgun. "Use of GIS and Remote Sensing for Landslide Susceptibility Mapping." In Encyclopedia of Information Science and Technology, Fourth Edition. IGI Global, 2018. http://dx.doi.org/10.4018/978-1-5225-2255-3.ch304.
Full textAbstract:
In recent years, geographical information systems (GISs) and Remote Sensing (RS) have proven to be common tools adopted for different studies in different scientific disciplines. GIS defined as a set of tools for the input, storage, retrieval, manipulation, management, modeling, analysis and output of spatial data. RS, on the other hand, can play a role in the production of a data and in the generation of thematic maps related to spatial studies. This study focuses on use of GIS and RS data for landslide susceptibility mapping. Five factors including Normalized Difference Vegetation Index (NDVI) and Topographic Wetness Index (TWI), slope; lineament density and distance to roads were used for the grid based approach for landslide susceptibility mappings. Results of this study suggest that geographic information systems can effectively be used to obtain susceptibility maps by compiling and overlaying several data layers relevant to landslide hazards.
4
Erener, Arzu, Gulcan Sarp, and Sebnem H. Duzgun. "Use of GIS and Remote Sensing for Landslide Susceptibility Mapping." In Advances in Environmental Engineering and Green Technologies. IGI Global, 2019. http://dx.doi.org/10.4018/978-1-5225-7359-3.ch026.
Full textAbstract:
In recent years, geographical information systems (GISs) and remote sensing (RS) have proven to be common tools adopted for different studies in different scientific disciplines. GIS is defined as a set of tools for the input, storage, retrieval, manipulation, management, modeling, analysis, and output of spatial data. RS, on the other hand, can play a role in the production of a data and in the generation of thematic maps related to spatial studies. This study focuses on use of GIS and RS data for landslide susceptibility mapping. Five factors including normalized difference vegetation index (NDVI) and topographic wetness index (TWI), slope, lineament density, and distance to roads were used for the grid-based approach for landslide susceptibility mappings. Results of this study suggest that geographic information systems can effectively be used to obtain susceptibility maps by compiling and overlaying several data layers relevant to landslide hazards.
Conference papers on the topic "Lineament grid"
1
Lavenu, Arthur P. C., Alan Irving, Elena Niculescu, Nepal Singh, Amirul Kusyairi, and Hela Douik. "Modeling Fractures in a Heterogeneous Carbonate Reservoir Onshore UAE: A Case Study." In ADIPEC. SPE, 2023. http://dx.doi.org/10.2118/216679-ms.
Full textAbstract:
Abstract A brown field producing from an Upper Cretaceous carbonate reservoir in an elongated anticline is facing water management challenges (increasing water cut, premature water breakthrough), impacting production and recovery. The complexity of heterogeneities encountered in the reservoir (fractures, karst-related features, high permeability dolomitic drains), where depositional settings, diagenesis, and tectonics are intertwined, makes reservoir characterization critical to a successful field development plan. Evidence of dual medium behavior, combined with the presence of fractures from image logs, suggests that fractures may play an important role in reservoir dynamics, and hence need to be modeled appropriately. In this study, the scope of work was threefold: reviewing the conceptual fracture model in considering the latest data, creating updatable workflows to build discrete fracture networks in commercial geomodeling software, and, ultimately, comparing upscaled properties to well test interpretations representing "fracture" and "matrix" responses. Main fracture sets trend NE-SW, parallel to the anticline axis, and E-W. Two fracture scales have been modeled in the present case study: large features that relate to the deterministic component of the dataset (fracture clusters from image log interpretation and seismic lineaments), and small-scale fractures, stochastically distributed, to reflect the permeability contribution of diffuse fractures connecting deterministic objects. Calibration to dynamic data is performed by analytical estimation of fracture aperture per fracture orientation set, upscaling to equivalent grid permeability, and iterating until reaching a satisfactory match with the test-derived permeability. The calibration exercise gives a consistent fracture aperture for the two orientation sets tested (NE-SW and E-W). Fracture modeling was done in parallel to building reservoir matrix properties hence the dynamic calibration considers only fracture permeability. In some cores, measured permeability can reach several Darcies, leading to dual medium behavior without the contribution of fractures. Future work could integrate this analysis with existing sedimentology and reservoir dynamic syntheses to assess the relative impact of high permeability streaks on equivalent permeability and deconvolve it from the role of fractures.
2
Anindita, I. "An Integrated Approach Towards Digital Outcrop Method In Natural Fracture Characterization: An Example From The Pre-Tertiary Alas Formation of North Sumatra Basin." In Indonesian Petroleum Association - 46th Annual Convention & Exhibition 2022. Indonesian Petroleum Association, 2022. http://dx.doi.org/10.29118/ipa22-g-161.
Full textAbstract:
Naturally fractured reservoirs are considered problematic particularly when it comes to understanding their behaviour, including the various length scales, distribution, and different intensities, presenting challenges in the modelling and flow simulation due to the limited data coverage and resolution from well and seismic data. Pre-Tertiary sediments of North Sumatra Basin still remain unexplored hydrocarbon potential and provide a prominent outcrop information to be utilized as an analogue to evaluate natural fractures characteristics and attributes. By incorporating traditional fieldwork with digital data acquisition, a 3D model was built based on orientation, geometry, as well as density parameters, resulting in a comprehensive fracture model that can be used to constrain subsurface interpretation. The Pre-Tertiary Alas Formation in the Pintu Angin area is comprised predominantly of meta-limestone sediment, deposited during late syn-rift to early post-rift stage of deformation. A total of 1006 m x 462 m coverage area was investigated, using a combination of photogrammetry and field data measurement. The fractures were recognized as veins, open fractures (extension), and shear fractures with length ranging from tens to hundreds of meters, generating a total of 99 major fracture planes interpreted as a basis for structural framework and classification model. Four major structural lineaments trends were identified of orientation NW-SE, NNW-SSE, N-S, and NE-SW. In addition, the structural model suggested that our study area was formed as part of a dextral strike-slip fault, with fracture intensity showing 7 – 10 fractures per grid (5 x 5 m) adjacent to the faults and the development of the fractures were thought to have been strongly influenced by the distance of the fault and surface deformation both laterally and vertically, constrained by data distribution. This approach reveals that fracture characterization using outcrop analogue can be used to represent the distribution in the subsurface, hence can assist fluid flow simulation for the reservoir model. The utilization of Digital Outcrop Model (DOM) demonstrates that this method has the advantage of predicting the subsurface fractures trend by correlating the fracture intensity with vertical and horizontal distance from the fault.