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Journal articles on the topic 'Depth-to-Basement'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Meixner, Tony, and Indrajit G. Roy. "A new automated method to determine depth to magnetic basement – the Gawler Craton depth to basement map." ASEG Extended Abstracts 2010, no. 1 (2010): 1. http://dx.doi.org/10.1081/22020586.2010.12041842.

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2

Al-Hadithi, Shams J., and Ahmed S. Al-Banna. "Using Source Parameter Imaging Technique to the Aeromagnetic Data to Estimate the Basement Depth of Tharthar Lake and Surrounding Area in Central Iraq." Iraqi Geological Journal 55, no. 1F (2022): 151–59. http://dx.doi.org/10.46717/igj.55.1f.12ms-2022-06-27.

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This research aims to determine the depth of basement rock at Tharthar Lake and its surroundings. The magnetic data were utilized to determine basement depth using the Source Parameter Imaging and the Half-width methods. Using the GeoSoft-Oasis Montaj software version 8.4 application, the total magnetic intensity of the area was converted to the Reduction to Pole, then the Source Parameter Imaging was calculated. Three grids (dx, dy, and dz) were obtained. These grids then are used as input grids for Source Parameter Imaging computations. The resulting Source Parameter Imaging depth map reveal

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3

Al-Bahadily, Hayder A., and Ali M. Al-Rahim. "Depth-to-Basement Estimates Using Magnetic Data of the Iraqi Southern Desert: A Statistical Approach." IOP Conference Series: Earth and Environmental Science 1300, no. 1 (2024): 012004. http://dx.doi.org/10.1088/1755-1315/1300/1/012004.

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Abstract Regions characterized by a considerable thickness of sedimentary cover situated on a basement complex are always interesting. These regions require accurate basement data that includes defining the locations of high thicknesses in sedimentary beds (the basins). The Southern Desert of Iraq is one of these regions that is still subject to more detailed studies concerning basement geology. Utilizing the magnetic data, we present five depth-to-basement maps using techniques that hold different theoretical assumptions and model characterizations. Further, we have obtained a sixth map using

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4

Simpson, Janelle, and Roger Cant. "Depth to Basement calculation in Southern Thomson, QLD." ASEG Extended Abstracts 2013, no. 1 (2013): 1–4. http://dx.doi.org/10.1071/aseg2013ab220.

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5

Martins, Cristiano M., Valeria C. Barbosa, and João B. Silva. "Simultaneous 3D depth-to-basement and density-contrast estimates using gravity data and depth control at few points." GEOPHYSICS 75, no. 3 (2010): I21—I28. http://dx.doi.org/10.1190/1.3380225.

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We have developed a gravity-inversion method for simultaneously estimating the 3D basement relief of a sedimentary basin and the parameters defining a presumed parabolic decay of the density contrast with depth in a sedimentary pack, assuming prior knowledge about the basement depth at a few points. The sedimentary pack is approximated by a grid of 3D vertical prisms juxtaposed in both horizontal directions of a right-handed coordinate system. The prisms’ thicknesses represent the depths to the basement and are the parameters to be estimated from the gravity data. To estimate the parameters de

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6

Hidalgo-Gato, Marlon C., Valéria C. F. Barbosa, and Vanderlei C. Oliveira. "Magnetic amplitude inversion for depth-to-basement and apparent magnetization-intensity estimates." GEOPHYSICS 86, no. 1 (2021): J1—J11. http://dx.doi.org/10.1190/geo2019-0726.1.

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We have developed an inversion method to recover the depth and the total magnetization intensity of the basement under a sedimentary basin using the amplitude of the magnetic anomaly vector (amplitude data). Because the amplitude data are weakly dependent on the magnetization direction, our method is suitable for interpreting areas with remanent magnetization. Our method assumes constant magnetized basement rocks overlain by nonmagnetic sediments. To overcome the inherent ambiguity of potential field data, we assume knowledge of the average depth of the basement and use it as a constraint to r

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7

Skilbrei, Jan R. "Reply by the author to N. C. Steenland." GEOPHYSICS 59, no. 5 (1994): 852. http://dx.doi.org/10.1190/1.1487011.

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Steenland writes that my statement in paragraph three of my Introduction is not correct. My statement is, “In most geological situations, and particular over sedimentary basins, the interpreter is unable to recognize bodies with limited depth extents.” It was implicit that I meant bodies within the basement with limited depth extents because the title of the short note is: “The straight‐slope method for basement depth determination revisited.” I believe that most interpreters agree with my statement. However, when it comes to recognizing intrasedimentary volcanics, I agree that it is often eas

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8

Al-Khalidi, Abdulrahman, Ali Al-Rahim, and Ahmed Mousa. "Estimating the Depth to the Basement of Anah and Its Surroundings Area, Western Iraq by Using the Source Parameter Imaging and Power Spectrum Techniques." Iraqi Geological Journal 56, no. 2A (2023): 225–36. http://dx.doi.org/10.46717/igj.56.2a.17ms-2023-7-26.

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The varying characteristics of the Precambrian basement rocks and the depth thickness variation of sedimentary cover are significant for geological structure. The Aeromagnetic data interpreted in order to delineate the depth of the basement of Anah and the surrounding areas by using Source Parameter Imaging Technique. Aeromagnetic data Total Magnetic Intensity were processed by using the Reduction to the pole, and Source Parameter Imaging tool which was applied to RTP data. The results of Source Parameter Imaging showed that the minimum depth of basement rocks in the study area was about 5500

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9

Zhdanov, Michael S., Michael Jorgensen, and Le Wan. "Three-Dimensional Gravity Inversion in the Presence of the Sediment-Basement Interface: A Case Study in Utah, USA." Minerals 12, no. 4 (2022): 448. http://dx.doi.org/10.3390/min12040448.

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We introduce a novel approach to three-dimensional gravity inversion in the presence of the sediment-basement interface with a strong density contrast. This approach makes it possible to incorporate the known information about the basement depth in the inversion. It also allows the user to determine the depth-to-basement in the initial inversion phase. One can then use this interface to constrain the final inversion phase. First, the inversion generates the depth-to-basement model based on the 3D Cauchy-type integral representation of the gravity field. Then, in the second phase, full 3D voxel

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10

Ramadhani, R. A., S. Bijaksana, S. J. Fajar, et al. "Magnetic Basement Modeling at Karimata Strait Using MagB_Inv." IOP Conference Series: Earth and Environmental Science 1437, no. 1 (2024): 012016. https://doi.org/10.1088/1755-1315/1437/1/012016.

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Abstract Indonesia is a country with abundant natural resources, such as tin, which is associated with granite rocks. Granite can be found under sedimentary rocks as basement rock. The depth of the magnetic basement will provide a value that indicates the location or presence of granite rock. This research is expected to be possible to identify the depth of the magnetic basement in the Karimata Strait area and obtain a relationship between the results of magnetic basement modeling using the MagB_Inv program and the regional geological structure in the Karimata Strait area. Based on magnetic an

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11

Salem, Ahmed, Chris Green, Samuel Cheyney, J. Derek Fairhead, Essam Aboud, and Simon Campbell. "Mapping the depth to magnetic basement using inversion of pseudogravity: Application to the Bishop model and the Stord Basin, northern North Sea." Interpretation 2, no. 2 (2014): T69—T78. http://dx.doi.org/10.1190/int-2013-0105.1.

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Magnetic depth estimation methods are routinely used to map the depth of sedimentary basins by assuming that the sediments are nonmagnetic and underlain by magnetic basement rocks. Most of these methods generate basement depth estimates at discrete points. Converting these depth estimates into a grid or map form often requires the application of qualitative methods. The reason for this is twofold: first, in deeper parts of basins, there is generally a scarcity of depth estimates and those that have been determined tend to be biased toward the shallower basement structures close to the basin ed

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12

Silva-Ávalos, Raúl Ulices, Hugo Enrique Júnez-Ferreira, Julián González-Trinidad, and Carlos Bautista-Capetillo. "Non-Linear 3D Satellite Gravity Inversion for Depth to the Basement Estimation in a Mexican Semi-Arid Agricultural Region." Applied Sciences 12, no. 14 (2022): 7252. http://dx.doi.org/10.3390/app12147252.

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In Mexico, agriculture in semi-arid regions is highly dependent on groundwater resources, where most of the aquifers’ characterization is a pending task. In particular, the depth to the basement is unknown for most of the Mexican territory. Hence, the development and performance of new techniques for the basement relief estimation is imperative for further hydrogeological studies. In this paper, we present a depth to the basement estimation using non-linear gravimetric inversion employing satellite data. Gravity forward modeling was implemented using both gravitational attraction due to juxtap

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13

Maus, Stefan, K. P. Sengpiel, B. Röttger, B. Siemon, and E. A. W. Tordiffe. "Variogram analysis of helicopter magnetic data to identify paleochannels of the Omaruru River, Namibia." GEOPHYSICS 64, no. 3 (1999): 785–94. http://dx.doi.org/10.1190/1.1444588.

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The geomagnetic field over sedimentary basins is very sensitive to variations in basement depth. Therefore, magnetic surveys are widely used to map basement topography in petroleum and groundwater exploration. We propose variogram analysis as a more accurate alternative to power spectral methods. Data variograms are computed from aeromagnetic flight‐line data. To estimate depth, the data variograms are compared with model variograms for a range of source depths. We use the exact space domain counterparts of a fractal power spectral model as model variograms. To demonstrate the utility of this

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14

Lyrio, Julio Cesar S. O., and Yaoguo Li. "Basement Mapping Using Nonlinear Gravity Inversion with Borehole and Seismic Constraints." Minerals 13, no. 9 (2023): 1173. http://dx.doi.org/10.3390/min13091173.

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We present an integrated method for mapping the basement structures of sedimentary basins by combining surface gravity data, seismic imaging, and borehole logging information. The core of the method is a nonlinear inversion algorithm for constructing the shape and depth of the basement from surface gravity data. By using the primal-logarithmic barrier method, we impose depth constraints from the borehole information. The basement depth was imaged by seismic interpretation and incorporated into the inversion as a reference model. As a result, the gravity inversion constructs basement structures

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15

Ariesti, Faradilla Thelma, and Hendra Grandis. "Iterative 2D Gravity Modelling for Basement Depth Estimation." IOP Conference Series: Earth and Environmental Science 1031, no. 1 (2022): 012014. http://dx.doi.org/10.1088/1755-1315/1031/1/012014.

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Abstract In gravity modelling, iterative refinement of 2D basement geometry is a classical problem where the density contrast has to be determined in advance. We present a relatively simple method to estimate 2D basement depth along with its density contrast. Known basement depths at several points and their associated gravity anomalies determine the gravity - depth relationship that is used to obtain the first estimate of the overall basement depth. The initial model response is calculated with a unitary density. The linear regression between calculated model response and actual gravity data

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16

Ibe, Alexander Omenikolo, Theophilus Emberga Terhemba, and Iheanyichukwu Opara Alexander. "Basement depth re-valuation of anomalous magnetic bodies in the lower and middle Benue trough using Euler deconvolution and spectral inversion techniques." World Journal of Advanced Research and Reviews 14, no. 2 (2022): 129–45. https://doi.org/10.5281/zenodo.7186181.

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Spectral technique and Euler Deconvolution were applied to high-resolution aeromagnetic data of parts of Benue trough to estimate the depth of anomalous magnetic sources within the study area; Data enhancement techniques such as total magnetic intensity map, reduction to pole, regional-residual separation and upward continuation maps were employed to identify different magnetic anomalies, structural trends representing the tectonics of the location were observed trending NE-SW and N-S directions; The result of 3D Euler deconvolution for the structural index (SI) = 0, 1, 2, 3 gave depths to mag

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17

Djieto Lordon, Anatole Eugene, Mbohlieu YOSSA, Christopher M. Agyingi, Yves Shandini, and Thierry Stephane Kuisseu. "Geometrical Characterisation of the Mamfe Basin, Cameroon, from the Earth, Gravitational Model (EGM 2008)." Earth Science Research 7, no. 1 (2018): 94. http://dx.doi.org/10.5539/esr.v7n1p94.

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Gravimetric studies using the ETOPO1-corrected high resolution satellite-based EGM2008 gravity data was used to define the surface extent, depth to basement and shape of the Mamfe basin. The Bouguer anomaly map was produced in Surfer 11.0. The Fast Fourier Transformed data was analyzed by spectral analysis to remove the effect of the regional bodies in the study area. The residual anomaly map obtained was compared with the known geology of the study area, and this showed that the gravity highs correspond to the metamorphic and igneous rocks while the gravity lows match with Cretaceous sediment

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18

Silva, João B., Denis C. Costa, and Valéria C. Barbosa. "Gravity inversion of basement relief and estimation of density contrast variation with depth." GEOPHYSICS 71, no. 5 (2006): J51—J58. http://dx.doi.org/10.1190/1.2236383.

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We present a method to estimate the basement relief as well as the density contrast at the surface and the hyperbolic decaying factor of the density contrast with depth, assuming that the gravity anomaly and the depth to the basement at a few points are known. In both cases, the interpretation model is a set of vertical rectangular 2D prisms whose thicknesses are parameters to be estimated and that represent the depth to the interface separating sediments and basement. The solutions to both problems are stable because of the incorporation of additional prior information about the smoothness of

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19

Menezes Novais, Diego, Joelson Da Conceição Batista, and Milton José Porsani. "Gravimetric inversion applied to the study of the basement relief of the Recôncavo-Tucano-Jatobá Rift System in Northeast Brazil." Revista de Geociências do Nordeste 10, no. 1 (2024): 57–71. http://dx.doi.org/10.21680/2447-3359.2024v10n1id34802.

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This article presents results from the implementation of an inverse modeling algorithm that considers the Bouguer anomaly signal to estimate and gain a better understanding of the boundary between the sedimentary package and the basement of the sub-basins within the Recôncavo-Tucano-Jatobá rift system. The algorithm for modeling the basement relief is considered a medium constituted by a set of discrete two-dimensional prisms with fixed density contrasts between sediment and basement and variable depth. Initially, it was applied to synthetic models, resulting in depth variation curves of the b

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20

HASSAN, Ahmed Gamal Mohamed, and Karam Samir Ibrahim FARAG. "Multi-stage 3D Gravity Inversion Scheme for Maximum Optimization of the Subsurface Basement Model at Gebel El-Zeit Basin, Southwestern Gulf-of-Suez, Egypt." NEWS of the Ural State Mining University, no. 4 (December 15, 2023): 19–39. http://dx.doi.org/10.21440/2307-2091-2023-4-19-39.

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Relevance and purpose of the work. Due to its basement fault block pattern in the sedimentary basin, the Southwestern Gulf of Suez’s Gebel El-Zeit basin is one of Egypt’s most desirable hydrocarbon concessions. However, salt diapers in sedimentary layers have hindered seismic interpretations in this area, making it challenging to build a 3D central primary basinal structure. This study uses Bouguer gravity anomalies to input basement complex lateral density model assumptions to determine the optimal three-dimensional basement depth for the study area. Research methodology. Based on the concept

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21

John, U.Megwara, and E. Udensi Emmanuel. "FRACTAL CHARACTERIZATION OF BASEMENT TOPOGRAPHY: APPLICATION TO PARTS OF SOUTHERN BIDA BASIN, NIGERIA AND THE SURROUNDING BASEMENT ROCKS." Continental J. Applied Sciences 8, no. 2 (2013): 7–25. https://doi.org/10.5281/zenodo.853102.

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Determination of basement relief using fractal method was carried out over parts of southernBida basin, Nigeria and the surrounding basement rocks. The research covered both basin and basement rock sections. The number of data points used for analysis were 2,937, obtained from the digitization of eleven ½ degrees by ½ degrees aeromagnetic contour maps. Data processing methods used in the study include regional‒residual separation of the total magnetic intensity data, determination of depth‒to‒top and depth‒to‒bottom of magnetic sources and estimation of source scaling exponent using the Fracta

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22

Abbas, Mohamed, Rabeh Rabeh, Tharwat Abdel Hafeez, and Tarek Hamed. "Basement Depth Map Estimation and Linear Features Detection Depending on Interpretation of Magnetic Data at Qarun Oil Field and Surrounding Areas, North Western Desert, Egypt." Iraqi Geological Journal 57, no. 2C (2024): 152–70. http://dx.doi.org/10.46717/igj.57.2c.12ms-2024-9-20.

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This investigation primarily targets a specific area situated in the northeastern Western Desert and northwest Beni-Suef, covering Wadi Al Rayan area, Gindi basin, Kattaniya inversion, and El-Fayum depression. It extends to the east of the river Nile. This study aims to Evaluate the depth of the basement complex in the area under investigation. The total aeromagnetic intensity data was reduced to the north pole (RTP) for clarity. 2D modeling of this RTP data was then used to evaluate the basement depth. The analysis of basement depth maps revealed significant variations in the subsurface struc

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23

Connors, Karen, Cedric Jorand, Peter Haines, Yijie Zhan, and Lynn Pryer. "Uncovering the Canning Basin: a new comprehensive SEEBASE® model." APPEA Journal 58, no. 2 (2018): 793. http://dx.doi.org/10.1071/aj17073.

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A new regional scale SEEBASE® model has been produced for the intracratonic Canning Basin, located in the north of Western Australia. The 2017 Canning Basin SEEBASE model is more than an order of magnitude higher resolution than the 2005 OZ SEEBASE version — the average resolution is ~1 : 1 M scale with higher resolution in areas of shallow basement with 2D seismic coverage — such as the Broome Platform and Barbwire Terrace. Post-2005 acquisition of potential field, seismic and well data in the Canning Basin by the Geological Survey of Western Australia (GSWA), Geoscience Australia and industr

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24

Tarlowski, C., and I. Koch. "On the problem of estimating the depth to the magnetic basement." GEOPHYSICS 53, no. 10 (1988): 1362–63. http://dx.doi.org/10.1190/1.1442415.

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In many applications in aeromagnetics, the estimation of the depth to the crystalline magnetic basement is of great importance. Of many approaches to this problem, the most widely applied appear to be based upon Fourier analysis (see Ruotoistenmäki, 1987) or on fitting hypothetical models to observed data using a least‐squares principle (for example, Leite and Leão, 1985). Recently, some interest has been focused on direct approaches to the problem (Strakhov and Brodsky, 1986; Koch and Tarlowski, 1986; and Jonca and Vogel, 1987).

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25

Li, Qiang, Rui Wang, Guowei Li, and Zhengwei Xu. "Depth-to-basement Estimation of Basin Relief Using the BP Network." Journal of Physics: Conference Series 2651, no. 1 (2023): 012159. http://dx.doi.org/10.1088/1742-6596/2651/1/012159.

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Abstract Nonlinear gravity inversion is a popular method for determining basin bottom relief and delineating basin configuration. However, traditional gravity inversion presents certain challenges, including the complexity and time demand of calculating and transforming large matrices, as well as instability and non-uniqueness caused by the inherently ill-posed nature of inversion problems. Over the past decade, deep learning, a subset of machine learning, has seen successful applications in geophysical interpretation and exploration. In this study, we propose an innovative method for estimati

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26

John, U.Megwara, and E. Udensi Emmanuel. "FRACTAL CHARACTERIZATION OF BASEMENT TOPOGRAPHY: APPLICATION TO PARTS OF SOUTHERN BIDA BASIN, NIGERIA AND THE SURROUNDING BASEMENT ROCKS." Continental J. Applied Sciences 8, no. 2 (2013): 7–25. https://doi.org/10.5281/zenodo.3598685.

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Determination of basement relief using fractal method was carried out over parts of southern Bida basin, Nigeria and the surrounding basement rocks. The research covered both basin and basement rock sections. The number of data points used for analysis were 2,937, obtained from the digitization of eleven ½ degrees by ½ degrees aeromagnetic contour maps. Data processing methods used in the study include regional‒residual separation of the total magnetic intensity data, determination of depth‒to‒top and depth‒to‒bottom of magnetic sources and estimation of source scaling exponent u

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27

Aktarakçi, Hasan Kâmil, Norman Harthill, and Mark W. Blohm. "Time‐domain electromagnetic survey for gold exploration, Nevada." GEOPHYSICS 62, no. 5 (1997): 1409–18. http://dx.doi.org/10.1190/1.1444245.

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A time‐domain electromagnetic (TDEM) sounding survey was carried out on the western basin‐range boundary of Smith Creek Valley, Nevada. The survey achieved its goal of mapping depth to volcanic basement along five traverses that crossed the boundary. In addition to mapping the electrical basement, the TDEM survey outlined significant cross faulting within the alluvium. Seventy five soundings were made over a five day period using a Geonics EM37 system that shows the usefulness and effectiveness of the TDEM technique to determine depth to electrical basement under heterogeneous range‐front allu

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28

Peter., I. Olasehinde, and E. Arikawe Adepitan. "ANALYSIS AND INTERPRETATION OF AEROMAGNETIC ANOMALY MAP OF KOTON-KARFI (SHEET 227), NORTH-CENTRAL, NIGERIA." Continental J. Earth Sciences 7, no. 2 (2012): 26–31. https://doi.org/10.5281/zenodo.833445.

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Aeromagnetic anomaly map of Koton-Karfi (Sheet 227) was profiled into 5 equal sections (North-South) for depth to base estimation employing Poorna C. Pal’s mathematical modelling method. The anomaly map was sectioned into nine equal squares for brief spectral qualitative description. From the profiles it was observed that, depth-to-basement thickness of the sediments ranges between 600m and 1,100m increasing from south to north of the sheet. Qualitatively, the southern part of the area has high anomaly values and closely spaced which confirms the presence of iron ores while the northern region

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29

Ariyo, Stephen O., O. O. Bayewu, O. M. Ajibade, O. Ogungbesan, and G. O. Adeyemi. "Lithological and Structural Factors Affecting Groundwater Occurrence in Eruwa, South West Nigeria." Nigerian Journal of Physics 32, no. 4 (2024): 179–91. http://dx.doi.org/10.62292/njp.v32i4.2023.164.

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The subsurface Lithological and Structural framework was investigated to understand its effects on groundwater aquiferous occurrence in this study, underlined by the Precambrian Basement Complex of Nigeria, with granite, gneiss, and schist occurring as the dominant rock types. To successfully map the subsurface, fifty-two (52) Vertical Electrical Sounding points were probed to a depth of current electrode spacing of 100m depth to obtain the variation in the resistivity measurement of the underlying weathered basement and basement rock in the subsurface. Apparent resistivity values and current

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30

A, Usman, Lawan AM, Lawal MM, Jonathan LA, and Sununu ST. "Structural Analysis of Selected Ring Complexes in Some Parts of the Nigerian Younger Granite Provinces." Saudi Journal of Engineering and Technology 6, no. 12 (2021): 467–75. http://dx.doi.org/10.36348/sjet.2021.v06i12.004.

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The study area falls within the basement complex of northcentral Nigeria and covers four adjacent quarter degree sheets of 126 (Ririwai), 127 (Kalatu), 147 (Lere) and 148 (Toro) in some parts of Kaduna, Bauchi and Plateau States, Nigeria. This paper is aimed at interpreting the Aeromagnetic data to delineate structures in some parts of the Nigerian younger granite province. This was achieved by determining depth to basement, and developing a 2D model of the shape, location and depth of structures in some parts of the younger granite province. The anomalies on the aeromagnetic map were defined

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31

Martins, Cristiano M., Williams A. Lima, Valeria C. Barbosa, and João B. Silva. "Total variation regularization for depth-to-basement estimate: Part 1 — Mathematical details and applications." GEOPHYSICS 76, no. 1 (2011): I1—I12. http://dx.doi.org/10.1190/1.3524286.

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We have developed an inversion approach that estimates the basement relief of a fault-bounded sedimentary basin. The sedimentary pack is approximated by a grid of 3D or 2D vertical prisms juxtaposed in the horizontal directions of a right-handed coordinate system. The prisms’ thicknesses represent the depths to the basement and are the parameters to be estimated from the gravity data. To obtain depth-to-basement estimates, we introduce the total variation (TV) regularization as a stabilizing function. This approach lets us estimate a nonsmooth basement relief because it does not penalize sharp

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32

Singh, V. P., O. P. Singh, and C. L. Singh. "Structural Appraisal of Parts of Archaeans, Satpuras and Chhattisgarh Basins Around Mandala - Raipur Districts, M.P., India, Using Total Magnetic Field Data." Journal Geological Society of India 50, no. 6 (1997): 709–16. http://dx.doi.org/10.17491/jgsi/1997/500606.

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Abstract Detailed ground magnetic surveys over parts of Archaeans. Satpuras and Chhattisgarh basins belonging to different ages around Mandala-Raipur has been carried out. Detailed investigations provide depth of magnetic sources, basement structural trend. nature of intrusive bodies and thickness of sediments in the basins. The basement structural trend along the five profiles in Archaeans (AA'and BB'), Satpuras (CC') and Chhattisgarh (DD' and EE') have been derived which ranges from 1.5 to 3.5 km. The Archaean and Chattisgarh basins show two dyke like features at depth of 0.28 and 1.26 km. I

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33

Koning, Tako, Nick Cameron, and John Clure. "Undiscovered Potential in the Basement Exploring in Sumatra for oil and gas in naturally fractured and weathered basement reservoirs." Berita Sedimentologi 47, no. 2 (2021): 67–79. http://dx.doi.org/10.51835/bsed.2021.47.2.320.

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This paper was first published in GEOExPro magazine, Vol. 18, No. 1, 2021, both in print and electronically (Koning et al., 2021) and is republished with permission from GEOExPro. For Berita Sedimentologi we have made various changes to the existing text and figures by including further results from our ongoing in-depth research into the geology of basement oil and gas plays in Sumatra.This paper provides and up-to-date and in-depth review of the status of exploration for oil and gas in naturally fractured and weathered basement throughout Sumatra. Also reviewed is the status of oil and gas pr

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34

Hennings, Peter H., and John H. Sprang. "A Method for Estimating Fault Geometry from Rotated Basement Blocks Using Slip Lines." Mountain Geologist 24, no. 2 (1987): 30–32. http://dx.doi.org/10.31582/rmag.mg.24.2.30.

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The geometry of the uppper basement surface displacement field in structures uplrfted by reverse faults can be used to predlct fault surface geometry at depth A method a described that uses sllp lmes whlch define the motion of the uplifted basement block and assumes that faults are curved and become parallel to the reg~onal basement surface beyond the lateral extent of the associated rotated block The method assumes constant shortening mth depth, 1s a "balanced" base- ment model, and provldes an estimate of the amount of horlzontal shortening. The method 1s applled to an example struc- ture ln

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35

Roy, Arka, Chandra Prakash Dubey, and Muthyala Prasad. "Gravity inversion for heterogeneous sedimentary basin with b-spline polynomial approximation using differential evolution algorithm." GEOPHYSICS 86, no. 3 (2021): F35—F47. http://dx.doi.org/10.1190/geo2019-0779.1.

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We have developed a MATLAB-based inversion program, b-spline polynomial approximation using the differential evolution algorithm (SPODEA), to recover the concealed basement geometry under heterogeneous sedimentary basins. Earlier inversion techniques used the discretized subsurface interface topography into a grid of juxtaposed elementary prisms to estimate the basement depth of a basin. Such discretization leads to the failure of the depth profile continuity and requires a higher number of inversion parameters for achieving the desired accuracy. The novel approach of SPODEA overcomes such lim

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Emmanuel, A. G., Matthew T. Tsepav, and T. U. Yusuf. "Resistivity Prospecting for Groundwater Potential at the Proposed Ibrahim Badamasi Babangida University Teaching Hospital, Lapai, Niger State." Journal of Basics and Applied Sciences Research 1, no. 1 (2024): 49–57. http://dx.doi.org/10.33003/jobasr-2023-v1i1-22.

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Resistivity methods have been increasingly used for aquifer characterisation due to their high level of effectiveness. In this study, electrical resistivity survey was carried out at the Proposed Ibrahim Badamasi Babangida University Teaching Hospital Lapai Niger State Nigeria in order to study the groundwater potential with a view of determining the depth to the bedrock and thickness of the overburden protective capacity. Vertical Electrical Sounding (VES) using Schlumberger array was used to occupy thirty (30) VES stations using ABEM Terrameter (SAS 300) for the acquisition of apparent resis

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Eshanibli, Abdelhakim, Abdullatif Dugdug, Nur Ismail, Hussin Ghanush, and Fathi Benelhag. "Basement Configuration and Tectonic Evolution Beneath Zallah Trough, Western Sirt Basin, Libya, Obtained from Integrated Gravity, and Aeromagnetic Data." Iraqi Geological Journal 57, no. 2E (2024): 41–53. https://doi.org/10.46717/igj.57.2e.4ms-2024-11-13.

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In this study, gravity and aeromagnetic datasets are analysed to map fault systems and the depth of the basement, which has hitherto been unknown. The gravity and magnetic data were provided by the Libyan Petroleum Institute. Low-pass filters separated local and regional components of gravity and aeromagnetic datasets, as well as the CET grid analysis filter, Euler deconvolution, Source Parameter Imaging (SPI) estimate of crystalline basement depth, Werner deconvolution, and 2D forward modelling. The results show the fault patterns, primarily trends, are NE-SW, N-S, and NW-SE, which define and

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Akpaneno, Aniefiok, and S. Abdulwahab. "GEOPHYSICAL INVESTIGATION OF GROUNDWATER CONTAMINATION USING DC RESISTIVITY TECHNIQUE AT THE MALE HOSTEL OF ISA KAITA COLLEGE OF EDUCATION DUTSIN-MA, KATSINA STATE, NIGERIA." FUDMA JOURNAL OF SCIENCES 4, no. 4 (2021): 547–60. http://dx.doi.org/10.33003/fjs-2020-0404-643.

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A geophysical investigation involving Vertical Electrical Sounding (VES) using the Schlumberger array was carried out at the Isa Kaita College of Education specifically at the Male Hostel. The aim of the investigation is to explore the groundwater contamination of the area with the objectives: to determine the depth to basement of the study area, to determine the aquifer thickness, to determine the depth to aquifer, to determine the conductivity of the aquifer and to determine the thickness of topsoil and its variation in resistivity. A total of four (4) vertical electrical soundings were carr

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Araby, Walaa, Samy H. Abd, Alaa E. Aref, Ibrahim Al-Alfy, M. M. Abdullah, and Ahmed A. Elhusseiny. "Integration of magnetic, gravity, and well-logging data interpretation to delineate the structural framework and formation evaluation of Bahariya Formation, North Diyur area, northern Western Desert, Egypt." Leading Edge 40, no. 10 (2021): 724–33. http://dx.doi.org/10.1190/tle40100724.1.

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The Bahariya Formation in Egypt's Western Desert is a major source for minerals and hydrocarbon accumulation. It is also characterized by a relatively high radiation content because it contains iron oxide deposits that attract radioactive elements. The main objectives of our study are to establish depth to basement, basement configuration and related structural elements, and thickness and configuration of the overlain sedimentary section. In addition to the analysis of well-logging data, many advanced techniques have been applied to analyze magnetic and gravity data, including depth estimation

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Kivior, Irena, Stephen Markham, Leslie Mellon, and David Boyd. "Mapping geology beneath volcanics using magnetic data." APPEA Journal 58, no. 2 (2018): 821. http://dx.doi.org/10.1071/aj17205.

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Volcanic layers within sedimentary basins cause significant problems for petroleum exploration because the attenuation of the seismic signal masks the underlying geology. A test study was conducted for the South Australia Government to map the thickness of volcanics and sub-volcanic geology over a large area in the Gawler Range Volcanics province. The area is covered by good quality magnetic data. The thickness of volcanics and basement configuration was unknown as there has only been a limited amount of drilling. The Automatic Curve Matching (ACM) method was applied to located magnetic data a

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Damayanti, Cahya, Sismanto Sismanto, Ari Setiawan, and Lina Handayani. "IDENTIFYING THE BASEMENT STRUCTURE OF THE SULA FAULT ZONE IN THE BANGGAI-SULA MICROCONTINENT REGION, MOLUCCA SEA, BASED ON 2D GRAVITY INVERSION MODELLING USING PARTICLE SWARM OPTIMISATION AND 3D MODELLING USING GRABLOX." Rudarsko-geološko-naftni zbornik 40, no. 2 (2025): 137–54. https://doi.org/10.17794/rgn.2025.2.10.

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This study aims to delineate the basement structure of Sula fault zones within the Banggai-Sula Microcontinent Region through the implementation of 2D and 3D gravity inversion modelling. The Sula fault is a consequence of the convergence between the Banggai-Sula Microcontinent and northern regions, or the compression caused by the extrusion of material from the Molucca Sea collision zone to the south. This is an active fault, with a few earthquakes in the last two decades. As a complex active fault, this presents several questions, particularly about the fault’s structure. Residual anomaly dat

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Ahmady, F. N. "Comparative Study of Gravity and Magnetic Inversion for Estimating Sedimentary Basin Geometry Using Synthetic Data." IOP Conference Series: Earth and Environmental Science 1458, no. 1 (2025): 012011. https://doi.org/10.1088/1755-1315/1458/1/012011.

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Abstract Indonesia hosts 128 sedimentary basins with potential reserves of oil and natural gas. Accurate estimation of basement geometry during the initial exploration phase is critical for identifying petroleum systems within these basins. Gravity and magnetic methods are commonly employed for this purpose, utilizing inversion techniques to analyze basements configuration. This study investigates the effectiveness of gravity and magnetic data inversion in estimating basement depth and geometry, using synthetic models as the basis for analysis. The synthetic models incorporate two proposed bas

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Cai, Hongzhu, and Michael Zhdanov. "Application of Cauchy-type integrals in developing effective methods for depth-to-basement inversion of gravity and gravity gradiometry data." GEOPHYSICS 80, no. 2 (2015): G81—G94. http://dx.doi.org/10.1190/geo2014-0332.1.

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One of the most important applications of gravity surveys in regional geophysical studies is determining the depth to basement. Conventional methods of solving this problem are based on the spectrum and/or Euler deconvolution analysis of the gravity field and on parameterization of the earth’s subsurface into prismatic cells. We have developed a new method of solving this problem based on 3D Cauchy-type integral representation of the potential fields. Traditionally, potential fields have been calculated using volume integrals over the domains occupied by anomalous masses subdivided into prisma

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Mohammed, Garba Ali, Charles Calvin Kauda, Ezekiel Kamureyina, Mustafa Ali Garba, Musa Hayatudeen, and Udo Aniedi Aniekan. "Assessment of Bedrock Depth Utilizing Vertical Electrical Sounding (DDBR)." International Journal of Emerging Science and Engineering 12, no. 12 (2024): 5–12. http://dx.doi.org/10.35940/ijese.d4419.12121124.

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This study is aimed at evaluating the depth to bed rock around Liji area of Gombe Northeastern Nigeria. The area covers 18𝒌𝒎𝟐and lies between Latitudes 11°11ʹ20.4ʺ, and 11°14′ 37.4″Eand Longitudes 10°16′ 20.8″, and 10°19′ 16.0″N, (Gombe N.W Sheet 152). The study area consists of Basement rocks (Coarse grained Biotite Granite,), Aptian-Albian indurated Bima Sandstone, Gombe Formation and Mudrock. Ten (10) Vertical Electrical Sounding (VES) were profiled around Liji and environs, employing Schlumberger array with a maximum electrode separation of AB/2 = 100m to determine the depth to bedrock. Th

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Sarma, K. V. L. N. S., M. V. Ramana, G. P. S. Murty, et al. "Application of Inversion Techniques on Marine Magnetic Data - Andaman Shelf." Journal Geological Society of India 44, no. 1 (1994): 73–78. http://dx.doi.org/10.17491/jgsi/1994/440108.

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Abstract Analysis of the total intensity magnetic data over the western Andaman shelf has been carried out for determination of depth to magnetic basement using the Analytical signal and Werner Deconvolution methods. The basement depths are refined with optimisation procedure of iteration modelling. The depths Derived from these methods match well with the acoustic basement mapped by the seismic reflection survey across the Andaman shelf. The interpretation by these methods demonstrates the rapid utility in virgin areas forderiving the first order basement configurationquickly. The gradual slo

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Al-Saadi, O. S., and H. A. Al-Saady. "Processing and re-interpretation of gravity bouguer map of a selected area in the W-NW of Iraq." IOP Conference Series: Earth and Environmental Science 1300, no. 1 (2024): 012002. http://dx.doi.org/10.1088/1755-1315/1300/1/012002.

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Abstract Geophysical data interpretation is crucial in characterizing the subsurface structure. The Bouguer gravity map analysis of the W-NW region of Iraq serves as the basis for the current geophysical research. The Bouguer gravity data were processed using the Power Spectrum Analysis method. Four depth slices have been acquired after the PSA process, which are: 390 m, 1300 m, 3040 m, and 12600 m depth. The gravity anomaly depth maps show that shallow-depth anomalies are mainly related to the sedimentary cover layers and structures, while the gravity anomaly of the deeper depth slice of 1260

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Ubaidullah, Ahmad, Aniefiok Francis Akpaneno, and Komla Francis Walter. "Assessment of groundwater potential using vertical electric sounding technique at Faculty of Medicine and Engineering, Federal University Dutsin-ma Katsina State, Nigeria." Global Journal of Earth and Environmental Science 6, no. 4 (2021): 98–105. http://dx.doi.org/10.31248/gjees2021.109.

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Geophysical exploration is used to locate boundaries between different elements of the subsoil as these procedures depend on variations in the gravitational, magnetic, electrical, radioactive or elastic properties of the subsurface. Electrical resistivity method was employed to investigate the groundwater potential of the Faculty of Medicine and Engineering at permanent site of Federal University Dutsin-ma, Katsina State. The study was carried out using ABEM SAS 300 Terrameter, Schlumberger electrodes configurations were used to acquire 9 Vertical Electrical Soundings (VES) soundings. The VES

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Alqahtani, Faisal, Ema Michael Abraham, Essam Aboud, and Murad Rajab. "Two-Dimensional Gravity Inversion of Basement Relief for Geothermal Energy Potentials at the Harrat Rahat Volcanic Field, Saudi Arabia, Using Particle Swarm Optimization." Energies 15, no. 8 (2022): 2887. http://dx.doi.org/10.3390/en15082887.

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We invert gravity and magnetic anomalies for basement relief at the Harrat Rahat Volcanic Field (HRVF) for the purpose of evaluating its geothermal energy prospects. HRVF is dominated by basaltic scoria cones and other volcanic rocks overlying the Proterozoic basement. The area considered for this study is located within the northern HRVF and consists mainly of alkali basalts with lesser amounts of benmoreite, mugearite, hawaiite, and trachyte. Our approach adopts a global optimization technique using Particle Swarm Optimization with automated parameter selection, and a two-dimensional gravity

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A.I, Olawuyi, Amakiri A.R.C, and Horsfall O.I. "Geoelectric Evaluation of Groundwater Potential and Aquifer Vulnerability of Overburden Aquifers of Ado-Ekiti, Southwestern Nigeria." Journal of Research in Environmental and Earth Sciences 10, no. 11 (2024): 35–51. http://dx.doi.org/10.35629/2532-10113551.

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Groundwater resources are crucial for the socio-economic development of regions with seasonal surface water sources. Characterization of groundwater aquifers typically involves assessing groundwater potential and vulnerability. This study utilized 40 Vertical Electrical Sounding (VES) measurements with a Schlumberger array to characterize the basement aquifers of Ado-Ekiti, Southwest Nigeria. The interpretation of the data was effected using IPi2Win and Interpex (IX1D). The findings reveal four geoelectric layers in 67.5% of the study area and five layers in 32.5%. The five identified layers i

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Garba, Ali Mohammed. "Assessment of Bedrock Depth Utilizing Vertical Electrical Sounding (DDBR)." International Journal of Emerging Science and Engineering (IJESE) 12, no. 12 (2024): 5–12. https://doi.org/10.35940/ijese.D4419.12121124.

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<strong>Abstract:</strong> This study is aimed at evaluating the depth to bed rock around Liji area of Gombe Northeastern Nigeria. The area covers 18𝒌𝒎𝟐and lies between Latitudes 11°11ʹ20.4ʺ, and 11°14′ 37.4″Eand Longitudes 10°16′ 20.8″, and 10°19′ 16.0″N, (Gombe N.W Sheet 152). The study area consists of Basement rocks (Coarse grained Biotite Granite,), Aptian-Albian indurated Bima Sandstone, Gombe Formation and Mudrock. Ten (10) Vertical Electrical Sounding (VES) were profiled around Liji and environs, employing Schlumberger array with a ma

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