Subsurface faults detection based on magnetic anomalies investigation: A field example at Taba protectorate, South Sinai

Khalil, Mohamed H.

doi:10.1016/j.jappgeo.2016.06.001

Cited by 15 publications

(6 citation statements)

References 52 publications

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“…This study's total magnetic anomaly resulted in magnetic intensity variations ranging from 44595nT to 44610nT. The low intensity range (blue) was discovered in manifestation zones like mud pools [2]. It was also found such as Selogajah and Banyukuning.…”

Section: Discussionmentioning

confidence: 70%

“…Unfortunately, the utilization of geothermal energy only reaches 3 percent or 1,179 Mw [1]. The Geothermal existence is found by those indications of energy can be found through several visible indications of geothermal energy are volcanoes, hot springs, geysers, fumaroles [2]. In the targeted area, which is on the northern slope of Mount Pandan, Bojonegoro has several geothermal manifestations in the form of hot water in Selo Gajah and Banyu Kuning as well as the mud burst phenomenon in Jari [3].…”

Section: Introductionmentioning

confidence: 99%

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Geomagnetic Data Analysis to Identify Subsurface Condition of Gondang Area, Bojonegoro

Bohal,

Fermantono,

Mariyanto

2023

IOP Conf. Ser.: Earth Environ. Sci.

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The presence of manifestation in the Gondang indicates a specific geological condition. Those manifestations are Banyu Kuning Hot Spring, Selo Gajah Hot Spring, and Jari Mud Burst. The purpose of this study, which was carried out near Mount Pandan, was to identify the distribution of magnetic fields and magnetic anomalies, including the patterns of potential geothermal energy distribution in the region based on its magnetism. It also aimed to explain the rock structure in the manifestation area based on susceptibility values. The survey was conducted using 94 measuring points that were randomly distributed throughout the manifestation area. The data was corrected using IGRF and diurnal correction, and it was examined using Surfer 11 to construct a contour map and Oasis Montaj to visualize 3D models. According to the processed data, the residual anomaly’s value ranges from -232.1 nT until 159.4 nT. For the anomaly of residual, 2D and 3D models demonstrated low susceptibility dissemination values ranging from -0.029 until -0.0135 cgs on the manifestation zone. The high susceptibility value, which is considered an intrusion rock, has a value range of 0.011 to 0.046 cgs.

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Section: Discussionmentioning

confidence: 70%

Section: Introductionmentioning

confidence: 99%

Geomagnetic Data Analysis to Identify Subsurface Condition of Gondang Area, Bojonegoro

Bohal,

Fermantono,

Mariyanto

2023

IOP Conf. Ser.: Earth Environ. Sci.

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“…In the case study of Gondang, Bojonegoro, East Java, the exemplified of hot springs and mud pools were manifested. This can be an indication of certain geological conditions (Khalil, 2016). This depiction can be seen through variations in the distribution of rock susceptibility namely, the ability to accept the magnetic properties of the earth's magnetic field.…”

Section: Introductionmentioning

confidence: 99%

Application of Upward Continuation Filter for Geomagnetic Data Interpretation in Gondang, Bojonegoro Area

Bohal

Mariyanto

Utama

2021

JMEST

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There are several manifestations of hot springs and mud pools in Gondang area, Bojonegoro, East Java, there were. This can be an indication of certain geological conditions. The description of these conditions can be done by measuring the geomagnetic method. A total geomagnetic anomaly has been generated through some geomagnetic values recorded in the region, which has been corrected using IGRF correction and diurnal correction. These steps were done to reduce external influences on the real value of the data. This research will use several variations of values in the Upward Continuation filter and one of them will be chosen to proceed as a model. Upward Continuation Filter is a process of transforming potential field data from a flat plane towards the higher plane. The purpose of this study is to compare the results of contour maps on several variations of the Upward Continuation value, to obtain the results of the separation of residual and regional anomalies using the Upward Continuation method, and to determine the value of the susceptibility distribution of inversion modeling in the Gondang region, Bojonegoro. Based on the results of data processing, it is known that the upward continuation value used is 100mdatum with a magnetic intensity value in the regional anomaly of 106.5 nT to 509.0. While the value of the residual anomaly is -232.1 nT to 159.4 nT. The 3D model was made using this residual anomaly which shows the low susceptibility distribution value in the range of -0.0298 to -0.0135 SI around the manifestation area, whereas the high susceptibility value has a value range of 0.0114 to 0.0466 SI interpreted as rock intrusion. Rock intrusion occurs within the area around the manifestation of mud pools.

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“…Due to the thick Triassic flysch in SGFB and Mesozoic sediments in SB, the properties of the basement on both sides of LFZ are hard to determine. Crustal magnetic anomalies are generated by ferromagnetic minerals at temperatures below the Curie point (Thébault et al, 2010), and in general, with the increase of mafic minerals, the magnetism of the igneous rock becomes stronger (Liu et al, 2014;Xiong et al, 2016a), and the magnetic anomaly is thus a practical tool to reveal magnetic sources at depth, and has been widely used to identify buried igneous rocks, dykes, faults and resource exploration (Lou et al, 2008;Khalil, 2016;Zhang et al, 2019). Magnetic anomalies are also used to detect the fluctuation of crystalline basement due to the significant magnetic contrast between sedimentary cover (weak magnetization) and magnetic basement (strong magnetization).…”

Section: Introductionmentioning

confidence: 99%

Magnetic Structure and its Tectonic Implication Around Longmenshan Fault Zone Revealed by EMAG2v3

Lei

Jiao

et al. 2022

Front. Earth Sci.

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The formation of magnetic minerals is bound up with the tectonic evolution history, whereupon the distribution of magnetic anomalies has great meanings for regional tectonics. In this study, we use the latest global lithospheric magnetic field model EMAG2-v3, processed by various techniques including reduction to the pole (RTP), upward continuation, derivations, Euler deconvolution, estimation of total magnetization direction, and Curie point depth (CPD), to unveil the tectonics around Longmenshan fault zone (LFZ). LFZ is clearly displayed as a positive and negative anomaly transition zone in RTP anomalies and acts as a magnetic basement boundary. The Sichuan Basin (SB), located to the east of LFZ, is marked by strong magnetic basement and NE-strike banded induced positive anomalies which are associated with the Neoproterozoic magmatic activity. The banded shape, absence of radial pattern of anomalies, and existence of fossil subduction zone supports that the magnetic basement was formed in arc environment. The CPD in SB estimated by radial average power spectral is 30–51 km, which allows magnetic minerals in deep crust or even in lithospheric mantle to exhibit high magnetizations. The Songpan-Ganzi fold belt (SGFB), in contrast, is located to the west of LFZ and covered by thick and low-susceptibility Triassic deposits of flysch, manifests as weak negative anomalies caused by relatively shallow CPD and widespread remanent magnetization. Significant positive anomalies, appearing around the Manai and Rilonguan granitic massifs, indicate a strong magnetic basement beneath SGFB, which is conjectured as westward extension of the Yangtze Block at depth.

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Subsurface faults detection based on magnetic anomalies investigation: A field example at Taba protectorate, South Sinai

Cited by 15 publications

References 52 publications

Geomagnetic Data Analysis to Identify Subsurface Condition of Gondang Area, Bojonegoro

Geomagnetic Data Analysis to Identify Subsurface Condition of Gondang Area, Bojonegoro

Application of Upward Continuation Filter for Geomagnetic Data Interpretation in Gondang, Bojonegoro Area

Magnetic Structure and its Tectonic Implication Around Longmenshan Fault Zone Revealed by EMAG2v3

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