The Results of Borehole Acoustic Imaging from a Granite in the Jihlava District, Czech Republic: Implications for Structural Geological Research

Nováková, Lucie; Novák, Petr; Brož, Milan; Sosna, K.; Pitrák, Michal; Kasíková, Jana; Rukavičková, Lenka; Maňák, Lukáš

doi:10.5539/jgg.v4n4p92

Cited by 3 publications

(3 citation statements)

References 6 publications

(5 reference statements)

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“…Paleostress analysis itself can be afflicted if the missed set bears unique kinematic information. Nováková et al [14] showed paleostress analysis based on data collected in a quarry corresponds to the data found in a nearby borehole.…”

Section: Sampling Bias Correctionmentioning

confidence: 63%

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On the Paleostress Analysis Using Kinematic Indicators Found on an Oriented Core

Nováková¹,

Brož²

2014

ujg

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Paleostress analysis enables identification of stress history of a studied area. Reliable data are however necessary to get consistent results. Fault planes containing kinematic indicators have to be searched and recognized. If surface field survey is impossible, data are lacking, or deeper parts of a rock environment are being studied, boreholes can provide additional information. This paper is presenting review on paleostress analysis using core inspection data. Various aspects of the subject including kinematic data acquisition, core orientation, sampling bias, data processing, paleostress analysis and recent stress estimation are being outlined. The method is being demonstrated using case story based on borehole situated in Tisá Granite Massif, Czech Republic.

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Section: Sampling Bias Correctionmentioning

confidence: 63%

“…Acoustic borehole imaging, televiewer or oriented borehole optical camera can be used. Significant fractures enable core orienting if identified both on the core and in the borehole [14].…”

Section: Core Orientationmentioning

confidence: 99%

On the Paleostress Analysis Using Kinematic Indicators Found on an Oriented Core

Nováková¹,

Brož²

2014

ujg

Self Cite

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“…Striations are formed on fault surfaces by friction between two solids [120,121]. These striations are considered a robust indicator for fault identification [122] as well as for determining fault slip direction [120,123]. For the fractures examined in this study, it appears that most of them are oriented NE-SW and NW-SE with striations on fault surfaces in some places (Fig.…”

Section: Field Investigationmentioning

confidence: 87%

Mapping and Assessment of Geological Lineaments with the Contribution of Earth Observation Data: A Case Study of the Zaer Granite Massif, Western Moroccan Meseta

Zoraa,

Raji,

El Hadi

et al. 2023

GaEE

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The Zaer granitic massif is one of the most important Variscan granitoids in the Central Zone of the Western Moroccan Meseta. It is characterized by a deformation which is manifested by a network of fractures of different scales. Thanks to the technology currently available, many geological studies rely heavily on the mapping of geological lineaments, especially in structural geology. This has become more reliable with access to earth observation data using optical and radar sensors as well as the various remote sensing techniques. Therefore, the objective of this work is to determine the potential of Landsat 8, ASTER, Sentinel 2 and radar Sentinel 1 datasets using the automatic method to extract lineaments. Furthermore, this work focuses on quantitative lineament analysis to determine lineament trends and subsequently compare them with global and regional tectonic movement trends. The lineaments obtained through different satellite images were validated by including the shaded relief maps, the slope map, the correlation with the pre-existing faults in the geological maps as well as the field investigation. Comparison of these results indicates that Sentinel 1 imagery provides a better correlation between automated extraction lineaments and major fault zones. Thus, Sentinel 1 data is more effective in mapping geological lineaments. The final lineament map obtained from the VH and VV polarizations shows two major fault systems, mainly oriented NE-SW and NW-SE to NNW-SSE.

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Study on the Weak Interlayer Identification Method Based on Borehole Photo-Acoustic Combined Measurement: Application to a Landslide Case Study

et al. 2022

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A weak interlayer is the key factor in controlling slope stability. It is of great significance to effectively identify the weak interlayer in the study of spatial and temporal distribution law and the internal structure characteristics of a landslide. Considering the limitations of traditional optical imaging and wave speed test methods, this paper presents a weak interlayer identification method based on borehole photo-acoustic combination measurement. By using the combination of optical imaging and acoustic wave scanning, the multi-source data collection of borehole rock wall and borehole surrounding rock is realized, which effectively captures the comprehensive response characteristics of the weak interlayer. This paper first constructs a multi-source data acquisition technology based on the borehole photo-acoustic combination measurement to realize the visualization of the image information and acoustic data of the target area on the borehole rock wall. Subsequently, the optical image features and the acoustic response characteristics of the weak interlayer are clarified based on the optical image and the acoustic scanning data. The hole wall texture characteristic response function, hole wall integrity characteristic response function, hole wall acoustic characteristic response function and hole wall contour characteristic response function are constructed. Finally, the landslide weak interlayer identification method considering the texture characteristics, complete characteristics, acoustic response characteristics and contour characteristics of the borehole rock wall is proposed, which effectively distinguishes the types of rock mass structural surface and realizes the automatic identification of the weak interlayer. Combined with the case analysis, the correctness and reliability of the present method are verified. The results show that the method can identify the weak interlayer and provide scientific basis for landslide management, which can provide a feasible and effective new way to identify the landslide weak interlayer in practical engineering, with a good application prospect and promotion value.

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The Results of Borehole Acoustic Imaging from a Granite in the Jihlava District, Czech Republic: Implications for Structural Geological Research

Cited by 3 publications

References 6 publications

On the Paleostress Analysis Using Kinematic Indicators Found on an Oriented Core

On the Paleostress Analysis Using Kinematic Indicators Found on an Oriented Core

Mapping and Assessment of Geological Lineaments with the Contribution of Earth Observation Data: A Case Study of the Zaer Granite Massif, Western Moroccan Meseta

Study on the Weak Interlayer Identification Method Based on Borehole Photo-Acoustic Combined Measurement: Application to a Landslide Case Study

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