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385857

MAPPING OF HYDROTHERMAL ALTERATION ZONES AROUND WADI ZUBEIR, NORTHERN EASTERN DESERT, EGYPT USING AIRBORNE GAMMA-RAY SPECTROMETRIC, AEROMAGNETIC AND REMOTE SENSING DATA

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Last updated: 21 Dec 2024

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Abstract

Airborne geophysical and satellite imagery were used to map hydrothermal alteration zones by analyzing the acquired data to provide accurate and reliable results. In the area around Wadi Zubeir, located in northern Eastern Desert of Egypt, airborne magnetic and spectrometric data, also satellite data were used to map hydrothermal alteration zones. The airborne radiometric data processed and gridded to generate the concentration maps of Potassium (K in %), Uranium (eU in ppm), Thorium (eTh in ppm) and ratios of K/eTh were computed to map the distribution of radioactive elements. The delineated geology and hydrothermally altered zones led to the identification of altered minerals. The altered zones were noted to be associated with mineralization in the granitic rocks. The delineated structures aided the design of the geologic map of the study area. The aeromagnetic data analyses performed to improve the quality of data for better understanding of the subsurface geology were reduction to the pole, total horizontal derivative, analytical signal, and tilt derivative. There are two main hydrothermal alteration zones have been identified. They show a spatial correlation with surface prospects and mineral occurrences, granite rocks, and main trends. Mapping of hydrothermal alteration zones associated with mineralization is of paramount importance in searching for metal deposits.

DOI

10.21608/jegs.2023.385857

Authors

First Name

A.A.

Last Name

AZZAZY

MiddleName

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Affiliation

Nuclear Materials Authority, P.O. Box 530, El Maadi, Cairo, Egypt.

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Volume

21

Article Issue

1

Related Issue

50971

Issue Date

2023-12-01

Receive Date

2024-10-12

Publish Date

2023-12-01

Page Start

21

Page End

37

Print ISSN

1687-2207

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https://jegs.journals.ekb.eg/article_385857.html

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https://jegs.journals.ekb.eg/service?article_code=385857

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385,857

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Original Article

Type Code

3,051

Publication Type

Journal

Publication Title

Journal of Egyptian Geophysical Society

Publication Link

https://jegs.journals.ekb.eg/

MainTitle

MAPPING OF HYDROTHERMAL ALTERATION ZONES AROUND WADI ZUBEIR, NORTHERN EASTERN DESERT, EGYPT USING AIRBORNE GAMMA-RAY SPECTROMETRIC, AEROMAGNETIC AND REMOTE SENSING DATA

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Article

Created At

21 Dec 2024