Mapping of Muslim Bagh ophiolite complex (Pakistan) using new remote sensing, and field data

Khan, Shuhab D.; Mahmood, Khalid; Casey, John F.

doi:10.1016/j.jseaes.2006.11.001

Cited by 77 publications

(34 citation statements)

References 20 publications

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“…9 for discussion in the following section. The discrimination of rock types was further confirmed by mapping minerals of the region using a supervised classification method called spectral angle mapper (SAM) Nasir, 2015, 2014;Hecker et al, 2008;Khan et al, 2007;Khan and Glenn, 2006;. This method encompasses hyperspectral tools such as minimum noise fraction (MNF) transformation, pixel purity index (PPI) and n-dimensional visualization, and classifies minerals based on collection of end-member spectral information Nasir, 2015, 2014;Gabr et al, 2010;Kruse et al, 2003).…”

mentioning

confidence: 99%

Tertiary and quaternary marine terraces and planation surfaces of northern Oman: Interaction of flexural bulge migration associated with the Arabian-Eurasian collision and eustatic sea level changes

2016

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The northeastern Arabian passive margin is being subducted beneath the Zagros and Makran of Iran. A flexural bulge related to the weight of the Makran has migrated at 4 cm/a through the previously uplifted Hajar Mountains of Oman as this active convergence and collision between Arabia and Eurasia progresses, adding approximately another 500 meters of relief, and forming a series of uplifted marine terraces, alluvial terraces, and planation surfaces that record the passage of the bulge. We use a combination of field studies, remote sensing and GIS to map and better-understand these terraces, and elucidate how the tectonics of bulge migration, down-to-trench normal faulting, and eustatic sea level changes have interacted to produce the extant geomorphic features on the inner slope of the flexural bulge as it sinks into the foredeep of the Gulf of Oman. We speculate those terraces that were uplifted on the outer slope of the forebulge as it initially migrated through the passive margin (affected by ophiolite obduction in the Cretaceous) 3.75-7.5 Ma ago are now sinking on the inner slope of the forebulge (corresponding to the outer trench slope in the foredeep), and have been partly covered by Quaternary marine terraces related to a Weichselian sea level high stand. Both the Tertiary and Quaternary terraces are cut by faults related to the active collision, confirming that there is a significant risk of moderate earthquakes in the region. KEY WORDS: marine terraces, flexural bulge, Arabia-Eurasia collision, Sultanate of Oman, remote sensing, image processing, Quaternary sea level fluctuation.

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confidence: 99%

Tertiary and quaternary marine terraces and planation surfaces of northern Oman: Interaction of flexural bulge migration associated with the Arabian-Eurasian collision and eustatic sea level changes

2016

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“…The MNF algorithm divides the data in two categories: The first part is the data with eigenvalues above 1, which includes useful and without noise information and the second part is the data with eigenvalues of less than or equal to 1 that includes noises [24]. MNF eigenimages could be directly used for vegetation and lithological mapping [26]. In this study, the VNIR and SWIR data were used for MNF transformation.…”

Section: Data Processingmentioning

confidence: 99%

Lithological Mapping from OLI and ASTER Multispectral Data Using Matched Filtering and Spectral Analogues Techniques in the Pasab-e-Bala Area, Central Iran

Vincheh¹,

Arfania²

2017

OJG

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Using satellite data for geological mapping beside saving time and reducing coast leads to increased accuracy. In this study, the result of remote sensing techniques has been compared for manifesting geological units. The study area is limited to 1:25,000 rectangle of Pasab-e-Bala which is located in the northeast of Isfahan and West of Qom-Zefreh fault. This region mainly consists of Devonian and Quaternary sedimentary units. In this study, ASTER and OLI satellite data has been corrected atmospherically and radiometrically. Spectral Analogues method and OLI band combination (652) in RGB image were powerful in distinguishing various rock units. Finally, a new geologic map of the Pasab-e-Bala area was created by integrating the results of remote sensing, previous geological maps and field inspection. It is concluded that the workflow of Landsat 8 image processing, interpretation and ground inspection have a great potential to identify geological formations. According to field data originality, accuracy of the produced map was evaluated through calculating kappa index and overall accuracy and a thematic accuracy of 86% was achieved for geological formations.

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“…Gabbros and basalts, two important components of ophiolites have similar spectral feature with absorption at 1.00 lm and 1.85 lm (for Fe 2+ ). These rocks also have absorption feature at 1.4 lm, 1.9 lm, 2.3 lm due to overtone of OH stretching, H-OH bond bending and compounded metal-OH bond bending and stretching respectively (Khan et al, 2007;Tangestani et al, 2011). Weathered plagioclase minerals of basalts, on the other hand, are identified with spectral feature at 2.2 lm .…”

Section: Introductionmentioning

confidence: 97%

Implementation of reflection spectroscopy based new ASTER indices and principal components to delineate chromitite and associated ultramafic–mafic complex in parts of Dharwar Craton, India

Guha

Ghosh

Kumar

et al. 2015

Advances in Space Research

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Mapping of Muslim Bagh ophiolite complex (Pakistan) using new remote sensing, and field data

Cited by 77 publications

References 20 publications

Tertiary and quaternary marine terraces and planation surfaces of northern Oman: Interaction of flexural bulge migration associated with the Arabian-Eurasian collision and eustatic sea level changes

Tertiary and quaternary marine terraces and planation surfaces of northern Oman: Interaction of flexural bulge migration associated with the Arabian-Eurasian collision and eustatic sea level changes

Lithological Mapping from OLI and ASTER Multispectral Data Using Matched Filtering and Spectral Analogues Techniques in the Pasab-e-Bala Area, Central Iran

Implementation of reflection spectroscopy based new ASTER indices and principal components to delineate chromitite and associated ultramafic–mafic complex in parts of Dharwar Craton, India

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