ASTER detection of chromite bearing mineralized zones in Semail Ophiolite Massifs of the northern Oman Mountains

Exploration strategy

Sankaran Rajendran, Salah al-Khirbash, Bernhard Pracejus, Sobhi Nasir, Amani Humaid Al-Abri, Timothy M. Kusky, Abduwasit Ghulam

Research output: Contribution to journalArticle

57 Citations (Scopus)

Abstract

Economically viable chromite deposit occurrences are widespread in the ultramafic rocks of Semail ophiolite massifs of the northern Oman Mountains, particularly in the basal dunite and harzburgite unit of the mantle section. Geological mapping of this region is challenging, primarily due to difficult access, complexity of structures, and lack of resolution and areal integrity of lithological differentiation using conventional mapping techniques. The present research study evaluates the discrimination and occurrence of chromites bearing mineralized zones within ophiolites by analyzing the capabilities of Landsat TM and Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) satellite data; using a number of selected methods including decorrelated stretching, different band rationing and Principal Component Analysis image processing techniques exist in the scientific literature. The study results show that the processed VNIR and SWIR spectral wavelength regions are promising in detecting the areas of potential chromite bearing mineralized zones within the ophiolite region, and proved to be successful for mapping of serpentinized harzburgite containing chromites. Exploration geologists, industrialists and mine owners are advised to adopt this technique and avoid the limits in filed data alone for more exploration and exploitation of areas having chromite deposits in arid region elsewhere.

Original languageEnglish
Pages (from-to)121-135
Number of pages15
JournalOre Geology Reviews
Volume44
DOIs
Publication statusPublished - Feb 2012

Fingerprint

Bearings (structural)
Chromite
ASTER
chromite
Radiometers
Chromite deposits
ophiolite
mountain
harzburgite
Arid regions
Principal component analysis
Stretching
Image processing
Rocks
Satellites
dunite
geological mapping
Wavelength
ultramafic rock
arid region

Keywords

  • Chromites
  • Harzburgite
  • Mineralized zone
  • Oman
  • Ophiolite
  • Remote sensing
  • Semail massifs

ASJC Scopus subject areas

  • Economic Geology
  • Geochemistry and Petrology
  • Geology

Cite this

ASTER detection of chromite bearing mineralized zones in Semail Ophiolite Massifs of the northern Oman Mountains : Exploration strategy. / Rajendran, Sankaran; al-Khirbash, Salah; Pracejus, Bernhard; Nasir, Sobhi; Al-Abri, Amani Humaid; Kusky, Timothy M.; Ghulam, Abduwasit.

In: Ore Geology Reviews, Vol. 44, 02.2012, p. 121-135.

Research output: Contribution to journalArticle

@article{ce88a0a6b6814836927487261567a0c8,
title = "ASTER detection of chromite bearing mineralized zones in Semail Ophiolite Massifs of the northern Oman Mountains: Exploration strategy",
abstract = "Economically viable chromite deposit occurrences are widespread in the ultramafic rocks of Semail ophiolite massifs of the northern Oman Mountains, particularly in the basal dunite and harzburgite unit of the mantle section. Geological mapping of this region is challenging, primarily due to difficult access, complexity of structures, and lack of resolution and areal integrity of lithological differentiation using conventional mapping techniques. The present research study evaluates the discrimination and occurrence of chromites bearing mineralized zones within ophiolites by analyzing the capabilities of Landsat TM and Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) satellite data; using a number of selected methods including decorrelated stretching, different band rationing and Principal Component Analysis image processing techniques exist in the scientific literature. The study results show that the processed VNIR and SWIR spectral wavelength regions are promising in detecting the areas of potential chromite bearing mineralized zones within the ophiolite region, and proved to be successful for mapping of serpentinized harzburgite containing chromites. Exploration geologists, industrialists and mine owners are advised to adopt this technique and avoid the limits in filed data alone for more exploration and exploitation of areas having chromite deposits in arid region elsewhere.",
keywords = "Chromites, Harzburgite, Mineralized zone, Oman, Ophiolite, Remote sensing, Semail massifs",
author = "Sankaran Rajendran and Salah al-Khirbash and Bernhard Pracejus and Sobhi Nasir and Al-Abri, {Amani Humaid} and Kusky, {Timothy M.} and Abduwasit Ghulam",
year = "2012",
month = "2",
doi = "10.1016/j.oregeorev.2011.09.010",
language = "English",
volume = "44",
pages = "121--135",
journal = "Ore Geology Reviews",
issn = "0169-1368",
publisher = "Elsevier BV",

}

TY - JOUR

T1 - ASTER detection of chromite bearing mineralized zones in Semail Ophiolite Massifs of the northern Oman Mountains

T2 - Exploration strategy

AU - Rajendran, Sankaran

AU - al-Khirbash, Salah

AU - Pracejus, Bernhard

AU - Nasir, Sobhi

AU - Al-Abri, Amani Humaid

AU - Kusky, Timothy M.

AU - Ghulam, Abduwasit

PY - 2012/2

Y1 - 2012/2

N2 - Economically viable chromite deposit occurrences are widespread in the ultramafic rocks of Semail ophiolite massifs of the northern Oman Mountains, particularly in the basal dunite and harzburgite unit of the mantle section. Geological mapping of this region is challenging, primarily due to difficult access, complexity of structures, and lack of resolution and areal integrity of lithological differentiation using conventional mapping techniques. The present research study evaluates the discrimination and occurrence of chromites bearing mineralized zones within ophiolites by analyzing the capabilities of Landsat TM and Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) satellite data; using a number of selected methods including decorrelated stretching, different band rationing and Principal Component Analysis image processing techniques exist in the scientific literature. The study results show that the processed VNIR and SWIR spectral wavelength regions are promising in detecting the areas of potential chromite bearing mineralized zones within the ophiolite region, and proved to be successful for mapping of serpentinized harzburgite containing chromites. Exploration geologists, industrialists and mine owners are advised to adopt this technique and avoid the limits in filed data alone for more exploration and exploitation of areas having chromite deposits in arid region elsewhere.

AB - Economically viable chromite deposit occurrences are widespread in the ultramafic rocks of Semail ophiolite massifs of the northern Oman Mountains, particularly in the basal dunite and harzburgite unit of the mantle section. Geological mapping of this region is challenging, primarily due to difficult access, complexity of structures, and lack of resolution and areal integrity of lithological differentiation using conventional mapping techniques. The present research study evaluates the discrimination and occurrence of chromites bearing mineralized zones within ophiolites by analyzing the capabilities of Landsat TM and Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) satellite data; using a number of selected methods including decorrelated stretching, different band rationing and Principal Component Analysis image processing techniques exist in the scientific literature. The study results show that the processed VNIR and SWIR spectral wavelength regions are promising in detecting the areas of potential chromite bearing mineralized zones within the ophiolite region, and proved to be successful for mapping of serpentinized harzburgite containing chromites. Exploration geologists, industrialists and mine owners are advised to adopt this technique and avoid the limits in filed data alone for more exploration and exploitation of areas having chromite deposits in arid region elsewhere.

KW - Chromites

KW - Harzburgite

KW - Mineralized zone

KW - Oman

KW - Ophiolite

KW - Remote sensing

KW - Semail massifs

UR - http://www.scopus.com/inward/record.url?scp=84856109338&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84856109338&partnerID=8YFLogxK

U2 - 10.1016/j.oregeorev.2011.09.010

DO - 10.1016/j.oregeorev.2011.09.010

M3 - Article

VL - 44

SP - 121

EP - 135

JO - Ore Geology Reviews

JF - Ore Geology Reviews

SN - 0169-1368

ER -