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Vol.1 , No. 3, Publication Date: May 18, 2018, Page: 115-123
 of Balochistan, Pakistan which represents the northern part of Bela ophiolite. The Nal ophiolites are scattered outcrops and erected in an elongated N-S trend which is relatively thin (in E-W direction) as compared to Bela ophiolites. In this study, these ophiolitic outcrops were mapped on the detailed scale, such a detailed plan of geological units of understudy area was not available before. The Nal ophiolite along with Bela ophiolite is emplaced on the Indian continental margin sediments in Paleocene. The Nal ophiolite consists of serpentinized harzburgite, serpentinized dunite, gabbro, norite, troctolite, diorite and pillow lavas and dikes. A large number of doleritic dikes and clinopyroxenite dikes are intruded in the mantle section of understudy area. In the second part of this study we have discussed the petrography of primary minerals which are composed of the rock units of Nal ophiolite. These rocks exhibit a variety of textures, commonly, porphyritic, glomeroporphyritic, amygdaloidal, ophitic to sub-ophitic, mylonitic, and porphyroclastic.&picture=http://www.aascit.org/aascit/decorators/img/journal/810.jpg)
| [1] | Mehrab Khan, Department of Earth & Environmental Sciences, Bahria University (Karachi Campus), Karachi, Pakistan. |
| [2] | Muhammad Jahangir Khan, Department of Earth & Environmental Sciences, Bahria University (Karachi Campus), Karachi, Pakistan. |
| [3] | Muhammad Ishaq Kakar, Center of Excellence in Mineralogy, University of Balochistan, Quetta, Pakistan. |
| [4] | Khalid Mehmud, Department of Earth Sciences, University of Sargodha, Sargodha, Pakistan. |
The ophiolite is exposed near Nal village (Khuzdar district) of Balochistan, Pakistan which represents the northern part of Bela ophiolite. The Nal ophiolites are scattered outcrops and erected in an elongated N-S trend which is relatively thin (in E-W direction) as compared to Bela ophiolites. In this study, these ophiolitic outcrops were mapped on the detailed scale, such a detailed plan of geological units of understudy area was not available before. The Nal ophiolite along with Bela ophiolite is emplaced on the Indian continental margin sediments in Paleocene. The Nal ophiolite consists of serpentinized harzburgite, serpentinized dunite, gabbro, norite, troctolite, diorite and pillow lavas and dikes. A large number of doleritic dikes and clinopyroxenite dikes are intruded in the mantle section of understudy area. In the second part of this study we have discussed the petrography of primary minerals which are composed of the rock units of Nal ophiolite. These rocks exhibit a variety of textures, commonly, porphyritic, glomeroporphyritic, amygdaloidal, ophitic to sub-ophitic, mylonitic, and porphyroclastic.
Keywords
Nal Ophiolite, Peridotite, Pillow Lava, Doleritic Dike, Mantle Section
Reference
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