I= GEOCHRONOLOGICAL STUDIES OF THE CARBONATITE COMPLEXES WITHIN THE PESHAWAR PLAIN ALKALINE IGNEOUS PROVINCE USING FISSION-TRACK DATING TECHNIQUE
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Title of Thesis
GEOCHRONOLOGICAL STUDIES OF THE CARBONATITE COMPLEXES WITHIN THE PESHAWAR PLAIN ALKALINE IGNEOUS PROVINCE USING FISSION-TRACK DATING TECHNIQUE

Author(s)
Nimat Ullah
Institute/University/Department Details
National Centre of Excellence in Geology/ University of Peshawar,
Session
2006
Subject
Geology
Number of Pages
221
Keywords (Extracted from title, table of contents and abstract of thesis)
carbonatite, peshawar, alkaline igneous, fission-track dating technique, peshawar plain alkaline igneous province, paip, loe-shilman, sillai patti, khungi, jambil, koga, tarbela, petrogenesis, fission tracks, collisional tectonics

Abstract
The earlier workers have considered the carbonatite occurrences of northern Pakistan as the members of the Peshawar Plain Alkaline Igneous Province (PAIP), which is over a 150 km long and discontinuous belt of carbonatites and alkaline igneous rocks, extending from Pak-Afghan border in the west up to Tarbela area in the east. Within the PAIP, Carbonatite occurrences are found at the localities of Loe-Shilman in Khyber Agency, Sillai Patti in Malakand Agency, Khungi in Mardan, Jambil in Lower Swat, Koga in Buner, Tarbela near Topi along the west bank of River Indus and a seventh location recently discovered in the Jawar area about 4 km to the north west of Sillai Patti in Bajaur Agency.

No geochronological studies have previously been conducted on the Jawar and Jambil carbonatites of the region, while, available geochronological data on the other carbonatite occurrences of the region is very scarce. Except the Sillai Patti carbonatite occurrence, none of the carbonatites of the region has been studied with the fission-track dating technique before this study.

All the earlier workers have accepted the carbonatites of the Koga area to be of Carboniferous age. However, there has been a dispute over the emplacement time (s) of the Loe-Shilman and Sillai Patti carbonatite complexes. One group of geologists considers all the carbonatites and their associated alkaline rocks of the PAIP to have been emplaced during a single alkaline and carbonatitic magmatic episode of Permo-Carboniferous age in the region. However, a second group of geologists considers all the carbonatites and associated alkaline rocks of the PAIP were emplaced at least in two alkaline and Carbonatitic magmatic episodes, during the (i) Carboniferous and (ii) Tertiary (Oligocene), respectively. According to the second group of geologists, emplacement of the Koga carbonatite took place during the Permo-Carboniferous alkaline magmatism, while emplacement of the Loe-Shilman and Sillai Patti carbonatite carbonatite complexes took place during the Tertiary alkaline and carbonatitic magmatic episode.

Download Full Thesis
3368.8 KB
S. No. Chapter Title of the Chapters Page Size (KB)
1 0 Contents
111.6 KB
2 1 Introduction 1
179.22 KB
  1.1 Carbonatites: General Statement 1
  1.2 Methodology 2
  1.3 Field Work And Sampling 5
  1.4 Previous Work 6
  1.5 Construction Of Thesis 9
3 2 Fission Track Dating (A Review) 12
460.39 KB
  2.1 Fission Track Dating Procedure 12
  2.2 Annealing Of Fission Tracks 30
  2.3 Apatite And Exhumation 33
  2.4 Use Of Fission Track Analysis 33
4 3 Regional Tectonics 40
136.05 KB
  3.1 Collisional Tectonics In North Pakistan 40
  3.2 The Indian Block 41
  3.3 The Peshawar Plain Alkaline Igneous Province (Paip) Of Nw Pakistan And Associated Carbonatite Complexes 42
  3.4 Regional Setting 46
5 4 The Loe Shilman-Carbonatite Complex 49
520.41 KB
6 4.1 Petrographic And Geochemical Aspects Of The Loe-Shilman Carbonatite Complex 49
520.41 KB
7 4.2 Fission-Track Dating Of Apatite From The Loe-Shilman Carbonatites 69
520.41 KB
8 5 Fission-Track Dating Of Apatite From The Sillai-Patti Carbonatite Complex 87
178.64 KB
  5.1 Introduction 87
  5.2 Regional Geological Setting 87
  5.3 Local Geology 87
  5.4 Experimental Procedure 88
  5.5 Results 89
  5.6 Discussion 90
  5.7 Conclusions 92
9 6 Fission-Track Dating Of Apatite From The Jawar Carbonatite 100
200.57 KB
  6.1 Introduction 100
  6.2 Experimental Procedure And Methodology 102
  6.3 Results 103
  6.4 Discussion 105
  6.5 Conclusions 106
10 7 Fission-Rack Dating Of Apatite From The Jambil Carbonatites 116
175.44 KB
  7.1 Introduction 116
  7.2 Experimental 17
  7.3 Results 118
  7.4 Discussion 120
  7.5 Conclusions 121
11 8 Study Of The Tectonic Uplift History Of The Sillai Patti Granite Gneiss, Pakistan Constraints From Zircon Fission track Dating 131
181.96 KB
  8.1 Introduction 131
  8.2 The Alkaline Igneous Complexes Of The Northern Pakistan And The Sillai Patti Granite Gneiss 133
  8.3 Experimental Procedure 136
  8.4 Results 136
  8.5 Discussion 138
  8.6 Conclusions 139
12 9 Discussion 145
296.55 KB
  9.1 Interpretation Of The Fission-Track Age Data Of The Carbonatites Of Pakistan 145
  9.2 Origin Of The Carbonatite Occurrences Of Northern Pakistan 152
13 10 Conclusions And Implications 165
65.52 KB
14 11 References 170
1142.18 KB
  11.1 List Of Author’s Publication 183
  11.2 Publications 187