GEOLOGY OF THE PENGKALAN HULU-BETONG TRANSECT ...

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2 6°15'N 6°0'N 5°45'N 5°30'N 101°0'E 101°15'E M A L A Y S I A Tasek 101°0'E T H A I L A N D Amphoe Betong Pengkalan Hulu Kelian Intan Amphoe Than To T H A I L A N D M A L A Y S I A Gerik Bersia 6°15'N 6°0'N 5°45'N 5°30'N 101°15'E 20° N 15° N 10° N 5° N 95° E 95° E 0 150 300 600 900 1,200 1,500 Legend 100° E Town Roads Figure 1: Location map of the Transect area. THAILAND Bangkok 100° E Kilometres International Boundary Streams MALAYSIA 105° E <strong>TRANSECT</strong> AREA Kuala Lumpur 105° E 20° N 15° N 10° N 5° N
On the Thai side, detailed systematic geological mapping in the Transect area was carried out during February 2003 and re-checked during March 2003 by geoscientists of the Bureau of Geological Survey, and Bureau of Mineral Resources of the Department of Mineral Resources, Thailand. Joint field checks were later carried out along the Transect area on the Malaysian side (25 th to 28 th April 2003) and on the Thai side (29 th April to 1 st May 2003) by the geoscientists of both countries. Discussions, exchanges of ideas and information on the geology and mineral resources of the Transect area were also conducted by the Malaysia-Thailand Working Group. Agreements on geological mapping units on both sides of the Transect area were resolved based on the lithological, paleontological and structural similarities that enabled the Working Group to delineate the mutually agreeable geological boundaries. A preliminary geological report and map on the scale 1:100,000 covering the Transect area was prepared and discussed during the First Interim Meeting (24 – 27 April 2003). Maps and reports of the Transect area were jointly prepared and finalised by the Malaysia-Thailand Working Group. The main objectives of this study are to get a better understanding on the local geology, to solve problems on the geological boundaries of the rock units and to study their correlation within the survey area by using stratigraphic succession, lithologic similarities, and fossils assemblages discovered during the survey or reported by the earlier workers. The occurrences of mineral deposits on both sides of the Transect are also taken into consideration. A Figure 2: Photographs showing topography of the Transect area A - Gunung Kenerong (higher) and Gunung Kerunai (lower) on the Malaysian side of the Transect area. Photograph facing to SE from Gerik-Pengkalan Hulu road. B - Topography of the Transect area on the Thai side. B 3
Page 5 and 6: GEOLOGY OF THE PENGKALAN HULU-BETON
Page 7 and 8: PREFACE This report together with t
Page 9 and 10: Geology of the Pengkalan Hulu-Beton
Page 11: granite (Trgrbp/pr) and Kawi granit
Page 14 and 15: x LIST OF FIGURES Page Figure 1: Lo
Page 17: 1. INTRODUCTION The Malaysia-Thaila
Page 21 and 22: Basir Jasin (1995) reported the occ
Page 23 and 24: Permian as indicated by the presenc
Page 25 and 26: Central - North Peninsular Malaysia
Page 27 and 28: The Permian Ratburi Group (Prb), un
Page 29 and 30: Figure 5: General succession of the
Page 31 and 32: Era CENOZOIC MESOZOIC P A L A E O Z
Page 33 and 34: strong isoclinal folding, faulting,
Page 35 and 36: A B Figure 8: Argillaceous facies o
Page 37 and 38: Fossils and age According to the ea
Page 39 and 40: metaconglomerate occurs in the uppe
Page 41 and 42: The lower part of the formation is
Page 43 and 44: Figure 14: Stratigraphic sequence o
Page 45 and 46: A Figure 16: Photographs showing th
Page 47 and 48: the banks of small rivers and strea
Page 49 and 50: Figure 18: Stratigraphic sequence o
Page 51 and 52: A C Figure 20: Photographs of the u
Page 53 and 54: Lithology The Tham Krachaeng format
Page 55 and 56: 3.1.4 The Gerik formation (Pgk) The
Page 57 and 58: Small amounts of interbedded sedime
Page 59 and 60: Depositional environment Based on t
Page 61 and 62: nomenclature of the Nenering beds (
Page 63 and 64: A B Figure 33: Exposures of the Nen
Page 65 and 66: A B Figure 35: Outcrop of Basal Gra
Page 67 and 68: The rock sequence of the Nenering b
Page 69 and 70:
3.3.1 Rimba Telui/Si Nakhon granite
Page 71 and 72:
3.3.2 Bintang granite (Trgrbt) Dist
Page 73 and 74:
A B Figure 41: The Chantharat grani
Page 75 and 76:
intrusion of the granitoids mention
Page 77 and 78:
The Silurian-Devonian rock sequence
Page 79 and 80:
5.2 Metallic Minerals The occurrenc
Page 81 and 82:
arsenopyrite and grossularite are c
Page 83 and 84:
British American Tin Mines Company
Page 85 and 86:
5.3 Non-Metallic Minerals and Hot S
Page 87 and 88:
Figure 50: Limestone quarry at Buki
Page 89 and 90:
Ban Bor Nam Ron, 9 km north of Beto
Page 91 and 92:
well-cemented, poorly sorted matrix
Page 93 and 94:
Foo, K.Y., 1990. Geology and Minera
Page 95 and 96:
Sashida, K., Nakornsri, N., Ueno, K
Page 97 and 98:
Appendix 1: List of the Malaysian W
Page 99 and 100:
Appendix 3: XRD analysis results fo
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GEOLOGY OF THE PENGKALAN HULU-BETONG TRANSECT ...

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