Department of Higher Education (Lower Myanmar) and Department of Higher Education (Upper Myanmar)
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The Government of the Union of Myanmar Ministry of Education Department of Higher Education (Lower Myanmar) and Department of Higher Education (Upper Myanmar) Universities Research ournal Vol. 1, No.2 December, 2008. Universities Research Journal 2008, V(11. 1, No.2 Universities Research Journal 2008 Vol. 1, No.2 Editorial Board Editors in Chief Prof. Dr. Win Naing, Head of the Department of Geology, University of Yangon Prof. U Khin Aung Than, Head of the Department of Geology, University ofEast Yangon . U Ali Akaba Khan (a) U Tin Maung Htwe, Department of Geology, University ofMandalay Prof. Dr. Zaw Win, Head of the Department of Mathematic; University of Yangon Dr. Soe Soe Hlaing, Head ofMathematics Department, Yangon Institute of Economics Prof. Dr. Khin Aye Aye, Head of the Department of Mathematics, University ofMandalay Editors Prof. Dr. Aye Ko Aung, Head of the Departmerit of Geology, University of Dagon Dr. Chit Sein, Head ofthe Department ofGeology, University ofHinthada Prof. Ohn Myint, Head of the Department of Geology, University of Maubin Prof. Dr. Than Than Nu, Head of the Department of Geology, University of Mandalay Dr. Nyan Win, Head ofGeology Department, University ofLoikaw U Hla Myint, Head ofDepartment ofGeology, Shwebo Degree College Assis Leet. Dr Khin Khin Lin. Head of the Department of Geology, University ofBhamo Universities Research Journal 2008, Vol. 1,No.2 Prof. Yi Yi Thein, Head of the Department of Mathematics, University of Mawlamyine Prof. Dr. Win Kyi, Head of the Department of Mathematics, Yangon University ofDistance Education Prof. Myint Ohn , Head of the Department of Mathematics, University of Pathein Prof. Toe Aung, Head of the Department of Mathematics, University of Taungoo Prof. Dr Vee Myint, Head of Department of Mathematics, University of West Yangon Dr. Hla Hla Kyi, Head of the Department of Mathematics, University of Myeik Prof. Nu Nu Naing, Head ofthe Department ofMathematics, University of Magway Prof. Nu Nu Sein, Head of the Department of Mathematics, University of Monywa Prof. Dr Hnin 00, . Head ofthe Department of Mathematics, University of Yadanabon Prof. Dr Kay Thi Tin, Head of the Department of Mathematics, Meiktila Institute ofEconomics Mai Mae Khin, Head ofDepartment ofMathematics, University ofLoikaw Prof. 00 00 Myint, Head ofthe Department of Mathematics, University of Lashio Asso. Prof. Dr Than Than 00, Head of the Department of Mathematics, University ofKyainge Tong Universities Research Joumal2008, Vol. 1, No.2 Contents Page The Geology ofPhongum Razi Ranges Putao District, K.achin State 1 JRa Htay andAungKhin Soe Preliminary report on the study ofthe rock units exposed along the 11 Mongla- Kengtung- Tarchileik road section, Eastern Shan State Khin Khin Lin Revision ofthe Stratigraphy and Age ofthe Early Devonian 31 Zebingyi Formation, Myanmar Aye KoAung NewMaterials of Stegolophodon (proboscidea, Mammalia) from 49 the Irrawaddy Formation, Myanmar ChitSeinand Tin Thein NewMaterials ofTetraconodon malensis (Mammalia, Artiodactyla, 6S Suidae) from the Middle Miocene ofCentral Myanmar Thaung Htike, Zin Maung Maung Thein and Hnin Hnin Htay Palaeoecological andPalaeogeographical Significance ofthe 77 Rugose Corals from the Middle Devonian "Maymyo Formation" in Pyinoolwin Township Khalng Khaing San The Study ofFolding in Calc-silicate Rocks ofPinle-in Area, 89 Mandalay Division SawNgwe Khaing , A Study ofClay Minerals in the Maubin Area 103 Olm Myint. Thura Aung, Swe Zin Tham, Nay Soe, HtetHtetAung, ZizawQl' Win Naing, Myo Min andHtin Lynn Aung Tin-tungsten Mineralization ofZingyaik-Kadaik Area, Paung 119 Township, Mon State Than Htoo Aung Universities Research Journal 2008, Vol. 1, No.2 Page An Appraisal for the Mineral Assemblages to define Mineral 133 Isograds on Paragneiss from Latha-Phayargnokto Area, Patheingyi Township, Mandalay Division, Myanmar Zaw Win Ko and Win Min Soe Petrology ofDevonian Strata in Naungcho Area, Naungcho 147 Township Thein Htike Swe, Yan Naing Htun and Nyan Win Microbialites in the Thitsipin Limestone, Linwe-Kyauktaw Area, 163 Yengan Township, Southern Shan State Khin Khin Lin Stability ofTwo-Level Difference Method for PDE 173 Soe Soe Hlaing Finite Difference Method for Elliptic Partial Differential Equation 193 Win WinEi Numerical Approximations for Burgers Equation 203 SuSuAung Use ofFinite Element Methods for Dirichlet Boundary Value 213 Problem Khin Htay Kyi Numerical Method for A Mathematical Model ofA Suspension 231 Bridge Soe Soe Aye Propagation Property for Nonlinear Double-Degenerate Parabolic 239 Equation in Multi-Dimension Khin Than Sint A Study on Steady State Drift-Diffusion Model for Semiconductors 241 Khin Thi Numerical Schemes for the Euler Equations 261 Win WinNwe Universities Research Journal 2008, Vol. 1, No.2 Page Numerical Approximations ofOne-Dimensional Stationary Drift- 271 Diffusion Model for Semiconductor Cho Sandar Characterizing the Degree Sequences ofSigned Cycles and Signed 285 Stars Hla H/a Myint Applications ofEulerian Path and Tour 295 Sandar Mytnt, Win Win Mar and Yi Myint Spanning Trees with at most k Leaves in a K1,4-free graph 307 AUllg Kyaw Arc-Disjoint Path Pair (APP) Problem 323 Nang Kham Maing Characterization ofa Bipartite Graph and Its Hamiltonicity 337 Shwin Seinn A Study on Optimal Control ofRice Production in Taungoo Area 349 Aye Ko, Thin Thin Myatand Mi Mi Than Proximal Method for Equilibrium Problems 367 HlaHlaKyi The Weighted Locally Convex Spaces ofMeasurable Functions on 373 Np Family And Continutous Functions on Nachbin Family Saw MarlarAung and Kyi Htin Paw Universities Research Journal 2008, Vol. 1,No.2 Revision ofthe Stratigraphy and Age ofthe Early Devonian Zebingyi Formation, Myanmar Aye Ko Aung Abstract The Zebingyi Fonnation of Early Devonian (Pragian) age in the Zebingyi-Pyintha-Thondaung area which. is geologically known .as in part ofthe northern Shan State is revised with regard to its stratigraphy and age. The fonnation is now fonnally defined in accordance with the modem stratigraphic practice. It contains (30 to 170 metres) of shale, siltstone, limestone, and quartzose sandstone and is divisible into three members: Kbinzo chaung Limestone Member, In-ni chaung Limestone Member, and Doganaing chaung Orthoquarzite Member. The Khinzo chaung Limestone Member which is the basal part of the Zebingyi Formation essentially made up ofthin- to medium-bedded, grayto black, purple or red calcareous shale and siltstone partings with crowded dacryoconarid tentaculites (NowaJcia and StyJioJina), nautiloid cephalopods (MicheJinoceras), brachiopods (Plectodoma; Clorinda, Lissatrypa), trilobites (Cornuproetus), graptolites (Monograptus), and burrows. The In-ni chaung Limestone Member consists almost entirely ofmedium- to thick-bedded light gray or milky white, flaggy, dolomitic limestone showing only few traces of highly crystallized fossil fragments. The Doganaing chaung Orthoquartzite is characterized by brown to reddish, thin- to medium-bedded quartzose sandstone with no fossils. In most places of the Pyin 00 Lwin township, the Zebingyi Formation directly overlies the Nyaungbaw Formation ofEarly Silurian (Llandovery-Wenlock) age and the contact between the two units seems to be gradational. However, any fossils indicating three stages (Ludlovian, Pridolian, and Lohkovian) in the area are not yet reported. It may allow to consider whether the existence ofa possible disconformity between these two units or not, In the Zebingyi area, the Zebingyi Formation is unconformably overlain by the Thitsipin Limestone Formation (plateau Limestone) ofPermian age. The age ofthe Zebingyi Formation- Early Devonian is discussed on basis of fossil assemblages, The unit is correlatable with thecontemporary Early Devonian Pa Samed Formation of southern Thailand and Mahang Formation of northwest Malaya. Key words: stratigraphy, age, Early Devonian Zebingyi Fonnation. Professor, Department ofGeology, Dagon University 32 Universities Research Journal 2008; Vol. I, No.2 Introduction The current study concerns the sequence ofthe Zebingyi Formation, The unit is significant as it represents as the oldest Devonian unit in Myamnar and yields rich dacryoconarid tentaculite, . brachiopod, cephalopod, trilobite, graptolite, bryozoa, and coral (Aung, 2000b). Initial mapping found that the Zebingyi Formation was restricted in the Zebingyi area. The detailed mapping of the area by the author and his final year B. Sc. Geology students from Mandalay University (1982-1984) allowed to recognize that the Zebingyi Formation is fairly widely distributed on the western margin of the Shan Plateau although it is exposed as a thin interrupted band. The tentaculites from the basal part of the Zebingyi Formation provided correlation ofthe formation with the others in the Shan State and neighbouring regions such as Thailand, Malaysia, and China. The Zebingyi Formation is redefined herein and age of the formation is confirmed by its faunal evidences. To date, only a small nwnber of papers have been published exclusively or in part on the stratigraphy or faunas of the Zebingyi Formation. Reed (1906) described the Lower Paleozoic fossils from northern Shan State including Zebingyi fauna, from those two graptolites were re-identified by Berry and Boucot (1972). Jaeger (1983) described some graptolites ofthe Zebingyi Formation from Pyintha. The Zebingyi area was mapped by La Touche (1913), Than Tun (1968-70), field parties of the Department of Geological Survey and Mineral Exploration (1977), geology student field parties from Mandalay University