Research List

No.	Researcher	Title	Abstract	Year
2791	Toe Naing Oo1, Agung Harijoko2 and Lucas Donny Setijadji3	CHARACTERISTICS AND GENESIS OF LOW SULFIDATION EPITHERMAL GOLD DEPOSIT AT KYAUKMYET PROSPECT, MONYWA MINING AREA, CENTRAL MYANMAR: IMPLICATIONS FOR CONCEPTUAL GENETIC MODEL	The Kyaukmyet prospect is situated in the Monywa mining area, Central Volcanic Belt (CVB), central Myanmar. The main objective of this paper writing is not only to describe the characteristics of low sulfidation epithermal deposit but also to modify the conceptual genetic model of research area. Gold mineralization hosted within rhyolite unit as colloform-crustiform quartz veins associated with gold and base metal (Zn and Pb) sulfide. The primary metallic minerals, in order of abundance, are pyrite, chalcopyrite, galena, sphalerite and gold; gangue minerals are mainly quartz, adularia, calcite, sericite, illite/smectite, and chlorite/epidote. The main types of wall-rock alteration comprise silicic, argillic and propylitic alterations. Microthermometric measurements of primary LV/VL fluid inclusion assemblages in quartz shows that the ore-forming fluids belong to low temperature (160-300�C), low-salinity (0.4�2.1 wt% NaCl equiv.). Estimated trapping hydrostatic pressures are 16 to 24 bars, corresponding to entrapment depths of 170 to 260 m below the paleowater table. The Kyuakmyet prospect is recognized as a low-sulfidation epithermal mineralization derived from a fluid source during a phase change in temperature and pressure interpreted as being related to fluid boiling. According to the characteristics of several varieties including wall rock alteration, ore mineralization and fluid inclusion analysis, our study may reveal to be classified deposit type and implication for conceptual genetic model at Kyaukmyet prospect, Monywa mining area.	2025
2792	Aung Kyaw Myat1, Hlaing Myo Nwe2 and Myint Myint Soe3	ASSESSMENT ON THE STABILITY OF SPILLWAY SLOPE CUTTING AT THE THA-HTAY HYDROPOWER PROJECT, THANDWE TOWNSHIP, RAKHINE STATE	The present research is carried out slope geology, geotechnical characteristics of rocks and slope stability analysis of spillway slope cutting at the Tha-Htay Hydropower Project, Thandwe Township, Rakhine State. This area is tectonically situated at the Central part of the Rakhine Coastal Belt. The rocks comprise the medium to thick bedded, indurated and moderately jointed sandstone intercalated with thinly laminated, fissile, partly carbonaceous shale and mudstone of Ngapali Formation (Middle Eocene). Most of the rock units are trending nearly NW SE in direction. The fracture system shows as closely spaced and moderately to highly jointed nature in the map of lineament analysis. According to geotechnical investigation, the rocks exposed along the spillway slope cutting site govern fair, poor and very poor rock classes respectively where the rock classes display CL and CM rock classes in this spillway slope site. Therefore, the supporting system should be installed with wire-mesh and rock bolt covering together shotcrete and systematic drained pipes. Moreover, some of the slope failures can be observed by kinematic analysis. Slope monitoring systems should be prepared on these slope sites. Hence, the selection of systematic supporting systems should be done on surface geological, geotechnical properties of rocks combined with design modeling.	2025
2793	Min Han Nyein1, Zin Nwe Khaing2, Nay Nwe Myo3, Hnin Ei Hlaing4	ASSESSMENT OF THE INFLUENCE OF HYDRAULIC AND GEOCHEMICAL FACTORS ON AQUIFER EVALUATION IN THE KYAUKPADAUNG AREA	The research area is located in Kyaukpadaung Township, Nyaung-U District, Mandalay Region. The area is lied between North latitude 20� 41' 56" to 21� 02' 7" and East longitude 95� 02' 58" to 95� 30' 37". The two stratigraphic units are 1) the Irrawaddy Formation (Late Miocene-Pliocene), and 2) the Pegu Group (Mid-Miocene). The Irrawaddy aquifer is the main aquifer of the research area. Chemical Analysis is important to specify the characteristics of groundwater. The concentration of hydrogen ions (pH) is between 6.67 and 7.77. The total dissolved solids are a maximum of 650 ppm. Electrical conductivity (E.C) is not more than 1000 ? mho/cm. The water type is classified by the methods of TDS, Piper, and Kurlov. According to the TDS, Piper, and Kurlov�s method, the research area is the freshwater types and the research area can be classified into 2 types and 4 types. The concentration of Bicarbonate ions is widely distributed in most of the water of the studied region and the amount present in groundwater is relatively higher than other anions. The specific yield of the groundwater is 1000 to 2000 gallons per hour for 4-inch diameter wells and the depth of the water-bearing horizon ranges from 40 ft to 270 ft in the Irrawaddy aquifer. Calculated by the pumping test, the transmissivity of the aquifer (KD) is 202 m2/day. Calculated by the recovery test, the transmissivity of the aquifer (KD) is 43.94 m2/day. The irrigation water types were analyzed by the methods of SAR, and MAR. According to these methods, the SAR method gets the 5 water types and the MAR gets suitable and permissible water types. The groundwater of the research area is evaluated as suitable for drinking water, domestic uses, and irrigation water.	2025
2794	Zin Nwe Khaing1, Zaw Myo Oo2, Min Han Nyein3	COMPARATIVE HYDROCHEMICAL ASSESSMENT OF GROUNDWATER FROM DIFFERENT LIMESTONE AQUIFERS: A CASE STUDY FROM PYIN OO LWIN AREA, MANDALAY REGION	The study area is located Pyin Oo Lwin Township, Mandalay Region. It lies between north latitude 21�57 'N and 22� 05'N between east longitude 96� 23'E and 96� 33'E. The study area is composed of mostly ridge and valley terrain and slightly occurs narrow flat land, it located within western part of the Shan Plateau region. The present area is mainly composed of five lithostratigraphic units mainly composed limestone and dolomite ranging in age from middle Ordovician to Devonian. May Myo dolomite aquifer, the thickness of the fracture zone is at (85 ft to 275 ft). Zebingyi aquifer can be occurred at Zebingyi and Bantha village. Naungbaw aquifer, the thickness of the fracture zone is at (300 ft to 355 ft) depth. The use of water for any purpose is guided under standard set of the WHO and other related agencies. The water quality for irrigation is calculated by Total Dissolved Solid, Sodium Absorption Ratio, Magnesium Hazard, Residual Sodium Bicarbonate, Potential Salinity, Kelly�s Ratio. Most of the TDS values of collected water samples from these areas do no exceed 1000ppm, but well no. (POL-3, 4, 7, and 17) contain higher than the 1000ppm. All of the water resource can be used for drinking purpose because of the low range of standard guideline value but some water samples contains high EC value.	2025
2795	Mya Moe Khaing1, Nway Cherry Win2, Kyu Kyu Hlaing3, Aung Min Thu4	PETROGRAPHY, PETROCHEMISTRY OF LAMPROPHYRES AND ECONOMIC ASPECTS IN WINPYAN QUARRY, BILIN TOWNSHIP, MON STATE	The research area is situated about 170 km north-east of Yangon and about 96 km north-west of Mawlamyine. Lamprophyres are melanocratic, porphyritic and hypabyssal rocks. Lamprophyre is mainly composed of hornblende, plagioclase, orthoclase and opaques. Under the microscopic study, this lamprophyre may be classified as spessartite; it has medium-grained porphyritic and panidiomorphic texture, dominantly comprising euhedral to subhedral forms of hornblende phenocrysts, groundmass of plagioclase and minor amount of K-feldspar and quartz. According to the chemical analysis data, MgO-K2O-Al2 O3 and Fe2O3-Al2O3-MgO ternary diagrams show that the samples fall in the lamprophyre field. MgO-Al2O3-CaO triangular diagram indicates that the samples fall in the field of alkaline lamprophyre. These lamprophyres have high K2O and Na2O concentration and show alkaline characters. Due to the alkaline characters, lamprophyres are porphyritic, volatile-rich igneous rocks, which are emplaced as dykes. Lamprophyre is observed as dyke intruding into the pyroxenite at Winpyan quarry. This dyke is a very late phase of large igneous intrusion. By the field investigation and petrographic analysis, the petrogenesis of lamprophyre may be considered as magmatic origin. Lamprophyre in the research area are generally thought to be derived from low degree partial melting of a lithospheric mantle that has been previously metasomatised by subduction-related fluids. Absolute age of the lamprophyre is still unknown, due to lack of radiometric dating of the rock. In the research area, the age of the biotite granite is 51.9�0.7 Ma (Eocene) in age. Therefore, the age of lamprophyre may be younger than Eocene age. Specular hematite ore minerals found near the lamprophyre dyke. Specular hematite has been used as jewellery; such as necklaces, rings and bracelets. By wearing specular hematite, it makes to treat disorders of the blood, to heal broken bones, to help the effects of electromagnetic fields and to protect toxic energy from computers.	2025
2796	Than Zaw1, Thin Thin Han2	INVESTIGATING THE PETROGRAPHY AND DIAGENESIS STUDY OF THE OKHMINTAUNG FORMATION: A CASE STUDY FROM CHAUNG ZON AREA, PWINTBYU TOWNSHIP, MAGWAY REGION	The reserach area is located in Chaung Zon Village, Pwintbyu Township, Magway Region. Okhmintaung Formation is characterized by light grey, medium to coarse grained, thick bedded to massive type sandstones intercalated with thin-bedded mudstones and bluish grey shales are also occurred. The sandstones of the Okhmintaung Formation may be termed as �Sublithicarenite�. Alteration of biotite to muscovite and oxidized biotite are more common in the Okhmintaung sandstone in the study area. The cementing material in the Okhmintaung sandstones are calcite and iron cements, glauconite, rutile and clay matrix. The common characteristics of late burial or phyllomorphic stage are the alteration of clay mineral into micas and the development of well crystallized phyllosilicate minerals.	2025
2797	Ye Kyaw Thu1, Than Zaw2, Khin Myo Si3, Soe Soe Aye4	PETROGRAPHIC AND GEOCHEMICAL STUDIES OF THE SPINEL BEARING PERIDOTITES EXPOSED IN SOUTHWEST OF MINDON TOWNSHIP, MAGWAY REGION	The ophiolite of the study area is a remnant of the Tethyan ophiolites preserved at the eastern margin of the Indo-Myanmar Orogenic Belt. Mineralogical features, textural relations and relative abundance of constituent minerals reveal that the samples are dominated by spinel lherzolite and spinel harzburgite with minor dunite, and characterized by olivine (>40 % volume) with varying amount of orthopyroxene and clinopyroxene. The samples display the preferred orientation of olivine, strain shadow, undulose extinction, kink bands of cleavage traces in pyroxenes, and are essentially spinel bearing suggesting derivation from deeper source in the mantle beyond the stability limit of plagioclase. Magnetite forms along fractures and rims of the spinel grains due to the result of cation exchange between spinels and coexisting silicates forming low pressure and low temperature metamorphic alteration. The samples have relatively homogeneous whole-rock compositions with Mg# values (90�92), and SiO2 (43.6 � 44.8 wt%), Al2O3 (2.5�2.9 wt%) and CaO (2.3�2.5 wt%) contents and enriched in transition metals. The samples have negative correlations between SiO2, Fe2O3, and CaO with MgO and are more similar to mid-oceanic ridge type. Correlating with the northern segment of the Western Ophiolite Belt it is likely suggest that the peridotite rock exposed in the northern and southern segment were formed in the mid-oceanic ridge setting and were accreted to the Indo-Myanmar Ranges from the downgoing Tethyan plate as part of subduction-accretion processes.	2025
2798	Sandy Chit Ko1, Tint Lwin Swe2	SEISMOTECTONICS INVESTIGATION IN YANGON REGION, MYANMAR	The Yangon city is located on the convergence of the Yangon and the Bago rivers where the north-south trending ridge in the middle is made up of Miocene rocks and associated river terrace alluviums. Several major earthquakes visited this region frequently, some of which caused major damage to the built environment including ancient monuments and religious structures. There are a few noticeable events in the 20th century with their epicenters fell in and near the city such as the 1927 Rangoon Earthquake, the 1930 Bago earthquake, and the 1978 Dedaye Earthquake of which Yangon felt intensity from VI to VIII. Recently, slight to moderate earthquakes happened in the northern Yangon area (M5.1), causing damage to buildings and structures. Furthermore, several small-magnitude earthquakes were recorded in the city of Yangon itself. Therefore, an attempt has been made to understand the mechanism and sources of these events. Knowing the background geology of the area, field surveys were carried out to identify the regional structural trends and seismically active elements. Survey works include outcrop mapping of geological elements from which structural trends, sense of shear, and stress orientation can be interpreted. Generally, the observed faults have strikes of approximately N-S, NNW-SSE, NE-SW, and WNW-ESE directions. Field structural data also show right lateral and oblique reverse motion with the direction of maximum principle stress in NNE-SSW to NE-SW directions. In addition to field geological surveys, moment tensor solutions of significant earthquakes published by seismological centers are used to identify the nature of movement when the respective earthquakes happened. The recent events at the northern Yangon areas are found to be related to the WNW-ESE structural trend with an agreement of fault motion between seismic moment tensor and geological structural results. Several major geological lineaments are observed by distinct geomorphological expressions: some of them are often associated with earthquakes such as the Sagaing Fault in the east, the Dedaye Fault and faults near the Ma-u-bin area in the west, the Bago Yoma Fault, the Htan-ta-bin and Satthwartaw in the north and some cross faults in the Bago Yoma. Some concealed faults in the Ayeyawady Delta and off-coast of Pyapon and some faults of the Yangon are also highlighted in this paper as seismically active. In terms of fault size and seismicity of each area, the potential hazard that each tectonic element can give rise to is also discussed.	2025
2799	Nilar Shein1, Zin Maung Maung Thein2, Maung Maung3, Khin Thazin Kyaw Gyi4	MICROFACIES ANALYSIS OF THE MAYMYO FORMATION IN PADAUKPIN AREA, PYIN OO LWIN TOWNSHIP, MANDALAY REGION	Maymyo Formation is widely exposed in the Padaukpin area in Pyin Oo Lwin Township, Mandalay Region. The present study focuses on microfacies analysis and facies association based on petrographic aspect and evidences for interpretation of depositional environment. Field method and laboratory method were used to determine the depositional environment of Maymyo Formation. The present study of microfacies analysis is based on the proportion of skeletal and non-skeletal component. Based on detailed petrographic analysis, Maymyo Formation may be divided into six microfacies. The nature and distribution of the fauna and the observed microfacies types, suggest the deposition of Maymyo Formation is reef facies under shallow marine conditions with low to moderate energy.	2025
2800	Kay Khine Nyein1	THE SPEECH ACT ANALYSIS IN THE MONKEY�S PAW BY W.W. JACOBS	This paper aims to explore speech acts through both discourse and pragmatic perspectives. In terms of the discourse-focused mode, turn-taking is one of the key components in speech analysis as it helps to understand the structure of a conversation and reveals how speech acts are used in context. From a pragmatic perspective, speech acts are crucial for understanding speakers� intentions and desires, which are difficult to identify because they are embedded in context. Specifically, this paper attempts to analyse various types of speech acts found in the short story The Monkey�s Paw. The first part of the research is based on Bennison�s (1998) framework on discourse analysis, which includes turn allocation and turn-taking, topic shift/control, and turn length in order to investigate how the characters interact and manage their conversational roles. It also builds on Toolan�s (1998) �give and take� model, which analyses dialogue based on speech functions such as offers, requests, informs and questions. In the second part, Searle�s (1976) speech act theory is applied to examine how the use of illocutionary acts in characters� utterances reflects their personalities in the horror story. It is found that the dominant pattern of turn-taking is �current speaker selects next�, which shows that speakers control the flow of conversation. In particular, Mr. White leads the conversation and allocates turns which indicate his dominance in the interaction. Moreover, most characters prefer discussing a particular topic rather than shifting to another; this reveals their strong interest in the mysterious power of the paw. Regarding turn length, Morris�s turns are the longest as he provides detailed explanations about the monkey�s paw and its effects. It is also found that the most frequent type of speech act is representatives followed by directives and expressives, while the least frequent type is commissives. No declaration is found in the horror story. The dominant use of representative speech acts in Mr. White�s utterances reveals that he is rational and disbelieves in supernatural power. In addition, more directive speech acts are found in Mrs. White�s utterances in Part III, where she commands her husband to make a second wish. This highlights the protective nature of a mother and her emotional instability. Moreover, the two main characters lead the conversation by taking more turns, and the majority of spoken exchanges occur among family members.	2026

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