Research List

No.	Researcher	Title	Abstract	Year
661	Khine Zar Wai	PETROCHEMISTRY AND TECTONIC IMPLICATION OF HIGH K-CALC-ALKALINE SERIES, PERALUMINOUS S-TYPE GRANITOIDS OF KYAING TONG, SHAN STATE (EAST), MYANMAR	The study area is situated about 8 km north of Kyaing Tong. It covers a part of UTM map sheet No.2199/11. Areal coverage is about 130 square kilometers. Regionally, the study area comprises the Eastern High Lands Province, located in the western part of the Shan-Thai Block. The present area lies within the Eastern Granitoid belt of Myanmar, comprise in mostlyigneous units in the area. Representative samples from the study area were used to analyze the geochemical study of the granitoid rocks. Although Kyaing Tong batholith mainly consists of biotite granite, porphyritic biotite granite, foliated granite, hornblende granite, granodiorite and leucogranite, this study will focus on geochemistry and tectonic setting of Kyaing Tong S-type granite. A total of 7 representative samples have been selected and analysed for this study. The whole rock major oxides and trace element compositions were analyzed by XRF (X-ray fluorescence) spectrometer using standard calibration method at Economic Geology Lab., Department of Earth Resources Engineering, Kyushu University, Japan. Fresh rock specimens of about 0.5-1kg were crushed for XRF sample preparation method. Major oxides analysis was carried out on fusion discs and trace elements were pressed powered pills. Aims of this research which are: to study geochemical characteristics and to interpret the tectonic setting of the study area, tectonic discrimination diagrams were illustrated by using PetroGraph 2Beta software and GCD kits software. All analyzed samples fall in in acid group, recognized in subalkaline/tholeiitic series. Kyaing Tong granitoid rocks are the high abundance of Cr, Rb Ba, S, Zr and Sr. Based on the geochemical data, most granitoid rocks belong to the peraluminous field. Kyaing Tong S-type Granitoids of subduction related rocks due to the collision effects of Sibumasu and Indochina Block during Late Triassic closure of paleotethys, later Indosinian orogeny event.	2020
662	Yu Yu San	PETROLOGY AND STRUCTURES OF VOLCANOCLASTIC SEDIMENTARY ROCKS AND IGNEOUS ROCKS IN SHINMATAUNG AREA, PAKOKKU TOWNSHIP, MAGAWE REGION	The study Shinmataung area situated between latitudes (21� 33� to 21� 37�) N and longitude (95� 4� to 95� 10�) E. Volcanic eruption might occur during and after the time of deposition of Irrawaddy Formation. Bender (1983) stated that west zone of �Pegu - Mt. Popa Line� begins south of Kabauk Village in the Shinmataung area and runs for about 100km with width of up to 18km via Salingyi, Silaungtaung and Twintaung to Natyintaung in the N. The lower Chindwin volcanic including Shinmataung area is situated north of Mt-popa and NNW striking section of the Central Volcanic Arc. The rocks are Tertiary in age except the igneous rocks of Salingyi area. Igneous rocks of the study area are rhyolitic agglomerate, breccia, diorite, olivine basalt, andesitic tuff and altered andesite. During the Miocene to sub-recent time, episodes of intermittent volcanic activity have been firstly recognized in the present area. The first phase was the extrusion of andesites. This activity appears to have been followed by the violent activity going rise to andesitic tuff-cones associated with rhyolitic agglomerate and breccia. Igneous rock units are also occurred in the western part of the present study area. These rock units are occurred isolated cone shaped hill half miles east of Kabauk village and Thardon- U hill about one mile south east of Kabauk. Moreover, dacite, fine-grained igneous rock also occurred in the valley between Taungnigyi and Shinmataung hill. Igneous rock units hill, lying nearly parallel to the Shinmataung hill, The study area (Shinmataung) is located in the Central Cenozoic Belt of Myanmar. Geologically, it is situated on the northeastern most edge of the Minbu Basin. This basin is a kind of gradually subsiding geosyncline related to subduction of India Plate beneath the Burma Plate in which tremendous thickness of clastic sediments were deposited during Oligocene to Pliocene?. The Shinmataung area is located in Yesagyo Township, Pakokku District, situated between are separated by a fault valley. Contact between igneous and sedimentary rocks can be noted beside Taunggya-Kabauk cart tract. In the Shinmataung area is the contemporaneous volcanic intercalations towards the base of the Oligocene and towards the upper limit of the composed strata.These volcanic rocks have been recorded as Miocene age in the present study area.	2020
663	Myo Ma Ma Htwe	COMPARATIVE STUDY ON GEOCHEMISTRY AND TECTONIC IMPLICATION IN TWO VOLCANIC ENVIRONMENTS: SINGU AREA AND KYAUKPHYU-WEBAUNG AREA, MANDALAY REGION	The objective of this paper is to present the main results of a comparative study of geochemistry and tectonic implication on Singu Area and Kyaukphyu-Webaung Area. The Singu area is composed mainly of the basaltic rocks from the younger lava of Singu Plateau. Singu Lava Plateau is made up of a thick pile of very fluid basaltic flows displaying segregation structure. They form a 100 km2 plateau which overlies Mio-Pliocene sandstones as well as the upper part of the Irrawaddy Formation. Most basaltic rocks of Singu area are aphanitic, glassy, and pyroclastic rocks in which plagioclase and pyroxene are major constituents with subordinate amounts of olivine and Fe-Ti oxides. Basaltic rocks often show porphyritic, vesicular and trachytic texture. Major element data suggest that the Singu lava are predominantly of basaltic trachyandesite and show the alkaline nature. According to the immobile trace element concentrations, the basaltic rocks are dominated by alkali basalt. The trace element geochemistry suggests geochemical characteristic of Within-Plate Basalt. Lavas from the Singu area show a clear intraplate character with no subduction signal. In Kyaukphyu-Webaung area, the basaltic rocks are mainly composed of olivine, plagioclase and pyroxene and minor amount of chrome spinel and opaque minerals. They show porphyritic, trachytic texture and reaction rims. According to the major element data, the volcanic rocks fall in tephrite, trachy basalt, basalt and basaltic andesite. They show tholeiitic and calc-alkaline character. The spider diagram of the basaltic rocks confirm that the basaltic lavas are originated from variable partial melting degrees of subduction-related mantle source and island arc nature. The trace element analyses of the basaltic rock samples indicate that these are having characteristics of either IAT or transitional between MORB and IAT and they have formed in supra-subduction zone tectonic setting. This suggests that there may be significant tectonic differences between Singu Area and Kyaukphyu-Webaung Area.	2020
664	Mya Moe Khaing	PETROCHEMICAL CHARACTERISTICS AND GEOCHRONOLOGY OF THE IGNEOUS ROCKS IN BILIN AND ITS ENVIRONS, BILIN TOWNSHIP, MON STATE	The research area is located in Bilin Township and its vicinity, Mon State. It lies between Lattitude 17?12?45?N to 17?21?45?N and Longitude 97?09?00?E to 97?14?45?E. The total area coverage is about 116.5 km2 . Four samples were sent to ALS laboratory of Geological Survey of Japan and analysed by XRF and LA-ICPMS. Eight samples were analyzed at DSSTRC (Defence Service Science and Technology Research Centre) in Pyin-Oo-Lwin Township and seven samples were sent to Geology Department, Mandalay University for XRF analysis. Geochemically, biotite granite, biotite-muscovite granite and biotite microgranite show chemical composition (weight percent) of SiO2 (69.4 - 75.96), Al2O3 (13.34-16.8), TiO2 (0.154-0.284), Na2O+K2O (7.765- 10.31), Fe2O3+MgO (1.149-2.64), MnO (0.039-0.151), CaO (0.897-3.14) and P2O5 (0.027-0.159), suggesting calc-alkaline series and are predominantly peraluminous. Diorites and microdiorite exhibit SiO2 (52.3-55.95), Al2O3 (17.69-22.3), TiO2 (0.738-0.973), Na2O+K2O (4.95-6.364), Fe2O3+MgO (9.211-13.35), MnO (0.121-0.359), CaO (5.435-7.51) and P2O5 (0.285-0.602); proposing calc- alkaline series and are metaluminous. According to Harker�s variation diagrams, TiO2, Al2O3, Fe2O3, MnO, CaO, MgO and P2O5 are negatively correlated with SiO2 and then Na2O, K2O are positively correlated with SiO2. Result from geochemical analysis, biotitemuscovite granite and some biotite granites have high sodium content, normatic corundum ranges from 0.831 to 0.974 and biotite microgranite is low in sodium content, NaO2 Vs K2O diagram shows that the granitic rocks involve both I and S-types, Chappell and White (1994). Based on the tectonic discrimination diagram of Maniar and Piccoli (1989), the granitic rocks fall within the IAG+CAG+CCG field. In Y Vs Nb diagram; all the granitic rocks fall in the field of Syn-COLG and VAG. Y+Nb Vs Rb diagram indicates that all granites fall in the VAG field. U-Pb zircon dating of the biotite granite from the northern part of Lakhin pogoda gives the age of 51.9 0.7 Ma and suggests that the biotite granite was emplaced in Eocene.	2020
665	Min Min Khaing	GEOLOGY AND HEAVY MINERAL ANALYSIS OF LOOSE SAND FROM AUKZEIK AREA, THE KALEKOK ISLAND, LAMING SUB-TOWNSHIP, MON STATE	Heavy mineral analysis was systematically carried out mainly focus on the beach sand of the Kalekok island. It is situated about 144km south of Mawlamyine and about 35 km north of Ye township, Mon State. It lies between latitude N 15?29?00? to 15?32? 30? and longitude E 97? 38?30.00? to 97? 40? 15.00? in one inch Topographic Map no.95 E/10. The topographic features of the whole area are generally mountainous and the drainage pattern show medium to coarse texture, subparallel pattern. The igneous rocks are microdiorite, hornblende biotite granodiorite with microdiorite xenoliths, biotite granite and leucogranite. The probable age of the igneous rocks may be emplaced in Early Cretaceous. The study area falls in tropical monsoonal climate and the annual rain fall is 99.83". The maximum temperature is 36.2?C and the minimum temperature is 20.14?C. The wind speed lies between 6 to 25 mph and most of wind direction is SW, E and SE directions. The XRF assay results and average heavy mineral data of the research area related to the silicic igneous origin, related to high rank metamorphism and the deposition through Triassic to Miocene. Titanium, zirconium, ilmenite, monazite, magnetite, REEs and radioactive elements are commonly occurred. These minerals are very important for industrial purposes and economical point of view. This research is supporting for the genesis of heavy minerals and related rocks, to get foreign income of the country, to explore the ore mineral resources, to development of industrial zone, to get the opportunities of employment for the local people, to maintain and reduce the damage of the coastal�s natural environment.	2020
666	Wathon Chitt	PETROGRAPHICAL AND PETROCHEMICAL ANALYSES OF IGNEOUS ROCKS OF LAUNGZIN AREA, MOGOK TOWNSHIP, MANDALAY REGION	The study area is situated in Mogok Township, Mandalay Region. It is bounded by latitude 22�42'00"N to 22�54'00"N and longitude 96�19'00"E to 96�27'00"E. The igneous rocks exposed in the study area consist of pegmatite and granite. The 16 granitoid samples were analyzed for major and trace elements by XRF method. Most of the peraluminous granitoids are plotted in felsic peraluminous field, one biotite microgranite falls in high-peraluminous field, one biotite microgranite and one tourmaline granite fall in moderate-peraluminous field and one hornblende granite fall in low-peraluminous field. According to the major and trace elements composition granitoids of the study area are both of S-type granite and I-type granite. Major elements analysis indicates that most of granitoids belong to the field of IAG, CAG and CCG and they correspond to syn-collision and late orogenic zone. Moreover, trace elements composition shows these granitoids belong to the field of VAG and syn-collision granite and they are tectonically located in the active continental margin. Economically important rare earth elements are discovered in the study area in granitoids and pegmatites.	2020
667	Myo Thiri Sandar Aung	GEOCHEMISTRY OF SUBDUCTION RELATED LAMPROPHYRES FROM MOKPALIN-KANNI AREA, MON STATE, MYANMAR	The study area is located within southern part of the Mogok Metamorphic Belt and Slate belt, Kyaikhto Township of Mon State, Myanmar. It is consisting of meladiorite, diorite and granitic rocks intruded by a variety of lamprophyre dykes. Most of lamprophyres are fine-grained, porphyritic in nature, with phenocrysts of hornblende, feldspar and sometimes biotite. Occasionally, medium-grained textures of spessartite are observed and their strikes are trending NE direction. There are three types of lamprophyre encountered in the study area, which are camptonite, minette and spessartite. The whole rock chemical compositions are wide span range of SiO2 (52.47-60.06), CaO (4.28-6.8), MgO (2.5-5.1) and Fe2O3 (5.6-9.6) consisting mainly of calcalkaline to high-K calc-alkaline. Lamprophyres fall within the basaltic andesite-basaltic andesite, and trachy-andesite field. Enrichments in Cs, Rb, Ba and Th while depletion in Nb, and Ti were generated from the partial melting of the subducted related shallower mantle lithosphere. Trace element ratios, the pattern of the LREE to HREE show that the rocks were come from spinel lherzolite mantle (< 50 km depth) rather than garnet lherzolite mantle source. Calc-alkaline of lamprophyre related to the eastward late-subduction of Tethys II of the ancestral Indian Ocean.	2020
668	Thet Paing Kyaw Win	PETROGRAPHY AND PETROCHEMICAL CHARACTERISTICS OF SKARN AROUND MONBINZON VILLAGE AND MINBON TAUNG AREA, THAZI TOWNSHIP, MANDALAY REGION	The study area falls 24.3 km southeast of Thazi at Mandalay Region that covers two types of rocks; igneous and metasedimentary rocks. Meta-sedimentary rocks consist calc-silicate rocks and skarn. Calc-silicate rock occurred as roof-pendant, visible ridges and furrows nature. Skarn are exoskarn that subdivided into garnet skarn and garnet-clinopyroxene skarn. It contains garnet, diopside, plagioclase, quartz and tremolite. According to petrochemical study, the massive garnetclinopyroxene skarn exhibit much flatter profiles in Chondrite-normalized REE patterns that indicating the garnet may preferentially concentrate HREE. In Harker variation diagrams, SiO2, TiO2 and K2O show a systematic decrease from diorite to skarn and FeOt display general increase to skarn rocks due to mass transfer during metasomatism. Cu, Zn and Y enrichment in skarn is relative to granite. Sr exhibits a perceptible decline in the direction of exoskarn.	2020
669	Wai Yan Lai Aung	MORPHOLOGY OF PYRITE AND ITS SIGNIFICANCES FROM BAWLONELAY AREA, MOGOK	In the marble of the Mogok Metamorphic Belt from Bawlonelay area, Mogok Township, pyrites crystals exhibit a wide range of different morphologies during regional metamorphism. The pyrite crystals are commonly found as cube, octahedra and cubo-octahedra, pyritohedra and cubopyritohedra habits in the research area. On the basis of pyrite crystal habits, they could form under the different temperature condition which controls the speed at which the crystal grew. Moreover, these pyrite crystals are found in association with ruby in the marble from Bawlonelay. Blue corundum (sapphire) is not associated with ruby in the primary gemstone-bearing bands indicates that available Ti may have been used up in forming sphene (titanite) which is a common associated mineral in these bands. There has no more Ti available to form blue sapphire. The present study would like to consider the hypothesis is that ruby in the marble from Bawlonelay together with pyrite indicate that the original limestone contain impurities of aluminous and iron rich materials. Although there has enough alumina from the intruded igneous rocks (i.e syenite), the element, Fe, that would be formed for the formation of sapphire were already used up as the crystallization of pyrite which is found in association with ruby in the marble of Bawlonelay and no more excess Fe for the formation of sapphire.	2020
670	Lai Lai Min	GEOLOGY, ORE OCCORRENCE AND ORE PROCESSINGOFCOPPER DEPOSITS, MONYWA, SALINGYI TOWNSHIP, SAGAING REGION	In copper processing, many kinds of application methods are using in the world depend on the ore genesis, local environmental regulations and other factors. Among of these methods, in Monywa copper mine area, the electrowinning process is used for the concentrate of copper ore production. Processing of the copper ore involves three stages; Bio-Heap Leaching to dissolve the valuable copper from the ore, solvent extraction to purify and concentrate the copper solution generated by leaching and electrowinning to plate the copper metal into cathode sheet form. Mine reclamation is the process of restoring land that has been mined to a natural or economically usable state. Although the process of mine reclamation occurs once mining is completed, the planning of mine reclamation activities occurs prior to a mine being permitted or started. Electrowinning (EW) process is an environmental friendly way to economically produced high-grade copper from lowgrade ore deposit. Kyisintaung and Sabetaung Mines adhere to a strict zero discharge operation and all solution flows are re-circulated to ensure that no effluence is discharged from the mine to outside of lease area. Letpadaung mine produces cathode copper that complies with Landon Market Exchange (LME) Grade-A rating and is more than 99.99% in purity. Therefore, using of Electrowinning (EW) method is slightly better than the other methods.	2020

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