Research List

No.	Researcher	Title	Abstract	Year
1841	Tun Tun Win	ASSESSMENT OF SEISMIC SOIL LIQUEFACTION BASED ON SHEAR WAVE VELOCITY USING 2% AND 10% PROBABILITIES OF PGA VALUES WITH EARTHQUAKE MAGNITUDE-6.5 MW IN MANDALAY CITY	Mandalay city is located on the eastern bank of Irrawaddy River and about 8 km east of seismically active Sagaing fault. By this fault, Mandalay region has been experienced by many destructive earthquakes. All liquefaction events in Myanmar were observed nearly water body as rivers. Due to these conditions, the liquefaction susceptibility is threatening the Mandalay city. Liquefaction triggering of soils were mainly calculated based on 55 shear wave velocity tests by using 1998 NCEER recommended of Liq.IT v.4.7.7.5 software. The liquefaction potential (PL) maps were developed by using overall liquefaction potential index (PL). The liquefaction potential (PL) maps by using PGA 2% probability should be considered for the construction of lifeline structures such as water pipe line, gas pipe line, transportation ways and telecommunication lines. The PL maps using PGA 10% probability are appropriate for engineering construction of the various sorts of structures especially normal building. According to resulted data, the highly liquefied zones fall in the western parts of Aungmyaythazan and Chanayethazan townships. These PL maps will help the structural designers or architects and city planners to check the vulnerability of the area against liquefaction. The present data will be very useful not only for seismic hazard mitigation programs but also for seismic safety plans.	2021
1842	Wai Yan Lai Aung	THE EXISTANCE OF HERCYNITE IN METAPELITES FROM MOGOK METAMORPHIC BELT	Hercynite observed in the metapelitic rocks; sillimanite-garnet-biotite gneiss and felsic granulite rocks from Mogok and Momeik area. It is one of the spinel group minerals with the formula FeAl2O4. The present contribution provided and confirmed the presence of hercynite in pelitic rocks (gneiss and granulite) and pair essential assemblage of [Spinel (Hercynite)+Quartz)] in Mogok Metamorphic Belt indicate that these rocks were experienced in/ developed under UHT metamorphism.	2021
1843	Mi Mi Ko	DEPOSITIONAL ENVIEONMENT AND LITHOFACIES ASSOCIATION OF THE KANGYIGON CHAUNGSHE AREA, NYAUNG OO TWONSHIP, MAGWAY REGION	The Tertiary molassic sediments exposed in the Kangyigon Chaungshe area is covering about 19.5 square miles and situated between N 21?1? to 21?3? 30�� and E 94?57? to 95?0?. It falls in 84K/16 one inch topographic map. The area is mainly composed of sandstone, clay, shale and conglomerate in order of abundance. The stratigraphic succession in descending order is Padaung Formation and Shwezettaw Formation which are the age of Oligocene. On the whole, the petrographic characters of these formations are generally the same and fall within the same field of arkosic composition. Thus, only the stratonomic characters and primary sedimentary structural assemblages can differentiate one formation to another. On the basis of its distinctive lithologic features including color, bedding, composition, texture, fossils and sedimentary structures, at least 15 lithofacies has been recognized in the study area. In the Paleogene sequence of the area, at least three lithofacies associations has been established, delta plain, delta front and prodelta. The former two are concerned with Shwezetaw Formation and the latter one combined with delta-front (Subaqueous topset) is responsible for Padaung Formation. According to the field evidences and facies model, the depositional environments for Shwezettaw and Padaung Formations are deltic environments.	2021
1844	Zin Maung Maung Thein	PERISSODACTYLA FROM THE NEOGENE SEDIMENTS OF MYANMAR	The order Perissodactyla contains three distinct families, Equidae, Rhinocerotidae, Tapiridae, distributing in the tropical forest of Asia, North and South America and Savana of Africa. Extant species of this order are a remnant of the well-diversified group which probably originated during the Paleocene or early Eocene in Indian subcontinent. In Myanmar, fossil remains of this lineage have been documented in the Neogene sediments of central Myanmar representing Chalicotheriidae (Chalicotherium, cf. Nesterotherium and two indeterminate genera) Rhinoceritdae (�Diceratherium�, Brachypotherium, Rhinoceros, Dicerorhinus and one indeterminate genus) and Equidae (Hipparion and Equus). In contrast to the present day arid condition in central Myanmar, the occurrences of the forest dwelling perissodactyla such as chalicotherids, Dicerorhinus, Rhinoceros indicates the existence of the considerable forested condition in central Myanmar. Stable isotope results of the Hipparion and Brachypotherium also suggest the dominance of closed environment in central Myanmar until the Pliocene. The expansion of grassland in central Myanmar is probably later than or different from that of Siwaliks of northern Pakistan due to occurrences of forest dwelling mammals in the Pliocene or later periods	2021
1845	Zaw Lin Kyaw	DETERMINATION OF SITE EFFECTS OF SOIL CONDITION ON SPT VALUES FOR GROUND MOTION IN YANGON BUSINESS CITY, MYANMAR	The influence of local geologic and soil conditions on the intensity of ground shaking and earthquake damage has been known for many years. Local site effects play an important role in earthquake resistant design and must be accounted for on case by case basis. The nature and distribution of earthquake damage is strongly influenced by the response of soils conditions. This response is controlled in large part by the mechanical properties of the soil. Yangon, also known as business city, is the former major capital city in Myanmar. Yangon area is fairly earthquake-prone as Myanmar itself lies in a major earthquake belt of the world. It is noticed that the soil conditions and soil factor are incorporated. This part of fair to good foundation soils lies on a north-south trending anticlinal ridge of Neogene formations. The flanks, covered by the alluvium, are mostly occupied by satellite towns where the period values range from 0.13 to 1.00 seconds and the magnification factors are 3.2 to 5.0. This research is purposed to determine the predominant periods and amplification factors of Yangon business city by utilizing the geological map of Yangon and transfer function method. Especially for ground motion, transfer function method and SPT of drilling sites are used to develop the site effects condition of Yangon business city.	2021
1846	Su Su Khine	OBSERVATION OF LANDFORMS OF GRANITIC ROCKS IN PA NYIT BEACH IN LAUNGLON TWONSHIP, TANINTHARYI REGION	Many famous beaches are located at Dawei in Tanintharyi Region. Among them Pa Nyit Beach is situated in the westernmost part of Launglon Township. It is lying between Latitude 14�59?00?N to 15�02?30?N and Longitude 98�083?30?E to 98�05?30?E. It extends about 3.34 km from east to west and 5.85 km from north to south. The area covers about 19.52 square kilometers. In this area, the mountain ranges show the North-South trending. Regionally, three granite belts in the Dawei area are frontier range granite, central range granite and coastal range granite. The study area is located in the coastal range granite. Granitic rocks in the study area are hornblende biotite granodiorite, biotite granite, porphyritic biotite granite, microgranite and leucogranite. Aplite dykes and quartz and quartzofelspathic veins intruding into these rock units, especially biotite granite and microgranite. Both major and various minor landforms of granite are observed in the study area. Minor landforms are classified as weathering forms, tectonic forms and Structural forms. Observable weathering forms in the study area are blocks, boulders, exfoliation, pitting, sheet, flakes and spalls, polygonal cracks, gutter and grooves, pseudobedding and tafoni. Many of them are initiated in the surface. A-tent and orthogonal cracks are tectonic forms and they are formed by different ways of tectonic movements. Structural forms in this area are cleft, displaced blocks and split rocks, fault, joint, fracture and intrusive dykes and veins. Most of them are formed due to intrusive veins.	2021
1847	Me Me Aung	POTENTIAL LANDSLIDES ON WEATHERED GRANITIC ROCKS ALONG THE MYITKYINA-KANPETII CAR ROAD, KACHIN STATE	The Myitkyina-Kanpetii car road connects mainly Myitkyina-Waingmaw-Sadon-Kanpetii to China. It is about 80miles (96km) long that runs in east-west direction. Myanmar-China Border Gate is linked by this road consequently it transports goods for Kachin State so the economy of local people depends on it. During the rainy season, landslides often occurred along this road so local people encounter transportation and economic difficulties. This road is constructed on granitic batholiths thus two-third of the area is covered with granitic rocks. Based on field data, petrographic result and previous paper records, weathered granitic rocks are classified into two profile types: Type-A (without core-stones) and Type-B (with core-stones). Both types induce rockfalls and rock slope failures especially wedge failure and circular failure. We can deduce two potential landslides places for the study area. The first one is between the Bum Taung (N 25� 22' 54.8'' and E 97� 44' 7.7'') and Sadon village (N 25� 23' and E 97� 53' 12.1''). Another is between the Laphi village (N 25� 25' 30'' and E 97� 59' 20'') to Wai Mo village (N 25� 24' 30'' and E 98� 03'). The main facts to induce landslides are a period of high rainfall, increase pore water pressure and reduce soil cohesion, steep slope nature, road construction across the slope, deforestation, lack proper drainage system, and need effective retaining wall.	2021
1848	Than Than Thwe	HYDROCARBON POTENTIAL PF CRETACEOUS TETHYAN REALAM IN MYANMAR	Occurrence of organic matters in the Cretaceous marine fossiliferous limestones, viz., Thaungpwet Taung limestones exposed at the Second Defiles of Ayeyarwady River and Paungchaung limestones exposed at the eastern foothill of Mt. Victoria are studied. The identified fossil assemblages indicate that the paleobiogeographic locations of the two units were in the northern Tethys Sea during Cretaceous. Both lithofacies and biofacies analysis reveal that the light bluish grey limestones (Thaungpwet Taung Formation) were deposited in an opened lagoonal basin in the shallow marine shelf underlain by the well-oxygenated subsoils and later, the organic matters accumulated in the limestones were eventually replaced by calcites during diagenesis. The dark brownish grey limestones (Paungchaung Limestone Formation) were deposited as distal carbonate ramps in deeper sea with euxinic floor and later enrich with organic matters due to the worldwide oceanic anoxic event (OAE) which is indicated by the high ratio of smaller planktic foraminifers and dinoflagellates to the smaller benthic foraminifers, and occurrence of iron sulphide (pyrite) in the chambers of planktons� test. In addition, the planktic foraminiferal biostratigraphic zones recognized in the Paungchaung limestones indicate a coincidence with the mid-Cenomanian OAE which caused a large accumulation of organic carbon across the Tethyan realms. It is contrasted, that above two types of limestones have different amount of organic matters though a global event provided similar euxinic condition. Therefore, in can be regarded that the geometry of individual basin was major controlling factor to the physiochemical condition of each basin. Present study evidenced that Paungchaung limestones with high organic matters were accumulated during the mid-Cenomanian OAE occurred across the Tethys Sea. Indeed, these limestones underlie the Tertiary clastic sequences of Central Myanmar which are being drilled for the hydrocarbon industries.	2021
1849	Teza Kyaw	PETROLOGICAL SIGNIFICANCE ON GRANITOID ROCKS EXPOSED IN MYA YEIK- TA YAW GYIN AREA, MONYWA-SALINGYI SEGMENT OF WESTERN MYANMAR ARC	The present area is situated in the Monywa-Salingyi segment of Western Myanmar Arc that is composed of diverse igneous rocks during early Cretaceous to Quaternary age. Although the plutonic rocks having mafic to felsic composition are exposed, the present research emphasize only on granite and granophyre as granitoid rocks. Mineralogically, these granitoid rocks are mainly composed of quartz, orthoclase, plagioclase, hornblende, and biotite. The textures of granitoid rocks indicate in terms of volatile rich composition, highly differentiate and magma mixing condition of magma. Moreover, the mineral composition and textures strongly supports to interpret I-type, calcalkaline magma. Petrochemically, these rocks belong to the calc-alkaline suite and I-type granitoid. In addition, they can also be interpreted as the subduction related volcanic arc. Thus granitoid rocks were probably formed in an arc setting during subduction of Neo-Tethyan oceanic lithosphere.	2021
1850	Tint Swe Myint	TECTONIC SETTING AND PROVENANCES OF PANE CHAUNG FORMATION EXPOSED AT THE EASTERN PART OF INDOMYANMAR RANGE, WEST MYANMAR	The Pane Chaung Formation exposes at the eastern part of the Indo-Myanmar Range. It overlies on the Kanpetlet Schist and underlies by ophiolites. The present study intends to petrography and whole rock geochemistry for tectonic and provenances of this formation. Thirty samples of sandstone were collected from Kalay-Tiddim Road, Webula Section and Gangaw Section along the eastern IndoMyanmar Range that were made thin sections for petrographic study. Sixteen sandstones samples were collected for whole-rock major and minor oxide analyses. This formation consists predominantly of turbidite sandstones, graywacke, mudstone and shale. Graywacke, sandstone and shale interbedded units are dominant. The Halobia sp. is found at the Kalay-Tiddim Road that indicated the Triassic depositional age and deep water condition of salted Tethys Sea. The sandstones are composed of a detrital framework of angular to subangular, poorly sorted sand-sized grains associated with high matrix. The petrographic characters show the lithic wacke or greywacke. In the chemical composition, the SiO2/Al2O3 ratio ranges from 1.97 � 7.943 and Al2O3/SiO2 also ranges from 0.163-0.559. The Na2O/K2O ratio range from 1.01- 23.09 and K2O/Na2O range 0.228- 2.619. The geochemical characters indicate that the sandstones are wacke to greywackes. These chemical data show the tectonic environment of active continental margin to oceanic island arc. Their source rocks indicated by chemical data are acid to basic igneous rocks. So, these turbidite sandstones may be deposited at trench near the collision-subduction boundary of southern Asian margin during the closing events of Meso-Tethys at Triassic Period.	2021

Research Publications

Myanmar Academy of Art & Science List of Research