ASEAN Minerals Information

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ASEAN Minerals Information

Distribution of Trace Elements in Clay and Coal of Pa Kha Coalfield

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Abstract

Trace element dispersions in sediments associated with coal seams in Pa Kha basin, Amphoe Li, Lamphun province, Northern part of Thailand, are depending on the depositional environment during the coal and sediment accumulation. In both coal zones, arsenic and cobalt show reverse proportion to the ash content while other elements show no perspicuous relationship. The greenish layer of the interburden contains the highest concentration of the elements in a basic volcanic rock. The contents of such elements, especially chromium, nickel and vanadium, could indicate the volcanic eruption during the deposition of Pa Kha coalfield.

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Coal, Oil, Oil Shale - Bearing Formations in Intermontane Basins of Thailand

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Abstract

The intrusion of S-type granite commencing in Late Cretaceous time along the western half of Thailand produced tensional fault systems which gave rise to isolated intermontane and intercratonic basins throughout Thailand. During the Tertiary period,coal,oil, and oil shale-bearing formations accumulated in these basins. The associated facies, floral, faunal, and microfossil contents indicate that most deposits accumulated in freshwater environments with occasional marine incursion in northern Thailand, while littoral environments dominated in southern Thailand.

In northern Thailand, Cenozoic deposition may be divided into three periods, vis: fault-graben development ; organic sediment accumulation; and diagenetic periods. The fault-graben development period is represented by the Nong Bua Formation which comprises a fluvial fining-upward sedimentary sequence. In the organic sediment accumulation period, the following nine Formations are recognised: Lower Mae Tun Formation of intramontane forest swamp environment; Li, Upper
Mae Tun, Pratu Tao and Mae Long Formations of fluvial-forest/fluviolacustrine environment; Lan Krabu, Lower Mae Sod, Upper Mae Sod and Mae Moh Formations of lacustrine environment. In the. diagenetic period, six fluvial and fluviolacustrine Formations are recognised . They are Mae Fang, Huai Luang, Yom, Ping, Moei River and Mae Taeng Formations.

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Coal Seams Correlation of Li Coal Deposits

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Abstract

Geochemical analysis had been performed on sediments associated with coal deposits in Li basin, Changwat Lamphun, northern Thailand. Greenish sediments can be correlated using some geochemical significant elements, Cr, Ni, and V. The lithostratigraphic correlation can be pointed out that the coal deposits at Ban Pu, Na Klang and upper part of Ban Pa Kha areas to be occurred at the same events.

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Coal Potential for Future Investment in Thailand

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Abstract

According to the National Economic and Social Development Plans No. 6 (1987-1991) and No. 7 (1992-1996), coal is significantly the major alternative energy resources for both power and non-power usages. The Cabinet had the resolution on coal policy in June 1987 to give the duties of coal management for each government sectors, i.e., the Department of Mineral Resources (DMR), the Department of Energy Affairs (DEA), the Electricity Generating Authority of Thailand (EGAT), and the National Energy Policy Office (NEPO). DMR has been assigned to responsible in conducting of all exploration works throughout the country, issuing and granting coal concessions, royalty determination, and conducting concession bidding.

The demand of domestic coal for power plants will increase from 11.94 million tons in 1992 to about 14 million tons and 36 million tons in 1996 and 2001, respectively; whilst that for non-power usage from 4.59 million tons in 1992 to 10.48 million tons in 1996 and so on. This high increasing consumption will be caused by additional electric generation supplies, and also the enlargement of cement plants.

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Coal in Northeast Thailand

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Abstract

Mainly coal resources in Thailand deposited during Tertiary period. More than 99 % of coal reserve in Thailand is of Tertiary which located in most parts of  Thailand except in Northeast. The other coal resource deposited during Carboniferous period and found only in the Northeastern part of Thailand. The Northeast Thailand is relatively large region but is very rare coal reserve. From the result of many geological surface mapping and other method surveys which conducted over 50 years ago until present day still reported the small scale commercial coal resources in Na Duang and Na Klang areas. Although. there are previous works reported some coal outcrops in red bed Mesozoic rock but there are clearly noncommercial resources. The result of this field study is consistent with the past works The Mesozoic coal of Khorat Group at Phakdi Chumphol. Chai Ya Phum and Phu Phan range. Kanlasin is transported coal which found associated in conglomerate and sandstone, these coals seem to be noncommercial. The next study plan is to find the new coal resource in Northeast region by using subsurface data from Petroleum exploration have been conducted around these areas. The study will focus on Carboniferous rock, Permian rock and isolated basin of late Triassic rock in more detail. This study. however. is still under study phrase and data preparation.

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