000			02813nam a22001817a 4500
008			160218t2009 my 000 0 eng
020			_a978-983-44396-1-3 _cBPT
082			_a555.9 KHO
100			_bKhoo Han Peng
245			_aGeology and mineral resources of the Sungai Tekai Area, Pahang Darul Makmur
250			_aMap Report 18
260			_aKuala Lumpur, _bMinerals and Geoscience Department Malaysia, Ministry of Natural Resources and Environment, _c2009
300			_aill. 106 p.- 29.6 cm.- _eAccompanying material: Geological map (Sungai Tekai.- New Series L 7010 Sheet 70 Scale 1 : 63,360)
500			_aPrice: RM 60.00 Abstract. The Sg. Tekai area is underlain predominantly by a group of continental sediments. Only Bangak metasediments and Lempah Granite occur to the northeast. These continental sediments previously included in the Tembeling formation by B.N. Koopmans in 1968, are now shown to be mappable as four lithostratigraphic units named as the Kerum Formation, Lanis Conglomerate, Mangking Sandstone and Termus Shale. These constitute the Tembeling Group. The order of succession of these new units is worked out largely from defined. These sections, however, do not show the finer details due to the scarcity of outsrops or their continuity in this type of terrain and climate. Plants fossils Gleichenoides gagauensis Kon'no and bivalves Trigonoides, T. Kodairai Kobayashi & Suzuki, and Trigonoides kodairai paucisulcatus Suzuki belonging to the Unionacea a Jurassic-Late Cretaceous age. These discoveriesshed new light on the age range (i.e. the upper limit) of the sediments which were previously commonly accepted to be no younger than Jurassic. Field structural data confirm much of the major structures interpreted from the aerial photographs and Landsat imagery. Following Koopman's idea in 1968, structures have been widely used as the criteria in differentiating Gagau group sediments from 'Tembeling' type rocks for many years. This role of structures is cautioned and its significance explained in the light of new ideas on the structural aspect. An illustration is presented by the Sg. Pelandok area where a patch of very gently dipping rocks, geomorphologically resembling Gagau type sediments, are found to be, in fact of the Mangking Sandstone positioned at the trough of the Pelandok Syncline. The near horizontal or very gentle dip of the beds is due to this position within the fold and not necessarily an indication of another group of rocks. Fresh water invertebrate fossils, the abundance of red beds throughout the sequence and sedimentary structures are all suggestive of a continental palaeoenvironment.
942			_2ddc _h555.9 KHO
648			_xGeology _yPahang _zSungai Tekai
650			_xMineral Resources _yPahang _zSungai Tekai
999			_c1 _d1