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A limestone which has been uncovered during the extension of an oil palm plantation appears to be an important deposit. It is rich in relatively well preserved fossils although it out crops only 500 meters from a granite. The fossils are diverse and consist of common Tubiphytes, a few algae, calcispherids, smaller foraminifers, abundant fusulinaceans (including Levenella, Pamirina, Brevaxina, Chalaroschwagerina, Leeina, Toriyamaia, Laosella ), calcareous sponges, a few bryozoans, brachiopods, bivalves, rare gastropods, ostracods and crinoids. They indicate a Late Cisuralian age (YahtashianBolorian) and appear to belong to three biozones. The rocks of the area were previously considered to be Early Carboniferous in age . The limestone is commonly a packstone or a wackestone, very rarely a grainstone. Depositional environment was shallow marine. Dolomite is almost absent according to the study of thin sections and the results of chemical analyses. In Terengganu State, north of Seri Bandi in the area of Sungai Patang (a small tributary of Sungai Tebak) about 86 km far from Kuantan and 119 km far from Kuala Terengganu, the extension of Ladang Ketengah Jaya (Ladang = Plantation) has led to the digging of trenches to drain the water away from a swampy area. As a result, a number of small limestone exposures have been unearthed at the bottom of the main and the feeder ditches , 1 to 3 meters below ground surface. These exposures are scattered in a surface of, at least, two hectares (Sheet 62 or Kerteh Sheet of the topographical map on the scale 1:63,360. Geographic coordinates of two samples from the newly uncovered exposures: 4°24'09"N, 103°16'46"E for sample 359; 4°24'21"N, 103°16'45"E for sample 350). This newly uncovered limestone h as been noticed by members of the Geological Survey of Malaysia, especially at the beginning by Tuan Hj. Mohd. Ros bin Abdul Manafand Mr. Siew MengFai who collected samples and prepared thin sections of the limestone. THE GEOLOGICAL SETTING Granites occupy very large areas ofTerengganu State. Because of their presence, metamorphism is widespread in the adjacent sedimentary rocks. This fact has suggested that fossils are absent from a large part of Terengganu. As early as 1920, Lower Carboniferous rocks were evidenced in the Kuantan area of Pahang State just south of Terengganu State (Sheet Air Puteh or Sheet 72 of the topographical map on the scale 1:63,360); since then, they have provided fossils in abundance and the Carboniferous age (Visean to Early Bashkirian) has strongly been documented by different studies (Fontaine and Khoo, 1988). Other localities in the southern part of Terengganu State yielded also some Carboniferous fossils, especially in the Rulu Paka Sheet or Sheet 61 (Chand, 1978) and in the Chukai area of Sheet 73 (Suntharalingam, 1975; Ohana et al. , 1991). Sheets 61, 72 and 73 are adjacent to the sheet concerned by this paper. Recently, a limestone lens at Sungai Simpang in southernmost Terengganu has yielded Late Visean-Serpukhovian foraminifers (Fontaine and Vachard, 1988). These discoveries favoured the idea that Carboniferous sediments should be extensive in Terengganu State, especially in the southern part of this state. The area where the limestone has been found is flat , without outcrops of rocks at ground surface; it has been mapped geologically as a small Quaternary 454 HENRI FONTAINE, IBRAHIM BIN AMNAN AND DANIEL VACHARD

Important discovery of late Early Permian limestone in southern Terengganu, Peninsular Malaysia