Gondwana to Asia： Fourth International Symposium

The international symposium as titled above was held in Fukuoka, Japan from 8 to 10 November 2007. It was supported by seven organizations such as Kyushu University, the Japan Society for the Promotion of Science, IGCP 512, etc. The same symposium was held by the International Association for Gondwana Research in collaboration with Gondwana-related scientific projects in Chouchong, South Korea （2004）, Beijing （2005）, and Hong Kong （2006）.     

Gondwana and Cathaysian blocks,palaeotethys sutures and cenozoic tectonics in South-east Asia

The Triassic Indosinian Orogeny followed extinction of the Palaeotethys Ocean resulting in suturing of Gondwana affinity and Cathaysian blocks.The Gondwana affinity Sinoburmalaya block of Peninsular Malaysia, characterized by Carboniferous—Permian mudstones containing glacial dropstones and sparse fauna and flora, is traced extensively into Sumatra. This mudstone facies is flanked on the east by a sandstone-dominated facies and by carbonate localized in the Kinta Valley. The muddy and sandy facies both begin with a basal Carboniferous condensed red bed sequence, which unconformably overlies the older formations of Sinoburmalaya. Both facies also demonstrate a Late Permian conformable transition into overlying limestone. The Cathaysian block of East Malaya is characterized by Late Permian Gigantopteris flora and fusulinid limestones associated with andesitic volcanism. It is similar but not identical to the West Sumatra Carboniferous—Permian block, characterized by Early Permian volcanism, fusulinid limestones and early Cathaysian Jambi flora.The South to SSE trending central Peninsular Malaysian Triassic orogenic belt swings south-east from Singapore to Bangka, then east to Billiton. The Palaeotethys suture (Bentong—Raub Line) forms the western margin of this belt and is therefore unlikely to continue south along the Palaeogene Bengkalis Graben, which transects the north-west—south-east orogenic fabric of Sumatra.The oroclinal bending of the Indosinian Orogen, from a north-west—south-east grain in Sumatra to a northerly grain through Peninsular Malaysia, is attributed to the Palaeocene collision of India and its subsequent indentation into Eurasia. The bending was accomplished by clockwise rotation and right-lateral shear parallel to the orogenic grain. The Mesozoic Palaeotethyan sutures were transformed into Palaeocene and younger shear zones. The outer zones of the orocline experienced pull apart tectonics (Andaman Sea and Sumatra basins) while the inner part (East Malaya to Billiton), being compressional, lacks Cenozoic basins.     

全国地层委员会各断代专业组工作会议第四纪组讨论会简介

裴荣富,男,1924年8月出生于秦皇岛市,1948年毕业于清华大学地学系,曾任中国地质科学院矿床地质研究所所长和国际矿床成因学会(1ＡＧＯＤ)主席。几十年来,裴荣富先生致力于矿床地质学的研究,先后在矿产勘查工程、矿床成因学等研究领域主持完成了一系列国内、国际重大项目,取得了一批重要成果。在理论上建树颇丰。先后提出了“双控论”、“合理域”等固体矿床勘查理论、“金属成矿省的景、场、相、床等级体制成矿”、超大型矿床“成矿偏在性”和“异常成矿构造聚敛场控矿模式”、“四维(3Ｄｔ)成矿作用与金属成矿省的演化”、成矿“时间维造就…