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Sediment-Hosted Mineral Deposits (IAS Special Publication by J. Parnell, Y. Lianjun, C. Changming

By J. Parnell, Y. Lianjun, C. Changming

This book comprises papers brought at a global Symposium of the overseas organization of Sedimentologists held at Beijing, Peoples' Republic of China in August, 1988. The subject of the symposium used to be sedimentology with regards to mineral deposits and integrated conferences of 3 foreign Geological Correlation Programmes (IGCP) tasks; IGCP 219 on Comparative Lacustrine Sedimentology in area and Time, IGCP 226 on Manganese Deposits, and IGCP 254 on Metalliferous Black Shales. This e-book is meant for earth scientists and complicated scholars studying/working within the parts of sedimentology, petroleum geology, ore geology and fiscal geology.

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3-26. Theophrastus Publications, Athens. A. R. (1987) Metallic minerals on the deep seabed. Geological Survey of Canada, Paper 86-21 and Map 1659A, 65pp. L. K. (1973) Precambrian iron formĀ­ ations of the World. Econ. Ceo/. 68, 913-1221. V. (1965) The Iron-Manganese Ores of the Karadzhal Deposit. Institute of the Geology of Ore Deposits, Petrography, Mineralogy and Geochemistry, USSR Academy of Sciences, Moscow, translation of Russian, 123pp. RoY, S. (1980) Manganese ore deposits of India. fn: Geology and Geochemistry of Manganese, Vol.

10). The total rise over this time interval was about 50-100 m. SuperĀ­ imposed on this trend of rising sea level are several shorter regressive episodes. Hallam (1989)identi fied a regression at the end of the Callovian and two in the Oxfordian, with a pronounced transgressive event in the middle Oxfordian. The Vail et al. (1984) curve only identifies a late Callovian unconformity, followed by a smooth rise of sea level into the late Kimmeridgian (see Hallam & Maynard, 1987, for a further discussion of the differences in these two sea-level curves for the mid to late Jurassic).

X U, H . H UA N G and B. L I U Chengdu Institute of Geology and Mineral Resources, Renmin bei lu, Chengdu, Sichuan, China ABSTRACT The early Sinian (late Proterozoic) black manganese carbonate deposits of the Datangpo Formation are distributed in eastern Guizhou and western Hunan provinces. The formation comprises a belt extending for over 600 km along depositional strike and 150 km perpendicular to strike. The manganese deposits are located in a rift belt on the margin of the Yangtze Craton. The Datangpo Formation is interbedded between two sequences that have been interpreted as glacial diamictites.

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