Bouma sequences and other sedimentary structures formed by sedimentary gravity flow, such as slumpfolded layers and flute casts, are really well developed in upper parts of the Carboniferous in the Yeyungou area of South Tianshan in China. Based on analyses of sections and lithofacies of the upper parts of Carboniferous, accompanied bC-M diagram from the statistics of sand grains in the turbidites, the authors point out that the upper parts of the Carboniferous in the Yeyungou area of South Tianshan in China were formed in submarine fan. Lithofacies such as disorganized gravels (A-1), massive sandstones without dish structures (B-2), proximal turbidites (C), distal turbidites (D), slumpfolded layers (F), and shales interval siliceous rocks (G) have been recognized in the strata, which are associated with construction of inner fan, mid fan and outer fan according to Walker models of submarine fan. It is verified that there is a sedimentary environment for deep marine fan in the Carboniferous in the Yeyungou area of South Tianshan in China. Paleo current orientation shows that the sediments came from the south side, paleo continent of Tarim. The data of chemical composition of sediments indicate that the tectonic background of the turbidites is passive continental margin environment.
About author: Wang Jiasheng was born in 1963, and obtained Master degree from China University of Geosciences (Wuhan) in 1992. Now he is an associate professor of Faculty of Earth Sciences in this university, and engages in the research of sedimentology, tectonics and integrated stratigraphy in orogenic belts, as well as the lecturing of physical geology courses
Cite this article:
. DISCOVERY OF SUBMARINE FAN IN THE CARBONIFEROUS IN THE YEYUNGOU AREA OF SOUTH TIANSHAN[J]. JOURNAL OF PALAEOGEOGRAPHY, 1999, 1(3): 73-82.
. DISCOVERY OF SUBMARINE FAN IN THE CARBONIFEROUS IN THE YEYUNGOU AREA OF SOUTH TIANSHAN[J]. JOPC, 1999, 1(3): 73-82.
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