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对中国第5次北极科学考察采自楚科奇海陆坡的ARC5-M06柱样进行粒度、冰筏碎屑、碎屑矿物、黏土矿物、岩心XRF扫描、沉积物颜色分析,初步建立了楚科奇海陆坡晚更新世MIS3期以来的沉积地层框架。ARC5-M06柱黏土矿物组合类型为伊利石(66%)-绿泥石(22%)-高岭石(9%)-蒙皂石(3%)组合,与北冰洋边缘海表层沉积物黏土矿物组合类型对比表明,MIS3期以来楚科奇海陆坡除MIS3期晚期黏土矿物陆源主要来自北美大陆的加拿大马更些河入海物质及少量太平洋水团携入的北美育空河入海物质外,其他时期均主要来自于东西伯利亚海的输入;自MIS2末次盛冰期以来,陆坡与海盆的黏土矿物源区发生了改变,陆坡主要来自于东西伯利亚海的输入,海盆主要来自于北美大陆物源输入,受波弗特海的输入影响较大。
The particle size, raft debris, detrital minerals, clay minerals, core XRF scanning and sediment color analysis of the ARC5-M06 sample collected from China’s 5th Arctic Scientific Expedition from the Chukchi Sea and Slopes were initially established. Sedimentary stratigraphic framework since the late Pleistocene MIS3 in the odd sea slope. The combination of ARC5-M06 clay minerals is illite (66%) - chlorite (22%) - kaolinite (9%) - smectite (3%) and is associated with the Arctic Ocean margin sediment clay minerals The comparison of the types of assemblages shows that, since the MIS3 period, the Chukchi Sea continental slope except for the late MIS3 terrestrial clay mineral source mainly comes from the Canadian Maagong River in the North American continent, and the North American Yukon into the sea with a small amount of Pacific water mass. Mainly from the East Siberian Sea. Since the last glaciation of MIS2, the clay mineral source areas of the slope and sea basin have been changed. The continental slope mainly comes from the East Siberian Sea. The sea basins mainly come from the North American continent. Beaufort Sea input more affected.