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卡尔斯伯格脊位于西北印度洋2°S~10°N之间,属于慢速扩张洋中脊,广泛受沉积物覆盖。沉积物的矿物学和地球化学组成可以作为反映海底热液活动的存在、强度及其位置的一种有效方法。2012年以来,我国经过4个航次的热液硫化物调查,在卡尔斯伯格脊先后发现了4处热液活动区(卧蚕1、卧蚕2、天休和大糦热液区),并取得了多站位多类型的沉积物样品。本文对所获的样品进行了矿物成分和主量、微量及稀土元素分析,了解研究区沉积物类型、物质组成和地球化学特征,以期为我国在
The Karlsberg ridge, located between 2 ° S and 10 ° N in the Northwest Indian Ocean, is a slowly expanding mid-ocean ridge that is widely covered by sediments. The mineralogical and geochemical composition of the sediments can be used as an effective method to reflect the existence, intensity and location of seabed hydrothermal activities. Since 2012, our country has discovered four hydrothermal activity areas (one larvae of silkworm, two lakes of silkworm, day off and hot water of Okuma) through Karhursberger ridge after hydrothermal sulfide survey of 4 voyages, And made a multi-station multi-type sediment samples. In this paper, we analyzed the mineral composition, main amount, trace amount and rare earth element of the obtained samples to understand the sediment type, material composition and geochemical characteristics in the study area,