研究区位于西伯利亚地台东北部,地盾的太古代结晶岩石和沉积盖层的会合处,该盖层是由里菲期陆源-碳酸盐岩、寒武纪灰岩和白云岩以及上古生代-中生代陆源地层组成的。三迭—下侏罗纪的金伯利岩岩体限于安钠巴尔地块的东部和东南部边缘。 目前,关于该区现代冲积矿床中金刚石的来源还没有一致的意见。按照流行的观 The study area is located at the junction of the Archean crystalline rock and sedimentary caprock of the Siberian Platform in the northeastern part of Siberia. The caprock is composed of the rifyian terrigenous-carbonate rocks, Cambrian limestone and dolomite as well as the Upper Paleozoic - Mesozoic terrigenous composition. The Triassic-Lower-Jurassic kimberlite body was restricted to the eastern and southeastern margins of the Annabal plots. At present, there is no consensus on the origin of diamond in the modern alluvial deposit in this area. According to the popular view