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近年来,为提高深部磷矿的地质勘探效果和加快勘探速度,我们在国内不同勘探区的46个钻孔中进行了综合测井工作。本文仅就这些地区的测井效果及应用问题谈点浅见.以期与广大测井工作者和地质工作者共同研讨。一、建立以自然伽玛法为主的磷矿测井系列我国磷矿床主要分为沉积、岩浆、变质、风化淋滤、生物堆积等五大类型,其中以沉积型磷块岩为主(占已探明储量的69.90%),变质岩型磷灰石次之(占23%)。磷块岩主要成矿时代为震旦纪、寒武纪、泥盆纪。磷块岩中有钛、铀、钒、锰、铁、锌、铅、氟、碘、铝、
In recent years, in order to improve the geological exploration results of deep phosphate rock and speed up the exploration, we conducted comprehensive logging in 46 boreholes in different exploration areas in China. In this paper, we only talked about the logging effects and application problems in these areas, with a view to discussing with the majority of logging workers and geologists. First, the establishment of natural gamma ray-based phosphorite logging series China’s phosphate deposits are mainly divided into sedimentary, magmatic, metamorphic, weathered leaching, biological accumulation of five major types, of which sedimentary-type phosphorite (dominated 69.90% of proven reserves) followed by metamorphic rock apatite (23%). Phosphorite main mineralization age Sinian, Cambrian, Devonian. Phosphorite in the titanium, uranium, vanadium, manganese, iron, zinc, lead, fluorine, iodine, aluminum,