碳酸盐岩类岩石薄片的最佳定厚标准探讨:《华南地质与矿产》2013年01期

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LC.tgh0碳酸盐岩类岩石薄片的最佳定厚标准探讨

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【摘要】:传统的薄片磨制方法,会对碳酸盐岩粒屑结构中包含的生物碎屑和包粒等造成判断及鉴定的不良影响。本文通过反复实验,确定碳酸盐岩类岩石定厚标准在0.033~0.045 mm之间,可以清晰显现生物碎屑、粒屑的显微结构,对其成因及命名的准确性具有重要意义,同时结合矿物干涉色对厚度的要求等因素,综合出较实用的碳酸盐岩薄片厚度控制体系。水利论文 xM6PQ6fl

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【作者单位】:水利论文8B'P&Y'k8}.j#`:Q*P6gS

8y/@7Ol~#Ou0中国地质调查局武汉地质调查中心;

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碳酸盐岩 生物碎屑 粒屑 干涉色 薄片厚度

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4Wj8BK,N.B+C5[ WW0【基金】:中国地质调查局地质矿产调查评价专项(编号:1212011120148)水利论文.O@ G"oR;u

t[ G*d*nQ$m!Rl8}0【分类号】:P578.6水利论文9Orx\0i

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【正文快照】:

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0]t8Pb nH$H0在岩石矿物学分类中,碳酸盐岩与其它类别岩石截然不同。因其属于内源沉积,往往含有丰富的生物碎屑、包粒等结构物(本文中出现的生物碎屑、包粒等结构物均是指最大直径2 mm以下的结构物)。它们的存在、种类及含量直接影响着岩矿鉴定的准确性,如岩石成因和命名等。不仅如此,生水利论文{8{Tc8h9F \

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