再论易门-元江铜矿区绿汁江组狮山段的层位归属

A REVIEW OF THE STRATIGRAPHICHORIZON OF SHISHAN MEMBER OF LUZHUIANG FORMTION IN YIMEN--YUANJLANG CU ORE-FIELD

昆阳群绿汁江组狮山段是否存在，涉及昆阳群中除了因民—落雪组紫色层—含铜层之外，是否还存在另一套紫色层—含铜层的问题。笔者１９８７年曾以稀土元素地球化学特征的研究，得出解体并废弃狮山段的结论。现在，又以岩石地球化学的对比研究，再次论证昆阳群只有因民—落雪组一套含铜层，对扩大易门－元江西矿带的二轮找矿具有现实意义。

AbstractIs there a Shishan Member in Luzhijiang Formation of Kunyang Group? This problem is related to whether there is another purple bed--Cu bearing bed in Kunyang Group besides that of the Yinmin--Luoxue Formation. In 1987, according to the study of geochemical characteristics of REE, we put forward that the so-called Shishan Member must be abandoned and dismembered. In this paper, basing upon a study of lithological geochemical chracter correlation, we confirm that there is only one Yinmin--Luoxue Formation purple bed--Cu bearing bed in Kunyang Group. It has practical significance in the second turn ore-prospecting to expand the west ore deposit zone in Yimen--Yuanjiang.