摘要
Sr同位素 (而不是Sr浓度 )由斑岩体内部向围岩接触带呈有规律升高 ( 0 70 5→ 0 71 1 ) ,指示了德兴铜厂斑岩铜矿的成矿元素是从岩体内部随成矿流体迁移到接触带附近的 ,这符合斑岩铜矿的正岩浆成因模式。Nd同位素则相对稳定 。
The Sr isotopic composition (rather than the Sr content) gradually increases from the interior of the porphyry body to its contact zone (from 0.705 to 0.711), indicating that ore forming elements including copper itself were transported from the interior together with ore forming hydrotermal fluids to the contact zone and adjacent sites. This concept is in accordance with orthomagmatic genetic model of porphyry copper deposit. Nd isotopic composition is relatively stable during hydrothermal process and may serve as an indicator of magmatic origin of the altered intrusive body.
出处
《铀矿地质》
CAS
CSCD
2001年第3期156-161,共6页
Uranium Geology
基金
国家自然科学基金 (编号 :4 973 3 1 2 0 )
中国博士后基金资助项目
