欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
八里坡钼矿是在金堆城钼矿床外围找矿中新发现的斑岩型钼矿床,对其含矿斑岩和矿石进行了成岩成矿年龄精测。采用LA-ICP-MS方法对八里坡斑岩体进行单颗粒锆石U-Pb测年,获得成岩年龄为155.9±2.3Ma;采用ICP-MS法测定八里坡钼矿中辉钼矿Re-Os同位素年龄,获得等时线年龄为156.3±2.2Ma;两种方法获得的年龄一致,表明成岩与成矿同时形成。八里坡斑岩体与东秦岭南泥湖、上房沟等斑岩体成岩年龄一致,早于金堆城钼矿床成矿年龄,表明八里坡斑岩体可能是新一期成岩成矿作用,形成于燕山运动的A幕,产出于东亚构造体制转变初期的地球动力学背景,具有重要成岩成矿意义。
英文摘要：
Located in the eastern Qinling molybdenum belt, the Balipo deposit is a porphyry Mo deposit discovered in recent years. This study provides the first highly precise dating for the mineralization and rock-forming of the Balipo molybdenum deposit. The LA-ICP-MS dating of zircon from the Balipo granitic porphyry yields an age of 155.9±2.3 Ma. The Re-Os model ages of the deposit are between 152.8±1.1- 157.8±2. 2 Ma, and Re-Os isochrone age is 156. 3 ± 2. 2 Ma. The fact that the zircon U-Pb and molybdenite Re-Os isotopic ages are quite similar suggests that the Balipo molybdenum deposit formed at least 10 Ma earlier than that the Jinduicheng, Nannibu, Shangfanggou and Leimengou porphyry molybdenum deposits distributed along the molybdenum belt. The Balipo porphyry rock formed at the same time as the Nannihu and Shangfanggou porphyry, implying that the Bailipo may result from a new round diagenesis and mineralization during Episode A of the Yanshan Movement. The results also suggest that the rock formed at the geodynamical setting of early-stage eastern Asian tectonic regime transformation and is of important significance to diagenesis and mineralization.
同期刊论文项目
同项目期刊论文
Genesis of Concealed Cu-rich Ore Body in the Jinchuan Deposit, Northwestern China, and Its Prospecti
Compositional variations of olivine, clinopyroxene, plagioclase and apatite in the Panzhihua Fe-Ti-V
A new genetic model for the giant Ni-Cu-PGE sulfide deposits associated with the Siberian flood basa
Precise U–Pb zircon–baddeleyite age of the Jinchuan sulfideore-bearing ultramafic intrusion, western
Sulfur contents at sulfide-liquid or anhydrite saturation in silicate melts: Empirical equations and
Abundant Fe–Ti oxide inclusions in olivine from the Panzhihua and Hongge layered intrusions, SW Chin
Controls on the Fo and Ni contents of olivine in sulfide-bearing mafic-ultramafic intrusions: Princi
Applications of stable and radiogenic isotopes to magmatic Cu-Ni-PGE deposits: Examples and cautions
Cr-spinel/melt and Cr-spinel/olivine nickel partition coefficients from basalts, picrites and intrus
Origin of the inconsistent apparent Re–Os ages of the Jinchuan Ni–Cu sulfide ore deposit, China : Po
Textural and stable isotope studies of hydrothermal alteration in the Main Sulfide Zone of the Great
位置：