摘要
华南板块的构造格局与太平洋板块和印度板块的共同作用相关。华南板块中 ,由于绍兴—鹰潭—藤县—北海断裂带内中元古代蛇绿混杂岩的确认并恢复为消减的大洋 ,其两侧古老的扬子地块和华夏地块及其演化历史的追溯也日见清晰。它们是在两个克拉通地块基础上发展起来的。 1998年在浙江省龙游首次发现的原生金刚石 ,产于这条深断裂旁侧白垩纪盆地中的似金伯利岩岩管内 ,含矿岩管生成深度大 ,构造部位有利 ;金刚石呈八面体外形、纯度高 ;类似的岩管有 10 0多个 ,但研究程度较低 ,因而具有良好的找矿前景。
Asian Continent is one of the best area on studying continental dynamic analysis. The structural framework of the South China plate is related with integrated affection of the Pacific plate and India plate. Ophiolite complex in South China plate is discovered in mid Proterozoic group along Shaoxin Yintan Tenxian Beihai faults,which shows that this area was subduction zone in that time and the paleo Yangtze block and Cathaysia block was developped on the two Cratons. The original diamond is found in kimberlite pipe of Cretaceous system basin beside of the fault. The pipe was formed in significant structure site and depth. The diamond is of octahedron in form and high purity, which shows that this area is good for exploration of diamond resources.
出处
《火山地质与矿产》
2000年第1期18-22,共5页
Volcanology & Mineral Resources
