对丹巴地区广泛分布的志留系、泥盆系和三叠系地层进行了较系统的Ｓｍ－Ｎｄ同位素研究。这些变质沉积岩的地壳存留年龄为２２８４－１９７７Ｍａ，它介于扬子板块核部......

Banded Iron Formations (BIFs) were formed by contemporaneous events of active sediments supply and the venting of a hydr......

In Nagpur, M.P.-Maharashtra Manganese Belt is exposed which is part of Sausar Belt. In Nagpur, four manganese mines viz ......