Lamprophyres are widely spread over the Laowangzhai gold orefield in northern Mt. Ailao structure zone, Yunnan Province. Lamprophyres in the orefield are tempor
Study of forming mechanism of “chimney-effect” (CE) has important significance for basic theory and applications of non-seismic geophysical and geochemical me
In the MORBnormalized multi element variation diagram given by Pearce(1983) ,the depletions of Ba relativeto Rb and Th are differentfor differentrocks.Asin th
Based on geomorphological, tectonic and sedimentary data, a Kunlun Yellow River Tectonic Movement has been recognized in 1 10-0 60 Ma B.P. This tectonic movem
Characteristics of ore forming fluids as inferred from detailed studies of inclusions indicate that pegmatites may have different origins. For example, the gra