１９９９年８月１４日至１６日在长春召开了“火山作用与资源、环境学术研讨会”。这是本世纪最后一次全国性岩石学专业会议，也是一次跨世纪的全国性大会，以往我国召开过火山岩和火山作用的全国性会议共５次，这次应是第六届大会。这次会议由中国地质学会岩石专业委员会等１ From August 14 to August 16, 1999, “Symposium on Volcano Action and Resources and Environment” was held in Changchun. This is the last national professional conference on petrology in this century. It is also a cross-century national conference. In the past, China held a total of five national conferences on the role of volcanics and volcanoes. This time it is the 6th General Assembly. The meeting by the China Geological Society of Rock Professional Committee 1