【摘要】 辽西地区玛瑙矿发育在晚中生代断陷盆地内中基性火山岩建造中,主要产于白垩系义县组中基性火山岩气孔构造和断裂破碎带中,受围岩岩性控制明显.该地区找矿勘查的重要方向就是围绕义县期中基性火山岩且气孔和破碎带发育的地段.更多还原

【Abstract】 The agate deposits in Western Liaoning area, developed in the intermediate-basic volcanic formation in the Late Mesozoic fault basin, mainly occur in the pores and fissures of volcanic rocks, controlled by the lithology of wallrocks. According to comprehensive study, the key prospecting target is the Yixianian intermediate-basic volcanic rocks with pores and fissures.更多还原