1.A lot of radiolarian cherty is found in the T3-J1 strata in Eastern Heilongjiang Province during recent geological survey, although previous exploration was not targeted at these strata for oi.
在勘探工作中发现黑龙江东部晚三叠世—早侏罗世存在大量的放射虫硅质岩地层。
2.A lot of radiolarian cherty is found in the T3-J1 strata in Eastern Heilongjiang Province during recent geological survey, although previous exploration was not targeted at these strata for oi.
在勘探工作中发现黑龙江东部晚三叠世—早侏罗世存在大量的放射虫硅质岩地层。