The result provides a foundation of exact time for the high precision stratigraphic subdivision and coal-forming period in Eastern Heilongjiang Province.
这一研究成果为黑龙江省东部早白垩世高精度地层划分对比及成煤期次的确定提供了精确的年代依据。
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。
Result showed that the mixed pattern can increase the economic benefit and significantly improve land utilization, which can be popularized in the eastern mountain areas of Heilongjiang Province.
结果表明：这一混交模式可以大大提高经济效益，使林地利用率得到显著提高，是值得在黑龙江东部山区推广的混交模式。
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