CAJ | 학술논문

从岩石地层、生物地层、年代地层等方面对粤北韶关一连平地区进行了多重地层划分对比研究，重点研究了沉积地层的古地理环境，确定出晚古生代两个同期异相的沉积堆积区，并从“兴梅混合岩田”中解体出早中元古代桃溪岩组。通过锆石U-Pb定年，重新厘定志留纪不同侵入期次的花岗岩。对分布于粤赣边界细坳片麻状二长花岗岩体进行锆石岩相学与年代学研究，获取的锆石SHRIMPU—Pb年龄为742．3±9．3M，反映研究区内存在晚元古代过铝质花岗岩浆的侵入事件。研究认为四会一吴川断裂带自四会．清新一带进入研究区，与英德．始兴断裂组相接，并形成宽大的硅化岩带。将大东山．贵东复式岩体解体为17个时代岩性单位，认为不同侵入期次的侵入岩中以中侏罗世．早白垩世黑云母二长花岗岩W、Sn含量为最高，是作为钨锡及多金属的主要含矿载体。
종암석지층、생물지층、년대지층등방면대월북소관일련평지구진행료다중지층화분대비연구，중점연구료침적지층적고지리배경，학정출만고생대량개동기이상적침적퇴적구，병종“흥매혼합암전”중해체출조중원고대도계암조。통과고석U-Pb정년，중신전정지류기불동침입기차적화강암。대분포우월공변계세요편마상이장화강암체진행고석암상학여년대학연구，획취적고석SHRIMPU—Pb년령위742．3±9．3M，반영연구구내존재만원고대과려질화강암장적침입사건。연구인위사회일오천단렬대자사회．청신일대진입연구구，여영덕．시흥단렬조상접，병형성관대적규화암대。장대동산．귀동복식암체해체위17개시대암성단위，인위불동침입기차적침입암중이중주라세．조백성세흑운모이장화강암W、Sn함량위최고，시작위오석급다금속적주요함광재체。
Multiple stratigraphic division and correlation sequence has been improved in the Shaoguan-Lianping area of northern Guangdong through lithostratigraphic, biostratigraphic and chronostratigraphic research. Focus on the ancient geographical environment of the sedimentary strata, two contemporane- ous difference facies sedimentary accumulation of Neopaleozoic are identified. Mesoproterozoic Taoxi Forma- tion is decomposed from ＂Xingmei migmatite＂ the chronology of Silurian granites is revealed by zircon U-Pb age dating. Xi＇ao gneissic monzonite granite which is occurrence at boundary of Guangdong and Jiangxi province, is yielded zircon SHRIMP U-Pb age of 742.3 ± 9.3 Ma, which indicated the invasion event of Al-su- persaturated type granite in Neoproterozonic is existed. The investigation find that Sihui-Wuchuan fault zone enter Meizhou area starting from Sihui-Qixiag area, and connected to Yingde-Shixing fracture group, and composing of widely silicified rock belt. Dadongshan-Guidong composite body is subdivided into 17 lithological units, among which middle Jurassic-early Cretaceous biotite monzonite contains the highest W-Sn contents, which maybe the source for W-Sn polymetallic deposits.