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辽东本溪连山关花岗杂岩岩体的精细年代学和地球化学的研究匮乏,区域上辽东地区新太古代岩浆活动较少,研究也相对较弱.辽东本溪连山关地区处于铀矿集中区,是内生铀矿床的有利成矿地区.区内铀矿主要赋存于连山关花岗杂岩体与辽河群浪子山组或鞍山群的接触带附近,表明了岩体与铀矿化关系密切.连山关地区浅肉红色正长花岗岩SHRIMP U-Pb年龄为2 512±14Ma,灰白色条痕状二长花岗岩SHRIMP U-Pb年龄为2 510±15Ma,花岗杂岩侵位时代为新太古代.正长花岗岩SiO_2含量为69.28%~72.70%,K_2O含量为6.24%~7.12%,Na_2O含量为2.77%~3.09%,Al_2O_3含量为13.68%~15.92%;二长花岗岩SiO_2含量为65.53%~71.01%,K_2O含量为2.95%~3.90%,Na_2O含量为3.57%~4.23%,Al_2O_3含量为14.13%~14.90%;连山关花岗杂岩含白云母,A/CNK为1.09~1.16(平均1.12),刚玉(C)为1.37~2.28,P_2O_5和SiO_2无负相关关系,表现为高钾的S型花岗岩.稀土总量较高,轻重稀土元素之间强烈分馏,从正铕异常到负铕异常(δEu=3.55~0.36),亏损Nb、Ta、P、Ti等高场强元素,富集Rb、Th、K等大离子亲石元素.锆石ε_(Hf)(t)值为-15.19~-0.47,对应的单阶段Hf模式年龄TDM为2 826~3 400Ma,两阶段Hf模式年龄T_(DM)~C为2 931~3 650Ma.辽东连山关花岗杂岩可能是在高温中压条件下由中太古代和古太古代地壳物质(以变质泥岩和杂砂岩为主)发生深熔作用形成的,可能发生在后碰撞环境,指示华北克拉通各微陆块拼贴完成.
There is a lack of fine geochronology and geochemical study of the Lianshanuan granite complex in Benxi, Liaodong, with little Neocene magmatic activity and relatively weak research on the Liaodongguan area. Area is a favorable metallogenic area for endogenous uranium deposits.The uranium deposits in the area mainly occur near the contact zone between the Lianshan Guanghuang complex and the Liaohe Group, or the Anshan Group, indicating that the rock mass and uranium deposit The SHRIMP U-Pb age of shallow feldspathic granite is about 2112 ± 14Ma in Lianshanuan area, and the SHRIMP U-Pb age of greyish-white feldspar monzonitic granite is 2510 ± 15Ma. The granitic complex emplacement age Neo-Archean. The content of SiO_2 in Changzheng granite is 69.28% -72.70%, K 2 O is 6.24% -7.12%, Na 2 O is 2.77% -3.09%, Al 2 O 3 is 13.68% -15.92% 65.53% -71.01%, K_2O content was 2.95% -3.90%, Na 2 O content was 3.57% -4.23%, and Al 2 O 3 content was 14.13% -14.90%. The Lianshan Guanghuang complex contains muscovites with A / CNK of 1.09 ~ 1.16 (an average of 1.12), corundum (C) of 1.37-2.82, P 2 O 5 and SiO 2 showed no negative correlation, showing high-K S-type granite.The total amount of rare earth, light and heavy The intense fractionation between rare earth elements, from normal Eu to negative Eu anomaly (δEu = 3.55 ~ 0.36), depletes the high field strength elements such as Nb, Ta, P and Ti and enriches the large ion lithophile elements such as Rb, Th and K . The values of ε_ (Hf) (t) for zircons ranged from -15.19 to -0.47, corresponding to a single-stage Hf model age of 2226 to 3400 Ma, and the two-stage Hf model ages from T DM to C ranged from 2931 to 3550 Ma The Lianshan Guanghuang complex in Liaodong area may be formed by the deep melting of the Meso - Archean and Palearly Archean crustal materials (mainly metamorphic mudstone and miscellaneous sandstone) under high temperature and medium pressure, which may occur in the post - impact environment , North China Craton instructions micro-land collage completed.