Precambrian Hongqiyingzi Complex at the northern margin of the North China Craton: Its zircon U-Pb-Hf systematics, geochemistry and constraints on crustal evolution
Precambrian Hongqiyingzi Complex at the northern margin of the North China Craton: Its zircon U-Pb-Hf systematics, geochemistry and constraints on crustal evolution
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华北克拉通北缘前寒武纪红旗营子杂岩体锆石U-Pb-Hf体系、地球化学及其对地壳演化的制约
DOI：
10.1016/j.precamres.2018.05.019
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发表时间：
2019-06
影响因子：
3.8
通讯作者：
Hu Yalu
中科院分区：
文献类型：
--
作者：
Liu Shuwen;Fu Jinghao;Lu Yong Jun;Chen Xu;Wang Maojiang;Hu Fangyang;Gao Lei;Sun Guozheng;Hu Yalu
位于中国克拉通北缘中段的前寒武纪红旗营子杂岩是研究北缘早期演化历史的重要岩浆侵入杂岩。冀北从里至隆化一带的HQC主要由新太古代石英闪长-英云闪长-花岗闪长-花岗闪长(DTG)片麻岩和古元古代花岗闪长-二长花岗岩-正长花岗岩(GMS)侵入岩组成。SHRIMP和LA-ICPMS锆石测年结果表明，热液热解片麻岩形成于2546~2532 Ma，而大熔体侵入岩形成于1870~1819 Ma。La-MC-Icp-MS锆石Lu-Hf同位素分析表明，新太古代DTG岩浆主要来源于年轻地壳的部分熔融，而古元古代GMS岩浆主要来自变质玄武岩和新太古代至古元古代火山岩或相关沉积物质的部分熔融。新太古代DTG和古元古代GMS岩浆作用的岩石组合、年代学和地球化学资料、成岩作用和地球动力学背景表明，HQC最有可能发生在北元古代中国造山带的最北端。因此，前寒武纪HQC记录了与NCC北缘俯冲和碰撞有关的新太古代俯冲相关的弧岩浆作用和古元古代碰撞后的岩浆作用。这些前寒武纪地质单元受到晚古生代钙碱性岩浆作用的强烈叠加，这可能是中亚造山带(CAOB)与NCC向南俯冲和碰撞造成的。
The Precambrian Hongqiyingzi Complex (HQC) in the middle segment of the northern margin of the North China Craton (NCC) is a crucial magmatic intrusive complex offering insights into the early evolutionary history of the northern margin of the NCC. The HQC, exposed from Congli to Longhua towns in the northern Hebei Province, is mainly composed of Neoarchean quartz dioritic-tonalitic-granodioritic (DTG) gneisses and Paleoproterozoic granodiorite-monzogranite-syenogranite (GMS) intrusions. SHRIMP and LA-ICP-MS zircon dating results show that the DTG gneisses formed at 2546–2532 Ma, while the GMS intrusions were emplaced between 1870 and 1819 Ma. LA-MC-ICP-MS zircon Lu-Hf isotope analyses indicate that the Neoarchean DTG magmas were mainly derived from partial melting of juvenile crust, but the Paleoproterozoic GMS magmas originated from partial melting of the metamorphic basalts and greywackes from Neoarchean to Paleoproterozoic volcanic or related sedimentary materials.Lithological assemblages, chronological and geochemical data, petrogensis and geodynamic settings of the Neoarchean DTG and Paleoproterozoic GMS magmatism show that the HQC is most likely at the northernmost part of the Trans-North China orogen of the NCC. The Precambrian HQC thus recorded Neoarchean subduction-related arc magmatism and Paleoproterozoic post-collisional magmatism that were associated with subduction and collision at the northern margin of the NCC. These Precambrian geological units were intensively overprinted by Late Paleozoic calc-alkaline magmatism, which may be caused by southward subduction and collision of the Central Asian Orogenic Belt (CAOB) with the NCC.
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影响因子：
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作者：
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影响因子：
3.8
作者：
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通讯作者：
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影响因子：
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作者：
通讯作者：
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影响因子：
5.3
作者：
STEIGER, RH;JAGER, E
通讯作者：
JAGER, E
DOI：
--
发表时间：
2004
期刊：
--
影响因子：
--
作者：
Ni Zhiyao;Wang Ren-min;Tong Ying
通讯作者：
Ni Zhiyao;Wang Ren-min;Tong Ying