Late Paleozoic tectonics of the Solonker Zone in the Wuliji area, Inner Mongolia, China: Insights from stratigraphic sequence, chronology, and sandstone geochemistry
Late Paleozoic tectonics of the Solonker Zone in the Wuliji area, Inner Mongolia, China: Insights from stratigraphic sequence, chronology, and sandstone geochemistry
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内蒙古乌里吉地区索伦克带的晚古生代构造：地层序列、年代学和砂岩地球化学的见解
DOI：
10.1016/j.jseaes.2016.06.022
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发表时间：
2016-09
影响因子：
3
通讯作者：
Tang Jianrong
中科院分区：
文献类型：
--
作者：
Shi Guanzhong;Song Guangzeng;Wang Hua;Huang Chuanyan;Zhang Lidong;Tang Jianrong
五里集地区（包括Enger Us和Quagan quulu地区）的地质情况对认识具有重要意义。索隆克带晚古生代构造。Enger Us地区的超镁质/镁质岩石；以前被解释为蛇绿岩缝合线，实际上是二叠纪浊积岩中的熔岩流和断层。层序和含蛇纹岩的断裂角砾岩小体。俯冲带的特征，如。没有增生杂岩、岩浆弧火山或LP/HP变质作用。早二叠纪。N-MORB基性岩和晚二叠世放射虫质燧石伴浊积岩和凝灰岩。指示深水设置。夸干-库鲁地区有晚石炭世-二叠世的露头。阿斯山组由火山-沉积岩和古土状礁灰岩组成。晚二叠世火山-沉积单元。晚二叠世火山-沉积单元中的英安岩熔岩。锆石U-Pb年龄为254 Ma。夸干-库鲁地区辉长岩侵入于该区。阿斯山组及引起的接触变质作用。砂岩在上部。奥斯山组段含火山碎屑碎屑和火山矿物碎屑。结晶基岩（如黑云母、白云母和石榴石）。火山碎屑的地球化学分析。砂岩与大陆岛弧和活动大陆边缘均有岩浆亲缘关系。（ACM）构造环境。通过岩石地层分析，提出了晚二叠世早期裂谷背景。五里集地区层序及相关岩浆活动。火山-沉积岩。五里集地区经历了近北-南的缩短，可能与近早中生代有关。五里集附近其他地区南北向压缩发育
The geology in the Wuliji area (including the Enger Us and Quagan Qulu areas) is important for understanding.the Late Paleozoic tectonics of the Solonker Zone. Ultramafic/mafic rocks in the Enger Us area,.previously interpreted as an ophiolitic suture, are actually lava flows and sills in a Permian turbiditic.sequence and a small body of fault breccia containing serpentinite. Subduction zone features, such as.accretionary complexes, magmatic arc volcanics or LP/HP metamorphism are absent. Early Permian.N-MORB mafic rocks and Late Permian radiolarian cherts accompanied by turbidites and tuffeous rocks.indicate a deep water setting. In the Quagan Qulu area, outcrops of the Late Carboniferous to Permian.Amushan Formation are composed of volcano-sedimenary rocks and guyot-like reef limestone along with.a Late Permian volcano-sedimentary unit. A dacite lava in the Late Permian volcano-sedimentary unit.yields a zircon U-Pb age of 254 Ma. The gabbros in the Quagan Qulu area are intruded into the.Amushan Formation and caused contact metamorphism of country rocks. Sandstones in the Upper.Member of the Amushan Formation contain detrital clasts of volcanic fragments and mineral clasts of.crystalline basement rocks (i.e. biotite, muscovite and garnet). Geochemical analysis of volcaniclastic.sandstones shows a magmatic affinity to both continental island arc (CIA) and active continental margin.(ACM) tectonic settings. A Late Permian incipient rift setting is suggested by analyzing the lithostratigraphic.sequence and related magmatism in the Wuliji area. The volcano-sedimentary rocks in the.Wuliji area experienced a nearly N-S shortening that was probably related to the Early Mesozoic nearly.N-S compression well developed in other areas close to the Wuliji area
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影响因子：
1.5
作者：
N. Purevjav;B. Roser
通讯作者：
N. Purevjav;B. Roser
影响因子：
--
作者：
Xu Dong-zhu
通讯作者：
Xu Dong-zhu
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影响因子：
3.5
作者：
Dongfang Song;Wenjiao Xiao;Brian F. Windley;Chunming Han;Zhonghua Tian
通讯作者：
Zhonghua Tian
影响因子：
3
作者：
Zeng-Zhen Wang;Bao-Fu Han;L. Feng;Bo Liu
通讯作者：
Zeng-Zhen Wang;Bao-Fu Han;L. Feng;Bo Liu
影响因子：
2.1
作者：
R. Roban;M. Melinte-Dobrinescu
通讯作者：
R. Roban;M. Melinte-Dobrinescu