Geochronology and geochemistry of Early Cretaceous bimodal volcanic rocks from Erguna Massif, NE China: evidence for the back-arc extension of the Mongol-Okhotsk orogenic belt

被引:1
作者
Yang, Fei [1 ,2 ]
Chen, Gong-Zheng [3 ]
Wu, Guang [1 ]
Li, Ying-Lei [1 ,2 ]
Shao, Yong-Xu [4 ]
Li, Tie-Gang [1 ]
Song, Guang-Chao [5 ]
Han, Bing [4 ]
机构
[1] Chinese Acad Geol Sci, Inst Mineral Resources, MNR Key Lab Metallogeny & Mineral Assessment, Beijing 100037, Peoples R China
[2] Peking Univ, MOE Key Lab Orogen & Crust Evolut, Beijing 100871, Peoples R China
[3] Hebei GEO Univ, Coll Earth Sci, Shijiazhuang 050030, Hebei, Peoples R China
[4] Geol Survey Inst Inner Mongolia, Inner Mongolia Key Lab Magmat Mineralizat & Ore P, Hohhot 010020, Peoples R China
[5] Inner Mongolia Bur Geol & Mineral Resources, Inst Geol Explorat 3, Hohhot 010010, Peoples R China
基金
中国国家自然科学基金;
关键词
Mongol-Okhotsk orogenic belt; Early Cretaceous; Bimodal volcanic rocks; Back-arc extension; Erguna Massif; GREAT XINGAN RANGE; ZIRCON U-PB; PORPHYRY MO DEPOSIT; IGNEOUS ROCKS; SOUTHWARD SUBDUCTION; SOUTHERN MANZHOULI; MANITU FORMATION; NORTHEAST CHINA; INNER-MONGOLIA; CRUSTAL GROWTH;
D O I
10.1007/s00531-021-02106-9
中图分类号
P [天文学、地球科学];
学科分类号
07 ;
摘要
The Manzhouli-Xin Barag Right Banner area, located in the southwestern Erguna Massif, is characterized by the distribution of a large volume of Mesozoic volcanic rocks and many polymetallic deposits. However, the tectonic setting of this area during the Late Mesozoic remains controversial. In this study, zircon U-Pb ages range from 142.8 +/- 1.8 to 140.4 +/- 1.6 Ma for the alkali basalt from the Meiletu Formation and 140 +/- 0.9 Ma for alkaline rhyolites from the Baiyingaolao Formation, forming a bimodal volcanic rock assemblage. The initial Sr-87/Sr-86 ratios range from 0.705365 to 0.705674, and the epsilon(Nd)(t) values vary from + 0.55 to + 1.47. The alkaline rhyolites show epsilon(Hf)(t) values ranging from + 5.3 to + 8.6, corresponding to T-DM1 and T-DM2 ages in the range of 0.48-0.58 Ga and 0.64-0.86 Ga, respectively. Combined with the major and trace element compositions, the Meiletu alkali basalts are characterized by Nb enrichment (averaging 23.6 ppm) and were derived from partial melting of metasomatized subcontinental lithospheric mantle and underwent moderate fractional crystallization of minerals (e.g. olivine, clinopyroxene, apatite, and plagioclase). The alkaline rhyolites show A1-type granite affinity and originated from partial melting of the mafic lower crust accompanied by fractional crystallization. This suite of bimodal volcanic rocks was mainly dominated by the Mongol-Okhotsk tectonic regime, and the Erguna Massif was in a back-arc extensional setting triggered by slab rollback during the Early Cretaceous.
引用
收藏
页码:173 / 194
页数:22
相关论文
共 93 条
[1]   Cenozoic volcanism in the Middle East: petrogenesis of alkali basalts from northern Lebanon [J].
Abdel-Rahman, AFM ;
Nassar, PE .
GEOLOGICAL MAGAZINE, 2004, 141 (05) :545-563
[2]   Quaternary high-Nb basalts: existence of young oceanic crust under the Sanandaj-Sirjan Zone, NW Iran [J].
Azizi, Hossein ;
Asahara, Yoshihiro ;
Tsuboi, Motohiro .
INTERNATIONAL GEOLOGY REVIEW, 2014, 56 (02) :167-186
[3]   DEHYDRATION MELTING AND WATER-SATURATED MELTING OF BASALTIC AND ANDESITIC GREENSTONES AND AMPHIBOLITES AT 1, 3, AND 6.9KB [J].
BEARD, JS ;
LOFGREN, GE .
JOURNAL OF PETROLOGY, 1991, 32 (02) :365-401
[4]   THE DEEP LAYERS OF A PALEOZOIC ARC - GEOCHEMISTRY OF THE COPLEY-BALAKLALA SERIES, NORTHERN CALIFORNIA [J].
BROUXEL, M ;
LAPIERRE, H ;
MICHARD, A ;
ALBAREDE, F .
EARTH AND PLANETARY SCIENCE LETTERS, 1987, 85 (04) :386-400
[5]  
[曹艳华 Cao Yanhua], 2020, [地质通报, Geological Bulletin of China], V39, P353
[6]   The Mo deposits of Northeast China: A powerful indicator of tectonic settings and associated evolutionary trends [J].
Chen, Yan-Jing ;
Zhang, Cheng ;
Wang, Pin ;
Pirajno, Franco ;
Li, Nuo .
ORE GEOLOGY REVIEWS, 2017, 81 :602-640
[7]   Geochronology and geochemistry of the Wunugetushan porphyry Cu-Mo deposit in NE china, and their geological significance [J].
Chen, Zhiguang ;
Zhang, Lianchang ;
Wan, Bo ;
Wu, Huaying ;
Cleven, Nathan .
ORE GEOLOGY REVIEWS, 2011, 43 (01) :92-105
[8]   MESOZOIC AND CENOZOIC VOLCANIC-ROCKS FROM CENTRAL AND SOUTHERN TIBET - AR-39-AR-40 DATING, PETROLOGICAL CHARACTERISTICS AND GEODYNAMICAL SIGNIFICANCE [J].
COULON, C ;
MALUSKI, H ;
BOLLINGER, C ;
WANG, S .
EARTH AND PLANETARY SCIENCE LETTERS, 1986, 79 (3-4) :281-302
[9]   Early to Middle Jurassic history of the southern Siberian continent (Transbaikalia) recorded in sediments of the Siberian Craton: Sm-Nd and U-Pb provenance study [J].
Demonterova, Elena I. ;
Ivanov, Alexei V. ;
Mikheeva, Ekaterina M. ;
Arzhannikova, Anastasia V. ;
Frolov, Andrei O. ;
Arzannikov, Sergei G. ;
Bryanskiy, Nikolai V. ;
Pavlova, Lyudmila A. .
BULLETIN DE LA SOCIETE GEOLOGIQUE DE FRANCE, 2017, 188 (1-2)
[10]  
EBY GN, 1992, GEOLOGY, V20, P641, DOI 10.1130/0091-7613(1992)020<0641:CSOTAT>2.3.CO