中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 地质与地球物理研究所
  3. 中国科学院地质与地球物理研究所
  4. 中国科学院矿产资源研究重点实验室
Early Paleozoic subduction fingerprints of the Paleo-Asian ocean in easternmost Central Asian Orogenic Belt (CAOB): Identification of the oldest Alaskan-type complex in the CAOB

文献类型：期刊论文

作者Cui, Meng -Meng2,3,5; Su, Ben-Xun2,3,5; Wang, Jing2,5; Wu, Yong1; Kutyrev, Anton4
刊名GEOLOGICAL SOCIETY OF AMERICA BULLETIN
出版日期2023
卷号135期号:1-2页码:18-28
ISSN号0016-7606
DOI10.1130/B36307.1
英文摘要The early-stage subduction records of the Paleo-Asian ocean are poorly preserved in the eastern segment of the Central Asian Orogenic Belt (CAOB), which hinders con-straints on the evolution of the whole CAOB. This study presents new age data and zircon Hf-O isotopes as well as bulk-rock geochem-istry of the Wuxing mafic-ultramafic complex in the Xingkai massif in northeastern China, which has been identified as Alaskan-type complex with aspects of field occurrence, petrological and mineral assemblages, and mineral chemistry in our recently published work. The results indicate that the complex formed mainly between 517 Ma and 510 Ma with a lithological sequence of Sanying clino-pyroxenite (517 Ma), then Sanying gabbro (514 Ma), and Erying hornblendite (513 Ma), and finally Erying hornblende clinopyrox-enite (510 Ma). The lithological formation sequence is consistent with the intrusive relations between lithological phases and their irrelevant major element compositions and variable trace element patterns of the bulk rocks. The epsilon Hf(t) values of zircon in two samples in this study vary from from +4.45 to +7.61 and from -11.8 to +4.42, respectively and tend to be more depleted with age. These features suggest that the Wuxing complex was a product of long-term arc magmatism and experienced significant ancient crustal assimilation in early-stage magmas and negligible contamination in later ones. The presence of 1222 Ma and 706 Ma inherited zircon grains implies existence of Proterozoic basement in the Xingkai massif and its continental arc setting in Cambrian. The Wuxing complex is the oldest Alaskan-type complex found so far in the entire CAOB and is a good witness of the Paleo-Asian oceanic subduction in the easternmost CAOB. The older age of the Wuxing complex compared to the regional Hongqiling intrusion is also compatible with its Alaskan-type nature and platinum-group element mineralization, which are distinct to the Permian-Triassic Ni-Cu sulfide deposit-hosting mafic- ultramafic intrusions in the southern CAOB.
WOS关键词PLATINUM-GROUP MINERALS ; MAFIC-ULTRAMAFIC COMPLEXES ; MONGOL-OKHOTSK OCEAN ; NE CHINA ; NW CHINA ; HEILONGJIANG PROVINCE ; PLACER DEPOSITS ; JILIN PROVINCE ; CENTRAL URALS ; GEOCHRONOLOGY
资助项目National Natural Science Foundation of China[41973012] ; Youth Innovation Promotion Association, Chinese Academy of Sciences
WOS研究方向Geology
语种英语
出版者GEOLOGICAL SOC AMER, INC
WOS记录号WOS:000950640600002
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences
源URL[http://ir.iggcas.ac.cn/handle/132A11/110730]  
专题地质与地球物理研究所_中国科学院矿产资源研究重点实验室
通讯作者Cui, Meng -Meng; Su, Ben-Xun
作者单位1.CNNC China Natl Nucl Corp, Beijing Res Inst Uranium Geol, Key Lab Uranium Resources Explorat & Evaluat Techn, Beijing 100029, Peoples R China
2.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing 100029, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Russian Acad Sci, Inst Volcanol & Seismol, Far Eastern Branch, Piipa Blvd 9, Petropavlovsk Kamchatski 683006, Russia
5.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China
推荐引用方式
GB/T 7714		 Cui, Meng -Meng,Su, Ben-Xun,Wang, Jing,et al. Early Paleozoic subduction fingerprints of the Paleo-Asian ocean in easternmost Central Asian Orogenic Belt (CAOB): Identification of the oldest Alaskan-type complex in the CAOB[J]. GEOLOGICAL SOCIETY OF AMERICA BULLETIN,2023,135(1-2):18-28.
APA Cui, Meng -Meng,Su, Ben-Xun,Wang, Jing,Wu, Yong,&Kutyrev, Anton.(2023).Early Paleozoic subduction fingerprints of the Paleo-Asian ocean in easternmost Central Asian Orogenic Belt (CAOB): Identification of the oldest Alaskan-type complex in the CAOB.GEOLOGICAL SOCIETY OF AMERICA BULLETIN,135(1-2),18-28.
MLA Cui, Meng -Meng,et al."Early Paleozoic subduction fingerprints of the Paleo-Asian ocean in easternmost Central Asian Orogenic Belt (CAOB): Identification of the oldest Alaskan-type complex in the CAOB".GEOLOGICAL SOCIETY OF AMERICA BULLETIN 135.1-2(2023):18-28.

入库方式： OAI收割

来源：地质与地球物理研究所

浏览0
下载0
收藏0
其他版本

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。