IOCAS-IR  > 深海极端环境与生命过程研究中心
Origin of high-Mg arc volcanism and fate of subducted sedimentary carbonates in the western Pacific: Evidence from partial melting experiments on mixed sediment and peridotite
Zhan, Mingjun1,2; Zhang, Guoliang1,3,4
2021-10-28
发表期刊GEOLOGICAL JOURNAL
ISSN0072-1050
页码15
通讯作者Zhang, Guoliang(zhangguoliang@qdio.ac.cn)
摘要Andesitic to rhyolitic arc volcanism commonly occurs in the cold subduction system in the modern western Pacific, however, their genesis remains debated. The high-Mg andesitic arc rocks with enrichments of Th and K are suggested to be derived from a contribution of the subducted sediments and the depleted mantle wedge. The partial melts of pure sediments have MgO too low to explain the origin of such high-Mg arc rocks. For a cold subduction system, melting of subducted slab can unlikely occur, while sediment diapirism serves as a possible mechanism to contribute to the origin of arc volcanism. Here, we conducted high-pressure experiments on the mixed sediment (+/- CaCO3) and peridotite with proportions of 7:3 and 5:5 at 3.5 GPa and 1000-1300 degrees C. The experiment resulted in andesitic to rhyolitic melts with elevated MgO and enriched K2O. All melts reduce in K2O with increasing temperatures as no K-rich minerals were produced. The interactions between carbonate-bearing sediments and peridotites during the diapirism promote decarbonation and produce melts with elevated MgO. The results of the experiments can explain the origin of high-Mg and K-rich andesite-rhyolite series of the Izu-Bonin-Mariana arc system. A higher sediment proportion used in the experiment is coupled with a stronger effect of garnet, which explains the volcanic rocks with higher K2O and La/Yb. We propose that sediment diapirism in the mantle wedge can produce high-Mg and K-rich andesitic-rhyolitic arc lavas and facilitate decarbonation of subducted sedimentary carbonates in the typical cold Izu-Bonin-Mariana subduction zone.
关键词arc volcanism garnet effect sediment diapir sedimentary carbonate subduction zone
DOI10.1002/gj.4306
收录类别SCI
语种英语
资助项目National Natural Science Foundation of China[91858206] ; Science & Technology Basic Resources Investigation Program of China[2017FY100801] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA22050101] ; Taishan Scholars Program of Shandong Province[tsqn201909157]
WOS研究方向Geology
WOS类目Geosciences, Multidisciplinary
WOS记录号WOS:000712023500001
出版者WILEY
引用统计
被引频次:3[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.qdio.ac.cn/handle/337002/177138
专题深海极端环境与生命过程研究中心
通讯作者Zhang, Guoliang
作者单位1.Chinese Acad Sci, Ctr Deep Sea Res, Inst Oceanol, Qingdao 266071, Peoples R China
2.Univ Chinese Acad Sci, Beijing, Peoples R China
3.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Geol, Qingdao, Peoples R China
4.Chinese Acad Sci, Ctr Ocean Megasci, Qingdao, Peoples R China
第一作者单位中国科学院海洋研究所
通讯作者单位中国科学院海洋研究所;  中国科学院海洋大科学研究中心
推荐引用方式
GB/T 7714
Zhan, Mingjun,Zhang, Guoliang. Origin of high-Mg arc volcanism and fate of subducted sedimentary carbonates in the western Pacific: Evidence from partial melting experiments on mixed sediment and peridotite[J]. GEOLOGICAL JOURNAL,2021:15.
APA Zhan, Mingjun,&Zhang, Guoliang.(2021).Origin of high-Mg arc volcanism and fate of subducted sedimentary carbonates in the western Pacific: Evidence from partial melting experiments on mixed sediment and peridotite.GEOLOGICAL JOURNAL,15.
MLA Zhan, Mingjun,et al."Origin of high-Mg arc volcanism and fate of subducted sedimentary carbonates in the western Pacific: Evidence from partial melting experiments on mixed sediment and peridotite".GEOLOGICAL JOURNAL (2021):15.
条目包含的文件
文件名称/大小 文献类型 版本类型 开放类型 使用许可
Geological Journal -(4337KB)期刊论文出版稿限制开放CC BY-NC-SA浏览
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Zhan, Mingjun]的文章
[Zhang, Guoliang]的文章
百度学术
百度学术中相似的文章
[Zhan, Mingjun]的文章
[Zhang, Guoliang]的文章
必应学术
必应学术中相似的文章
[Zhan, Mingjun]的文章
[Zhang, Guoliang]的文章
相关权益政策
暂无数据
收藏/分享
文件名: Geological Journal - 2021 - Zhan - Origin of high‐Mg arc volcanism and fate of subducted sedimentary carbonates in the.pdf
格式: Adobe PDF
所有评论 (0)
暂无评论
 

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。