CO2-Rich Rejuvenated Stage Lavas on Hawaiian Islands

doi:10.1029/2022GC010525

CORC > 海洋研究所 > 中国科学院海洋研究所 > 海洋地质与环境重点实验室

	CO2-Rich Rejuvenated Stage Lavas on Hawaiian Islands
	Zhang, Guoliang 2,3,4,5; Wang, Shuai 4,5; Huang, Shichun 1; Zhan, Mingjun 4,5; Yao, Junhua 4,5
刊名	GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS
	2022-09-01
卷号	23 期号:9 页码:17
关键词	olivine CO2 metasomatism rejuvenated lavas mantle plume Hawaiian Islands
DOI	10.1029/2022GC010525
通讯作者	Zhang, Guoliang(zhangguoliang@qdio.ac.cn)
英文摘要	Sedimentary carbonates are sent to the deep mantle if they are not completely destroyed at subduction zones, and subducted carbonates may contribute to plume volcanism. To better constrain the role of recycled carbonates in Hawaiian volcanism, we report high-precision olivine and whole-rock geochemical compositions of shield and rejuvenated stage lavas from Kauai, Oahu and Maui Islands. The studied rejuvenated stage whole-rocks have low SiO2 and high CaO concentrations, and are depleted in high field strength elements, such as, Nb and Zr, consistent with a role of carbonated melt. Rejuvenated stage olivines have Ni abundance lower than and CaO and MnO contents similar to those of shield stage at a given Fo. The calculated partition coefficients of Ca (DCaOl-melt ${D}_{\mathrm{C}\mathrm{a}}<^>{\mathrm{O}\mathrm{l}-\mathrm{m}\mathrm{e}\mathrm{l}\mathrm{t}}$) and Mn (DMnOl-melt ${D}_{\mathrm{M}\mathrm{n}}<^>{\mathrm{O}\mathrm{l}-\mathrm{m}\mathrm{e}\mathrm{l}\mathrm{t}}$) between olivine and shield melts are consistent with those of a dry melt system. However, the low DCaOl-melt ${D}_{\mathrm{C}\mathrm{a}}<^>{\mathrm{O}\mathrm{l}-\mathrm{m}\mathrm{e}\mathrm{l}\mathrm{t}}$ and DMnOl-melt ${D}_{\mathrm{M}\mathrm{n}}<^>{\mathrm{O}\mathrm{l}-\mathrm{m}\mathrm{e}\mathrm{l}\mathrm{t}}$ for rejuvenated lavas can only be explained by a volatile-rich melt system. Based on the observed DCaOl-melt ${D}_{\mathrm{C}\mathrm{a}}<^>{\mathrm{O}\mathrm{l}-\mathrm{m}\mathrm{e}\mathrm{l}\mathrm{t}}$ and DMnOl-melt ${D}_{\mathrm{M}\mathrm{n}}<^>{\mathrm{O}\mathrm{l}-\mathrm{m}\mathrm{e}\mathrm{l}\mathrm{t}}$ in rejuvenated lavas, and considering the effect of H2O, our modeling calculation shows that rejuvenated primary magmas contain up to similar to 10 wt% CO2, indicating a CO2-rich mantle source. Using olivine-spinel aluminum exchange thermometry, we show that the rejuvenated primary magma temperatures are similar to those of shield stage. We posit that the CO2-rich rejuvenated stage lavas with lower olivine Ni than those of shield stage lavas were originated from melting of carbonated peridotites in the plume. The carbonated melts that metasomatized the peridotites were likely derived from subducted ancient carbonate-bearing lithospheric mantle.
资助项目	National Natural Science Foundation of China[41876040] ; National Natural Science Foundation of China[91858206] ; National Natural Science Foundation of China[41888101] ; Laboratory for Marine Geology, Qingdao National Laboratory for Marine Science and Technology[MGQNLM-TD201806] ; Taishan Scholars Program of Shandong Province[tsqn201909157]
WOS研究方向	Geochemistry & Geophysics
语种	英语
出版者	AMER GEOPHYSICAL UNION
WOS记录号	WOS:000859100400001
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/180720]
专题	海洋研究所_海洋地质与环境重点实验室
通讯作者	Zhang, Guoliang
作者单位	1.Univ Tennessee, Dept Earth & Planetary Sci, Knoxville, TN USA 2.Chinese Acad Sci, Ctr Ocean Megasci, Qingdao, Peoples R China 3.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Geol, Qingdao, Peoples R China 4.Chinese Acad Sci, Key Lab Marine Geol & Environm, Inst Oceanol, Qingdao, Peoples R China 5.Chinese Acad Sci, Ctr Deep Sea Res, Inst Oceanol, Qingdao, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Guoliang,Wang, Shuai,Huang, Shichun,et al. CO2-Rich Rejuvenated Stage Lavas on Hawaiian Islands[J]. GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS,2022,23(9):17.
APA	Zhang, Guoliang,Wang, Shuai,Huang, Shichun,Zhan, Mingjun,&Yao, Junhua.(2022).CO2-Rich Rejuvenated Stage Lavas on Hawaiian Islands.GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS,23(9),17.
MLA	Zhang, Guoliang,et al."CO2-Rich Rejuvenated Stage Lavas on Hawaiian Islands".GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS 23.9(2022):17.