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The Petrogenesis of the Permian Podong Ultramafic Intrusion in the Tarim Craton, Western China: Constraints from C-He-Ne-Ar Isotopes
Zhang, Mingjie1; Feng, Pengyu1; Li, Tong1; Li, Liwu2; Fu, Juerong1; Wang, Peng3; Wang, Yuekun1; Li, Zhongping2; Wang, Xiaodong1
2019-08-22
Source PublicationGEOFLUIDS
ISSN1468-8115
Volume2019Pages:14
AbstractThe Podong Permian ultramafic intrusion is only one ultramafic intrusion with massif Ni-Cu sulfide mineralization in the Pobei layered mafic-ultramafic complex, western China. It is obviously different in sulfide mineralization from the nearby coeval Poyi ultramafic intrusion with the largest disseminated Ni-Cu sulfide mineralization and mantle plume contribution (Zhang et al., 2017). The type and addition mechanism of the confirmed crustal contaminations and possible mantle plume involved in the intrusion formation require evidences from carbon and noble gas isotopic compositions. In the present study, we have measured C, He, Ne, and Ar isotopic compositions of volatiles from magmatic minerals in the Podong ultramafic intrusion. The results show that olivine, pyroxene, and plagioclase minerals in the Podong intrusion have variable delta C-13 of CO2 (-24.5 parts per thousand to -3.2 parts per thousand). The CH4, C2H6, C3H8, and C4H10 hydrocarbon gases show normal or partial reversal distribution patterns of carbon isotope with carbon number and light delta C-13(1) value of CH4, indicating the hydrocarbon gases of biogenic origin. The delta C-13 of CO2 and CH4 suggested the magmatic volatile of the mantle mixed with the volatiles of thermogenic and crustal origins. Carbon and noble gas isotopes indicated that the Podong intrusion could have a different petrogenesis from the Poyi ultramafic intrusion. Two types of contaminated crustal materials can be identified as crustal fluids from subducted altered oceanic crust (AOC) in the lithospheric mantle source and a part of the siliceous crust. The carbon isotopes for different minerals show that magma spent some time crystallizing in a magma chamber during which assimilation of crustal material occurred. Subduction-devolatilization of altered oceanic crust could be the best mechanism that transported large proportion of ASF (air-saturated fluid) and crustal components into the mantle source. The mantle plume existing beneath the Poyi intrusion could provide less contribution of real materials of silicate and fluid components.
DOI10.1155/2019/6402571
Funding OrganizationNSF of China ; NSF of China ; STEP program ; STEP program ; Gansu Key Lab of Petrol. Res. ; Gansu Key Lab of Petrol. Res. ; DPHEC ; DPHEC ; NSF of China ; NSF of China ; STEP program ; STEP program ; Gansu Key Lab of Petrol. Res. ; Gansu Key Lab of Petrol. Res. ; DPHEC ; DPHEC ; NSF of China ; NSF of China ; STEP program ; STEP program ; Gansu Key Lab of Petrol. Res. ; Gansu Key Lab of Petrol. Res. ; DPHEC ; DPHEC ; NSF of China ; NSF of China ; STEP program ; STEP program ; Gansu Key Lab of Petrol. Res. ; Gansu Key Lab of Petrol. Res. ; DPHEC ; DPHEC
WOS KeywordRARE-GAS SYSTEMATICS ; MID-ATLANTIC RIDGE ; NW CHINA ; NOBLE-GASES ; BEISHAN AREA ; SULFIDE MINERALIZATION ; SUBCONTINENTAL MANTLE ; DEPLETED MANTLE ; OCEANIC-CRUST ; XINJIANG
Language英语
Funding ProjectNSF of China[41872075] ; NSF of China[41572136] ; NSF of China[41502143] ; NSF of China[41473062] ; NSF of China[41372095] ; STEP program[2019QZKK0704] ; Gansu Key Lab of Petrol. Res.[SZDKFJJ20170603] ; DPHEC[20120211110023]
Funding OrganizationNSF of China ; NSF of China ; STEP program ; STEP program ; Gansu Key Lab of Petrol. Res. ; Gansu Key Lab of Petrol. Res. ; DPHEC ; DPHEC ; NSF of China ; NSF of China ; STEP program ; STEP program ; Gansu Key Lab of Petrol. Res. ; Gansu Key Lab of Petrol. Res. ; DPHEC ; DPHEC ; NSF of China ; NSF of China ; STEP program ; STEP program ; Gansu Key Lab of Petrol. Res. ; Gansu Key Lab of Petrol. Res. ; DPHEC ; DPHEC ; NSF of China ; NSF of China ; STEP program ; STEP program ; Gansu Key Lab of Petrol. Res. ; Gansu Key Lab of Petrol. Res. ; DPHEC ; DPHEC
WOS Research AreaGeochemistry & Geophysics ; Geology
WOS SubjectGeochemistry & Geophysics ; Geology
WOS IDWOS:000484732300001
PublisherWILEY-HINDAWI
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/93596
Collection兰州油气中心
Corresponding AuthorZhang, Mingjie
Affiliation1.Lanzhou Univ, Sch Earth Sci, Key Lab Mineral Resources Western China Gansu, Lanzhou 730000, Peoples R China
2.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Key Lab Petr Resource, Lanzhou 730000, Gansu, Peoples R China
3.Xinjiang Bur Geol & Mineral Explorat, Geol Unit 6, Hami 839000, Peoples R China
Recommended Citation
GB/T 7714
Zhang, Mingjie,Feng, Pengyu,Li, Tong,et al. The Petrogenesis of the Permian Podong Ultramafic Intrusion in the Tarim Craton, Western China: Constraints from C-He-Ne-Ar Isotopes[J]. GEOFLUIDS,2019,2019:14.
APA Zhang, Mingjie.,Feng, Pengyu.,Li, Tong.,Li, Liwu.,Fu, Juerong.,...&Wang, Xiaodong.(2019).The Petrogenesis of the Permian Podong Ultramafic Intrusion in the Tarim Craton, Western China: Constraints from C-He-Ne-Ar Isotopes.GEOFLUIDS,2019,14.
MLA Zhang, Mingjie,et al."The Petrogenesis of the Permian Podong Ultramafic Intrusion in the Tarim Craton, Western China: Constraints from C-He-Ne-Ar Isotopes".GEOFLUIDS 2019(2019):14.
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