DOI: 10.1016/j.epsl.2020.116140
论文题名: S-type granites: Their origin and distribution through time as determined from detrital zircons
作者: Zhu Z. ; Campbell I.H. ; Allen C.M. ; Burnham A.D.
刊名: Earth and Planetary Science Letters
ISSN: 0012821X
出版年: 2020
卷: 536 语种: 英语
中文关键词: detrital zircons
; S-type granites
; supercontinents
; trace elements
; turbidites
英文关键词: Binary alloys
; Feldspar
; Lead alloys
; Metals
; Molar concentration
; Phosphate minerals
; Rare earths
; Trace elements
; Uranium alloys
; Zircon
; Continent-continent collisions
; Cumulative distribution
; Detrital zircon
; High production rate
; Relative contribution
; S-type granites
; Supercontinents
; turbidites
; Granite
; detrital deposit
; formation mechanism
; I-type rock
; petrology
; rare earth element
; S-type rock
; supercontinent
; trace element
; turbidite
; uranium-lead dating
; zircon
英文摘要: A global compilation of 6911 detrital zircon U-Pb ages and trace element data from 52 major rivers shows secular variations in the relative contributions of I-type and S-type granites through time. The average abundance of S-type granites has been quantified using two methods: (i) comparing the cumulative distribution of P concentrations for selected time intervals, and (ii) using plots of molar P against rare earth elements (REE) plus Y. The former is based on the average P content in S-type granite zircons being greater than in I-types, resulting from the high solubility of apatite in strongly peraluminous S-type granitic magmas. The latter is based on the substitution of (REE3+ + Y3+) for Zr in zircon from S-type granites being charge-balanced by P5+, leading to a near 1:1 correlation between (REE + Y) and P. The results from both methods show a similar pattern: the most important period of S-type zircon production coincides with the assembly of Gondwana and the least important with the formation of Superia (Archean). Both methods also show that Rodinia was a period of relatively low S-type zircon production, compared with the adjacent periods of supercontinent formation: Gondwana and Nuna. Turbidites are an essential component of the S-type granite source region: greywackes provide quartz and feldspar and the interbedded shales water and K. Together these form the essential components for granite minimum melting. We attribute the high production rate of S-type granites during the amalgamation of Pangea, Gondwana and Nuna to the formation of extensive turbidite fans, produced by rapid erosion of the super high mountains that formed during continent-continent collisions. The low production of S-type granites during the assembly of Rodinia is attributed to the dominance of Andean type margins during that period: Andean type margins do not form the giant fans that are essential for the formation of voluminous S-type granite suites. © 2020 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/165390
Appears in Collections: 气候变化与战略
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作者单位: Research School of Earth Sciences, Australian National University, CanberraACT 2601, Australia; Centralized Analytical Research Facility, Institute for Future Environments, Queensland University of Technology, Brisbane, Queensland 4000, Australia
Recommended Citation:
Zhu Z.,Campbell I.H.,Allen C.M.,et al. S-type granites: Their origin and distribution through time as determined from detrital zircons[J]. Earth and Planetary Science Letters,2020-01-01,536