欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
大别-苏鲁造山带和华北陆块东南缘中生代花岗岩具有弧型微量元素分布特征和富集的Sr-Nd．Hf同位素组成，表明它们来源于古老大陆地壳物质的重熔．这些花岗岩中普遍含有新元古代中期和三叠纪U—Pb年龄的继承锆石，分别与大别-苏鲁造山带超高压变火成岩原岩年龄和超高压变质年龄一致．部分花岗岩具有低的锆石万δ18O值．SIMS微区原位0同位素分析揭示，具有新元古代和三叠纪u—Pb年龄的继承锆石也普遍亏损18O．新元古代U—Pb年龄和18O亏损是有效区分俯）中华南陆块与上覆华北陆块的鉴定性特征，表明俯冲华南陆壳是这些中生代花岗岩的源区物质．另外，这些花岗岩中还含有古元古代和太古代u—Pb年龄的继承锆石，特别是华北陆块东南缘中生代花岗岩含有～2．5Ga的继承锆石，表明它们的岩浆源区既有华南陆壳物质，也有华北陆壳物质．
同期刊论文项目
同项目期刊论文
An online method combining a Gasbench II with continuous flow isotope ratio mass spectrometry to det
Partial melting, fluid supercriticality and element mobility in ultrahigh-pressure metamorphic rocks
Petrological and zircon evidence for anatexis of UHP quartzite during continental collision in the S
Neoproterozoic continental accretion in South China: Geochemical evidence from the Fuchuan ophiolite
Marine carbonate records of terrigenous input into Paleotethyan seawater: Geochemical constraints fr
Multiphase solid inclusions in zoisite-bearing eclogite: evidence for partial melting of ultrahigh-p
Polyphase growth of accessory minerals during continental collision: geochemical evidence from ultra
Zirconological tracing of transition between aqueous fluid and hydrous melt in the crust: Constraint
Geochemical constraints on the origin of post-depositional fluids in sedimentary carbonates of the E
Trace element composition of continentally subducted slab-derived melt: insight from multiphase soli
Measurement of in-situ oxygen isotope ratios in monazite by SHRIMP ion microprobe: Standards, protoc
Stable isotope evidence for involvement of deglacial meltwater in Ediacaran carbonates in South Chin
Postcollisional magmatism: Geochemical constraints on the petrogenesis of Mesozoic granitoids in the
Zr-in-rutile thermometry of eclogite in the Dabie orogen: Constraints on rutile growth during contin
Origin of andesitic rocks: Geochemical constraints from Mesozoic volcanics in the Luzong basin, Sout
Petrogenesis of Triassic granites from the Nanling Range in South China: Implications for geochemica
Anomalous nitrogen isotopes in ultrahigh-pressure metamorphic rocks from the Sulu orogenic belt: Eff
Fluid-rock interaction and geochemical transport during protolith emplacement and continental collis
Water contents and hydrogen isotopes in nominally anhydrous minerals from UHP metamorphic rocks in t
Dehydration melting of ultrahigh-pressure eclogite in the Dabie orogen: evidence from multiphase sol
Postcollisional mafic igneous rocks record crust-mantle interaction during continental deep subducti
Tectonic development from oceanic subduction to continental collision: Geochemical evidence from pos
The source of Mesozoic granitoids in South China: Integrated geochemical constraints from the Taosha
Source and magma mixing processes in continental subduction factory: Geochemical evidence from postc
期刊信息
位置：