FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2950351792> ?p ?o ?g. }

• W2950351792 endingPage "105370" @default.
• W2950351792 startingPage "105370" @default.
• W2950351792 abstract "The petrogenesis of Neoproterozoic igneous rocks at the northwestern margin of the Yangtze Block and their tectonic setting are controversial. Here we present whole–rock major and trace elements and Nd–Hf isotopic data for felsic volcanic rocks from the Bikou Group. These ca. 820–810 Ma volcanic rocks consist of dacite and rhyolite with SiO2 ranging from 64.4 to 77.0 wt%. Most rocks show decreasing P2O5 with increasing SiO2 and Th and have I–type granite affinities (metaluminous volcanic rocks). However, four rhyolites from the lower part of the Bikou Group show A–type granite affinities (alkaline rhyolites), characterized by high 10,000*Ga/Al and FeOt/(FeOt + MgO) ratios and high (Zr + Nb + Ce + Y) contents. The felsic volcanic rocks commonly have relatively high Zr saturation temperature (up to 960 °C) and most of the felsic volcanic rocks have εNd(t) and εHf(t) values lower than the contemporaneous basalts in the Bikou Group, but higher than the basement rocks in the study area. Among them, four alkaline rhyolites have εNd(t) and εHf(t) values higher than the metaluminous volcanic rocks in the lower Bikou Group. We propose that the metaluminous volcanic rocks were likely produced by partial melting of newly underplated basaltic crust, with involvement of different proportions of basement rocks, whereas a two–stage model is proposed for the formation of the alkaline rhyolites, i.e. partial melting of newly underplated basaltic crust forming early granitoids, followed by low pressure partial melting of these granitoids to generate the alkaline rhyolitic magma. Combined with previous studies, the bimodal occurrence of volcanic rocks within the Bikou Group, and the A–type granite affinity of some rhyolites, as well as the presence of ocean island (OIB)–type basalts in the upper part of Bikou Group, suggest an extensional setting. This is consistent with opening of the Kangdian rift basin to the southwest at this time. We thus propose that the ca. 820–810 Ma Bikou bimodal volcanic rocks formed in response to the breakup of the Rodinia supercontinent." @default.
• W2950351792 created "2019-06-27" @default.
• W2950351792 creator A5009237964 @default.
• W2950351792 creator A5083387796 @default.
• W2950351792 creator A5084415616 @default.
• W2950351792 creator A5085917791 @default.
• W2950351792 creator A5090570618 @default.
• W2950351792 date "2019-09-01" @default.
• W2950351792 modified "2023-10-06" @default.
• W2950351792 title "Petrogenesis of the ca. 820–810 Ma felsic volcanic rocks in the Bikou Group: Implications for the tectonic setting of the western margin of the Yangtze Block" @default.
• W2950351792 cites W1161557096 @default.
• W2950351792 cites W1573196231 @default.
• W2950351792 cites W1578122124 @default.
• W2950351792 cites W1966642168 @default.
• W2950351792 cites W1970672357 @default.
• W2950351792 cites W1974706494 @default.
• W2950351792 cites W1977650828 @default.
• W2950351792 cites W1978484550 @default.
• W2950351792 cites W1980000874 @default.
• W2950351792 cites W1983212361 @default.
• W2950351792 cites W1983765861 @default.
• W2950351792 cites W1986067309 @default.
• W2950351792 cites W1987860057 @default.
• W2950351792 cites W1988317790 @default.
• W2950351792 cites W1988917189 @default.
• W2950351792 cites W1991202690 @default.
• W2950351792 cites W1992245388 @default.
• W2950351792 cites W1999448338 @default.
• W2950351792 cites W2005284674 @default.
• W2950351792 cites W2009480692 @default.
• W2950351792 cites W2009805159 @default.
• W2950351792 cites W2016574770 @default.
• W2950351792 cites W2017722262 @default.
• W2950351792 cites W2019799984 @default.
• W2950351792 cites W2019805365 @default.
• W2950351792 cites W2024292236 @default.
• W2950351792 cites W2025667306 @default.
• W2950351792 cites W2026700549 @default.
• W2950351792 cites W2029294278 @default.
• W2950351792 cites W2029705499 @default.
• W2950351792 cites W2031783949 @default.
• W2950351792 cites W2033683037 @default.
• W2950351792 cites W2040969351 @default.
• W2950351792 cites W2042692134 @default.
• W2950351792 cites W2042803182 @default.
• W2950351792 cites W2042991064 @default.
• W2950351792 cites W2046961523 @default.
• W2950351792 cites W2048240400 @default.
• W2950351792 cites W2048762296 @default.
• W2950351792 cites W2049131049 @default.
• W2950351792 cites W2055237728 @default.
• W2950351792 cites W2057876276 @default.
• W2950351792 cites W2059250966 @default.
• W2950351792 cites W2059761402 @default.
• W2950351792 cites W2061330424 @default.
• W2950351792 cites W2063207424 @default.
• W2950351792 cites W2066086830 @default.
• W2950351792 cites W2070718822 @default.
• W2950351792 cites W2074233105 @default.
• W2950351792 cites W2075501732 @default.
• W2950351792 cites W2075964210 @default.
• W2950351792 cites W2083522304 @default.
• W2950351792 cites W2087494921 @default.
• W2950351792 cites W2088223235 @default.
• W2950351792 cites W2090080717 @default.
• W2950351792 cites W2090276532 @default.
• W2950351792 cites W2090606427 @default.
• W2950351792 cites W2108538927 @default.
• W2950351792 cites W2143103861 @default.
• W2950351792 cites W2144081161 @default.
• W2950351792 cites W2144531676 @default.
• W2950351792 cites W2149931102 @default.
• W2950351792 cites W2150972039 @default.
• W2950351792 cites W2151154332 @default.
• W2950351792 cites W2157202268 @default.
• W2950351792 cites W2160848319 @default.
• W2950351792 cites W2162868035 @default.
• W2950351792 cites W2164468447 @default.
• W2950351792 cites W2171740164 @default.
• W2950351792 cites W2208069343 @default.
• W2950351792 cites W2230349536 @default.
• W2950351792 cites W2257935371 @default.
• W2950351792 cites W2266805735 @default.
• W2950351792 cites W2291953623 @default.
• W2950351792 cites W2318240411 @default.
• W2950351792 cites W2325514473 @default.
• W2950351792 cites W2334581221 @default.
• W2950351792 cites W2609215612 @default.
• W2950351792 cites W2735682795 @default.
• W2950351792 cites W2750989671 @default.
• W2950351792 cites W2790979268 @default.
• W2950351792 cites W2806413196 @default.
• W2950351792 cites W2900324949 @default.
• W2950351792 cites W2905516915 @default.
• W2950351792 cites W4237128644 @default.
• W2950351792 doi "https://doi.org/10.1016/j.precamres.2019.105370" @default.
• W2950351792 hasPublicationYear "2019" @default.
• W2950351792 type Work @default.

• next