FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2912538378> ?p ?o ?g. }

• W2912538378 endingPage "192" @default.
• W2912538378 startingPage "177" @default.
• W2912538378 abstract "High Ba-Sr granitoids occur in a number of tectonic settings, and variable petrogenetic models have been proposed. Those from post-collisional settings are rarely studied and are the focus of this study. Zircon U-Pb geochronology and whole-rock elemental and Sr-Nd-Hf isotopic data are presented for a suite of high Ba-Sr granitoids from the southern margin of the Alxa block, NW China. U-Pb zircon dating shows that the Xijing high Ba-Sr granitoids were emplaced in two periods at ~440 Ma and ~410 Ma, and they are characterized by elevated Ba and Sr contents. The older ~440 Ma high Ba-Sr granitoids range from monzodiorite to quartz monzonite, and the younger ~410 Ma high Ba-Sr granites tend to be more evolved. Both suites have similar enriched Sr-Nd-Hf isotopic ratios, low Ba/Th and Sr/Th ratios, and high Th contents and Th/Ce ratios indicative of a sediment contribution. This is potentially linked to previous subduction of the North Qilian ocean slab. Major and trace element calculations suggest that the older ~440 Ma granitoids experienced up to ~60% fractionation at 4–6 kbar with a crystallizing assemblage dominated by amphibole and plagioclase. The younger ~410 Ma granites could in turn have been formed by a further 80% fractional crystallization at lower pressures (1–2 kbar). Trace element and Sr-Nd isotopic modeling suggest incorporation of ~5% slab-derived sediment into mantle magma source of these high Ba-Sr granitoids. We note that post-collisional granitoids with high Ba and Sr characteristics may also reflect a sediment contribution in their source region, and this may be a key aspect of why such granites plot in the field of post-collisional granites in the Rb vs Y + Nb diagram. Some sanukitoids with high Ba and Sr contents in the late Archean also appear to reflect sediment subduction and they hence may represent early stages of crustal recycling." @default.
• W2912538378 created "2019-02-21" @default.
• W2912538378 creator A5013512369 @default.
• W2912538378 creator A5029612062 @default.
• W2912538378 creator A5033351939 @default.
• W2912538378 creator A5041396989 @default.
• W2912538378 creator A5063726357 @default.
• W2912538378 creator A5064100290 @default.
• W2912538378 creator A5073145530 @default.
• W2912538378 creator A5085082654 @default.
• W2912538378 creator A5086521694 @default.
• W2912538378 creator A5088262336 @default.
• W2912538378 date "2019-05-01" @default.
• W2912538378 modified "2023-10-14" @default.
• W2912538378 title "Sediment contribution in post-collisional high Ba-Sr magmatism: Evidence from the Xijing pluton in the Alxa block, NW China" @default.
• W2912538378 cites W107967088 @default.
• W2912538378 cites W1510549006 @default.
• W2912538378 cites W1514994218 @default.
• W2912538378 cites W1603999376 @default.
• W2912538378 cites W1964047299 @default.
• W2912538378 cites W1967082613 @default.
• W2912538378 cites W1968839333 @default.
• W2912538378 cites W1970623293 @default.
• W2912538378 cites W1971685925 @default.
• W2912538378 cites W1973012528 @default.
• W2912538378 cites W1974416183 @default.
• W2912538378 cites W1976840700 @default.
• W2912538378 cites W1977912435 @default.
• W2912538378 cites W1979705656 @default.
• W2912538378 cites W1982093108 @default.
• W2912538378 cites W1983339705 @default.
• W2912538378 cites W1983492551 @default.
• W2912538378 cites W1985155062 @default.
• W2912538378 cites W1985794693 @default.
• W2912538378 cites W1986500084 @default.
• W2912538378 cites W1987280073 @default.
• W2912538378 cites W1987647377 @default.
• W2912538378 cites W1994922107 @default.
• W2912538378 cites W1997737817 @default.
• W2912538378 cites W1998028544 @default.
• W2912538378 cites W1998707404 @default.
• W2912538378 cites W2000482636 @default.
• W2912538378 cites W2000713509 @default.
• W2912538378 cites W2001365998 @default.
• W2912538378 cites W2003032844 @default.
• W2912538378 cites W2004725136 @default.
• W2912538378 cites W2006519630 @default.
• W2912538378 cites W2011065740 @default.
• W2912538378 cites W2011607179 @default.
• W2912538378 cites W2019402209 @default.
• W2912538378 cites W2020116870 @default.
• W2912538378 cites W2020304604 @default.
• W2912538378 cites W2020324113 @default.
• W2912538378 cites W2022776122 @default.
• W2912538378 cites W2022859730 @default.
• W2912538378 cites W2027862110 @default.
• W2912538378 cites W2031844927 @default.
• W2912538378 cites W2033683037 @default.
• W2912538378 cites W2036251127 @default.
• W2912538378 cites W2044911516 @default.
• W2912538378 cites W2044921168 @default.
• W2912538378 cites W2048690001 @default.
• W2912538378 cites W2049340605 @default.
• W2912538378 cites W2051273227 @default.
• W2912538378 cites W2051766674 @default.
• W2912538378 cites W2052095461 @default.
• W2912538378 cites W2056461232 @default.
• W2912538378 cites W2060964635 @default.
• W2912538378 cites W2067173167 @default.
• W2912538378 cites W2067208653 @default.
• W2912538378 cites W2067988163 @default.
• W2912538378 cites W2069317688 @default.
• W2912538378 cites W2069417771 @default.
• W2912538378 cites W2069558707 @default.
• W2912538378 cites W2069883471 @default.
• W2912538378 cites W2072620570 @default.
• W2912538378 cites W2074493558 @default.
• W2912538378 cites W2074607639 @default.
• W2912538378 cites W2075328050 @default.
• W2912538378 cites W2077704118 @default.
• W2912538378 cites W2078105240 @default.
• W2912538378 cites W2080003870 @default.
• W2912538378 cites W2080325016 @default.
• W2912538378 cites W2081673195 @default.
• W2912538378 cites W2082461046 @default.
• W2912538378 cites W2084438062 @default.
• W2912538378 cites W2084644053 @default.
• W2912538378 cites W2085987682 @default.
• W2912538378 cites W2086820683 @default.
• W2912538378 cites W2088949376 @default.
• W2912538378 cites W2090206242 @default.
• W2912538378 cites W2092441504 @default.
• W2912538378 cites W2095681242 @default.
• W2912538378 cites W2095865264 @default.
• W2912538378 cites W2097477323 @default.
• W2912538378 cites W2102199274 @default.
• W2912538378 cites W2102249420 @default.
• W2912538378 cites W2107790246 @default.

• next