FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2078261567> ?p ?o ?g. }

• W2078261567 endingPage "4165" @default.
• W2078261567 startingPage "4145" @default.
• W2078261567 abstract "Oxygen isotope analysis and U-Pb dating were carried out on zircons from granite, granitic gneiss and eclogite in the Dabie-Sulu orogenic belt of east-central China. The results show a wide variation in zircon δ18O values from −10.9 to 8.5‰. Most of the values are lower than normal mantle zircon and almost half have prominently negative values. The low δ18O zircons have protolith ages of 700 to 800 Ma and metamorphic ages of 205 to 250 Ma, respectively. Fluid availability within the metaigneous rocks dictates the extent of metamorphic recrystallization and overgrowth. The igneous zircons have preserved their magmatic zoning and middle Neoproterozoic U-Pb age during the Triassic metamorphism, indicating low fluid availability. Widespread low δ18O values are identified in the magmatic zircons of middle Neoproterozoic age, within an outcrop area of over 20,000 km2 along the northern edge of the South China Block. The low δ18O zircons record the presence of large volumes of low δ18O igneous rocks that were derived from remelting of meteoric-hydrothermally altered rocks at some time between 700 and 800 Ma. The U-Pb ages for metaigneous protoliths and granites are correlated not only with the timing of rifting accompanying the breakup of Rodinia, but also with contemporary glacial deposits in the South China Block at paleolatitudes of 30 to 40°N. Melting of glacial ice and snow is suggested, instead of the direct involvement of meteoric water, to produce the low δ18O fluid with oxygen isotopic signatures like the cold-climate meteoric water. The rifting created conditions favorable to anatexis of meteoric-hydrothermally altered rocks. Glaciated regions supplied copious water for the water-rock interaction during magma emplacement along rifting zones. Both rifting and glaciation favored the generation of the low δ18O magmas in the region. The low δ18O zircons are thus interpreted to have crystallized from the low δ18O magmas of middle Neoproterozoic age, and onset of the generation of low δ18O magmas in the northern margin of the South China Block is estimated to occur at about 758 ± 15 Ma. The large-scale remelting of hydrothermally altered crust not only results from repetitive emplacement of mafic magmas along the rifting zones with protracted episodes of water-rock interaction, but also involves rift systems that rapidly introduce large volumes of fluid through confined pathways and traps in a short space of time in response to tectonic triggers. Occurrence of the large-scale 18O depletion during the middle Neoproterozoic may be a manifestation of the cold paleoclimate related to the snowball Earth event." @default.
• W2078261567 created "2016-06-24" @default.
• W2078261567 creator A5007024896 @default.
• W2078261567 creator A5011306686 @default.
• W2078261567 creator A5038855167 @default.
• W2078261567 creator A5053849442 @default.
• W2078261567 creator A5056465234 @default.
• W2078261567 creator A5071632243 @default.
• W2078261567 date "2004-10-01" @default.
• W2078261567 modified "2023-10-18" @default.
• W2078261567 title "Zircon U-Pb and oxygen isotope evidence for a large-scale 18O depletion event in igneous rocks during the Neoproterozoic" @default.
• W2078261567 cites W1521262137 @default.
• W2078261567 cites W1523733318 @default.
• W2078261567 cites W1575749970 @default.
• W2078261567 cites W1615737483 @default.
• W2078261567 cites W1965758707 @default.
• W2078261567 cites W1968541811 @default.
• W2078261567 cites W1969266045 @default.
• W2078261567 cites W1972673996 @default.
• W2078261567 cites W1975652198 @default.
• W2078261567 cites W1977747726 @default.
• W2078261567 cites W1978245070 @default.
• W2078261567 cites W1981002430 @default.
• W2078261567 cites W1981544426 @default.
• W2078261567 cites W1985195619 @default.
• W2078261567 cites W1985297387 @default.
• W2078261567 cites W1988503846 @default.
• W2078261567 cites W1991024171 @default.
• W2078261567 cites W1991591808 @default.
• W2078261567 cites W1992017229 @default.
• W2078261567 cites W1993236627 @default.
• W2078261567 cites W1994209198 @default.
• W2078261567 cites W1995534791 @default.
• W2078261567 cites W1998481085 @default.
• W2078261567 cites W1998759941 @default.
• W2078261567 cites W1999621813 @default.
• W2078261567 cites W2000563553 @default.
• W2078261567 cites W2007105153 @default.
• W2078261567 cites W2010299436 @default.
• W2078261567 cites W2010608057 @default.
• W2078261567 cites W2011049153 @default.
• W2078261567 cites W2013579065 @default.
• W2078261567 cites W2015061860 @default.
• W2078261567 cites W2016511472 @default.
• W2078261567 cites W2021345743 @default.
• W2078261567 cites W2021370058 @default.
• W2078261567 cites W2021625802 @default.
• W2078261567 cites W2022101709 @default.
• W2078261567 cites W2022181770 @default.
• W2078261567 cites W2024292236 @default.
• W2078261567 cites W2024410667 @default.
• W2078261567 cites W2026780623 @default.
• W2078261567 cites W2027597710 @default.
• W2078261567 cites W2028642961 @default.
• W2078261567 cites W2029068064 @default.
• W2078261567 cites W2029286864 @default.
• W2078261567 cites W2035967472 @default.
• W2078261567 cites W2035982093 @default.
• W2078261567 cites W2036412289 @default.
• W2078261567 cites W2040287076 @default.
• W2078261567 cites W2040903195 @default.
• W2078261567 cites W2046472861 @default.
• W2078261567 cites W2046798589 @default.
• W2078261567 cites W2046980636 @default.
• W2078261567 cites W2047745886 @default.
• W2078261567 cites W2048505147 @default.
• W2078261567 cites W2049286094 @default.
• W2078261567 cites W2050623240 @default.
• W2078261567 cites W2051227459 @default.
• W2078261567 cites W2053422899 @default.
• W2078261567 cites W2054113356 @default.
• W2078261567 cites W2056465791 @default.
• W2078261567 cites W2060447317 @default.
• W2078261567 cites W2061467543 @default.
• W2078261567 cites W2062578168 @default.
• W2078261567 cites W2063006645 @default.
• W2078261567 cites W2063207424 @default.
• W2078261567 cites W2063754919 @default.
• W2078261567 cites W2063969703 @default.
• W2078261567 cites W2064798552 @default.
• W2078261567 cites W2065297279 @default.
• W2078261567 cites W2065497466 @default.
• W2078261567 cites W2066086830 @default.
• W2078261567 cites W2068372312 @default.
• W2078261567 cites W2071654977 @default.
• W2078261567 cites W2071829769 @default.
• W2078261567 cites W2073326270 @default.
• W2078261567 cites W2075348117 @default.
• W2078261567 cites W2080522683 @default.
• W2078261567 cites W2080723705 @default.
• W2078261567 cites W2083841543 @default.
• W2078261567 cites W2086891553 @default.
• W2078261567 cites W2087494921 @default.
• W2078261567 cites W2090722451 @default.
• W2078261567 cites W2093260986 @default.
• W2078261567 cites W2093983309 @default.
• W2078261567 cites W2100634462 @default.
• W2078261567 cites W2102405759 @default.

• next