Match!
J.G. Shellnutt
Academia Sinica
14Publications
8H-index
337Citations
Publications 15
Newest
#1J.G. Shellnutt (AS: Academia Sinica)H-Index: 8
#2N. D. MacRae (UWO: University of Western Ontario)H-Index: 1
The Mesoproterozoic (~1.23 Ga) Sudbury dyke swarm was emplaced at equatorial latitudes and cross-cuts the Grenville, Southern and Superior Provinces of the Canadian Shield. The dyke swarm has been linked to the break-up of the Mesoproterozoic supercontinent Columbia (1.8 to 1.3 Ga). The Sudbury dykes are alkaline olivine diabases that extend ~300 km to the W and NW from the Grenville Front. Major element trends and MELTS modeling indicate fractional crystallization of olivine and plagioclase. De...
19 CitationsSource
#1J.G. ShellnuttH-Index: 8
#2Kuo-Lung Wang (AS: Academia Sinica)H-Index: 23
Last.Mei-Fu Zhou (HKU: University of Hong Kong)H-Index: 71
view all 8 authors...
48 CitationsSource
#1J.G. Shellnutt (AS: Academia Sinica)H-Index: 8
#2Bor-ming Jahn (AS: Academia Sinica)H-Index: 81
Abstract Basalts and a mafic dyke collected from the city of Panzhihua show characteristics of high-Ti and low-Ti Emeishan basalts respectively. The dyke yielded a SHRIMP zircon U–Pb mean age of 261 ± 5 Ma making it contemporaneous with the eruption of Emeishan basalts. The basalts have I Sr ranging from 0.7059 to 0.7062 with eNd (T) ranging from −1.1 to + 0.7 whereas the dyke has I Sr ranging from 0.7056 to 0.7064 with eNd (T) ranging from + 0.3 to + 0.5. Trace element modeling shows that the t...
57 CitationsSource
#1J.G. Shellnutt (AS: Academia Sinica)H-Index: 8
#2Bor-ming Jahn (AS: Academia Sinica)H-Index: 81
Last.J. Dostal (Saint Mary's University)H-Index: 33
view all 3 authors...
Abstract Microgranular enclaves are common within intermediate to felsic granitic rocks that have I- and S-type affinity however they are rare within alkaline anorogenic granitoids of A-type affinity. The Permian (~ 260 Ma) Emeishan large igneous province (ELIP) of southwest China contains two peralkaline silica saturated A-type granitic plutons that host microgranular enclaves. The enclaves from the Baima pluton are intermediate in composition and have lower SiO 2 and higher TiO 2 , CaO and Mg#...
57 CitationsSource
#1M.E. Brookfield (AS: Academia Sinica)H-Index: 2
#2J.G. Shellnutt (AS: Academia Sinica)H-Index: 8
Last.Paul B. Wignall (University of Leeds)H-Index: 58
view all 6 authors...
Abstract The end Permian marks the greatest extinction in the geological record, but there is no consensus on whether it was caused by terrestrial or extraterrestrial factors. Platinum group elements (PGE) can readily separate extraterrestrial from terrestrial sources and the few studies so far (from China and Europe) indicate terrestrial sources for the PGE. We report here detailed PGE analyses of two expanded sections from the late Permian northern and southern hemispheres that allow separate ...
16 CitationsSource
#1J.G. Shellnutt (AS: Academia Sinica)H-Index: 8
#2Bor-ming Jahn (AS: Academia Sinica)H-Index: 81
The Late Permian (260 Ma) Emeishan large igneous province of SW China contains numerous magmatic Fe–Ti oxide deposits. The Fe–Ti oxide deposits occur in the lower parts of evolved layered gabbroic intrusions which are spatially and temporally associated with A-type granitic rocks. The 260 Ma Panzhihua layered gabbroic intrusion hosts one of the largest magmatic Fe–Ti oxide deposits in China and is coeval with a peralkaline A-type granitic pluton. The granite has intruded the overlying Emeishan f...
72 CitationsSource
#1Georg F. ZellmerH-Index: 24
#2J.G. ShellnuttH-Index: 8
1 Citations
#1J.G. ShellnuttH-Index: 8
#2B. R. JahnH-Index: 1
5 Citations
#1Georg F. ZellmerH-Index: 24
#2J.G. ShellnuttH-Index: 8
1 Citations
5 CitationsSource
12