Geology and lithogeochemistry of hydrothermal mudstones from the upper block near the Duck Pond volcanogenic massive sulfide (VMS) deposit, Newfoundland, Canada: evidence for low-temperature venting into oxygenated mid-Cambrian seawater
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DOI: 10.1007/s00126-018-0795-3
Abstract: Pyrite- and pyrrhotite-rich mudstones are spatially associated with Cambrian (~ 512–509 Ma) volcanogenic massive sulfide (VMS) deposits throughout the Tally Pond group, central Newfoundland, Canada. At the Duck Pond mine, sulfide-rich mudstones are hosted within a weakly… read more here.
Keywords: upper block; sulfide; geology; cambrian seawater ... See more keywords
Graded identities and isomorphisms on algebras of upper block-triangular matrices
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DOI: 10.1016/j.jalgebra.2018.12.019
Abstract: Let $G$ be an abelian group and $\mathbb{K}$ an algebraically closed field of characteristic zero. A. Valenti and M. Zaicev described the $G$-gradings on upper block-triangular matrix algebras provided that $G$ is finite. We prove… read more here.
Keywords: matrix; graded identities; upper block; block triangular ... See more keywords