euxinic


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euxinic

[yük′sin·ik]
(hydrology)
Of or pertaining to an environment of restricted circulation and stagnant or anaerobic conditions.
References in periodicals archive ?
Some of these elements (Mo, Cr, U, As) are redox-sensitive trace elements that indicate anoxic to euxinic conditions under which organic matter is deposited (Tribovillard et al.
The pyrite and organic sulfur from euxinic environment as recorded in samples GZ17 and GZ18 show lighter sulfur isotopes than from noneuxinic environment from overlying Longtan Fm (samples 10-VI-40 and 10-VI-56) at the Huayinshan area.
(2004) Further evidence for the development of photiczone euxinic conditions during Mesozoic oceanic anoxic events.
The abundance of fine crystalline pyrite in phosphatic pellets and shale intraclasts indicate deposition from an euxinic (anoxic and sulfidic) water column [30] and hence reducing depositional environment.
Hatch and Leventhal (1992) compared V/V+Ni ratios to other geochemical redox indicators, including degree of pyritisation, and suggested that ratios greater than 0.84 showed euxinic conditions, 0.54-0.82 anoxic water and 0.46-0.60 for dysoxic conditions.
This type of climate, the so-called euxinic Beech-fir-forest climate, is primarily responsible for the occurrence of Colchic deciduous wet forests (Frey & Kurschner 1989, Kikvidze & Oshawa 2001).
1b), which receives poor water circulation because of a flow separation from a sharp change in water depth (Allen 1994), shows some enrichment in sulfur and plots more towards the euxinic field (highly reducing, oxygen-depleted systems; Fig.
Silurian rocks are mainly represented by black oil shale with varying amounts of organic matter: this appears to be a homogeneous unit deposited under euxinic conditions.
Further evidence for the development of photic-zone euxinic conditions during Mesozoic oceanic anoxic events.
The syngenetic hypothesis postulates that sulfur precipitated in euxinic (stagnant, anerobic) sea basins having extremely limited inflow of fresh water.
At the eastern end of the Black Sea and the south of the Caspian Sea, there are evergreen broadleaf forests, the Euxinic and Hyrcanian forests (see map).