Sedimentary exhalative (SEDEX) deposits are typically tabular bodies composed predominantly of Zn, Pb and Ag bound in sphalerite and galena that occur interbedded with iron sulphides and basinal sedimentary rocks, and that were deposited on the seafloor and in associated sub-seafloor vent complexes from hydrothermal fluids vented into mostly reduced sedimentary basins in continental rifts.
Source: Geological Association of Canada, Mineral Deposits Division, Special Publication no. 5, p. 163-183.
Geological keywords, such as “granite”, “lake”. The definitions are generally taken from the AGI Glossary of Geology. Keywords with a geographic context (e.g. Cape Smith Fold Belt, Selwyn Basin, Grenville Province) are assigned to a separate category.
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