Abstract
Background gold levels have been estimated in Archean-Proterozoic metavolcanites. The Archean protovolcanites show the maximal spread in regional mean Au levels, with a tendency for the values to fall from the ultrabasic-basic varieties to the acid ones. The Proterozoic metavolcanites show a more compact distribution, no matter what the basicity or acidity. Regional low-grade metamorphism (greenstone regeneration) has not had a substantial effect on the distribution of gold in ancient greenstone-belt magmatites. Only metasomatism occurring at various times has assured gold migration and accumulation in the metasomatic columns, Ka of 0.2-0.9 and 2.3-320. the sources of such solutions were plutonic magmatic sites, namely, zones of andesite-magma generation in asthenoliths. -Journal summary
| Original language | English |
|---|---|
| Pages (from-to) | 29-37 |
| Number of pages | 9 |
| Journal | Geochemistry International |
| Volume | 28 |
| Issue number | 9 |
| Publication status | Published - 1991 |
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ASJC Scopus subject areas
- Geochemistry and Petrology
- Geophysics
Cite this
Background Au levels in ancient greenstone belts. / Korobeynikov, A. F.
In: Geochemistry International, Vol. 28, No. 9, 1991, p. 29-37.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Background Au levels in ancient greenstone belts
AU - Korobeynikov, A. F.
PY - 1991
Y1 - 1991
N2 - Background gold levels have been estimated in Archean-Proterozoic metavolcanites. The Archean protovolcanites show the maximal spread in regional mean Au levels, with a tendency for the values to fall from the ultrabasic-basic varieties to the acid ones. The Proterozoic metavolcanites show a more compact distribution, no matter what the basicity or acidity. Regional low-grade metamorphism (greenstone regeneration) has not had a substantial effect on the distribution of gold in ancient greenstone-belt magmatites. Only metasomatism occurring at various times has assured gold migration and accumulation in the metasomatic columns, Ka of 0.2-0.9 and 2.3-320. the sources of such solutions were plutonic magmatic sites, namely, zones of andesite-magma generation in asthenoliths. -Journal summary
AB - Background gold levels have been estimated in Archean-Proterozoic metavolcanites. The Archean protovolcanites show the maximal spread in regional mean Au levels, with a tendency for the values to fall from the ultrabasic-basic varieties to the acid ones. The Proterozoic metavolcanites show a more compact distribution, no matter what the basicity or acidity. Regional low-grade metamorphism (greenstone regeneration) has not had a substantial effect on the distribution of gold in ancient greenstone-belt magmatites. Only metasomatism occurring at various times has assured gold migration and accumulation in the metasomatic columns, Ka of 0.2-0.9 and 2.3-320. the sources of such solutions were plutonic magmatic sites, namely, zones of andesite-magma generation in asthenoliths. -Journal summary
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UR - http://www.scopus.com/inward/citedby.url?scp=0026278786&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:0026278786
VL - 28
SP - 29
EP - 37
JO - Geochemistry International
JF - Geochemistry International
SN - 0016-7029
IS - 9
ER -