Details
| Original language | English |
|---|---|
| Pages (from-to) | 153-172 |
| Number of pages | 20 |
| Journal | Neues Jahrbuch fur Mineralogie, Abhandlungen |
| Volume | 178 |
| Issue number | 2 |
| Publication status | Published - 14 Mar 2002 |
Abstract
Detrital and metamorphic minerals occur in the feldspar-rich quartzites occurring in the eastern cover of the Žulová granitic pluton (northern part of the Moravo-Silesian Zone of the Bohemian Massif). The detrital minerals comprise quartz, K-feldspar, plagioclase (An 23-48) and scarce biotite. The metamorphic mineral assemblage consists of albitic plagioclase, pumpellyite, actinolite/ferroactinolite, clinozoisite, chlorite, muscovite, titanite, graphite and optically isotropic "allophane" representing chemically a mixture of silica, alumina and iron oxides/hydroxides. The crushing of detrital plagioclase grains triggered their decomposition into pumpellyite, clinozoisite, albitic plagioclase and, in places, muscovite. The plagioclase decomposition products are associated with actinolite/ferroactinolite and chlorite. The metamorphic mineral assemblage indicates sub-greenschist pumpellyite-actinolite facies; rocks belonging to this facies were not described up to now from the Moravo-Silesian Zone. The pumpellyite-actinolite metamorphism was of prograde character with pressure probably exceeding 4 kbar.
Keywords
- East Sudetes, Moravo-Silesian Zone, Pumpellyite-actinolite facies, Quartzite
ASJC Scopus subject areas
- Earth and Planetary Sciences(all)
- Geochemistry and Petrology
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In: Neues Jahrbuch fur Mineralogie, Abhandlungen, Vol. 178, No. 2, 14.03.2002, p. 153-172.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Pumpellyite-actinolite facies quartzites from the eastern cover of the Žulová pluton (NE Bohemian Massif)
AU - Puziewicz, Jacek
AU - Olejniczak, Kamilla
AU - Koepke, Jürgen
PY - 2002/3/14
Y1 - 2002/3/14
N2 - Detrital and metamorphic minerals occur in the feldspar-rich quartzites occurring in the eastern cover of the Žulová granitic pluton (northern part of the Moravo-Silesian Zone of the Bohemian Massif). The detrital minerals comprise quartz, K-feldspar, plagioclase (An 23-48) and scarce biotite. The metamorphic mineral assemblage consists of albitic plagioclase, pumpellyite, actinolite/ferroactinolite, clinozoisite, chlorite, muscovite, titanite, graphite and optically isotropic "allophane" representing chemically a mixture of silica, alumina and iron oxides/hydroxides. The crushing of detrital plagioclase grains triggered their decomposition into pumpellyite, clinozoisite, albitic plagioclase and, in places, muscovite. The plagioclase decomposition products are associated with actinolite/ferroactinolite and chlorite. The metamorphic mineral assemblage indicates sub-greenschist pumpellyite-actinolite facies; rocks belonging to this facies were not described up to now from the Moravo-Silesian Zone. The pumpellyite-actinolite metamorphism was of prograde character with pressure probably exceeding 4 kbar.
AB - Detrital and metamorphic minerals occur in the feldspar-rich quartzites occurring in the eastern cover of the Žulová granitic pluton (northern part of the Moravo-Silesian Zone of the Bohemian Massif). The detrital minerals comprise quartz, K-feldspar, plagioclase (An 23-48) and scarce biotite. The metamorphic mineral assemblage consists of albitic plagioclase, pumpellyite, actinolite/ferroactinolite, clinozoisite, chlorite, muscovite, titanite, graphite and optically isotropic "allophane" representing chemically a mixture of silica, alumina and iron oxides/hydroxides. The crushing of detrital plagioclase grains triggered their decomposition into pumpellyite, clinozoisite, albitic plagioclase and, in places, muscovite. The plagioclase decomposition products are associated with actinolite/ferroactinolite and chlorite. The metamorphic mineral assemblage indicates sub-greenschist pumpellyite-actinolite facies; rocks belonging to this facies were not described up to now from the Moravo-Silesian Zone. The pumpellyite-actinolite metamorphism was of prograde character with pressure probably exceeding 4 kbar.
KW - East Sudetes
KW - Moravo-Silesian Zone
KW - Pumpellyite-actinolite facies
KW - Quartzite
UR - http://www.scopus.com/inward/record.url?scp=0141460790&partnerID=8YFLogxK
U2 - 10.1127/0077-7757/2003/0178-0153
DO - 10.1127/0077-7757/2003/0178-0153
M3 - Article
AN - SCOPUS:0141460790
VL - 178
SP - 153
EP - 172
JO - Neues Jahrbuch fur Mineralogie, Abhandlungen
JF - Neues Jahrbuch fur Mineralogie, Abhandlungen
SN - 0077-7757
IS - 2
ER -