Mountain stream sand, Entenlochklamm, Germany/Austria
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Entenlochklamm | Macro |
Location |
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Entenlochklamm, Chiemgau Alps, Germany/Austria | |
Depositional facies |
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Mountain stream, gorge; highly variable flow conditions and short transport | |
Provenance |
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Orogenic; sediments and metasediments of the eastern alps (Kössener Becken/Schichten) |
Composition |
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SRFs (partly low grade metamorphic overprinted) → clay shales/shists (phyllite), limestones (packstones with fragments of fossiles), dolomite, marl, chert; |
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PRFs (also low grade metamorphic overprinted) → monocrystalline quartz, plagioclase, hornblende, chlorite | |
Texture | Immature, very poorly sorted, subrounded, bright and dark grey, reddish, medium to coarse sand (250 to 1250 μm) |
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Petrographic thin section:
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Description |
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Metasedimentary provenance of coarse crystalline, almost marble like limestones, clay bearing shaly marl, monocrystalline quartz, quartz bearing plutonic rock fragments, metalitharenite with high mica content and compact mudstones |
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Texture:
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Texture of the grains, ecc.
Bright field | Dark field |
Sample number | heubeck0028 | ||||
Collector | Christoph Heubeck, Institut für Geologische Wissenschaften, FU Berlin | ||||
Sample number | Collector | Date of sampling | 2002 |
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Comments:
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Comments:
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Die Entenlochklamm wird von der Tiroler Ache durchflossen, die den „Kaiserwinkel" im nördlichen Vorland des Kaisergebirges (genauer des Zahmen Kaisers) entwässert. Dort stehen deformierte und leicht metamorphisierte klastisch-karbonatische Gesteine der triassischen Kössener Schichten an. Probenpunkt an einer schmalen, hochgelegenen, ca. 50 m langen Sandbank am stromabwärtigen Ende der Klamm.
Additional data pageFurther comments on the sand, depositional history, ecc.
