Eolian sand, Zuun mod Elstei, Mongolia
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Sampling area | Glass bead is 200 µ in diameter |
Location: | Zuun mod Elstei, 50 km east of Ulaanbaatar, Mongolia; E 107°28'55.1"; N 47°47'27.5" |
Depositional facies: | replace this with text about the dep facies |
Provenance: | Mix of (1) granitoid plutonic rocks and (2) low-medium-grade metasedimentary (schist, marble) and possibly metavolcanic rocks |
Composition: | Mix of translucent - transparent quartz with pink feldspar, white marble and grey-green low-grade metamorphic rocks (schists); possibly also higher-grade metamorphic rocks involved. Few heavy minerals, including garnets |
Texture: | Characteristic eolian texture: Medium grained (mL-MU; mean ca. 350 µ), well sorted, depending on mineralogy poorly to well rounded. Characteristic polished, matted ("frosted") grain surfaces typical of eolian transport |
Petrographic thin section:
Description: | insert here short description of thin section |
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Bright field |
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Sample number | heubeck0142 |
Collector | Dr. Ochirbat Batkhishig, Institute of Geography, Mongolian Academy of Sciences, Mongolia |
Date of sampling | January, 2008 |
Comments:
Characteristic eolian texture: Medium grained (mL-MU; mean ca. 350 µ), well sorted, depending on mineralogy poorly to well rounded. Characteristic polished, matted ("frosted") grain surfaces typical of eolian transport