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In situ weathering coatings pseudomorphosed after mica




ID # 211

In situ weathering coatings pseudomorphosed after mica
From the Soil Micromorphology Slide Collection

STEM Standard addressed: ESS2E - Biogeology


Appropriate Grade Level(s)
  • College-level
Materials are best used for
  • Classroom Lectures
  • Laboratory Activities
General Course Areas
  • Soil Microbiology
Description
Data for the horizon
Horizon sampled: B22t
Depth sampled: Greater than 70 cm Macromorphological description of horizon: 2.5 YR 3/6 (moist), 2.5 YR 3/6 (dry) gravelly clay; strong coarse prismatic structure
Micromorphological description of horizon: See references

Data for thin section
Preparation of sample: Air dry
Impregnating medium: Polyester resin
Thickness of section: 25 µm
Orientation of section: Vertical

Soil Classification
U.S.: Typic Rhodoxeralf

Elevation: 105 m
Topography and hill slope position: Moderately steep slope
Parent material: Mixture of schists and limestone Vegetation: Poor pasture

Method
Data for 35-mm slide
Frame length: 1 mm
Light mode: Cross polarized

References
Mermut, A. and Th. Pape. 1 971 . Micromorphology of two soils from Turkey with special reference to in-situ formation of clay cutans. Geoderma 5:271 -281 .
Mermut, A. and Th. Pape. 1973. Leitz Scientific and Technical Information, Vol. Il, no. 5. p. 147150.
Source - A. R. Mermut.

Slide CT22. Soil Science Society of America, 1993. A Reference Slide Collection for Soil Micromorphology. SSSA, Madison, WI.

Peer Review: Yes

Credit this item to: SSSA
Media Date: 1993-01-01
Provided By: (SSSA) Soil Science Society of America

Latitude: 38.128373
Longitude: 27.675208999999995

Author(s)/Creator(s)

  • * Soil Science Society of America
    SSSA

Submitted By: (SSSA) Soil Science Society of America


Keywords

  • Coatings
  • B22t horizon
  • micromorphology
  • In situ weathering

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