Wiki source code of Bodem types (ISO 14688)
Last modified by Roelof Zwaan on 2022/01/12 16:30
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| 9 | This article describes the soil types used in the description of soil profiles within the european ISO 14688 norm. In the Netherlands, this norm is used with slight adjustments and called the NEN-EN-ISO-14688. | ||
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| 13 | = Soil into fractions = | ||
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| 15 | Within the ISO14688 soil consists of several fractions. The primary fraction (which is the most prevalent soil type within the current soil layer), and possible secondary or even tertiary fractions. | ||
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| 17 | = Soil types = | ||
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| 19 | The distinction between soil types is almost entirely decided by the grain size of the individual particles in the soil for all non-organic constituents. The organic soil type depends on the level of decomposition of the soil. The ISO 14688 contains the following soil types: | ||
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| 22 | |(% style="width:248px" %)Soil catergory|(% style="width:234px" %)Soil type|Grain fraction | ||
| 23 | |(% style="width:248px" %)Very coarse soil|(% style="width:234px" %)[[Large boulder>>doc:Environmental Surveys.Rock types.Sedimenten.Large boulders.WebHome]]|>630 mm | ||
| 24 | |(% style="width:248px" %) |(% style="width:234px" %)[[Boulder>>doc:Environmental Surveys.Rock types.Sedimenten.Boulders.WebHome]]|200 - 630 mm | ||
| 25 | |(% style="width:248px" %) |(% style="width:234px" %)[[Cobble >>doc:Environmental Surveys.Rock types.Sedimenten.Pebbles.WebHome]]|63 - 200 mm | ||
| 26 | |(% style="width:248px" %)Coarse soil|(% style="width:234px" %)[[Gravel>>doc:Environmental Surveys.Rock types.Sedimenten.Gravel.WebHome]]|2 - 63 mm | ||
| 27 | |(% style="width:248px" %) |(% style="width:234px" %)[[Sand>>doc:Environmental Surveys.Rock types.Sedimenten.Sand.WebHome]]|0,063 - 2 mm | ||
| 28 | |(% style="width:248px" %)Fine soil|(% style="width:234px" %)[[Silt>>doc:Environmental Surveys.Rock types.Sedimenten.Silt.WebHome]]|0,002 - 0,063 mm | ||
| 29 | |(% style="width:248px" %) |(% style="width:234px" %)[[Clay>>doc:Environmental Surveys.Rock types.Sedimenten.Clay.WebHome]]|<0,002 | ||
| 30 | |(% style="width:248px" %)Organic soil|(% style="width:234px" %)[[Peat>>doc:Environmental Surveys.Organic depositions.Peat.WebHome]]|N/a | ||
| 31 | |(% style="width:248px" %) |(% style="width:234px" %)[[Gyttja>>doc:Environmental Surveys.Organic depositions.Gyttja.WebHome]]|N/a | ||
| 32 | |(% style="width:248px" %) |(% style="width:234px" %)[[Topsoil>>doc:Environmental Surveys.Organic depositions.Humus.WebHome]]|N/a | ||
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| 35 | These individual soiltypes are described more in depth on their own respective pages; You can click a soiltype in the table to navigate to the correct page, which contains a short overview and image. | ||
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| 37 | == Gradations == | ||
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| 39 | Of Sand and Gravel, the gradations can be described as well, these come in three categories: Fine, medium and coarse. These gradations exist for silt as well, but this is too small to be determined by hand and must be done within a lab if described. | ||
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| 41 | == Example descriptions == | ||
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| 43 | The main fraction is given as a noun, while the secundary and tertiary fractions are given as adjectives or added after the main fraction in a 'With x' statement. Some examples include: | ||
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| 45 | -Sandy gravel | ||
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| 47 | -Coarse sandy fine gravel | ||
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| 49 | -Medium sandy silt | ||
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| 51 | -Fine gravelly silty coarse Sand | ||
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| 53 | = References = | ||
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| 55 | * ISO 14688 | ||
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| 62 | **Contents** | ||
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| 64 | {{toc/}} | ||
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