- volcanic ash soil
- 火山灰土
English-Chinese Dictionary of Agriculture (英汉农业大词典). 2013.
volcanic ash soil
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Volcanic ash — consists of small tephra, which are bits of pulverized rock and glass created by volcanic eruptions,United States Geological Survey. [http://volcanoes.usgs.gov/Hazards/What/Tephra/tephra.html Tephra: Volcanic Rock and Glass Fragments.] Retrieved… … Wikipedia
Soil horizon — Soil samples illustrating horizons (subsoil on right) A soil horizon is a specific layer in the land area that is parallel to the soil surface and possesses physical characteristics which differ from the layers above and beneath … Wikipedia
soil — soil1 soilless, adj. /soyl/, n. 1. the portion of the earth s surface consisting of disintegrated rock and humus. 2. a particular kind of earth: sandy soil. 3. the ground as producing vegetation or as cultivated for its crops: fertile soil. 4. a… … Universalium
Soil — For other uses, see Soil (disambiguation). A represents soil; B represents laterite, a regolith; C represents saprolite, a less weathered regolith; the bottommost layer represents bedrock … Wikipedia
volcanic — adj. Volcanic is used with these nouns: ↑activity, ↑ash, ↑crater, ↑debris, ↑eruption, ↑explosion, ↑island, ↑mountain, ↑rock, ↑soil, ↑vent … Collocations dictionary
Geology of the Lassen volcanic area — The geology of the Lassen volcanic area presents a record of sedimentation and volcanic activity in the area in and around Lassen Volcanic National Park in Northern California, U.S.. The park is located in the southernmost part of the Cascade… … Wikipedia
Mount Edziza volcanic complex — Mount Edziza, one of the main volcanoes of the Mount Edziza volcanic complex Elevation … Wikipedia
Fly ash — Photomicrograph made with a Scanning Electron Microscope (SEM): Fly ash particles at 2,000x magnification Fly ash is one of the residues generated in combustion, and comprises the fine particles that rise with the flue gases. Ash which does not… … Wikipedia
Hilo (soil) — Hilo soil is the official state soil of the state of Hawaii. These soils cover about convert|14500|acre|km2 and are considered prime agricultural land. The Hawaiian definition of the word “Hilo” is “first night of the full moon.” Also, the word… … Wikipedia
Threebear (soil) — Threebear soil is the official state soil of the U.S. state of Idaho. ProfileThe Threebear series consists of moderately well drained soils formed in silty sediments with a thick mantle of volcanic ash. These soils are moderately deep to a… … Wikipedia
U.S. Soil Taxonomy — ▪ Table U.S. Soil Taxonomy soil order defining characteristics name derivation percent of Earth s land area* Alfisol moderate leaching; B horizon enriched in clay; humid forest vegetation Pedalfer (C.F. Marbut) 9.77 Andisol… … Universalium
