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Geoscience Sedimentology

カード 24枚 作成者: Ray (作成日: 2013/11/01)

  • erosion

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公開範囲:

公開

言語:

  • カード表 : 英語
  • カード裏 : 英語
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  • 1

    erosion

    補足(例文と訳など)

    答え

    • The process by which wind, water, ice, or gravity transports soil and sediment from one location to another

    解説

  • 2

    frost wedging

    補足(例文と訳など)

    答え

    • the mechanical breakup of rock caused by the expansion of freezing water in cracks and crevices

    解説

  • 3

    salt wedging

    補足(例文と訳など)

    答え

    • Salt crystals grow in the cracks (similar to ice crystals); a process found in arid environment where salt crystals grow after water that has gotten on the rock evaportes

    解説

  • 4

    differential weathering

    補足(例文と訳など)

    答え

    • Varying rates of weathering resulting from some rocks in an area being more resistant to weathering than others.

    解説

  • 5

    rockslide

    補足(例文と訳など)

    答え

    • the rapid slide of a mass of rock downslope along planes of weakness

    解説

  • 6

    creep

    補足(例文と訳など)

    答え

    • the slow downhill movement of weathered rock material

    解説

  • 7

    mechanical weathering

    補足(例文と訳など)

    答え

    • The type of weathering in which rock is physically broken into smaller pieces

    解説

  • 8

    slump

    補足(例文と訳など)

    答え

    • occurs when a mass of rock or sediment moves downhill along a curved surface

    解説

  • 9

    ripple marks

    補足(例文と訳など)

    答え

    • small parallel ridges and toughs formed in sediment by wind or water currents and waves, They may then be preserved when the sediment is lithified

    解説

  • 10

    secondary enrichment

    補足(例文と訳など)

    答え

    • the concentration of minor amounts of metals that are scattered through unweathered rock into economically valuable concentrations by weathering processes

    解説

  • 11

    lahar

    補足(例文と訳など)

    答え

    • mudflows on the slopes of volcanoes that result when unstable layers of ash and debris become saturated and flow downslop, usually following stream channels

    解説

  • 12

    chemical weathering

    補足(例文と訳など)

    答え

    • process in which the chemical composition of rocks is changed by agents such as natural acids and oxygen

    解説

  • 13

    cross bedding

    補足(例文と訳など)

    答え

    • depositional feature of sedimentary rock that forms as inclined layers of sediment are carried forward across a horizontal surface

    解説

  • 14

    spheroidal weathering

    補足(例文と訳など)

    答え

    • any weathering process that tends to produce a spherical shape from an initially blocky shape

    解説

  • 15

    talus slope

    補足(例文と訳など)

    答え

    • an accumulation of rock debris at the base of a cliff

    解説

  • 16

    sheeting

    補足(例文と訳など)

    答え

    • a mechanical weathering process characterized by the splitting off of slablike sheets of rock

    解説

  • 17

    solifluction

    補足(例文と訳など)

    答え

    • Slow, downslope flow of water-saturated materials common to permafrost areas.

    解説

  • 18

    flute casts

    補足(例文と訳など)

    答え

    • primary structure formed in sedimentary rock when a log is dragged along the bottom of a river, or rock and sediment in turbidity currents, leaving a u-shaped dent in the river bed or ocean basin

    解説

  • 19

    weathering

    補足(例文と訳など)

    答え

    • the decompocition and disintegration of rocks and minerals at the earth's surface by a mechanical and chemical process

    解説

  • 20

    exfoliation dome

    補足(例文と訳など)

    答え

    • large, dome-shaped structure, usually composed of granite, formed by sheeting

    解説

  • 21

    mass wasting

    補足(例文と訳など)

    答え

    • The movement of land downhill powered by gravity

    解説

  • 22

    graded bedding

    補足(例文と訳など)

    答え

    • depositional feature of sedimentary rock in which particles are progressively heavier and coarser toward the bottom layers of bedding

    解説

  • 23

    permafrost

    補足(例文と訳など)

    答え

    • ground that is permanently frozen

    解説

  • 24

    angle of repose

    補足(例文と訳など)

    答え

    • the steepest angle at which loose material remains stationary without sliding downslope

    解説

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