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单词 θ4744
释义
the world > the earth > structure of the earth > structural features > sedimentary formation > [noun] > stratum > position or direction of strata > offlap or onlap (2)
offlap1913

A progressive diminution in the lateral extent of sedimentary deposits in passing upwards from older to younger strata, so that each stratum leaves…

onlap1947

A progressive increase in the lateral extent of conformable strata in passing upwards from older to younger strata, so that each stratum is hidden…

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更新时间:2025/2/24 8:34:06