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cyclothem

n. [地质] 旋回层；[地质] 韵律层；周期沉积

1、[地质]旋回层

...less和Weller（1932）进一步强调这些旋回性的广泛的横向连续性及其在地层对比上的实用价值，正式提出“旋回层” （Cyclothem）一词，并将其归因于地壳运动引起的海侵一海退。

2、[地质]韵律层

...Cyclosporites 辐脊孢属cyclothem 旋回层；韵律层cyclothemic deposition 韵律沉积 ...

3、周期沈积

... 圆口纲 Cyclostomata 周期沈积 cyclothem 循回沈积〔作用〕 cyclotheric sedimentation ...

4、节奏层

...节奏步 time step节奏层 cyclothem节奏的 cadential; rhythmical ...

standard cyclothem标准轮回沈积

ideal cyclothem理想旋回层

cyclothem m旋回层

model cyclothem模式旋回层

Lofer cyclothem洛菲尔旋回层

positive cyclothem正旋回

geological cyclothem bodies地质旋回体

complex cyclothem recombination复杂韵律层重组

地球科学

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