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Boundary

Release date:2017-07-26  Browse times:1085
    岩石地层单位的界线划在岩性空变处,但也可以人为地放在渐变带内。无论在纵向上还是横向上,界线的确定都应清楚地体现岩石的变化。
   岩石地层单位的界线经常斜切时间面或化石带的界线或其他地层单位的界线。

 
Key word: 界线 地层单位
 
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