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Time Not Our Time: Physical Controls on the Preservation and Measurement of Geologic Time
Annual Review of Earth and Planetary Sciences ( IF 11.3 ) Pub Date : 2018-05-30 , DOI: 10.1146/annurev-earth-082517-010129
Chris Paola 1, 2 , Vamsi Ganti 3 , David Mohrig 4 , Anthony C. Runkel 5 , Kyle M. Straub 6
Affiliation  

Sadler’s (1981) analysis of how measured sedimentation rate decreases with timescale of measurement quantified the vanishingly small fractional time preservation—completeness—of the stratigraphic record. Generalized numerical models have shown that the Sadler effect can be recovered, through the action of erosional clipping and time removal (the “stratigraphic filter”), from even fairly simple topographic sequences. However, several lines of evidence suggest that most of the missing time has not been eroded out but rather represents periods of inactivity or stasis. Low temporal completeness could also imply that the stratigraphic record is dominated by rare, extreme events, but paleotransport estimates suggest that this is not generally the case: The stratigraphic record is strangely ordinary. It appears that the organization of the topography into a hierarchy of forms also organizes the deposition into concentrated events that tend to preserve relatively ordinary conditions, albeit for very short interva...

中文翻译:

时间不是我们的时间:对地质时间保存和测量的物理控制

Sadler (1981) 对测量的沉降速率如何随测量时间尺度降低的分析量化了地层记录的极小部分时间保存——完整性。广义数值模型表明,即使是相当简单的地形序列,也可以通过侵蚀剪切和时间去除(“地层过滤器”)的作用来恢复萨德勒效应。然而,一些证据表明,大部分缺失的时间并没有被侵蚀,而是代表了不活动或停滞的时期。低时间完整性也可能意味着地层记录受罕见的极端事件支配,但古运输估计表明情况并非如此:地层记录异常普通。
更新日期:2018-05-30
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