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Article: Study findings from University of Bern broaden understanding of geology.
- Article from:
- Global Warming Focus
- Article date:
- July 13, 2009
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"The Quaternary development of the Pisco valley in central Peru has been characterized by multiple phases of sediment accumulation and erosion that formed distinct levels of cut-and-fill terraces and alluvial fans," scientists writing in the journal Geology report.
"Luminescence dating shows that they formed in response to at least two different stages of sediment accumulation and erosion during the past 60 ka, the main phase of sediment aggradation occurring between ca. 54 and 38 ka ago. The ages show that sediment accumulation was contemporaneous with the time intervals of the Minchin (47.8-36 ka ago, with enhanced precipitation beginning ca. 54.8 ka ago) and ...