Evidence supporting Holocene loess in Illinois with new proxy data and historical, regional perspectives on loess deposition in the upper Mississippi River Valley
We thank Grimley et al. (2019) for their constructive comments on our publication on Holocene loess in Illinois revealed by Optically Stimulated Luminescence (OSL) dating (Miao et al., 2018) in the journal Quaternary Science Reviews. Their skepticism on the preservation of Holocene loess in Illinois provides us with a good opportunity to clarify several key issues: pedoturbation (including bioturbation), the methodology of soil research and our OSL dating results. In addition, we will discuss the more fundamental issue behind this debate: what controls loess deposition in the Midwestern USA, direct glacial sediment supply or broader-scale climate change? Finally, we also report new high-resolution grain size, magnetic susceptibility and color data from one of our Holocene loess sites. (C) 2019 Elsevier Ltd. All rights reserved.
1.Linyi Univ, Sch Resource & Environm Sci, Shandong Prov Key Lab Water & Soil Conservat & En, Linyi 276000, Shandong, Peoples R China 2.Qinghai Normal Univ, Qinghai Prov Key Lab Phys Geog & Environm Proc, Xining 810008, Qinghai, Peoples R China 3.Univ Nebraska Lincoln, Sch Nat Resources, Conservat & Survey Div, Lincoln, NE 68583 USA 4.Univ Illinois, Prairie Res Inst, Illinois State Geol Survey, Champaign, IL 61820 USA 5.Appl Geoimaging Solut Inc, Urbana, IL 61801 USA 6.Beijing Normal Univ, Interdisciplinary Res Ctr Earth Sci Frontier, Beijing 100875, Peoples R China 7.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Shaanxi, Peoples R China
Recommended Citation:
Miao, Xiaodong,Hanson, Paul R.,Stohr, Christopher J.,et al. Evidence supporting Holocene loess in Illinois with new proxy data and historical, regional perspectives on loess deposition in the upper Mississippi River Valley[J]. QUATERNARY SCIENCE REVIEWS,2019-01-01,216:119-123