A Novel Soil Chronometer: Uranium Comminution Ages Measure Soil Production Rates in a Deep Granitic Weathering Profile
文献类型：期刊论文
| 作者 | Ouyang, Shenghui1,4; Li, Le3; Li, Gaojun1,4; Li, Gen K.2 |
| 刊名 | GEOPHYSICAL RESEARCH LETTERS
 |
| 出版日期 | 2026-01-29 |
| 卷号 | 53期号:3页码:11 |
| 关键词 | soil production rate uranium comminution age weathering profile critical zone |
| ISSN号 | 0094-8276 |
| DOI | 10.1029/2025GL119252 |
| 通讯作者 | Li, Le(lile@qdio.ac.cn) |
| 英文摘要 | Soil production, through bedrock weathering, regulates landscape evolution, biogeochemical cycles, and societal sustainability, yet quantifying soil production rates (SPRs) remains difficult due to limited tools. Here, we present a new framework for measuring SPRs based on uranium comminution ages and validate this approach at a deep granitic weathering profile in subtropical South China. Measured (234U/238U) activity ratios increase with depth in soil and remain stable in saprolite. Using a 1D mass-transport model, we resolve a SPR of 2.4 +/- 0.4 m/Ma, which is consistent with independent estimates by U-series and 10Be dating. Set by inherent alpha-recoil processes, uranium comminution ages do not rely on environmental conditions (e.g., lithology and soil thickness) that present challenges to conventional tools such as 10Be. We expect our approach to contribute a tool that could expand measurements of SPRs-a key parameter of Earth surface systems-to broader landscapes where SPR measurements have been limited. |
| WOS关键词 | ALPHA-RECOIL DAMAGE ; U-SERIES NUCLIDES ; ISOTOPIC DISEQUILIBRIUM ; SEDIMENT TRANSPORT ; REGOLITH FORMATION ; TIME ; FRACTIONATION ; DISSOLUTION ; INSIGHTS ; SAMPLES |
| 资助项目 | Taishan Scholar Project of Shandong Province[tsqn202408275] ; Natural Science Foundation of Shandong Province[ZR2024QD106] ; National Science and Technology Major Project of China[2024ZD1001100] ; National Natural Science Foundation of China[42325302] ; National Natural Science Foundation of China[42473067] |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:001703710800001 |
| 出版者 | AMER GEOPHYSICAL UNION |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/204850]  |
| 专题 | 海洋研究所_深海极端环境与生命过程研究中心 |
| 通讯作者 | Li, Le |
| 作者单位 | 1.Nanjing Univ, MOE Key Lab Surficial Geochem, Nanjing, Peoples R China 2.Univ Calif Santa Barbara, Dept Earth Sci, Santa Barbara, CA 93106 USA 3.Chinese Acad Sci, Inst Oceanol, Ctr Deep Sea Res, Qingdao, Peoples R China 4.Nanjing Univ, Frontiers Sci Ctr Crit Earth Mat Cycling, Nanjing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ouyang, Shenghui,Li, Le,Li, Gaojun,et al. A Novel Soil Chronometer: Uranium Comminution Ages Measure Soil Production Rates in a Deep Granitic Weathering Profile[J]. GEOPHYSICAL RESEARCH LETTERS,2026,53(3):11. |
| APA | Ouyang, Shenghui,Li, Le,Li, Gaojun,&Li, Gen K..(2026).A Novel Soil Chronometer: Uranium Comminution Ages Measure Soil Production Rates in a Deep Granitic Weathering Profile.GEOPHYSICAL RESEARCH LETTERS,53(3),11. |
| MLA | Ouyang, Shenghui,et al."A Novel Soil Chronometer: Uranium Comminution Ages Measure Soil Production Rates in a Deep Granitic Weathering Profile".GEOPHYSICAL RESEARCH LETTERS 53.3(2026):11. |
入库方式： OAI收割
来源：海洋研究所
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