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DOI | 10.1130/B35269.1 |
Dendrochronological dating of landslides in western Oregon: Searching for signals of the Cascadia AD 1700 earthquake | |
Struble, William T.1; Roering, Josh J.1; Black, Bryan A.2; Burns, William J.3; Calhoun, Nancy3; Wetherell, Logan4 | |
2020-07-01 | |
发表期刊 | GEOLOGICAL SOCIETY OF AMERICA BULLETIN |
ISSN | 0016-7606 |
EISSN | 1943-2674 |
出版年 | 2020 |
卷号 | 132期号:7-8页码:1775-1791 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Large-magnitude earthquakes and hydrologic events in mountainous settings commonly trigger thousands of landslides, and slope failures typically constitute a significant proportion of the damage associated with these events. Large, dormant deep-seated landslides are ubiquitous in the Oregon Coast Range, western United States, yet a method for calculating landslide ages with the precision required to diagnose a specific triggering event, including the A.D. 1700 Cascadia earthquake, has remained elusive. Establishing a compelling connection between prehistoric slope instability and specific triggers requires landslide ages with precision greater than that provided by C-14 dating of detrital materials. Tree-ring analysis is the only known method capable of determining landslide age with this precision. Dozens of landslide-dammed lakes in western Oregon present an opportunity to use tree rings from drowned snags, or "ghost forests," to establish the year of death, and thus landsliding. We cross-dated tree-ring indices from drowned Douglas fir trees with live tree-ring records from the Oregon Coast Range that exhibit synchronous, time-specific patterns due to regional climate variations. Our analyses determined that the landslides responsible for creating Wasson and Klickitat Lakes occurred in A.D. 1819 and 1751, respectively. The C-14 dates from selected tree rings and landslide deposit detritus are consistent with our tree-ring analysis, although the ages exhibit high variability, revealing the limitations of using C-14 dating alone. Because dendrochronology provides annual precision for landsliding, sampling of tree rings at additional landslide-dammed lakes throughout the Oregon Coast Range can be used to constrain the potential effects of ground motion and major storms on Cascadia landscapes. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000545115400024 |
WOS关键词 | BAND SYNTHETIC SEISMOGRAMS ; MAGNITUDE 9 EARTHQUAKES ; AGE CALIBRATION CURVES ; FORE-ARC ; COAST RANGE ; SEDIMENT PRODUCTION ; EROSION RATES ; STOCHASTIC SYNTHETICS ; LANDSCAPE EVOLUTION ; GORKHA EARTHQUAKE |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/289438 |
专题 | 地球科学 |
作者单位 | 1.Univ Oregon, Dept Earth Sci, Eugene, OR 97403 USA; 2.Univ Arizona, Lab Tree Ring Res, 1215 E Lowell St, Tucson, AZ 85721 USA; 3.Oregon Dept Geol & Mineral Ind, 800 NE Oregon St, Portland, OR 97232 USA; 4.Cent Washington Univ, Dept Geol Sci, 400 E Univ Way, Ellensburg, WA 98926 USA |
推荐引用方式 GB/T 7714 | Struble, William T.,Roering, Josh J.,Black, Bryan A.,et al. Dendrochronological dating of landslides in western Oregon: Searching for signals of the Cascadia AD 1700 earthquake[J]. GEOLOGICAL SOCIETY OF AMERICA BULLETIN,2020,132(7-8):1775-1791. |
APA | Struble, William T.,Roering, Josh J.,Black, Bryan A.,Burns, William J.,Calhoun, Nancy,&Wetherell, Logan.(2020).Dendrochronological dating of landslides in western Oregon: Searching for signals of the Cascadia AD 1700 earthquake.GEOLOGICAL SOCIETY OF AMERICA BULLETIN,132(7-8),1775-1791. |
MLA | Struble, William T.,et al."Dendrochronological dating of landslides in western Oregon: Searching for signals of the Cascadia AD 1700 earthquake".GEOLOGICAL SOCIETY OF AMERICA BULLETIN 132.7-8(2020):1775-1791. |
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