Recent progress in landslide dating

Pánek, Tomáš

doi:10.1177/0309133314550671

Cited by 122 publications

(43 citation statements)

References 203 publications

(257 reference statements)

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“…However, many landslides likely remobilized older landslide deposits, and furthermore, we do not know definitively whether they occurred as rapid, discrete events or instead actively deformed at slower rates, or in multiple stages, possibly over millennia. If a landslide creeps or is intermittently active for a period of time prior to a large, rapid failure, radiocarbon dating of organic material found in the deposit should be considered a maximum age for the main event [ Panek , ], while surface roughness would likely reflect the most recent event. If a landslide continues to creep or intermittently reactivate after a large, rapid failure, it may incorporate fresh organic material, with radiocarbon ages that postdate the large event, and surface roughness would again likely reflect the most recent phase of active movement.…”

Section: Discussionmentioning

confidence: 99%

“…Radiocarbon dating of organic material from within a landslide deposit is the most frequently used technique, but it can be problematic for several reasons. Foremost, dateable material may be absent, and if material is present, it may represent the entrainment of older organic material with ages that predate the landslide event [ Panek , ]. This possibility is especially likely in heavily vegetated areas with abundant dead organic material in the landslide path [ Dufresne et al ., ].…”

Section: Introductionmentioning

confidence: 99%

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Holocene history of deep‐seated landsliding in the North Fork Stillaguamish River valley from surface roughness analysis, radiocarbon dating, and numerical landscape evolution modeling

et al. 2017

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Documenting spatial and temporal patterns of past landsliding is a challenging step in quantifying the effect of landslides on landscape evolution. While landslide inventories can map spatial distributions, lack of dateable material, landslide reactivations, or time, access, and cost constraints generally limit dating large numbers of landslides to analyze temporal patterns. Here we quantify the record of the Holocene history of deep‐seated landsliding along a 25 km stretch of the North Fork Stillaguamish River valley, Washington State, USA, including the 2014 Oso landslide, which killed 43 people. We estimate the ages of more than 200 deep‐seated landslides in glacial sediment by defining an empirical relationship between landslide deposit age from radiocarbon dating and landslide deposit surface roughness. We show that roughness systematically decreases with age as a function of topographic wavelength, consistent with models of disturbance‐driven soil transport. The age‐roughness model predicts a peak in landslide frequency at ~1000 calibrated (cal) years B.P., with very few landslide deposits older than 7000 cal years B.P. or younger than 100 cal years B.P., likely reflecting a combination of preservation bias and a complex history of changing climate, base level, and seismic shaking in the study area. Most recent landslides have occurred where channels actively interact with the toes of hillslopes composed of glacial sediments, suggesting that lateral channel migration is a primary control on the location of large deep‐seated landslides in the valley.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Holocene history of deep‐seated landsliding in the North Fork Stillaguamish River valley from surface roughness analysis, radiocarbon dating, and numerical landscape evolution modeling

et al. 2017

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“…Occasionally, small lakes and bogs have formed due to damming by the landslides or fault scarps, which have caused hydrological changes in the terrain (Adams, 1981;Lagerbäck and Sundh, 2008). To date, radiocarbon dating has been the predominant age determination method for different types of landslides worldwide (Pánek, 2015). To date, radiocarbon dating has been the predominant age determination method for different types of landslides worldwide (Pánek, 2015).…”

Section: Introductionmentioning

confidence: 99%

Dating of paleolandslides in western Finnish Lapland

Ojala

Markovaara‐Koivisto

Middleton

et al. 2018

Earth Surf Processes Landf

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The dating of landslide‐buried organic materials potentially indicates non‐stationary seismicity in northern Finland attributable to the release of lithospheric stresses during and after retreat of the Scandinavian Ice Sheet. The landslide age data reveals three episodes of increased slope instability and formation of landslides, from 9000 to 11 000 cal BP, from 5000 to 6000 cal BP, and from 1000 to 3000 cal BP. While a seismogenic origin cannot be unequivocally established, we interpret that at least the early Holocene episode reflects increased seismic activity in northern Finland in association with late‐glacial and postglacial faulting. The foci of slope instabilities changes through time, implying that different segments of the postglacial fault systems were active at different times during the Holocene. We also show that the correlation of landslide ages with the surface roughness and backwall slope is complicated. The morphology of landslide scarps is significantly affected by thickness of glacial sediments, liquefaction during landslide formation, and accumulation of peat upon landslide scars and deposits, and thus, the time‐dependent erosional smoothing of the surfaces should be considered as descriptive and non‐qualitative. Copyright © 2018 John Wiley & Sons, Ltd.

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“…Unfortunately, establishing this timing is notoriously difficult due to the lack of reliable geochronological tools. Different techniques have been developed with the object of providing a chronology for past rockfall activity (Lang et al, 1999;Panek, 2015). These range from studying the degree of rock-surface weathering (e.g.…”

Section: Introductionmentioning

confidence: 99%

Optical dating of loessic hillslope sediments constrains timing of prehistoric rockfalls, Christchurch, New Zealand

Sohbati

Borella

Murray

et al. 2016

J Quaternary Science

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Developing a robust chronology for mass-movement events is of crucial importance to understanding triggering mechanisms and assessing hazards. We constrain the emplacement time of four palaeorockfall boulders near Christchurch, New Zealand, using optically stimulated luminescence (OSL) of quartz and infrared stimulated luminescence dating (IRSL) of K-feldspar from colluvial loess deposits underlying and upslope of individual boulders. The quartz OSL and K-feldspar pIRIR 290 ages are all consistent with the stratigraphy and in excellent agreement with each other, indicating that all the boulders that overlie the in-situ loess and oldest loess colluvium unit must have been emplaced < 13 ka ago. A comparison of luminescence ages with cosmogenic 3 He surface-exposure ages from the surfaces of each boulder shows that two out of four boulders contain pre-deposition 3 He inheritance.Overall, the optical ages are consistent with both a prehistoric rockfall event at ~8-6 ka and a possible preceding event at ~14-13 ka, although the temporal resolution of the time of emplacement of individual boulders is ca. 3-5 ka. This resolution is not limited by age uncertainties but rather by the stratigraphy. This study is the first to show a successful application of luminescence dating to New

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Recent progress in landslide dating

Cited by 122 publications

References 203 publications

Holocene history of deep‐seated landsliding in the North Fork Stillaguamish River valley from surface roughness analysis, radiocarbon dating, and numerical landscape evolution modeling

Holocene history of deep‐seated landsliding in the North Fork Stillaguamish River valley from surface roughness analysis, radiocarbon dating, and numerical landscape evolution modeling

Dating of paleolandslides in western Finnish Lapland

Optical dating of loessic hillslope sediments constrains timing of prehistoric rockfalls, Christchurch, New Zealand

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