PERMAFROST AND PERIGLACIAL FEATURES | Periglacial Fluvial Sediments and Forms

Huissteden, J. van; Vandenberghe, Jef; Gibbard, Philip L.; Lewin, John

doi:10.1016/b978-0-444-53643-3.00108-4

Cited by 12 publications

(7 citation statements)

References 47 publications

(49 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Carbon emission in floodplain environments is fueled by higher ecosystem productivity of floodplains; most of the released fluvial-derived carbon is of recent origin (Dean et al, 2020). However, floodplain subsidence and capture of thaw lakes also creates storage space for burial and sequestration of organic-rich sediments (Emmerton et al, 2007;Van Huissteden et al, 2013;Vonk et al, 2015). In this location a sedimentation rate of organic-rich silt of 0.5 cm year −1 was recorded in a borehole.…”

Section: Carbon Cycle Implicationsmentioning

confidence: 72%

Geomorphology and InSAR-Tracked Surface Displacements in an Ice-Rich Yedoma Landscape

et al. 2021

Self Cite

View full text Add to dashboard Cite

Ice-ridge Yedoma terrain is susceptible to vertical surface displacements by thaw and refreeze of ground ice, and geomorphological processes of mass wasting, erosion and sedimentation. Here we explore the relation between a 3 year data set of InSAR measurements of vertical surface displacements during the thaw season, and geomorphological features in an area in the Indigirka Lowlands, Northeast Siberia. The geomorphology is presented in a geomorphological map, based on interpretation of high resolution visible spectrum satellite imagery, field surveys and available data from paleo-environmental research. The main landforms comprise overlapping drained thaw lake basins and lakes, erosion remnants of Late Pleistocene Yedoma deposits, and a floodplain of a high-sinuosity anastomosing river with ancient river terrace remnants. The spatial distribution of drained thaw lake basins and Yedoma erosion remnants in the study area and its surroundings is influenced by neotectonic movements. The 3 years of InSAR measurement include 2 years of high snowfall and extreme river flooding (2017–2018) and 1 year of modest snowfall, early spring and warm summer (2019). The magnitude of surface displacements varies among the years, and show considerable spatial variation. Distinct spatial clusters of displacement trajectories can be discerned, which relate to geomorphological processes and ground ice conditions. Strong subsidence occurred in particular in 2019. In the wet year of 2017, marked heave occurred at Yedoma plateau surfaces, likely by ice accumulation at the top of the permafrost driven by excess precipitation. The spatial variability of surface displacements is high. This is explored by statistical analysis, and is attributed to the interaction of various processes. Next to ground ice volume change, also sedimentation (peat, colluvial deposition) and shrinkage or swelling of soils with changing water content may have contributed. Tussock tundra areas covered by the extreme 2017 and 2018 spring floods show high subsidence rates and an increase of midsummer thaw depths. We hypothesize that increased flood heights along Siberian lowland rivers potentially induce deeper thaw and subsidence on floodplain margins, and also lowers the drainage thresholds of thaw lakes. Both mechanisms tend to increase floodplain area. This may increase CH4 emission from floodplains, but also may enhance carbon storage in floodplain sedimentary environments.

show abstract

Section: Carbon Cycle Implicationsmentioning

confidence: 72%

Geomorphology and InSAR-Tracked Surface Displacements in an Ice-Rich Yedoma Landscape

et al. 2021

Self Cite

View full text Add to dashboard Cite

show abstract

“…Fluvial deposition at Fordwich is interpreted as having occurred during cold climatic periods with high-energy fluvial activity, potentially in a braided river system. Indeed, braided gravel-bed rivers point to periglacial climates in NW Europe, as does evidence of substantial gravel supply and deposition [24,[55][56][57]. In combination with the abraded nature of many of the lithic tools we interpret the artefacts as having most likely been discarded by hominins during MIS 15.…”

Section: Infrared-radiofluorescence Resultsmentioning

confidence: 97%

On the earliest Acheulean in Britain: first dates and in-situ artefacts from the MIS 15 site of Fordwich (Kent, UK)

et al. 2022

View full text Add to dashboard Cite

Northern Europe experienced cycles of hominin habitation and absence during the Middle Pleistocene. Fluvial gravel terrace sites in the east of Britain and north of France provide a majority of the data contributing to this understanding, mostly through the presence or absence of stone-tool artefacts. To date, however, relatively few sites have been radiometrically dated, and many have not been excavated in modern times, leading to an over-reliance on selectively sampled and poorly dated lithic assemblages. This includes Fordwich (Kent, UK), where over 330 bifaces were discovered through industrial quarrying in the 1920s. Here, we present the first excavation and dating of artefacts discovered in situ at Fordwich, alongside their technological analysis and relationship to those previously recovered. The site is demonstrated to retain deposits of Lower Palaeolithic artefacts, with 251 flakes, scrapers and cores identified to date. Infrared-radiofluorescence (IR-RF) dating of feldspar reveals 112 artefacts to have come from levels dating to at least 570 ± 36 to 513 ± 30 thousand years ago (ka) and are most plausibly assigned to an MIS 14 deposition, with artefacts produced during MIS 15 (approx. 560–620 ka). Indeed, these IR-RF samples provide minimum ages for artefacts. Combined with evidence from exposures linked to the original quarrying activities, a similar MIS 15 age is suggested for the more than 330 handaxe artefacts discovered in the 1920s. The remaining excavated artefacts come from levels dated to between 347 ± 22 and 385 ± 21 ka (MIS 10 or 11), with this later age interpreted to reflect post-MIS 14 deposition by substrate gullying and solifluction. These data demonstrate Fordwich to be one of the earliest Palaeolithic sites in northwestern Europe, and to retain the only large Acheulean handaxe assemblage directly dated to pre-MIS 13. Thus, Fordwich is determined to be a crucial piece of the pre-Anglian Palaeolithic puzzle in northern Europe.

show abstract

“…Terrace gravels at the Baoshan site date were dated to 0.6 ± 0.14 Ma using terrestrial cosmogenic nuclides (Van Buuren et al, 2020), and because these terraces correspond with channel facies a at this study site at Jinxing, we may assume a similar age for the terrace gravels at Jinxing. With regard to climatic conditions, the common opinion is that the basal braided river deposits (facies a; U1) may be attributed to a glacial period (e.g., Kasse, 1998; Mol et al, 2000; Vandenberghe and Woo, 2002; Van Huissteden et al, 2013; Wang et al, 2015, and references therein). In contrast, the overlying floodplain deposits and paleosols in a calmer meandering-wandering river system (facies b and c) are similar to the present -day, interglacial monsoonal river pattern.…”

Section: Discussion and Synthesis: Floodplain Geomorphology And Sedimentology Response To Monsoonal Climate Variabilitymentioning

confidence: 99%

Diverse floodplain deposits of reworked loess in a monsoon climate (Hanzhong Basin, central China)

et al. 2021

View full text Add to dashboard Cite

This paper describes an assemblage of diverse floodplain facies of reworked loess (facies b, c) in a Middle Pleistocene monsoonal setting of the Hanzhong Basin, central China. The vertical and lateral sedimentary sequences show changing energy conditions. Apart from the highest energy in the channel facies (facies a), a relatively high energy floodplain environment (facies b) prevailed in waterlogged conditions, with small, laterally migrating (sub)channels. Facies b generally interfingers with aggrading horizontal sheets of overbank deposits in alluvial pools and swamps in a floodplain with much lower energy (facies c), in which phases of stability (soil formation) occasionally interrupted overbank deposition. Reworked loess forms the main part of the floodplain deposits. The paleosols are considered to have been formed under low hydrodynamic conditions in an interglacial environment. These interglacial conditions follow the commonly assumed glacial conditions of channel facies a. The sedimentary successions in the floodplain show a recurrent composition and cyclicity between wet and dry floodplain sedimentation terminated by stability with soil formation. The cyclic rhythm of stacked high- and low-energy floodplain sediments is attributed to varied intensity of different hydrodynamic flooding events that may have been due to changing monsoonal rainfall or simple intrinsic fluvial behavior.

show abstract

PERMAFROST AND PERIGLACIAL FEATURES | Periglacial Fluvial Sediments and Forms

Cited by 12 publications

References 47 publications

Geomorphology and InSAR-Tracked Surface Displacements in an Ice-Rich Yedoma Landscape

Geomorphology and InSAR-Tracked Surface Displacements in an Ice-Rich Yedoma Landscape

On the earliest Acheulean in Britain: first dates and in-situ artefacts from the MIS 15 site of Fordwich (Kent, UK)

Diverse floodplain deposits of reworked loess in a monsoon climate (Hanzhong Basin, central China)

Contact Info

Product

Resources

About