Clay mineralogy and chemical properties of argillic horizons in central Yukon paleosols

DavielE.,; SanbornP.,; TarnocaiC.,; SmithC., A. S.

doi:10.4141/cjss10067

Cited by 6 publications

(6 citation statements)

References 24 publications

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“…The BC and C horizons of penultimate till also have chlorite, chlorite intergrades, and vermiculite with only a small amount of smectite. (Bond and Sanborn 2006) and from Bt horizons in pre-Reid age soils in the central Yukon (Daviel et al 2011); values are similar to those obtained at weathered bedrock sites adjacent to our sampling locations (Dampier et al 2011).…”

Section: Clay Mineralogysupporting

confidence: 88%

Genesis of upland soils, Lewes Plateau, central Yukon. Part 1: soils formed on Pleistocene glacial deposits

et al. 2011

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Dampier, L., Sanborn, P., Smith, S., Bond, J. and Clague, J. J. 2011. Genesis of upland soils, Lewes Plateau, central Yukon. Part 1: soils formed on Pleistocene glacial deposits. Can. J. Soil Sci. 91: 563–578. We describe and interpret nine upland (>1000 m asl) Dystric Brunisols and one Humo-Ferric Podzol formed on till of the McConnell [Marine Isotope Stage (MIS) 2] and penultimate (MIS 4 or 6) glaciations on the Lewes Plateau of central Yukon Territory. Unlike soils formed on correlative glacial deposits at lower elevation in the nearby Tintina Trench, the soils on the Lewes Plateau display only weak age-related differences. Penultimate and McConnell soils have solum thicknesses of 50–75 cm and <50 cm, respectively, but other morphological and chemical properties do not differ between the two age groups. Smectite is present in the McConnell soils; it was previously reported only in soils formed on Early Pleistocene glacial deposits in central Yukon and was interpreted to reflect weathering and soil formation during warm interglaciations. Paleoclimatic interpretations of clay mineralogy in central Yukon may be confounded by differences in parent material provenance and should be reassessed. This study shows that field soil characteristics alone are insufficient to differentiate McConnell and penultimate glacial deposits in upland landscape positions on the Lewes Plateau.

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Section: Clay Mineralogysupporting

confidence: 88%

Genesis of upland soils, Lewes Plateau, central Yukon. Part 1: soils formed on Pleistocene glacial deposits

et al. 2011

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“…The authors concluded that these deposits had a similar alteration history and were subjected to moderate weathering. For cold-climate regions, Daviel et al (2011) inferred an average value of 74.4 in a paleosol located in central Yukon; these authors propose that values near 75 show a considerable proportion of primary minerals converted into clay minerals. In Siberia, Zech et al (2008) identified values of CIA > 63 that they interpreted as being related to intense weathering processes.…”

Section: Geochemical Properties Of the Sedimentsmentioning

confidence: 99%

“…Chemical weathering in periglacial areas is also an important mechanism in terms of geomorphic work (Allen et al, 2001;Thorn et al, 2001), being controlled by the type of lithology, biological activity, organic matter, topography, aspect, water availability, the structure of the hydrologic system and the age of exposure/deglaciation (Egli et al, 2014). Previous work developed indexes, such as the chemical index of alteration (CIA) (Daviel et al, 2011), to assess soil weathering based on geochemical properties, .…”

Section: Introductionmentioning

confidence: 99%

Sedimentological characteristics of ice-wedge polygon terrain in Adventdalen (Svalbard) – environmental and climatic implications for the late Holocene

et al. 2014

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Abstract. Ice wedges are widespread periglacial features in the landscape of Adventdalen, Svalbard. The networks of ice wedges have created areas with well-developed polygonal terrains in the lowest fluvial terraces in this valley. We have examined the sedimentological characteristics of the northern and southern banks of the Advent river for palaeoenvironmental purposes. The base of two sedimentary sections reported radiocarbon dates of 3.3 and 3.9 ka BP, respectively. The northern site is constituted by three very different lithostratigraphical units, which suggests that their formation should be related to different environmental and climate conditions. By contrast, the southern section shows a rather homogeneous composition, with no significant variations in grain size and organic matter content. In both cases the uppermost sediments are constituted by a thick aeolian deposit. According to our data, warmer climate conditions may have prevailed during the mid Holocene until 3.3 ka BP with widespread peat formation in the valley bottom. Subsequently, a period with alternating soil formation and aeolian sedimentation took place from 3 to 2.5 ka BP, probably due to increasing climatic severity. During the last millennium a long-term cooling trend has favoured aeolian deposition in the lowest part of Adventdalen.

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Section: Introductionmentioning

confidence: 99%

Sedimentological characteristics of ice-wedge polygon terrain in Adventdalen (Svalbard). Environmental and climatic implications for the Late Holocene

Oliva¹,

Vieira²,

Pina³

et al. 2014

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Abstract. Ice-wedges are widespread periglacial features in the landscape of Adventalen, Svalbard. The networks of ice-wedges have created areas with well-developed polygonal terrains in the lowest fluvial terraces in this valley. We have examined the sedimentological characteristics of the northern and southern banks of the Advent river for palaeoenvironmental purposes. The base of two sedimentary sections reported radiocarbon dates of 3.3 and 3.9 ka cal BP, respectively. The northern site is constituted by three very different lithostratigraphical units, which suggests that their formation should be related to different environmental and climate conditions. By contrast, the southern section shows a rather homogeneous composition, with no significant variations in grain size and organic matter content. In both cases the uppermost sediments are constituted by a thick aeolian deposit. According to our data, warmer climate conditions may have prevailed during the Mid Holocene until 3.3 ka cal BP with widespread peat formation in the valley bottom. Subsequently, a period with alternating soil formation and aeolian sedimentation took place from 3 to 2.5 ka cal BP, probably due to increasing climatic severity. During the last millennium a long-term cooling trend has favoured aeolian deposition in the lowest Adventalen valley.

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Clay mineralogy and chemical properties of argillic horizons in central Yukon paleosols

Cited by 6 publications

References 24 publications

Genesis of upland soils, Lewes Plateau, central Yukon. Part 1: soils formed on Pleistocene glacial deposits

Genesis of upland soils, Lewes Plateau, central Yukon. Part 1: soils formed on Pleistocene glacial deposits

Sedimentological characteristics of ice-wedge polygon terrain in Adventdalen (Svalbard) – environmental and climatic implications for the late Holocene

Sedimentological characteristics of ice-wedge polygon terrain in Adventdalen (Svalbard). Environmental and climatic implications for the Late Holocene

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