Late Pleistocene relic Ultisols and Alfisols in an alluvial fan complex in coastal Tuscany

Carnicelli, Stefano; Benvenuti, Marco; Andreucci, Stefano; Ciampalini, Rossano

doi:10.1016/j.quaint.2014.10.009

Cited by 11 publications

(5 citation statements)

References 36 publications

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“…This should be actually considered as a maximum age; observation will show that there are doubts about profile stratigraphic homogeneity and aeolian contributions. Also, a comparable degree of weathering has been found on dated soils of more recent age, in Tuscany (Carnicelli et al, 2015).…”

Section: The Mugello Basin Fillsupporting

confidence: 54%

“…The buried Collecchio palaeosol records a major soil-forming episode, lasting a minimum of some tens of thousands of years (Carnicelli and Costantini, 2013;Carnicelli et al, 2015), on a stable geomorphic surface with a deepwater table . In other words, it records a terraced landform, by-passed by rivers, and elevated with respect to the active alluvial plain. This palaeosol marks a high-rank unconformity, recognised at sub-synthem level as marking the top of either AES3 sub-synthem or AESind unit (Carnicelli et al, 2003 and references therein).…”

Section: Geo-morphological Settingmentioning

confidence: 99%

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Quaternary deformations, palaeosols and strata across the Northern Apennines

Andreetta¹,

Benvenuti²,

Maestrelli³

et al. 2023

GFT

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The Northern Apennines chain is an active orogen developed in a continental collisional setting. During the Quaternary active tectonics, climate fluctuations, and sea-level change left a clear imprint on the regional geomorphology and the surface geology. Examination of stratigraphically correlated palaeosols within alluvial and coastal clastic successions occurring on both sides of the chain, i.e., on the active front (Northern slope) and the back-arc area (Tuscany), provide fine detail to reconstructions of the orogen dynamic during the Quaternary. Examples of dated and correlated palaeosols within their morpho-structural, stratigraphic, and sedimentological context, will be presented and discussed on the Northern side of the chain (Ghiardo plateau, in the picture) and in the coastal Tuscany (Baratti gulf). In the transfer from the northern slopes to the back-arc area, selected stops in the Pleistocene fluvio-lacustrine Mugello basin will provide a sight into the morpho-stratigraphic architecture of an intermontane basin developed in the axial portion of the Northern Apennines.

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Section: The Mugello Basin Fillsupporting

confidence: 54%

Section: Geo-morphological Settingmentioning

confidence: 99%

Quaternary deformations, palaeosols and strata across the Northern Apennines

Andreetta¹,

Benvenuti²,

Maestrelli³

et al. 2023

GFT

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“…In the VEN1 (IT20) site, the soil developed on the loess cover of a limestone plateau, a cover deposited no later than the last glacial period. The soil of the LAZ1 site is interpreted as being of Pleistocene age based on its degree of development and compared with soils of known ages in similar areas (Carnicelli and Costantini, 2013;Carnicelli et al, 2015).…”

Section: Study Sitesmentioning

confidence: 99%

Atmospheric deposition control of soil acidification in central Italy

Cecchini

Andreetta

Marchetto

et al. 2019

CATENA

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Acidification is a major soil-forming process, and concerns about acidifying anthropogenic atmospheric deposition make it a significant environmental issue. In the long term, the depletion of exchangeable base cations (BCEs) is the main process underpinning soil acidification. In south-central Italy, acidic soils are not rare and are often located in areas with no excess rainfall over potential evapotranspiration. Many such soils are understood to have been derived from long-term weathering, although whether acidification is an active process remains an open question.Data from the International Co-operative Programme (ICP-Forests) monitoring system revealed that BCE atmospheric deposition was high and stable in south-central Italy and allowed us to estimate the BCE budget of some acidic forest soils. We estimated the overall BCE budget of four sites in this network. Tracer approaches using conservative ions, Na + and Cl − , were calibrated to estimate dry BCE deposition and soil water fluxes. The contribution of atmospheric deposition to the BCE budget was such that potassium was found to be regularly accumulating at all sites at the rate of 0.08 to 0.42 g•m −2 •y −1 , while calcium was accumulating at a rate of 1.11 g•m −2 •y−1 at a central Italy site. For Ca 2+ at the other sites and for magnesium at all sites, the effect of deposition was such that the rate of BCE depletion was significantly reduced. Soil acidification appeared to be a non-active process in the central, lowland and hilly areas of Italy.

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“…The formation of clay minerals from the weathering of silicate minerals is subject to both the mineralogy of the source material and climate. Chemical weathering reactions, hydrolysis in particular, are both water‐dependent and endothermic; silicates break down faster and more completely under warm and wet climates (Al‐Hawas, 1989; Berner & Holdgren Jr., 1979; Carnicelli et al, 2015; Tan, 1982). In simplest terms, soils dominated by minerals such as illite and/or smectite are considered less weathered, that is, formed under cooler or drier conditions, than soils dominated by kaolinite.…”

Section: Introductionmentioning

confidence: 99%

Record of palaeoclimate across theCretaceous–Palaeogeneboundary from palaeosols in the west‐central San Juan Basin, New Mexico, USA

Tanner,

Lucas

2023

The Depositional Record

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The mass extinction at the Cretaceous–Palaeogene boundary is widely attributed to sudden and severe climate changes forced by bolide impact and/or flood basalt volcanism. In terrestrial depositional settings, these changes may potentially be recorded by palaeosols. To test the ability of pedogenic features to record both long‐term climate and shorter‐term changes preceding and following the Cretaceous–Palaeogene extinction event, palaeosols in the Upper Cretaceous (Maastrichtian) Naashoibito Member of the Ojo Alamo Formation and the lower Palaeocene (Danian) Nacimiento Formation in the San Juan Basin of north‐western New Mexico, USA, were examined, including data from previous studies. The fine‐grained facies of the Naashoibito Member comprises grey to greenish‐grey and red‐banded mudstones displaying pedogenic features including colour mottling, root traces, cutans, ped fabrics, pedogenic slickensides and calcareous nodules. Aside from a high‐chroma horizon at the formation base, palaeosols in the lower Nacimiento Formation are broadly similar to those observed in the Naashoibito Member. Lateral and vertical variability of the pedogenic features between correlated sections suggest that soil hydrology varied spatially and temporally from very saturated to seasonally well‐drained, with temporal variations controlled by basin sedimentation rates. Abrupt and/or catastrophic climate events precisely at the Cretaceous–Palaeogene boundary are not recorded due to an unconformity at the top of the Naashoibito Member. However, the presence of kaolinite in the clay mineral assemblage of the Nacimiento Formation, particularly near the formation base, but not in the Naashoibito Member, indicates episodic warmth and short (104 years) intervals of more intense weathering conditions during the very early Danian as compared to the late Maastrichtian. Aside from short warm intervals, the overall palaeoclimate during deposition of both formations was warm and consistently subhumid to humid and seasonal, suggesting no substantial long‐term (105–106) climate change took place across the Cretaceous–Palaeogene boundary in the San Juan Basin.

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Late Pleistocene relic Ultisols and Alfisols in an alluvial fan complex in coastal Tuscany

Cited by 11 publications

References 36 publications

Quaternary deformations, palaeosols and strata across the Northern Apennines

Quaternary deformations, palaeosols and strata across the Northern Apennines

Atmospheric deposition control of soil acidification in central Italy

Record of palaeoclimate across theCretaceous–Palaeogeneboundary from palaeosols in the west‐central San Juan Basin, New Mexico, USA

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