Genesis and characterization of manganiferous soils in the Eastern Piedmont, USA

Bourgault, Rebecca R.; Rabenhorst, Martin C.

doi:10.1016/j.geoderma.2011.07.008

Cited by 11 publications

(15 citation statements)

References 15 publications

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“…The parent rock contained average quantities of Fe and somewhat high quantities of Mn oxides in the dolomitic portion, but the amounts were sufficient to account for the total Fe and Mn in the soils. Tlie predominant Mn and Fe oxides in these soils are lithiophorite and hematite, respectively (Bourgault and Rabenhorst, 2011). Both of these minerals are thermodynamicaUy stable and persist under weathered, acidic conditions.…”

Section: Ec -Mn Content Relationshipmentioning

confidence: 91%

“…Lighter colored materials were found underneath black, Mn-rich horizons at Site B in Pedons 252, B-2, and 216 ( Fig. 3 and 4), however, and also at Site D. Morphological and mineralogical evidence shows that the lighter colored soil materials are probably derived from phyllite or greenstone of the Sams Creek formation, reflecting the complicated, folded geology of the area, which results in lithologie discontinuities (Bourgault and Rabenhorst, 2011).…”

Section: Soil-landscape Studiesmentioning

confidence: 95%

“…of dolomite and calcite marble bedrock and the accumulation of resistant noncarbonate residue (Bourgault and Rabenhorst, 2011). The parent rock contained average quantities of Fe and somewhat high quantities of Mn oxides in the dolomitic portion, but the amounts were sufficient to account for the total Fe and Mn in the soils.…”

Section: Ec -Mn Content Relationshipmentioning

confidence: 99%

“…The Mn content of the pedons observed along the transect was not directly measured; however, the Mn content of the pedons for intensive characterization (including B-2) was quantified using a slightly modified version of Mehra and Jackson (1960). In these soils, a statistically significant relationship was found between color and Mn content (Bourgault and Rabenhorst, 2011). Therefore, the Mn content of the soils observed along the transect was estimated from color measurements made using a digital colorimeter (measured to 0.1 units of value and chroma).…”

Section: Electromagnetic Induction Surveysmentioning

confidence: 99%

“…The majority of pedogenic studies using EMI have focused primarily on electrical conductivity; however, EMI sensors also detect magnetic susceptibility, so EMI can also be used to detect materials in soils that induce changes in magnetic susceptibility (e.g., Simpson et al, 2009). Iron is generally more abundant than Mn in these manganiferous soils, but Fe and Mn are strongly correlated (r = 0.89) (Bourgault and Rabenhorst, 2011). Therefore, the effects of Fe or Mn alone on EC^ cannot be separated in this study.…”

Section: Electromagnetic Induction Surveysmentioning

confidence: 99%

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Manganiferous Soils in Maryland: Regional Extent and Field‐Scale Electromagnetic Induction Survey

Bourgault

Rabenhorst

2012

Soil Science Soc of Amer J

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There are some unique soils in central Maryland with extremely high quantities of Mn and Fe oxides, up to 141 g kg−1 Mn and 169 g kg−1 Fe (extracted by dithionite–citrate–bicarbonate). Such high quantities of Mn oxides have pigmented the entire soil matrix black in subsoil horizons. Previously, little was known about the extent of these manganiferous soils in Maryland. Pedons were observed in transects across several fields containing manganiferous soils to better understand their spatial variability and possible relationship to landscape and geology. Manganiferous soils are heterogeneous; some pedons show modest to moderate Mn enrichment in the form of black nodules or coatings, while other pedons show extreme Mn enrichment in the form of black, loamy material up to 8.5 m deep. The soils seem to occur in relation to areas mapped as having marble bedrock in the geologic survey. The utility of electromagnetic induction (EMI) for delineating manganiferous soil units was tested for the first time. Apparent electrical conductivity (ECa) readings from the EM38DD EMI sensor had a significant empirical relationship to Mn content of the studied soils (R2 = 0.88), so maps generated from ECa data correspond reasonably well to observations made during transect work. Electromagnetic induction is therefore a useful tool for delineating manganiferous soils, which occurred in units of approximately 1 to 2 ha in each of the three fields observed.

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Section: Ec -Mn Content Relationshipmentioning

confidence: 91%

Section: Soil-landscape Studiesmentioning

confidence: 95%

Section: Ec -Mn Content Relationshipmentioning

confidence: 99%

Section: Electromagnetic Induction Surveysmentioning

confidence: 99%

Section: Electromagnetic Induction Surveysmentioning

confidence: 99%

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Manganiferous Soils in Maryland: Regional Extent and Field‐Scale Electromagnetic Induction Survey

Bourgault

Rabenhorst

2012

Soil Science Soc of Amer J

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Characteristics and potential pedogenetic processes of a Technosol developing on iron industry deposits

et al. 2012

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Technosols include soils dominated or strongly influenced by human-made materials. Similarly to natural soils, technogenic parent materials submitted to environmental factors undergo weathering and transformation processes. But the pedogenesis of the Technosols remains little known. With this aim in view, a Technosol developing on purely technogenic materials resulting from iron industry was thoroughly characterized in order to discuss pedogenetic evolution of this Technosol using knowledge about pedogenesis of natural soils. Materials and methods:The studied site was a former settling pond, where mainly sludge generated by wet cleaning of blast-furnace fumes was dumped until probably in the mid-20 th century. Thereafter the pond has been colonized by vegetation and is covered by a diversified forest. The soil was composed of contrasted layers. A 20 cm organic layer has developed at the surface. Samples were collected in the first two meters which are under root influence.Elemental composition, agronomic parameters, mineralogy as well as physical and hydraulic properties of the soil materials were characterized.

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Terra Rossa catenas in Wisconsin, USA

Evans

Hartemink

2014

CATENA

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Genesis and characterization of manganiferous soils in the Eastern Piedmont, USA

Cited by 11 publications

References 15 publications

Manganiferous Soils in Maryland: Regional Extent and Field‐Scale Electromagnetic Induction Survey

Manganiferous Soils in Maryland: Regional Extent and Field‐Scale Electromagnetic Induction Survey

Characteristics and potential pedogenetic processes of a Technosol developing on iron industry deposits

Terra Rossa catenas in Wisconsin, USA

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