Details
| Original language | English |
|---|---|
| Pages (from-to) | 23-35 |
| Number of pages | 13 |
| Journal | New Zealand Journal of Geology and Geophysics |
| Volume | 60 |
| Issue number | 1 |
| Publication status | Published - 2 Nov 2016 |
Abstract
Weathering of primary silicates to secondary clay minerals over time affects multiple soil functions such as the accumulation of organic matter and nutrient cations. However, the extent of clay mineral (trans)formation as a function of soil development is poorly understood. In this study, the degree of weathering of sediments along a 120 kyr soil formation gradient was investigated using X‐ray diffraction, Fourier transform infrared spectroscopy and X‐ray fluorescence spectroscopy. Irrespective of site age, mica and chlorite were the dominant clay minerals. During weathering, a remarkable suite of transitional phases such as vermiculite and several interstratifications with vermiculitic, smectitic, chloritic and micaceous layers developed. The degree of weathering was correlated with soil pH and depletion of K, Ca, Na, Fe and Al, regarding both soil depth and site age. Kaolinite occurred especially at the 120 kyr site, indicating slow formation via transitional phases. The findings of this study revealed that long-term soil development caused complex clay mineral assemblages, both temporally and spatially, and linking this variability to soil functioning warrants further research.
Keywords
- hydroxy intercalation, hydroxy interlayered minerals, interstratifications, New Zealand, soil mineralogy, weathering
ASJC Scopus subject areas
- Earth and Planetary Sciences(all)
- Geophysics
- Earth and Planetary Sciences(all)
- Geology
- Earth and Planetary Sciences(all)
- Earth and Planetary Sciences (miscellaneous)
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In: New Zealand Journal of Geology and Geophysics, Vol. 60, No. 1, 02.11.2016, p. 23-35.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Complexity of clay mineral formation during 120,000 years of soil development along the Franz Josef chronosequence, New Zealand
AU - Dietel, J.
AU - Dohrmann, R.
AU - Guggenberger, G.
AU - Meyer-Stüve, S.
AU - Turner, S.
AU - Schippers, A.
AU - Kaufhold, S.
AU - Butz-Braun, R.
AU - Condron, L. M.
AU - Mikutta, R.
N1 - Funding information: This study was conducted as part of the DFG (German Research Foundation) project ‘Accumulation, transformation, and stabilisation of organic nitrogen along a mineralogical soil gradient’ (grant number MI 1377/5-1 and SCHI 535/11-2).
PY - 2016/11/2
Y1 - 2016/11/2
N2 - Weathering of primary silicates to secondary clay minerals over time affects multiple soil functions such as the accumulation of organic matter and nutrient cations. However, the extent of clay mineral (trans)formation as a function of soil development is poorly understood. In this study, the degree of weathering of sediments along a 120 kyr soil formation gradient was investigated using X‐ray diffraction, Fourier transform infrared spectroscopy and X‐ray fluorescence spectroscopy. Irrespective of site age, mica and chlorite were the dominant clay minerals. During weathering, a remarkable suite of transitional phases such as vermiculite and several interstratifications with vermiculitic, smectitic, chloritic and micaceous layers developed. The degree of weathering was correlated with soil pH and depletion of K, Ca, Na, Fe and Al, regarding both soil depth and site age. Kaolinite occurred especially at the 120 kyr site, indicating slow formation via transitional phases. The findings of this study revealed that long-term soil development caused complex clay mineral assemblages, both temporally and spatially, and linking this variability to soil functioning warrants further research.
AB - Weathering of primary silicates to secondary clay minerals over time affects multiple soil functions such as the accumulation of organic matter and nutrient cations. However, the extent of clay mineral (trans)formation as a function of soil development is poorly understood. In this study, the degree of weathering of sediments along a 120 kyr soil formation gradient was investigated using X‐ray diffraction, Fourier transform infrared spectroscopy and X‐ray fluorescence spectroscopy. Irrespective of site age, mica and chlorite were the dominant clay minerals. During weathering, a remarkable suite of transitional phases such as vermiculite and several interstratifications with vermiculitic, smectitic, chloritic and micaceous layers developed. The degree of weathering was correlated with soil pH and depletion of K, Ca, Na, Fe and Al, regarding both soil depth and site age. Kaolinite occurred especially at the 120 kyr site, indicating slow formation via transitional phases. The findings of this study revealed that long-term soil development caused complex clay mineral assemblages, both temporally and spatially, and linking this variability to soil functioning warrants further research.
KW - hydroxy intercalation
KW - hydroxy interlayered minerals
KW - interstratifications
KW - New Zealand
KW - soil mineralogy
KW - weathering
UR - http://www.scopus.com/inward/record.url?scp=84994130025&partnerID=8YFLogxK
U2 - 10.1080/00288306.2016.1245668
DO - 10.1080/00288306.2016.1245668
M3 - Article
AN - SCOPUS:84994130025
VL - 60
SP - 23
EP - 35
JO - New Zealand Journal of Geology and Geophysics
JF - New Zealand Journal of Geology and Geophysics
SN - 0028-8306
IS - 1
ER -