Details
| Original language | English |
|---|---|
| Pages (from-to) | 63-81 |
| Number of pages | 19 |
| Journal | GEODERMA |
| Volume | 106 |
| Issue number | 1-2 |
| Publication status | Published - 2002 |
Abstract
The feldspar content of three soils developed from Pleistocene calcareous till, glacial sand and loess in NW Germany was investigated in order to characterize the stores of feldspar in detailed particle split as well as changes as a function of soil depth. Feldspars are present in all fractions < 2000 μm except the < 0.2-μm fraction. In the 100- to 500-μm sand fractions, there is less feldspar content than in coarser or finer fractions. Changes during soil development intensify this distribution mainly because feldspars in the sand fractions have undergone physical weathering and appear in the silt and clay size fractions. The feldspar content of particle size fractions of a soil derived from calcareous till is definitely higher than that of a soil from glacial sand. The feldspars are composed of nearly equal amounts of Or and Ab phases, whereas the amount of An phase is smaller. An and Ab phases decrease most strongly in a soil derived from glacial sand. The change in feldspar contents has its highest intensity in a soil derived from glacial sand. Gains in feldspar in silt fractions result from weathering of feldspar sand grains. Additionally, decomposition of feldspar-containing rock particles of gravel size and aeolian sedimentation may have contributed to these gains as well. On account of the distinct differences in mineralogical composition between different particle size fractions, feldspar contents of the bulk soil < 2000 μm are clearly determined by particle size distribution. This is important if there is need for an easy way of predicting the nutrient store from the feldspar content.
Keywords
- Feldspar content, Forest soils, Particle size fractions, Pleistocene sediments, Weathering
ASJC Scopus subject areas
- Agricultural and Biological Sciences(all)
- Soil Science
Cite this
- Standard
- Harvard
- Apa
- Vancouver
- BibTeX
- RIS
In: GEODERMA, Vol. 106, No. 1-2, 2002, p. 63-81.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Effects of parent material and weathering on feldspar content in different particle size fractions from forest soils in NW Germany
AU - Dultz, Stefan
N1 - Funding information: The author thanks P. Nørnberg (Department of Earth Sciences, University of Aarhus) for his constructive comments and suggestions on the manuscript. The skillful experimental work of Mr. R.M. Klatt is gratefully acknowledged. This work was financially supported by the German Ministry for Education, Science, Research, and Technology (BMBF).
PY - 2002
Y1 - 2002
N2 - The feldspar content of three soils developed from Pleistocene calcareous till, glacial sand and loess in NW Germany was investigated in order to characterize the stores of feldspar in detailed particle split as well as changes as a function of soil depth. Feldspars are present in all fractions < 2000 μm except the < 0.2-μm fraction. In the 100- to 500-μm sand fractions, there is less feldspar content than in coarser or finer fractions. Changes during soil development intensify this distribution mainly because feldspars in the sand fractions have undergone physical weathering and appear in the silt and clay size fractions. The feldspar content of particle size fractions of a soil derived from calcareous till is definitely higher than that of a soil from glacial sand. The feldspars are composed of nearly equal amounts of Or and Ab phases, whereas the amount of An phase is smaller. An and Ab phases decrease most strongly in a soil derived from glacial sand. The change in feldspar contents has its highest intensity in a soil derived from glacial sand. Gains in feldspar in silt fractions result from weathering of feldspar sand grains. Additionally, decomposition of feldspar-containing rock particles of gravel size and aeolian sedimentation may have contributed to these gains as well. On account of the distinct differences in mineralogical composition between different particle size fractions, feldspar contents of the bulk soil < 2000 μm are clearly determined by particle size distribution. This is important if there is need for an easy way of predicting the nutrient store from the feldspar content.
AB - The feldspar content of three soils developed from Pleistocene calcareous till, glacial sand and loess in NW Germany was investigated in order to characterize the stores of feldspar in detailed particle split as well as changes as a function of soil depth. Feldspars are present in all fractions < 2000 μm except the < 0.2-μm fraction. In the 100- to 500-μm sand fractions, there is less feldspar content than in coarser or finer fractions. Changes during soil development intensify this distribution mainly because feldspars in the sand fractions have undergone physical weathering and appear in the silt and clay size fractions. The feldspar content of particle size fractions of a soil derived from calcareous till is definitely higher than that of a soil from glacial sand. The feldspars are composed of nearly equal amounts of Or and Ab phases, whereas the amount of An phase is smaller. An and Ab phases decrease most strongly in a soil derived from glacial sand. The change in feldspar contents has its highest intensity in a soil derived from glacial sand. Gains in feldspar in silt fractions result from weathering of feldspar sand grains. Additionally, decomposition of feldspar-containing rock particles of gravel size and aeolian sedimentation may have contributed to these gains as well. On account of the distinct differences in mineralogical composition between different particle size fractions, feldspar contents of the bulk soil < 2000 μm are clearly determined by particle size distribution. This is important if there is need for an easy way of predicting the nutrient store from the feldspar content.
KW - Feldspar content
KW - Forest soils
KW - Particle size fractions
KW - Pleistocene sediments
KW - Weathering
UR - http://www.scopus.com/inward/record.url?scp=0036173346&partnerID=8YFLogxK
U2 - 10.1016/S0016-7061(01)00116-1
DO - 10.1016/S0016-7061(01)00116-1
M3 - Article
AN - SCOPUS:0036173346
VL - 106
SP - 63
EP - 81
JO - GEODERMA
JF - GEODERMA
SN - 0016-7061
IS - 1-2
ER -