Mineral composition as indicator of the origin of soils formed on carbonate rocks in the Bükk-Highland (NE Hungary)

Németh, Eszter and Sajó, I. and Bidló, A. (2014) Mineral composition as indicator of the origin of soils formed on carbonate rocks in the Bükk-Highland (NE Hungary). Agrokémia és Talajtan, 63 (1). pp. 39-48. ISSN 0002-1873

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Abstract

Bedrock has an essential role in the formation of soils, it fundamentally determines mineral composition. The present research focuses on the minerals in forest soils formed in the Bükk Mountains (NE Hungary). The composition of soil minerals was in accordance with the geological features as well as with the changes in climate and vegetation, which provide a basis for tracking the past of the soil formation mechanisms (<sc>Nemecz</sc>, 2006). Thus, by studying the mineral composition the formation processes and development of the soils can be unveiled.According to the findings it can be assumed that the investigated soils, although formed primarily on solid limestone, cannot be the products of the weathering of limestone solely, as they also contain significant amounts of silicates. The major part of the soil forming materials presumably originates from earlier dust fallings or from alluvial deposits by erosion. The former assumption is confirmed by the fact that the investigated area is located at a high altitude, thus significant amounts of eroded material could only originate from a short distance, where the bedrock also consists of limestone. Further research is needed for more detailed knowledge on the mineral composition of the soils, thus on the development of the soils and the bedrock of the investigated area.

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