2020
DOI: 10.23928/foldt.kozl.2020.150.4.529
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A magyarországi bauxitok kutatásának rövid története (1903-2020)

Abstract: A hazai bauxitok bányászati célú kutatása a halimbai bauxitbánya 2013-ban bekövetkezett bezárásával – úgy tűnik végérvényesen – lezárult. Tudományos tanulmányozásuk, amely szinte egyidős a 110 évet megélt ipari kutatással, remélhetőleg folytatódik, bár kétségtelen, hogy a bányászat s az azt megelőző mélyfúrásos kutatás révén szinte naponta kelet kező újdonságértékű feltárásokat ezentúl legfeljebb a mintaraktárakban megőrződött(?) anyagok fogják jól-rosz-szul helyettesíteni. A visszatekintés, az eddigi eredmény… Show more

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(3 citation statements)
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“…The bedrock of karst depressions is Triassic Main Dolomite and Dachstein limestone [6,18], but the material of the depressions of Triassic Main Dolomite may have been reworked and accumulated in Late Cretaceous depressions [6]. Hungarian bauxites-the bauxites of the Bakony Region-can be classified as belonging to various development stages Bauxite is widespread in the mountains and may constitute a lenticular colony (diameter is about 20 m, thickness is 30-50 m, the bearing features is shallow doline), a deep-doline colony (diameter is 30-50 m, thickness is 80-100 m, the bearing features are deep doline), a bed-like colony (longitudinal expansion is several hundred meters, the bearing feature is polje or uvala), a structural colony (the bearing feature is tectonic graben), a deep-doline and structural colony (a combination of karst feature and structural feature), and a canyon-like colony when it is several hundred meters long; the karst feature is a blind valley [6,14,16].…”
Section: Direct Mining Effects On the Karstmentioning
confidence: 99%
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“…The bedrock of karst depressions is Triassic Main Dolomite and Dachstein limestone [6,18], but the material of the depressions of Triassic Main Dolomite may have been reworked and accumulated in Late Cretaceous depressions [6]. Hungarian bauxites-the bauxites of the Bakony Region-can be classified as belonging to various development stages Bauxite is widespread in the mountains and may constitute a lenticular colony (diameter is about 20 m, thickness is 30-50 m, the bearing features is shallow doline), a deep-doline colony (diameter is 30-50 m, thickness is 80-100 m, the bearing features are deep doline), a bed-like colony (longitudinal expansion is several hundred meters, the bearing feature is polje or uvala), a structural colony (the bearing feature is tectonic graben), a deep-doline and structural colony (a combination of karst feature and structural feature), and a canyon-like colony when it is several hundred meters long; the karst feature is a blind valley [6,14,16].…”
Section: Direct Mining Effects On the Karstmentioning
confidence: 99%
“…Hungarian bauxites-the bauxites of the Bakony Region-can be classified as belonging to various development stages Bauxite is widespread in the mountains and may constitute a lenticular colony (diameter is about 20 m, thickness is 30-50 m, the bearing features is shallow doline), a deep-doline colony (diameter is 30-50 m, thickness is 80-100 m, the bearing features are deep doline), a bed-like colony (longitudinal expansion is several hundred meters, the bearing feature is polje or uvala), a structural colony (the bearing feature is tectonic graben), a deep-doline and structural colony (a combination of karst feature and structural feature), and a canyon-like colony when it is several hundred meters long; the karst feature is a blind valley [6,14,16]. Under tropical climates, bauxite is the weathering residue of the rocks of the non-karstic terrain [16], which was transported into the karst depressions, and then accumulated in them but may have formed in situ as well [17], or it may have been transported from below by transgression [18]. The products of lateritic chemical weathering may originate from the peneplain built up of metamorphic rocks surrounding the mountains from S and SE [19].…”
Section: Direct Mining Effects On the Karstmentioning
confidence: 99%
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