@article{MTMT:1394245,
	title = {Tectonic versus climatic control on the evolution of a loess–paleosol sequence at Beremend, Hungary: An integrated approach based on paleoecological, clay mineralogical, and geochemical data},
	url = {https://m2.mtmt.hu/api/publication/1394245},
	author = {Raucsikné Varga, Andrea Beáta and Újvári, Gábor and Raucsik, Béla},
	doi = {10.1016/j.quaint.2010.10.032},
	journal-iso = {QUATERN INT},
	journal = {QUATERNARY INTERNATIONAL},
	volume = {240},
	unique-id = {1394245},
	issn = {1040-6182},
	abstract = {The role of two major factors, climate and tectonism, in controlling loess-paleosol evolution has been evaluated in the present study based on a multi-proxy dataset comprising mollusc, bulk and clay mineralogical, and geochemical data. A recent trend has been to use chemical indices such as the chemical index of alteration (CIA) for paleoclimate reconstructions in loess-paleosol sequences spanning several hundreds of thousands of years, but without any tectonic interpretation. Possible effects of geodynamic factors on physical erosion, chemical weathering and consequently weathering proxies are discussed. Clearly, the relative rates of physical erosion and chemical weathering in a sedimentary environment could be significantly influenced by geodynamic factors and governed not just by climate. Intensifying tectonic uplift gives rise to enhanced physical erosion, leading to increased supply of fresh mineral surfaces having less time to react with weathering agents. In theory, this process may point towards decreasing chemical weathering in a sequence without any real changes of climate. In the studied loess-paleosol sequence at Beremend (Hungary) a trend of decreasing chemical weathering has been observed, which can be explained by a global climate deterioration and accelerating uplift in and around the sedimentary basin. Increasing dust sedimentation could theoretically also contribute to this process as a result of increasing aridification and wind strength reflecting climate change in weathering records following a non-linear amplification. The findings refer to the fact that the impact of tectonism should also be taken into consideration in tracing past chemical weathering trends on timescales of hundreds of thousands (or millions) of years. This is because tectonic effects may impose on the CIA signal and distort it suggesting a potential bias in reconstructing paleoclimate change based only on this proxy from certain loess sequences associated with young orogenic belts. (C) 2010 Elsevier Ltd and INQUA. All rights reserved.},
	year = {2011},
	eissn = {1873-4553},
	pages = {71-86},
	orcid-numbers = {Raucsikné Varga, Andrea Beáta/0000-0002-8673-1482; Újvári, Gábor/0000-0002-2816-6155; Raucsik, Béla/0000-0002-1951-5974}
}

@article{MTMT:1452387,
	title = {Quantitative absorbance spectroscopy with unpolarized light, Part II. Experimental evaluation and development of a protocol for quantitative analysis of mineral IR spectra},
	url = {https://m2.mtmt.hu/api/publication/1452387},
	author = {Kovács, István János and Hermann, J and O'Neill, H S and Fitz, Gerald J and Sambridge, M and Horváth, Gábor},
	doi = {10.2138/am.2008.2656},
	journal-iso = {AM MINERAL},
	journal = {AMERICAN MINERALOGIST},
	volume = {93},
	unique-id = {1452387},
	issn = {0003-004X},
	keywords = {POLARIZATION; infrared spectroscopy; mineralogy; olivine; Calcite; Absorbance; nominally anhydrous minerals; topaz; unpolarized light; absorbance spectroscopy},
	year = {2008},
	eissn = {1945-3027},
	pages = {765-778},
	orcid-numbers = {Kovács, István János/0000-0002-3488-3716}
}

@article{MTMT:2030783,
	title = {Quantitative absorbance spectroscopy with unpolarized light: Part I. Physical and mathematical development},
	url = {https://m2.mtmt.hu/api/publication/2030783},
	author = {Sambridge, M and Gerald, JF and Kovács, István János and O'Neill, HStC and Hermann, J},
	doi = {10.2138/am.2008.2657},
	journal-iso = {AM MINERAL},
	journal = {AMERICAN MINERALOGIST},
	volume = {93},
	unique-id = {2030783},
	issn = {0003-004X},
	abstract = {A new approach to the use of spectroscopic absorbance measurements for anisotropic crystals allows results to be extracted using unpolarized light incident on random crystal orientations. The theory of light propagation in anisotropic absorbing crystals is developed from Maxwell's equations to devise an expression for the transmittance of linearly polarized light traveling in an arbitrary direction in weakly absorbing media. This theory predicts the distribution of transmittance and absorbance as a function of direction and polarization angle of incident light. It is shown how a previously deduced empirical expression, commonly used in infrared spectroscopy, is a good approximation to the full theory under a wide range of conditions. The new theory shows that principal polarized absorbances correspond to the eigenvalues of an absorbance ellipsoid. An expression is derived for the unpolarized absorbance as a function of the angles describing incident light direction, A unpol(φ, ψ), and the principal polarized absorbances, A a, A b, A c in an anisotropic crystal. A unpol(φ,ψ) = 1/2[A a(cos 2φcos 2ψ + sin 2ψ) + A b(cos 2φsin 2ψ + cos 2ψ) + A csin 2φ]. Integration of this expression over all incident angles leads to a simple relationship between total measured unpolarized absorbance and the three principal polarized absorbances. Using this theory, a procedure is proposed for estimating both total (A a + A b + A c) and principal absorbances from spectroscopic measurements of absorbance using unpolarized light on a set of randomly oriented crystals.},
	keywords = {SPECTROSCOPY; light; quantitative analysis; POLARIZATION; crystal structure; infrared spectroscopy; Atomic absorption spectroscopy; Absorbance; unpolarized light; transmittance; anisotropic medium; Anisotropic media; Absorption index theory},
	year = {2008},
	eissn = {1945-3027},
	pages = {751-764},
	orcid-numbers = {Kovács, István János/0000-0002-3488-3716}
}

@article{MTMT:25973,
	title = {Long-term terrestrial records of the Middle Danubian Basin},
	url = {https://m2.mtmt.hu/api/publication/25973},
	author = {Pécsi, Márton and Schweitzer, Ferenc},
	doi = {10.1016/1040-6182(93)90074-P},
	journal-iso = {QUATERN INT},
	journal = {QUATERNARY INTERNATIONAL},
	volume = {17},
	unique-id = {25973},
	issn = {1040-6182},
	year = {1993},
	eissn = {1873-4553},
	pages = {5-14}
}