Boros István (szerk.): A Magyar Természettudományi Múzeum évkönyve 6. (Budapest 1955)

Herrmann, M.: Mátrai és cserhátaljai pannon homokok vizsgálata

The Examination of the Pannonian Sands of the Mt. Mátra and the Cserhátalja By M. Herrmann, Budapest The following deductions can be made from the micromineralogical examinations of the Pannonian Sands of the Mt. Mátra and the Cserhátalja : 1. The Pannonian Sands of the Mt. Mátra and the Cserhátalja are, the same as those of the Bükkalja, one-maximal fine sands regarding their grain-size distribution. By this, we may consider all our Pannonian Sands of the Bükkalja, Mt. Mátra, and Cserhátalja as of marine origin, indeed, as shore sediments. 2. The following can be concluded from the mineralogical composition : crystalline schists had an important role in the primary abrading area not only in the Bükkalja but also in the Mt. Mátra, and the Cserhátalja region (the presence of brown tourmaline, cyanite, and staurolite). However, the amount of cyanite and staurolite, referring to rocks of the mesocrystalline zone, gradually decreases from the localities of the Bükkalja — through those of the Mátra and the Cserhátalja —• toward Veresegyháza and Gödöllő, and it will altogether disappear around Veresegyháza. The amount of tourmaline also lessens from the Bükkalja toward Veresegyháza, but does not disappear around this latter locality. 3. The amount of magnetite will generally also decrease from the Bükkalja toward Veresegyháza ; whilst the amount of garnet will increase. 4. Aside of the minerals of a crystalline schist origin (garnet, brown tourmaline, cyanite, staurolite, epidote, chlorite, zoisite), other minerals of an acido-magmatic origin also occur (green amphibole, zircon, magnetite, etc.).