2016
Geological and geophysical study of basic volcanic bodies. A case study from Říp hill, Czech Republic
SOKOL, Ľuboš; Jan ČERNÝ; Tomáš MARHANSKÝ; Lubomil POSPÍŠIL; Otakar ŠVÁBENSKÝ et al.Základní údaje
Originální název
Geological and geophysical study of basic volcanic bodies. A case study from Říp hill, Czech Republic
Autoři
SOKOL, Ľuboš; Jan ČERNÝ; Tomáš MARHANSKÝ; Lubomil POSPÍŠIL a Otakar ŠVÁBENSKÝ
Vydání
14th Meeting of the Central European Tectonic Studies Group. 2016
Další údaje
Jazyk
angličtina
Typ výsledku
Konferenční abstrakt
Obor
10500 1.5. Earth and related environmental sciences
Stát vydavatele
Česká republika
Utajení
není předmětem státního či obchodního tajemství
Označené pro přenos do RIV
Ne
Organizační jednotka
Přírodovědecká fakulta
ISBN
978-80-223-4071-7
Klíčová slova anglicky
Volcanic rock; nephelinite; geophysics
Příznaky
Mezinárodní význam
Změněno: 13. 5. 2016 14:49, Mgr. Jan Černý, Ph.D.
Anotace
V originále
Geophysical and geological studies of basic volcanic bodies with high contrast of density and magnetic susceptibility in comparison with the hosting environment can help to understand internal structure of such bodies. Říp hill, which forms an isolated volcanic pipe emplaced in Cretaceous sediments, has been selected as an ideal object for such study. Říp hill consists of olivine poor nephelinite (Ulrych et al., 1998). Its high density (almost 3,2 g/cm3) and susceptibility (in order of magnitude X*10-2 SI) significantly contrast with the properties of hosting Cretaceous sedimentary rocks (relatively low density and magnetic susceptibility). In spite of its high density, this isolated volcanic body is depicted by a negative anomaly in the generally available maps of Bouguer anomalies. This is the case also for many other Cenozoic volcanic bodies in Bohemian Massif (Polanský, 1980). For that reason we have made new gravity and magnetic susceptibility measurements on the top of the hill and in the surrounding area. In addition, geological mapping and structural measurements were made to clarify the architecture of the volcanic pipe. All these data lead to better understanding of structure and evolution of Cenozoic volcanic bodies in the Bohemian Massif.