Németh , K. , U. Martin
2007 : Shallow sill and dyke complex in western Hungary as a possible feeding system of phreatomagmatic volcanoesin “soft rock” environment . – Journal Volcanology and Geothermal Research , 159 , pp. 138 – 152
This paper is devoted to the description of spessartine-almandine garnet (Sps: 39.8-60.2%; Alm: 29.1-56.76%; Grs <7%, Prp <3.6%, Adr <5%) from aplitic dyke rocks of the Mórágy granitoid near Erdõsmecske and Aranyos valley. The aplitic dyke rocks contain K-feldspar, plagioclase, quartz, (myrmekite), ±garnet, ±biotite, chlorite or secondary muscovite, ±ore minerals, ±calcite, ±apatite and ±epidote. Two different zoning types in garnet were detected by electron microprobe. Zoning type I means either Mn enrichment at the expense of Fe towards the rim or towards the core or plateau garnet profiles. Zoning type II displays Ca enrichment at the rim of garnet. A high proportion of Sps component in garnet and the character of zoning type I are considered as typical magmatic features. The pressure-temperature estimation for aplite formation arises from experimental investigations of Green (1977) in agreement with the hypothetical approach of liquidus relationships by Abott and Clarke (1979) giving a minimum temperature estimation of c. 675 °C-700 °C at pressure of 1-3 kbar. Following the magmatic crystallization, solid state deformation is evidenced by dynamic recrystallization of quartz and feldspars at temperatures of about 450-500 °C in the upper greenschist to lower amphibolite facies. Grossular-rich rim of garnet indicates pressure increase during ductile deformation.
Authors:János Haas, Tamás Budai, István Dunkl, Éva Farics, Sándor Józsa, Szilvia Kövér, Annette E. Götz, Olga Piros, and Péter Szeitz
of the andesite dike found in core Bö-1 ( Farics et al. 2015 ).
In places, the Upper Eocene conglomerate is overlain by a shallow marine Discocyclina-bearing limestone (Szépvölgy Formation), e.g., on the Törökugrató Hill. However, Triassic
Authors:Stephen Fityus, Ákos Török, and John Gibson
This paper presents a case study to illustrate the role played by geologic structures in the design and construction of major transportation infrastructure, in a setting of moderately deformed Paleozoic sedimentary rocks in eastern Australia. It describes a complex development of folding, faulting and jointing that has resulted in significant inclination of beds, juxtaposition of strata and affected the weathering characteristics of a wide range of rock types. The sequence, which displays an upward transition from marine to terrestrial sediments, comprises an interbedded succession of conglomerate, sandstone, shale and erratic volcanics and crystal tuff. Unfavorable relationships between major excavation faces, inclined beds and jointing have resulted in problems with the stability of road cuttings. Also, the presence of faults and dykes at various scales has had a significant effect on weathering and rock strength. The paper demonstrates the importance of the choice of alignment at design stage, and how a basis of good structural interpretation and geologic mapping can be used to avoid problems during construction and issues with ongoing maintenance.
) 2002: First international workshop: Physical geology of subvolcanic systems - laccoliths, sills, and dykes (LASI) Wissenschaftliche Mitteilungen, 20, p. 75.
First international workshop: Physical geology of subvolcanic systems
Authors:Szabolcs Harangi, Sonia Tonarini, Orlando Vaselli, and Piero Manetti
pyroxene chemistry of Monteregian dykes: the origin of concentric zoning and green cores in clinopyroxenes from alkali basalts and lamprophyres. - Can. J. Earth Sci., 25, pp. 2041-2058.
Petrology and pyroxene chemistry of
Árva-Sós, E., L. Ravasz-Baranyai 1992: A Mecsek és Villányi hegység között feltört telérkőzetek K/Ar kora (K/Ar age of the Cretaceous dike rocks risen in the Mecsek and Villány Mts [SW Hungary]). (In Hung. with
Authors:Gergely Dabi, Ferenc Tóth, and Félix Schubert
region was accompanied by magmatic dike emplacement both in the MZ and the Mórágy Granite to the southeast. A pervasive microcrack generation is prevalent in the MZ metamorphic rocks, the parent fluid of which is related to the dike emplacement, according