Late Miocene volcanic activity in the České středohoří Mountains (Ohře/Eger Graben, northern Bohemia)

Cajz, Vladimír; Rapprich, Vladislav; Erban, Vojtěch; Pécskay, Zoltán; Radoň, Miroslav

doi:10.2478/v10096-009-0038-8

Cited by 35 publications

(26 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Their upper boundary, marked by the 6050 ms -1 isovelocity, rises upward at km 230. Here, the S01 velocity image reveals an upwelling under the Doupovské hory and České středohoří volcanic complexes -see, for instance, Ulrych et al (1999) with Cajz et al (2009). The local maxima of depicted 6000 and 5900 ms -1 isovelocities (Fig.…”

Section: Magmatic Emplacementmentioning

confidence: 99%

Crustal structures beneath the Saxonian Granulite Massif, the České středohoří and the Doupovské hory Mts. based on the depth-recursive tomography

Novotný¹,

Skácelová²,

Mlčoch³

2012

J. Geosci.

View full text Add to dashboard Cite

The P-wave velocity distribution, obtained recently by the depth-recursive tomography along the S01 refraction profile of the SUDETES 2003 seismic experiment, correlated fairly well with other geophysical results known in the area of the KTB deep drilling site. The S01 velocity model also provided a reliable velocity image of the upper and middle-crustal structures along the Eger Graben. In the present paper we will use the results of the depth-recursive tomography applied to the crossing S04 profile to derive a 3-D picture of structures near the S04 and S01 intersection. The NW-SE trending S04 profile starts in the Saxonian Granulite Massif and intersects the Eger Graben in the region of Altenberg-Teplice Caldera. The depth-recursive tomography, applied to the S04 profile, also produced a velocity model allowing, together with the derived S01 velocities, a reliable 3-D interpretation down to the depths of 15-20 km. Besides the P-wave velocities, gravity, aeromagnetic and petrophysical data support the presented geological interpretation.Using the velocity and gravity data we identified the subsurface granitic and ultrabasic bodies in wider surroundings of the Saxothuringian and Teplá-Barrandian contact zone and also possible magmatic centers for the Teplice-Altenberg Caldera as well as for the Doupovské hory and the České středohoří volcanic complexes.

show abstract

Section: Magmatic Emplacementmentioning

confidence: 99%

Crustal structures beneath the Saxonian Granulite Massif, the České středohoří and the Doupovské hory Mts. based on the depth-recursive tomography

Novotný¹,

Skácelová²,

Mlčoch³

2012

J. Geosci.

View full text Add to dashboard Cite

show abstract

“…Based on a new volcanological model and geochemical investigation, Cajz et al (1999) described basalt occurrences in the lower and uppermost formations of the volcanosedimentary complex. Data on petrography, development, and age of basaltic rocks were obtained by Cajz et al (2009).…”

Section: Methodsmentioning

confidence: 99%

Pedogenesis on volcanic rocks in protected landscape areas in Central and North Bohemia

Žigová

Šťastný

2014

Soil & Water Res.

View full text Add to dashboard Cite

AbstractŽigová A., Šťastný M. (2014): Pedogenesis on volcanic rocks in protected landscape areas in Central and North Bohemia. Soil & Water Res., 9: 153-160.The development of soil cover on volcanic rocks in Central and North Bohemia was analyzed. The study was performed in the protected landscape areas on basalt, andesite, and dolerite. Parent material was characterized on the basis of thin-section study. Petrography of the parent material makes it possible to document the differences in the texture, character, and amount of rock-forming minerals. All the studied sequences exhibit the same configuration of soil profiles but various thicknesses. The soil profiles were evaluated on the basis of particle size distribution, chemical properties, soil organic matter parameters, and mineral composition of clay fraction. The major specific pedogenic process in soils developed on volcanic rocks is weathering of parent material and development of the Bw horizon with the formation of mainly smectite from the group of swelling clay minerals. The results revealed differences in the formation of the Bw horizon which is significantly affected by the petrography of the parent material and local geological conditions. According to the type of volcanic rocks, the intensity of the developmental process of the Bw horizon is as follows: andesite (Týřovické skály) > dolerite (Záhrabská) > basalt (Březina).

show abstract

“…Most of the magmatism was concentrated along the Eger Rift, which represents the easternmost branch of the European Cenozoic Rift System (e.g., Dèzes et al 2004;Rajchl et al 2008). Apart from the main volcanic complexes (see e.g., Ulrych et al 2002;Rapprich and Holub 2008;Cajz et al 2009;Holub et al 2010;Skála et al 2014;Ackerman et al 2015), several volcanic fields were formed also on the shoulders of the rift (Awdankiewicz 2005;Rapprich et al 2007;Büchner and Tietz 2012;Valenta et al 2014;Büchner et al 2015;Petronis et al 2015;Tietz and Büchner 2015;Awdankiewicz et al 2016;Ulrych et al 2016;Haase et al 2017). Our study focused on the Zebín Volcano, located in the Jičín Volcanic Field (Rapprich et al, 2007;Petronis et al 2015; Fig.…”

Section: Jičín Volcanic Fieldmentioning

confidence: 99%

Fingerprints of magma mingling processes within the Miocene Zebín tuff cone feeding system (Jičín Volcanic Field, Czech Republic)

Rapprich¹,

Shields²,

Halodová³

et al. 2018

J. Geosci.

View full text Add to dashboard Cite

A well-preserved set of partly eroded mid-Miocene scoria cones and tuff cones are exposed in the Jičín Volcanic Field, Czech Republic. Zebín Hill, a formerly quarried tuff cone with an exposed conduit and associated dikes, offers an opportunity to study magmatic processes within the high-level feeding system of a small monogenetic volcano. Two types of dikes and associated "blob-like" intrusions were observed. Pure basanite dikes predominate in the center of the cone, whereas its peripheries were intruded by mingled dikes. The mingled dikes consist of mm-scale basanitic domains enclosed in a network of trachyandesitic dikelets. Locally, hybrid domains with intermediate characteristics were observed. The basanite dikes and basanite enclaves within mingled dikes contain normally-zoned minerals (Fo 90 to Fo 70 olivine, Mg-rich to Mg-poor diopside, labradorite to andesine composition of plagioclase) indicative of basanite magma evolution during ascent. In contrast, the trachyandesite and hybrid enclaves in mingled dikes show reverse zoning of minerals (Mg-poor to Mg-rich diopside, sanidine to oligoclase feldspar composition) indicative of magma hybridization. This study suggests that the Zebín Volcano did not develop from a simple monogenetic system and through a single central axis feeder; rather, Zebín Hill evolved from a complex magma feeding/storage system and through a complex feeder network. We conclude that the simple external structure of a monogenetic volcano may sometimes hide rather complex magmatic plumbing systems encompassing compositionally contrasting rocks/magmas.

show abstract

Late Miocene volcanic activity in the České středohoří Mountains (Ohře/Eger Graben, northern Bohemia)

Cited by 35 publications

References 18 publications

Crustal structures beneath the Saxonian Granulite Massif, the České středohoří and the Doupovské hory Mts. based on the depth-recursive tomography

Crustal structures beneath the Saxonian Granulite Massif, the České středohoří and the Doupovské hory Mts. based on the depth-recursive tomography

Pedogenesis on volcanic rocks in protected landscape areas in Central and North Bohemia

Fingerprints of magma mingling processes within the Miocene Zebín tuff cone feeding system (Jičín Volcanic Field, Czech Republic)

Contact Info

Product

Resources

About