Detailed Information on Publication Record
2017
Durbachites from the Eastern Moldanubicum (Bohemian Massif): erosional relics of large, flat tabular intrusions of ultrapotassic melts-geophysical and petrological record
LEICHMANN, Jaromír, Ivan GNOJEK, Milan NOVÁK, Jiří SEDLAK, Stanislav HOUZAR et. al.Basic information
Original name
Durbachites from the Eastern Moldanubicum (Bohemian Massif): erosional relics of large, flat tabular intrusions of ultrapotassic melts-geophysical and petrological record
Authors
LEICHMANN, Jaromír (203 Czech Republic, guarantor, belonging to the institution), Ivan GNOJEK (203 Czech Republic), Milan NOVÁK (203 Czech Republic, belonging to the institution), Jiří SEDLAK (203 Czech Republic) and Stanislav HOUZAR (203 Czech Republic)
Edition
International Journal of Earth Sciences, NEW YORK, SPRINGER, 2017, 1437-3254
Other information
Language
English
Type of outcome
Článek v odborném periodiku
Field of Study
10500 1.5. Earth and related environmental sciences
Country of publisher
Germany
Confidentiality degree
není předmětem státního či obchodního tajemství
Impact factor
Impact factor: 2.276
RIV identification code
RIV/00216224:14310/17:00094675
Organization unit
Faculty of Science
UT WoS
000393646000004
Keywords in English
Trebic and Jihlava ultrapotassic plutons; Radiometric magnetic and gravity survey results; Geological setting
Změněno: 3/4/2018 11:50, Ing. Nicole Zrilić
Abstract
V originále
The results of the airborne survey comprising gamma-ray spectrometry and proton magnetometry, ground gravity survey, and field geological observations (e.g., deep borehole profiles, contact aureole in dolomite marbles, distribution of granitic pegmatites within the TA (TM) ebi pluton) suggest that the ultrapotassic TA (TM) ebi and Jihlava plutons are flat intrusions. They intruded distinct deep levels of the crust, 2-4 kbar for TA (TM) ebi pluton, and 5-7 kbar for Jihlava-pluton. Current thickness of the intrusions is generally less than 2 km, with two exceptions: (1) central part of the Jihlava pluton and (2) a small body near VA 3/4 nice, where the estimated depth of tube-shaped stocks of shoshonitic and ultrapotassic gabbros or monzogabbros is around 2.5 km. These stocks could represent feeding pipes of basic and alkaline and dry magmas protruding to the upper crust level. The NE part of the TA (TM) ebi pluton is a bottom part of this body, whereas the NW corner and the southern promontory of the pluton could represent an upper (roof) part of the intrusion. Small isolated durbachite bodies located within the Moldanubian gneisses and migmatites of the StraA 3/4 ek Unit represent rootless remnants of a former large and flat durbachite body initially extending significantly more to N and NE and eroded since Lower Carboniferous. Discrepancy between the long-wave magnetic and gravity anomalies, and surface geological structure of the eastern part of the Moldanubian Zone indicates a crucial role of the thrust tectonics.
Links
| GA14-13600S, research and development project |
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