DISTRAIDA, ALIENADA Y SILENCIOSA: LA MASA DE INDIVIDUOS

liths of the Kozakov volcano, Czech Republic. – Journal of

Petrology, 48, 12: 2235–2260.

ALLÈGRE C.J., TREUIL M., MINSTER J.F., MINSTER J.B. & ALBAREDE F. (1977): Systematic use of trace element in igneous process. Part I: fractional crystallization process- es in volcanic suites. – Contributions to Mineralogy and Pe-

trology, 60, 1: 57–75.

BLUSZTAJN J. & SHIMIZU N. (1994): The trace-element varia- tions in clinopyroxenes from spinel peridotite xenoliths from southwest Poland. – Chemical Geology, 111, 1–4: 227–243. DEPAOLO D.J. (1981): Trace element and isotopic effects of

combined wall-rock assimilation and fractional crystalliza- tion. – Earth and Planetary Science Letters, 53, 2: 189–202. ERSOY Y. & HELVACI C. (2010): FC–AFC–FCA and mix-

ing modeler: A Microsofts Excel & spreadsheet program for modeling geochemical differentiation of magma by crystal fractionation, crustal assimilation and mixing. – Computers

& Geosciences, 36, 3: 383–390.

POWELL R. (1984): Inversion of the assimilation and fraction- al crystallization (AFC) equations; characterization of con-

taminants from isotope and trace element relationships in volcanic suites. – Journal of the Geological Society, 141, 3: 447–452.

PRODEHL C., MÜLLER S. & HAAK V. (1995): The European Cenozoic rift system. – In: OLSEN K.H. (Ed.) Continen-

tal rifts: Evolution, structure, tectonics: 133–212. Elsevier,

Amsterdam.

ULRYCH J., DOSTAL J., ADAMOVIČ J., JELÍNEK E., ŠPAČEK P., HEGNER E. & BALOGH K. (2011): Recur- rent Cenozoic volcanic activity in the Bohemian Massif (Czech Republic). – Lithos, 123, 1–4: 133–144. ULRYCH J., NOVÁK J.K., LANG M., BALOGH K., HEG-

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ULRYCH J., PIVEC E., HÖHNDORF A., BALOGH K., BENDL J. & RUTŠEK J. (2000): Rhyolites from the Roz- toky Intrusive Centre, České středohoří Mts.: xenoliths or dyke rocks? – Chemie der Erde, 60, 4: 327–352.

State Office for the Nuclear Safety, No. 7403: Evaluation of

geological, geotechnical, hydrological and meteorological safety report for site installations of new nuclear facilities at Temelín (Coordinator: V. Cílek; D. Drábová, J. Štuller, SÚJB,

The State Institute of Nuclear Safety, V. Cílek, J. Adamovič,

K. Breiter & R. Mikuláš; 2013)

Team of ČEZ experts completed a 1000 page study of the safety factors concerning the newly planned nuclear facility of the existingTemelín nucler power plant for Blocks 3 and 4. Geo- logical and other Earth science security risks such as neotecton- ics, seismicity, hydrological modelling etc. (some 200 pages of the report and about 10 thousand pages of ca 300 supplementa- ry studies) were subject to a wide assessment of the geological safety of the site especially in the field of possible neotectonic movements and seismicity. The mutual meetings with ČEZ ex- perts and proposed field work improved the original data. The whole safety study was returned by SÚJB to ČEZ for rewriting. A new field study of tectonic hazards including morphological (LIDAR) analysis, geophysical methods and geological analy- ses within a 25km circle around the existing nuclear power plant was proposed and partly realised. The project is postponed due to new restrictions after the Fukushima disaster and internation- al methodology of IAEA in Vienna and it will continue on the

basis of a new agreement between SÚJB and Institute of Geo- logy CAS, v. v. i. in 2014.

Ministry of Education, Youth and Sports of the Czech Repub- lic, “KONTAKT II”, Project No. LH12079: Laboratory simu-

lations of space weathering – the role of iron nanoparticles in the reflectance spectra of asteroids (T. Kohout, G Kletet-

schka, R. Skála, J. Čuda, J. Filip, R. Zbořil & J. Tuček, Palacký

University Olomouc, Czech Republic; 2012–2015) The project focuses on the optical effects of asteroid sur- face space weathering associated with micrometeorite bombard- ment and related occurrence of nanosized metallic iron. New methodology of quantitatively controlled artificial production of nanosized metallic iron particles in size range of ca 1 nm to ca 100 nm and their deposition in surface layers of silicate minerals (olivine and pyroxene) and meteorites is being developed. Sub- sequently, the changes in reflectance spectra of such modified minerals and meteorites are measured and correlated to nano- sized metallic iron concentration and grain size. These spectral trends related to artificially produced nanosized metallic iron are subsequently compared to the observed space weathering trends observed in reflectance spectra of silicate-rich asteroids.

Severočeské doly, a. s., Project No. 7006: Magnetostratigra-

phy of the Libkovice Lake (Most Basin) (P. Schnabl)

Samples from core HK591 were measured using a 3-axis 2-G liquid-helium free superconducting rock magnetometer (type 755 4K SRM). Magnetic susceptibility (k) of specimens was determined using a KLY-4 Kappabridge. Specimens were

subjected to detailed AF demagnetization in 10–12 steps up to the field of 60 (100) mT. Results of measurements were ana- lyzed using the Remasof software package.

The sediments are characterized by a large scatter of the NRM intensities (0.1–303 mA.m-1_{). Samples are characterized by low}

Fig. 14. Inclined thermomineral chimney with calcite crystals (Giant Quarry of Devil’s Steps – Quarry West). Photo by P. Bosák.

from core HK591 can be divided into five parts with different mean values of NRM, from 1.2 mA.m-1 _{(interval 147–243 m) to}

138.8 mA.m-1 _{(interval 34–46 m).}

Magnetic polarity obtained from the drill-cored sediments (HK591) produced unequivocal results mainly in its upper part, while in the lower part, retrieved inclinations were scattered. The lower part of the sediment fill was also sampled in outcrops in the Bílina and Tušimice mines. Five magnetozones (three normal and two reverse) were identified in the clastics overlying the coal seam.

The time span of the studied section was interpreted to be much shorter than was assumed. The age was interpeted as Bur- digalian.

Charles University, Praha, Project No. 7012: Zonality of REE

concentrations in garnets from the Dunkelsteiner Wald granulite massif (M. Svojtka)

The studied garnet clinopyroxenite/eclogite garnets, sam- pled in the Dunkelsteiner Wald granulite massif were analyzed for REE concentrations using laser ablation ICP-MS technique. The results show that significant interaction including metaso- matic processes took part between felsic granulite and mantle rocks during their common metamorphic history.

Czech Geological Survey, Praha, Project No. 7014: Time-tem-

perature contrast in Createcous sediments from the James Ross Island (Antarctic Peninsula) (M. Svojtka)

We used apatite fission-track analysis for samples from the James Ross Island, Antarctic Peninsula. The samples were col-

lected with respect to the temperature profile: thermally affected sandstones (by intrusion of doleritic basalt) were sampled first, and sampling proceeded to thermally unaffected Cretaceous sandstones. We detected time-temperatute dependence from thermally affected sediments closest to the intrusion (dated about 15 Ma) to the samples away from intrusion (up to ca. 2 m) with ages of 64 Ma, 69 Ma and 89 Ma, respectively. Finally, we confirmed the Lower Cretaceous – Albian age (ca. 113 Ma) for sandstones farther away from the intrusion contact.

Moravian Museum in Brno, Project No. 7035: Geoarchaeologi-

cal report on sediments from the Kůlna Cave, Moravian Karst (L. Lisá, P. Lisý, A. Bajer, Mendel University, Brno &

P. Kubálek)

During the revision excavations of the upper Palaeolithic of the Kůlna Cave located in Moravian Karst, knowledge of the sedimentary filling of the cave was also revised. Facies analyses as well as micromorphological analyses, grain size distribution and geochemical composition were studied. The project result- ed in the interpretation of formation processes which took place there and are connected with the climatic and geoarchaeological record of MIS6–MIS3.

Velkolom Čertovy schody, Inc., Project No. 7302: Documenta-

tion of progress of quarry walls – reclamation of the Quar- ry–West (P. Bosák)

The reclamation exploitation of the Koněprusy Limestone (Pragian, Lower Devonian) was limited to two benches in the

quarry also in 2013. The continuation of calcite veins and cavi- ties of the thermomineral paleokarst (sometimes also with cal- cite crystals) discovered in 2009 and 2010 was documented. It seems that thick calcite veins split to thinner branches and pinch out towards the SSW at a distabce of several tens to hundreds of meters. Several isolated small thermomineral cavities with speleogens typical for ascending warm fluids developed along some calcite veins. Some of the cavities were covered with quite large calcite crystals (Fig. 14).

Institute of Archaeology of the CAS, Brno, v. v. i., Project No. 7364: Micromorphological evaluation of the infilling of

Slavic structure in Chotěbuz (L. Lisá)

The presence of a trampled floor layer was confirmed mi- cromorphologically. This provides a wider context of a case study more deeply discussing one of the possible types of envi- ronments of the Medieval hill fort at Chotěbuz.

Faculty of Philosophy, Masaryk University in Brno, Project No. 7365: Micromorphological report on the sample from the

Great Moravian Rotunda at Pohansko (L. Lisá)

The parameters of sediments found under the destruction of the Great Moravian Rotunda in Pohansko were evaluated based on micromorphological study. The lithified floor layer was iden- tified covering the refuse material from the building phases.

University College London, Department of Anthropology, Lon- don, UK, Project No. 7393: Report on micromorphological

analysis from Twin Barrow A from Pebblebeds Research of Prof. Tilley (UK) (L. Lisá)

Micromorphological analysis from Twin Barrow A from Pebblebeds Research of Prof. Tilley is the subject of this report. During the excavations of the barrow, a lithological descrip- tion was provided by K. Pauknerova from UCL, Prague and one sample 4.5 × 7 cm in size, covering macroscopically divided layers 4 and 5, was sampled for the purpose of microstratigraph- ical evaluation. Layer 5 corresponds to the anthropogenically influenced type of luvisol. The O horizon is partly missing but a thin layer of charcoal and microcharcoal mixed with mineral components appears. The uppermost part of the charcoal layer is illuviated which suggests that the site was left uncovered for a while at the time of charcoal deposition. Anthropogenically divided layer 4 situated above is composed of non-burned turf deposited upside down, so the soil layer corresponding to bio- turbated Olfh horizon followed by Ahe horizon composes the fi- nal episode of sedimentation observed in studied thin section.

Administration of the Bohemian Switzerland National Park, Krásná Lípa, Project No. 7407: Monitoring of Atmospheric

Precipitation in the Bohemian Switzerland National Park

(T. Navrátil, I. Dobešová, J. Rohovec & S. Hubičková) Monitoring of chemical composition of bulk precipita- tion proceeded in 2013 at the Kuní vrch locality in the territory of the Bohemian Switzerland National Park and followed the

monitoring of 2008 to 2012. The monthly bulk precipitations significantly differ according to the climatic conditions. Accord- ing to the bulk precipitation, the hydrological year 2013 can be assessed as above-average, the bulk precipitation at the Kuní vrch locality reached 989 mm. The value of pH is the important measured parameter of the atmospheric deposition. The low val- ues of pH are caused predominantly by anthropogenic factors. The pH of the precipitation on an open place at KV-dkx is be- tween 4.32 and 6.52, which is comparable with the values of pH in hydrological year 2012. The values of pH of throughfall at KV-thsf locality range from 4.20 to 5.68. The terrigenous dust contains soil and rock particles and influences the deposition fluxes of Al, Ca, K, Mn, Sr, Mg, and Fe elements. The values of deposition fluxes of most of these elements in hydrological year 2013 are comparable with those in the past years.

The acidification of environment represents a significant problem influenced primarily by atmospheric deposition of sul- phur dioxide and oxides of nitrogen. The decrease of annual deposition flux of SO42- at the KV-dkx locality in hydrological

year 2013 was measured and could correspond to the values of hydrological year 2011. The annual deposition flux of SO42- on

the open place reached 12.5 kg.ha-1_.year-1_{, at the KV-thsf lo-}

cality – throughfall –25.5 kg.ha-1_.year-1_{. The deposition fluxes}

of SO42- mostly come from the remote emission sources. The

monthly deposition fluxes can correspond to the seasonal char- acter of some emission sources.

The deposition fluxes of NO3- _{on the open place in hydrolog-}

ical year 2013 are comparable with those of hydrological year 2012, the annual deposition flux reached 23.3 kg.ha-1_.year-1_{. The}

monitored deposition fluxes of throughfall at the KV-thsf local- ity reached 37.8 kg.ha-1_.year-1_{. This represents 72 % of the depo-}

sition in the preceding hydrological year. The NOx emissions are

generated mostly from anthropogenic burning processes, pre- dominantly from traffic.

The higher values of deposition fluxes of throughfall con- firm the washing effect of the forest trees and the leaching of metabolites. In particular, K, Mg, Mn, and Rb are the elements metabolized by the forest vegetation.

Jihočeský kraj, Project No. 7427: Paleomagnetic dating of

sediments in the PP Skalka Quarry at Sepekov (J. Kadlec &

K. Čížková)

The age of floodplain sediments intercalated in fluvial and slope deposits was estimated using the paleomagnetic polarity approach. Based on interpreted normal paleomagnetic polarities, the age of sediments younger than Brunhes/Matuyama bound- ary is the most probable.

Česká společnost archeologická o.p.s., Praha, Project No. 7427:

Magnetic fabric of sediments from selected archeological sites in Prague City and surroundings (J. Kadlec & K. Čížková)

Anisotropy of magnetic susceptibility enables to assess pri- mary sedimentary structure or post-depositional deformations. This approach was applied to the study of sediments affected by slope processes or anthropogenic impacts in the context of ar- cheological research.