of plutonic rocks and orthogneisses in the Bohemian Massif Josef Klomínský Tomáš Jarchovský Govind S. Rajpoot

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1 Atlas of plutonic rocks and orthogneisses in the Bohemian Massif bohemicum Josef Klomínský Tomáš Jarchovský Govind S. Rajpoot Czech Geological Survey Prague 2010

2 CZECH GEOLOGICAL SURVEY ATLAS of plutonic rocks and orthogneisses in the Bohemian Massif 1. BOHEMICUM Compiled by Josef KlS. Rajpoot Compiled by Josef Klomínský Tomáš Jarchovský Govind S. Rajpoot The Bohemicum volume is a part of the Atlas of plutonic rocks and orthogneisses in the Bohemian Massif which consists of six chapters: INTRODUCTION 1. BOHEMICUM 2. MOLDANUBICUM 3. SAXOTHURINGICUM 4. LUGICUM 5. BRUNOVISTULICUM AND MORAVOSILESICUM In the Introduction volume are summarized general characteristics of the plutonic rocks and orthogneisses from a point of view of their composition, age, 3-D shape, zonation, metallogeny and spatial distribution. The territorial chapters 1 5 comprise structured geological parameters of the plutonic rocks and orthogneisses located within boundaries of the principal geological zones in the Bohemian Massif. The compilation work was supported by the Radioactive Waste Repository Authority of the Czech Republic (RAWRA) and by the Czech Geological Survey. Acknowledgements We would like to thank the following colleagues who have helped in the compilation and correction of this review: A. Dudek, F. Fediuk, M. Chlupáčová, V. Janoušek J. Kotková, M. René, Z. Vejnar, P. Vlašímský, P. Schovánek and S. Vrána. We are grateful for technical assistance to P. Kopecký, M. Toužimský, J. Holeček, M. Fifernová, J. Kušková, J. Karenová, V. Čechová, and L. Richtrová. In spite of the negative view on our work and unrealistic comments we thank also to M. Štemprok and F. V. Holub for their criticism which helped us to improve the original manuscript. * Corresponding author Josef Klomínský, Czech Geological Survey, Klárov 131/3, Prague 1, Czech Republic. Fax (+420) address: josef.klominsky@geology.cz

3 J. Klomínský, T. Jarchovský, G. S. Rajpoot, 2010 ISBN

4 THE ATLAS OF PLUTONIC ROCKS AND ORTHOGNEISSES IN THE BOHEMIAN MASSIF 1. BOHEMICUM Josef Klomínský a *, Tomáš Jarchovský a, Govind S. Rajpoot b a Czech Geological Survey, Klárov 131/3, Praha 1, b Náchodská 2030, Praha 9, Czech Republic Contents FOREWORD CENTRAL BOHEMIAN COMPOSITE BATHOLITH (CBCB) CENTRAL BOHEMIAN PLUTON (CBP) KLATOVY MASSIF SATELITE STOCKS AND DYKE SWARMS BOHUTÍN STOCK PADRŤ STOCK LEŠETICE STOCK OBOŘIŠTĚ STOCK BROD STOCK ROŽMITÁL STOCK (RS) PŘÍBRAM DYKE SWARM IGNEOUS ROCKS IN THE ROOF OF THE CENTRAL BOHEMIAN PLUTON JÍLOVÉ VOLCANIC BELT (JVB) ONDŘEJOV METATONALITE MIROTICE ORTHOGNEISS STARÉ SEDLO ORTHOGNEISS (2.2.) ULTRAPOTASSIC PLUTONITES (D U R B A C H I T E S) BOR MASSIF MARIÁNSKÉ LÁZNĚ STOCK (MLS) KLADRUBY COMPOSITE MASSIF (KCM) KLADRUBY MASSIF SEDMIHOŘÍ STOCK ŠTĚNOVICE STOCK BABYLON STOCK SKALKA (MLÝNEČEK) STOCK KDYNĚ-NEUKIRCHEN COMPOSITE MASSIF (KNCM) STOD MASSIF POBĚŽOVICE MASSIF

5 1.13. MRAČNICE-JENÍKOVICE MASSIF ČISTÁ-JESENICE COMPOSITE PLUTON ČISTÁ MASSIF BECHLÍN MASSIF PETROVICE STOCK KOSOBODY STOCK KOŽLANY COMPOSITE STOCK CHOCENICKÝ ÚJEZD STOCK MLADOTICE STOCK VITÍNKA (KOKOTSKO) STOCK LOWER VLTAVA COMPOSITE MASSIF NERATOVICE MASSIF HOŠTICE STOCK CHOTĚLICE MASSIF CHVALETICE MASSIF NASAVRKY COMPOSITE MASSIF (NCM) RANSKO COMPOSITE STOCK METAMORPHOSED GRANITIC INTRUSIONS IN THE BOHEMICUM LESTKOV MASSIF POLOM MASSIF HANOV ORTHOGNEISS TELECÍ POTOK ORTHOGNEISS TEPLÁ ORTHOGNEISS The locality map of the plutonic rocks and orthogneisses in the Bohemian Massif (folded) 2

6 FOREWORD One of the principal characteristics of the Bohemicum (Teplá-Barrandian Unit) is the relative scarcity of plutonic rocks, which are so frequent in the Moldanubicum and Saxothuringicum. The overall positive gravity field of the whole area indicates that plutonites are missing also in deeper crustal level (Dudek 1995). According to Dudek (1995) the individual plutonites may be divided into two groups: (a) basic massifs with acidic differentiates, and (b) granitoid massifs. The presence of pre-variscan (Cadomian) and Variscan members is taken for granted in both groups. According to Holub et al. (1995), the Central Bohemian Composite Batholith (Central Bohemian Plutonic Complex) is considered to be part of one of the principal magmatic complexes not only in the Bohemicum but also in the Bohemian Massif. References DUDEK, A. (1995): Teplá-Barrandian Zone (Bohemicum) Igneous Activity. In: Dallmeyer, R. D. Franke, W. Weber, K. Eds: Pre-Permian Geology of Central and Eastern Europe, Springer Verlag, Berlin, Heidelberg.Verlag, Berlin, Heidelberg. HOLUB. F. V. KLEČKA, M. MATĚJKA, D. (1995): The Moldanubian Zone Igneous activity. In: Dallmeyer, R. D. Franke, W. Weber, K. Eds: Pre-Permian Geology of Central and Eastern Europe, Springer Verlag, Berlin, Heidelberg. FUSÁN, O. KODYM, O. MATĚJKA, A. Eds (1967): Geological map of Czechoslovakia 1 : 500,000. Czech Geol. Survey, Prague. 1. CENTRAL BOHEMIAN COMPOSITE BATHOLITH (CBCB) Central Bohemian Pluton (CBP) Satellite Stocks and Dyke Swarms Igneous Rocks in the Roof of the Central Bohemian Pluton (2.2.) Ultrapotassic Plutonites (see the Moldanubicum section) Regional position: CBCB intruded along the Central Bohemian Suture between the Moldanubian Zone and Teplá-Barrandian Unit (Bohemian Zone). Its members, the Říčany Massif, Durbachite Plutons (the Milevsko and Tábor Massifs), Benešov Massif and SW part of the Blatná and Červená Granodiorites intruded the Moldanubian Zone. The typological classifications of CBCB rock types (see references) are based on their petrographic, chemical, and mineralogical composition (e.g. Palivcová 1965, Steinocher 1969, Vejnar 1974, Holub et al. 1997, Janoušek et al. 2000b). The CBCB comprises according to Janoušek et al. (2000b) five granitoid suites: Sázava suite (Sázava, Marginal and Požáry intrusions), Blatná suite (the Blatná with the Červená facies, Těchnice and Kozárovice facies), Čertovo břemeno suite (Sedlčany, Čertovo břemeno and Tábor intrusions), Říčany suite (Říčany intrusion) and Maršovice suite (Maršovice, Kozlovice and Kosova Hora intrusions). According to Holub et al. (1997) the CBCB consists of seven geochemically distinctive granitoid groups: GA group the calc-alkaline group (hornblende gabbro to biotite-hornblende granodiorite CaG group Ca-rich and K-poor acid granitoids (biotite granodiorite to trondhjemite) HK group high-k calc-alkaline to shoshonitic group (scarce monzonitic rocks and voluminous amphibole-biotite granodiorite to monzogranite UK group the ultrapotassic group comprising amphibole-biotite to pyroxene-biotite melasyenitic to melagranitic rocks KMgG group more acid high-k, high-mg granites closely related to UK LG group dykes of leucogranites. Eight groups in this review have been distinguished: 1. Central Bohemian Pluton (CBP) calcalkaline and high-k calc-alkaline suites. I and S types. 2. Klatovy Massif (KM) a member of the Central Bohemian Composite Batholith (an apophysis of CBP). 3. Satellite Stocks (SS) isolated bodies of the calc-alkaline suite in the periphery of CBP. 4. Dyke Swarms (DS) are represented by the Přibram Dyke Swarm spatially related to the Central Bohemian Pluton and the Milevsko Dyke Swarm showing in general more complex origin and relationship to the Central Bohemian 3

7 Composite Batholith (see the Moldanubicum section). 5. Říčany Massif (ŘM) (Říčany suite) see the Moldanubicum section. 6. Durbachite Plutonites (Čertovo břemeno Suite) high-to ultrapotassic suite including the Milevsko Massif and Tábor Massif (see the ultrapotassic magmatites in the Moldanubicum section) 7. Metagranitoids (MG) miscellaneous group of magmatites contrasting in origin, composition and age. The Mirotice and Staré Sedlo Orthogneiss, Jílové Alaskite to Metatonalite, and Ondřejov Metatonalite occurs in the roof of the CBP. The Benešov Massif is described in the Moldanubicum section. 8. Unclassified granitoids (mostly peraluminous granitoids): Zbonín Granite (lateorogenic) porphyritic biotite ± muscovite monzogranite; Kšely Granite (probably deformed equivalent of the Říčany Granite), Chleby Quartz Diorite (small bodies). Size and shape (in erosion level): The CBCB outcrop has approximately a triangular shape (150 x l00 km) with surface area of 3,200 km 2 including rocks in the cover of the CBCB (2,830 km 2 of granitoid area). It is an agglomerate of several groups of intrusions of different size and shape (e.g. sheet-like or tabular massifs and vertical stocks). Relicts of country rocks (metamorphic roof) overlying the CBCB are referred to as roof pendants (the islet zone represents the roof of volcano-sedimentary rocks of Neoproterozoic to Devonian age). Central Bohemian Pluton ~ 2,000 km 2, long elliptical shape in the erosion level is the asymmetric ethmolith with reverse subvertical deep seated root in the northwest and rather subhorizontal complex contact with Moldanubian gneisses in the southeast. The Červená Granodiorite (the marginal facies of Blatná Granodiorite) makes finger-like apophyses into Moldanubian gneisses. Satellite Stocks at the NW periphery of the CBP (its satellite plutonic bodies) have a typical vertical pipe-like shape in diameter of up to several km (e.g. the Padrť Stock and Bohitín Stock). Ultrapotassic (durbachite) plutonites 400 km 2 in outcrop size are sheet-like intrusions (Tábor amd Milevsko Massif). The Říčany Massif (15 10 km) is a circular (zoned) intrusion in the surface section (see its detailed description in the Moldanubicum). 4

8 Fig Central Bohemian Composite Batholith hierarchical scheme. A classification used in this review, B classification after Holub et al. (1997), C classification after Janoušek et al. (2000). CA CaG Ca-rich granitoids, LG leucogranites, AIG peraluminous granitoids, KMgG K-Mg-rich granites, CA calc-alkaline gabbroic and granitoids of the Sázava type. T tonalite, Gd granodiorite, Tr trondhjemite, Ms melasyenite, G granite, Mg melagranite. 5

9 Fig Central Bohemian Composite Batholith geological sketch-map (adapted after Cháb et al. 2008). 1 gabbrogabbrodiorite, 2 Sázava Tonalite-diorite-granodiorite, 3 Kozárovice Granodiorite, 4 Těchnice Granodiorite, 5 Požáry Trondhjemite, 6 Blatná Granodiorite (N Něčín Granodiorite), 7 Marginal Granite, 8 Červená (Č) and Dehetník (D) Granodiorite, 9 Kozlovice and Maršovice Granodiorite, 10 Sedlčany Granodiorite, 11 Čertovo břemeno Metagranite, 12 Tábor Melasyenite, 13 Říčany Granite, 14 Benešov Granodiorite, 15 Orthogneisses (MO Mirotice Orthogneiss, SSO Staré Sedlo Orthogneiss), 16 Jílové Alaskite, 17 leucogranites, 18 boundary of the tectonostratigraphic units, 19 faults, Pe Pecerady Gabbro, Z Zálužany Quartz monzonite, Zb Zbonín Granite, KH Kosova Hora Granodiorite, Ny Nýrsko Granite, Mč Mrač Granodiorite, Br Brod Stock, L Lešetice Stock,Ob Obořiště Stock. Metagranitoids (e.g. the Mirotice and Staré Sedlo Orthogneisses) are scattered elliptical bodies up to km and 20 1 km respectively. Dyke Swarms are clusters of numerous dykelike and sheet-like bodies within the exocontact of CBCB and its interior. The Příbram Dyke Swarm occurs within the NW exocontact of the Central Bohemian Pluton and its interior. Individual dyke clusters are older and subsequent to the Central Bohemian Pluton. The Milevsko Dyke Swarm occupying the area of 8 km in diameter indicates existence of the large, hidden intrusion of unknown age and provenience. Age and isotopic data: granitic intrusions of the CBCB single-zircon dating indicates Lower Carboniferous (Tournaisian Viséan) ages and their emplacement during a short time span of about 10 Ma. Milevsko Dyke Swarm Upper Carboniferous (Namurian). Mirotice and Staré Sedlo Orthogneisses Middle-Upper Devonian (Frasnian Famennian). Jílové Alaskite Metatrondhjemite Neoproterozoic age. Central Bohemian Pluton K-Ar analyses on biotite and hornblende from a variety of granitoids yielded ages in the range of 360 to 324 Ma. Sázava Tonalite 349 ± 12 Ma (Pb-Pb zircon), ± 3.5 Ma (U-Pb zircon), Blatná Granodiorite 331 ± 9 Ma (Rb-Sr whole rock), 346 ± 10 Ma (Pb-Pb zircon),346.7 ± 1.6 Ma (SHRIMP zircon), Požáry Trondhjemite 351 ± 11 Ma (Pb-Pb zircon), Vrančice Quartz diorite 342 ± 4 Ma (Ar-Ar hornblende), Klatovy Granodiorite 349 ± 6/-4 Ma 6

10 (U-Pb zircon), 339 ± 10 Ma (K-Ar biotite), Nýrsko Granite 341 ± 2 Ma (U-Pb zircon), 342 ± 8 Ma (K- Ar biotite), Kozlovice Granodiorite 345 ± 6/-4 Ma (U-Pb zircon), ± 1.6 Ma (U-Pb zircon). Gabbrodiorite enclave in the Bohutín Tonalite ± 0.5 Ma (Ar-Ar biotite). Říčany Granite 330 (K-Ar whole rock), 335 Ma (Rb-Sr whole rock). Durbachites less than 331 ± 4 Ma (Rb-Sr whole rock), Čertovo břemeno Melagranite 345 ± 5 Ma (Pb-Pb zircon), 343± 6 Ma (U-Pb zircon),336.6 ± 1.0 Ma (U-Pb zircon), 336 Ma (Ar-Ar biotite). Tábor Melasyenite ± 0.8 Ma (rutile). Jílové Volcanic Zone is of Neoproterozoic age (~ 650 Ma), Mirotice and Staré Sedlo Orthogneisses 373 ± 5 Ma (U-Pb zircon), crystallization age in the range of Ma. Leucogranites 332 Ma (Rb-Sr), Milevsko Dyke Swarm the youngest intrusions in the CBCB, possibly near to 319 Ma. Příbram Dyke Swarm youngest minete dyke 338 Ma (Ar-Ar biotite). Temporal relations (from older to younger types): Metagranitoids Sázava Tonalite Požáry Trondhjemite, Blatná Granodiorite Marginal Granite Kozlovice Granodiorite Maršovice Granodiorite Čertovo břemeno Melagranite, Sedlčany Granodiorite, Tábor Melasyenite Zbonín Granite, Kosova Hora Granite Říčany Granite Stephanian C Autunian sedimentary cover. Čertovo břemeno Melagranite intrudes the Upper Devonian strata and the Blatná Granodiorite intrudes the Lower Devonian sediments. Xenoliths of coarse-grained granite, similar to the Marginal type, have been recorded in the Klatovy granodiorite (Kodym and Suk 1960) that was intruded 349 Ma ago (conventional U-Pb zircon dating of Dörr et al. 1998). An age of the CBP cooling to 500 C (Ar-Ar amphibole) is Ma and under 300 C is 338 Ma (Ar-Ar biotite). Geological environment: Neoproterozoic up to Lower Devonian pellites, greywackes, metabasalts, keratophyres and the Varied Group of the Moldanubicum (migmatites, gneisses with intercalations of calcareous rocks, amphibolites, greywackes). Contact aureole: distinct and intense contact metamorphism at the NW exocontact (in Teplá- Barrandian Unit) and in roof pendants, producing silicification of country rocks. The thermal contact aureole is almost 800 m wide. Extensive migmatization at the SE exocontact (in the Moldanubian high-grade gneisses). Zoning: Regional scale: CBCP distinct compositional zoning trending E-W and SE-NW. Interlayer of the mafic and granitic rocks that represent original boundaries and interfaces indicates stratification of the magma chamber. Gently dipping to sub-horizontal mafic layers are chilled against and separated by much thinner layers of granitoids, which often display textures typical for cumulate rocks. Milevsko Massif show compositional zoning from SE to NW or N, respectively. Local scale: Tábor Massif concentric zonation (pyroxene > biotite in the centre and biotite > pyroxene at the margin). Benešov Massif weak compositional zoning, the central granodiorite is surrounded by a narrow rim of the hybrid biotite-amphibole granodiorite along the endocontact. Mineralization: Au + Sb, Au, Ag-Pb-Zn-Cu ore veins within plutonites and country rocks and roof pendants, uranium in the NW exocontact of Central Bohemian Pluton (in the Teplá- Barrandian Unit) only. 7

11 Fig Classification of the Central Bohemian Composite Batholith according to petrographical (A Svoboda et al. 1964), petrochemical (B Tauson et al. 1979, C Steinocher 1969, D Sattran and Klomínský 1970, E Vejnar 1974) and mineralogical criteria (F Kodymová and Vejnar 1974). 1 Sázava Tonalite, 2 Blatná Granodiorite, 3 Červená Granodiorite, 4 Sedlčany Granodiorite, 5 Čertovo břemeno Melagranite, 6 Tábor Melasyenite, 7 Marginal Granite, 8 Požáry Trondhjemite, 9 Říčany Granite, 10a Benešov Granodiorite, 10b Benešov Melagranodiorite, 11 Těchnice Granodiorite, 12 Klatovy Granodiorite, 13 Bohutín Tonalite, 14 Kozlovice Granodiorite, 15 Maršovice Granodiorite, 16 Basic rocks, 17 Sedlec Granodiorite, 18 Kosova Hora Granodiorite, 19 Dehetník Granodiorite, 20 Nýrsko Granite, 21 Něčín Granodiorite. A Petrographical classification (Svoboda et al. 1964) 1 Sázava Tonalite, Bohutín Quartz diorite, Těchnice Granodiorite. 2 Blatná, Červená, Sedlčany, Klatovy, Něčín Granodiorite, Požáry Trondhjemite, Marginal Granite, Nýrsko Granite, 3 Tábor Syenite and Čertovo břemeno Melagranite, 4 Benešov Granodiorite and Kšely Granite, 5 Říčany Granite, 6 Kozlovice, Kosova Hora and Maršovice Granodiorites, 7 Basic rocks. B Petrochemical classification (Tauson et al. 1979) 1 Gabbro-tonalite-granodiorite group, 2 Granodiorite-granite group, 3 Durbachite (monzonite-syenite) group, 4 group of contaminated fine-grained granitoids. 8

12 C Petrochemical Classification (Steinocher 1969) 1 Sázava and Vltava Granodiorites, basic rocks, Požáry Trondhjemite, Blatná Granodiorite and Něčín Quartz diorite, 2 Tábor Melasyenite, Čertovo břemeno Melagranite, Sedlčany Granodiorite, 3 Benešov, Sedlec, Klatovy, Maršovice, Těchnice, Kosova Hora, Kozlovice Granodiorites, Nýrsko Granite, Říčany Granite, Marginal Granite, Brdo Leucogranite, Černíkov Quartz monzonite, leucogranites. 4 Červená, Sedlec and Dehetník Granodiorites. D Metallogenic classification (Sattran and Klomínský 1970) 1 Petrometallogenic Au-series, 2 Petrometallogenic syenite series, 3 Petrometallogenic Mo-W-series, 4 not classified igneous rocks, 5 basic rocks. E Geochemical Classification (Vejnar 1974) 1a Benešov Melagranodiorite, Červená and Sedlčany Granodiorite (10b ), 1b Sázava Tonalite, Blatná, Klatovy, Sedlec, Granodiorite ( ), 2 Čertovo břemeno Melagranite and Tábor Melasyenite (5 + 6), 3a Marginal Granite, Říčany and Jevany Granites and leucogranites (7 + 9), 3b Benešov, Kosova Hora, Těchnice, Něčín Granodiorite and Požáry Trondhjemite (10a ). F Mineralogical (according to accessory late magmatic minerals) classification (Kodymová and Vejnar 1974) 1 titanite-ilmenite (basic rocks), 2 titanite-orthite-ilmenite (types Čertovo břemeno, Blatná, Červená, Klatovy, Marginal, Sázava and Dehetník), 3 titanite-orthite/or monazite-fluorite-ilmenite (types Benešov, Požáry, Sedlčany, Sedlec and leucogranites, 4 monazite-fluorite-titanite (types Říčany, Těchnice and Kosova Hora. Fig Diagrammatic scheme of field relationship among rock groups and rock types of the Central Bohemian Batholith (adapted after Holub et al. 1997). Central Bohemian Pluton: 1 gabbroic rocks (CA Group), 2 tonalite rocks (CA Group), 3 granodiorite rocks (HKCA Group), 4 granite-granodiorite rocks (HKCA Group), 5 trondhjemite rocks (CaG Group), 6 hybrid rocks (AIG Group) 7 Říčany Massif (KMgG Group), 8 Leucogranites (LG Groups), 9 and 10 Milevsko and Tábor Massif (UK and KMgG Group). 11 faults, 12 Proterozoic and Palaeozoic rocks, 13 rock dykes. 9

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17 RÖHLICHOVÁ, M. (1962): O uzavřeninách a krách v Podolském komplexu ve východním okolí Písku. Čas. Mineral. Geol. 7, RÖHLICHOVÁ, M. (1964): To the genesis of granitic rocks on the southern margin of the Central Bohemian Pluton. Čas. Mineral. Geol. 9, 1 8. (English summary) SCHEUVENS, D. ZULAUF, G. (2000): Exhumation, strain localization, and emplacement of granitoids along the western part of the Central Bohemian shear zone (Bohemian Massif). Int. J. Earth Sci. 89, SLAVÍK, J. (1952): Těžké minerály ze zvětralin východní části středočeského plutonu. Sbor. Ústř. Úst. geol., Odd. geol. 19, SOKOL, A. DOMEČKA, K. BREITER, K. JANOUŠEK, V. (1998): Geochemical evaluation of rock complexes in the recently exposed part of the CentralBohemian Pluton. Zpr. geol. Výzk. v Roce 1997, SOKOL, A. DOMEČKA, K. BREITER, K. JANOUŠEK, V. (2000): The underground gas storage near Příbram a source of new information about granitoids of the Central Bohemian Pluton. Věst. Čes. geol. Úst. 75, 2, SOUČEK, J. (1971): Basic inclusions in the Červená granodiorite in the area of Písek. Acta Univ. Carol., Geol., Hejtman Vol. 1 2, SOUČEK, J. (1974): Styk červenského granodioritu s moldanubikem. Čas. Mineral. Geol. 19, (In Czech) STEINOCHER, V. (1969): Composition and petrology of the Central Bohemian Pluton. (German summary.) Rozpr. Čs. Akad. Věd, Ř. mat. přír. Věd 79, 100 pp. STOČES, B. (1918): Problémy středočeského žulového masivu. Sbor. Čes. Společ. zeměvěd. 24. SUK, M. (1973): Reconstruction of the mantle of the Central Bohemian pluton. Čas. Mineral. Geol. 18, SVOBODA, J. et al. (1964): Regionální geologie ČSSR, díl I. Český masív, Krystalinikum pp. Czech Geol. Survey, Prague. ŠMEJKAL, V. (1964): The absolute age of some plutonic and metamorphic rocks of the Bohemian Massif determinated by K/Ar method (part II). Sbor. geol. Věd, Geol. 4, (English summary) ŠMÍD, J. HOLUB, F. V. JANOUŠEK,V. PUDILOVÁ, M. ŽÁK, K. (2000): Geochemistry and petrogenesis of the Klatovy and Kozárovice granodiorites, SW part of the Central Bohemian Plutonic Complex. Zpr. geol. Výzk. v Roce 1999, ŠTĚPÁNEK, J. (1929): La diorite quartzifer pyroxene de Chleby dans la region de Benešov. Věst. St. geol. Úst. Čs. Republ. 5, (French summary) TAUSON, L. V. KOZLOV, V. D. PALIVCOVÁ, M. CIMBÁLNÍKOVÁ, A. (1977): Geochimičeskije osobenosti granitoidov sredněčešskogo plutona i nekotoryje voprosy ich genezisa. Sbor. Opyt korelacii magmatičeskich i metamorfičeskich parod Čechoslovakii i nekotorych rajonov SSSR, Nauka, Moskva. (In Russian) TOMEK, Č. (1974): The inverse gravimetric task and its application on morphology of the Central Bohemian Pluton. Čas. Mineral. Geol. 19, TOMEK, Č. (1975): Hlubší stavba a petrogeneze středočeského plutonu. In: Výzkum hlubinné stavby Československa. Sbor. referátů Loučná 1974, Geofyzika, Brno. TOMEK, Č. (1976): Deep structure, petrogenesis and emplacement of the Central Bohemian Pluton. In: Nagy, M. Ed.: Proc. 20th Geophysical Symposium, OMKDK-Technoinform Budapest. TURNOVEC, I. (2007): Žilná hornina starší než okolní granodiorit (Sedlčanský felzit). In: Breiter, K. Ed.: 3. sjezd Čes. geol. společ., Volary září 2007, 80. Czech Geol. Soc. Prague. ULRYCH, J. 1972): Leukokratní granitoidy ze styku středočeského plutonu s moldanubikem. Čas. Mineral. Geol. 17, VACHTL, J. (1932): Geologicko-petrografické poměry okolí Smolotel jv. Příbrami. Věst. St. geol. Úst. Čs. Reoubl. 8, 3. VACHTL, J. (1935): Geologicko-petrografické poměry území mezi Březnicí a Milínem jižně Příbrami. Věst. Král. Čes. Společ. Nauk 2, VEJNAR, Z. (1954): Geologicko-petrografické poměry kolineckého výběžku středočeského plutonu a krystalinických břidlic v jeho okolí. Sbor. Ústř. Úst. geol., Odd. geol. 21, (In Czech) VEJNAR, Z. (1972): Petrology of the Tužinka gabbro, Central Bohemian Pluton. Acta Univ. Carol., Geol.,

18 VEJNAR, Z. (1973): Petrochemistry of the Central Bohemian Pluton. Geochem. Methods Data 2, 116 pp. VEJNAR, Z. (1974): Trace elements in rocks of the Central Bohemian Pluton. Věst. Ústř. Úst. geol. 49, VEJNAR, Z. (1991): Styk moldanubika se středočeským plutonem v opěrném vrtu Milčice, jihozápadní Čechy. Věst. Čes. geol. Úst. 66, VEJNAR, Z. NEUŽILOVÁ, M. (1970): Application of Streckeisen s classification to plutonic rocks of the Bohemian Massif. Věst. Ústř. Úst. geol. 45, VEJNAR, Z. ŽEŽULKOVÁ, V. TOMAS, J. (1975): Granitoids from the water-supply gallery of the Želivka water-work, Central Bohemian Pluton (in Czech). J. Geol. Sci., Geol. 27, VLAŠÍMSKÝ, P. (1973): Stocks of basic and tonalitic rocks in the exocontact zone of the Central Bohemian Pluton in the Příbram area (English summary). Acta Univ. Carol., Geol. 1, VLAŠÍMSKÝ, P. (1975a): The geochemistry of the plutonic rocks of the Central Bohemian Pluton in the Příbram area. Acta Univ. Carol., Geol. 3, VLAŠÍMSKÝ, P. (1975b): Přehled intruzivního magmatismu v příbramské rudní oblasti. Sbor. Horn. Příbram, Geol. nerost. Sur., VLAŠÍMSKÝ, P. (1976): Development of dyke rocks in the Příbram area. Acta Univ. Carol., Geol. 4, VLAŠÍMSKÝ, P. (1982): The Příbram ore District: rock geochemistry and potential sources of hydrothermal mineralization (English summary). Sbor. geol. Věd, ložisk. Geol. Mineral. 24, VLAŠÍMSKÝ, P. (1984): Chemické složení hornin příbramské rudní oblasti. Vlastivěd. Sbor. Podbrdska 26, VLAŠÍMSKÝ, P. (1986): Stavba středočeského plutonu v důlních dílech v okolí Milína. Zpr. geol. Výzk. v Roce 1984, VLAŠÍMSKÝ, P. (1993): Některé poznatky z geologického výzkumu v důlních dílech v sz. části středočeského plutonu na Příbramsku. Geol. Průzk. 35, VLAŠÍMSKÝ, P. LEDVINKOVÁ, V. PALIVCOVÁ, M. WALDHAUSROVÁ, J. (1992): Relict stratigraphy and the origin of the Central Bohemian Pluton (English summary). Čas. Mineral. Geol. 37, VRÁNA, S. (1999): Dyke swarm of highly evolved felsitic alkali-feldspar granite porphyry near Milevsko, Central Bohemian Pluton. Věst. Čes. geol. Úst. 74, 1, VRÁNA, S. CHÁB, J. (1981): Metatonalite-metaconglomerate relation: the problem of the Upper Proterozoic sequence and its basement in the NE part of the Central Bohemian Pluton. J. Geol. Sci., Geol. 35, WALDHAUSROVÁ, J. (1984): Proterozoic volcanic and intrusive rocks of the Jílové Zone in Central Bohemia. Krystalinikum 17, WALDHAUSROVÁ, J. LEDVINKOVÁ, V. (2004): Petrogenesis of Variscan granitoids in the Central Bohemian Pluton in the Příbram area. Krystalinikum 30, YAZDI, M. KOŠLER, J. PERTOLD, Z. (1997): U-Pb isotope geochronology and geochemical characteristics of the rocks from Voltuš area in the Rožmitál block, Czech Republic. J. Czech. Geol. Soc. 43, 77. ZOUBEK, V. (1953): Geologické podklady k projektu údolní přehrady na Vltavě u Zlákovic. Geotechnica 15, ŽÁK, J. HOLUB, J. V. KACHLÍK, V. (2006): Magmatic stoping as an important emplacement mechanism of Variscan plutons: evidence from roof pendants in the Central Bohemian Plutonic Complex (Bohemian Massif). Int. J. Earth Sci. (Geol. Rdsch.) 95, ŽÁK, J. HOLUB, J. V. VERNER, K. (2005): Tectonic evolution of a continental magmatic arc from transpression in the upper crust to exhumation of mid-crustal orogenic root recorded by episodically emplaced putons: the Central Bohemian Plutonic Complex (Bohemian Massif). Int. J. Earth Sci. (Geol. Rdsch.) 94, ŽÁK, J. SCHULMANN, K. HROUDA, F. (2001): Syn-tectonic emplacement of island-arc calc-alkaline magmas during oblique transpression: SE margin of the Teplá-Barrandian Zone (Bohemian Massif). Geolines 13, ŽÁK, J. SCHULMANN, K. HROUDA, F. (2005): Multiple magmatic fabrics in the Sázava pluton (Bohemian Massif, Czech Republic): a result of superposition of wrench-dominated regional transpression on final emplacement. J. Struct. Geol. 27,

19 ŽÁK, K. VLAŠÍMSKÝ, P. SNEE, L. W. (1998): Datování vybraných hornin příbramské rudní oblasti metodou 40 Ar/ 39 Ar a otázka stáří polymetalické hydrotermální mineralizace. Zpr. geol. Výzk. v Roce 1997, ŽEŽULKOVÁ, V. (1970): Ke genezi benešovského granodioritu. Sbor. geol. Věd, Geol. 21, ŽEŽULKOVÁ, V. (1982): Dyke rocks in the southern part of the Central Bohemian Pluton. Sbor. geol. Věd, Geol. 37, (In Czech) ŽEŽULKOVÁ, V. (1982): Granitoids of the so-called Dehetník type in the Central Bohemian Pluton. Věst. Ústř. Úst. geol. 57, (English summary) ŽEŽULKOVÁ, V. RUS, V. TURNOVEC, I. (1977): Žilné horniny krásnohorsko-sedlčanské oblasti a jejich vztah k Sb-Au zrudnění. Sbor. geol. Věd, Geol. 29, CENTRAL BOHEMIAN PLUTON (CBP) Regional position: the CBP is associated with crustal-scale Variscan shear zone at the boundary of the Barrandian Zone (the Teplá-Barrandian Unit) and the Moldanubian Zone. Geochemically corresponds to volcanic-arc granitoids. The CBP s.s. is represented in this review by three principal magmatic suites of (Janoušek et al. 2000b):The Sazava Suite represented by the Sázava Tonalite with associated mafic bodies and the Požáry Trondhjemite is a dominant rock association of CBP (GA group according to Holub et al. 1997). The Blatná Suite comprises the Blatná Granodiorite and Kozárovice Granodiorite with associated granitic types and facies (HK group according to Holub et al. 1997). The Maršovice Suite consists of the Maršovice and Kozlovice Granodiorite (AIG group according to Holub et al. 1997). Rock types: 1. Gabbroids (~ 40 km 2 ): pyroxene-hornblende gabbro, gabbrodiorite to diorite. Main bodies are Pecerady, Todice, Lešetice, Lučkovice (melamonzonite) and Tužinka Gabbros. 2. Sázava Tonalite (~ 250 km 2 ): hornblendebiotite tonalite, quartz diorite and granodiorite. 3. Blatná Granodiorite (~ 630 km 2 ): biotitehornblende granodiorite. 4. Červená Granodiorite (~ 185 km 2 ): biotitehornblende granodiorite. Marginal (mafic) facies of the Blatná Granodiorite, finger-like apophyses into moldanubian gneisses. 5. Požáry Trondhjemite (~ 60 km 2 ): quartz diorite, biotite granodiorite to trondhjemite (isometric intrusion at NW contact of the CBP). 6. Něčín Granodiorite (~ 3 km 2 ): leucocratic granodiorite with biotite., 7. Marginal Granite (~ 35 km 2 ): porphyritic coarse-grained biotite ± hornblende granodiorite to granite (marginal facies = biotite granite). 8. Mrač Granodiorite (~ 1 km 2 ): biotite granodiorite. Oval intrusion in the Sazava Tonalite. 9. Zálužany Quartz monzonite (~ 1 km 2 circular intrusion): intrusion in the Kozárovice Granodiorite. 10. Kozárovice Granodiorite (~ 230 km 2 ): hornblende-biotite granodiorite to quartz monzonite. 11. Těchnice Granodiorite (~ 70 km 2 ): porphyritic biotite/hornblende granodiorite, porphyritic facies of the Kozárovice Granodiorite (transition into the Kozárovice Granodiorite and Sázava Tonalite). 12. Dehetník Granodiorite (~ 50 km 2 ): biotitehornblende granodiorite (a member of the Blatná Suite). 13. Zavlekov Granodiorite: biotite-hornblende granodiorite (intrusion in the Kozárovice Granodiorite). 14. Maršovice Granodiorite (~ 45 km 2 ): biotite ± muscovite granodiorite. 15. Zbonín Granite (late-orogenic): porphyritic biotite ± muscovite monzogranite. 16. Kosova Hora Granodiorite (~ 5 km 2 ): biotite ± muscovite porphyritic granodiorite to monzogranite. 17. Chleby Quartz diorite (small bodies). Local facies and/or variants: Slapy, Orlík, Vltava, Granodiorite, Milín Granodiorite, Bělčice Granite, Červená Granodiorite, Vitín Granodiorite (older than the Těchnice Granodiorite), Zvíkov Granodiorite, and Hudčice Granodiorite. Size and shape (in erosion level): triangular outcrop of the asymmetric ethmolith (~ 1,500 km 2 ) and several satellite stocks at the NW exocontact (Padrť, Bohutín and Petráčkova Hora (Rožmitál) Stocks). Sharp sub-vertical (50 80 SE) contact plane in NW. The depth of magma solidification of the CBP is about 5 7 km (Dudek et al. 1991). 16

20 Age and isotopic data: K-Ar analyses on biotites and hornblendes from a variety of granitoids yielded ages in the range 360 to 324 Ma. Sázava Tonalite 349 ± 12 Ma (Pb-Pb zircon), 354 ± 3.5 Ma (U-Pb zircon), Kozárovice Granodiorite ± 1.6 Ma (SHRIMP U-Pb zircon), Blatná Granodiorite 331 ± 9 Ma (Rb-Sr whole rock), 346 ± 10 Ma (Pb-Pb zircon), ± 1.6 Ma (SHRIMP U-Pb zircon), Kozárovice Granodiorite ± 1.6 Ma (U-Pb zircon), Požáry Trondhjemite 351 ± 11 Ma (Pb-Pb zircon), Vrančice Quartz Diorite 342 ± 4 Ma (Ar-Ar hornblende), Hornblendite enclave in the Vrančice Quartz Diorite Ma (Ar-Ar biotite), 342 ± 4 Ma (Ar-Ar amphibole), Gabbrodiorite enclaves in the Bohutín Tonalite ± 0.5 Ma (Ar-Ar biotite). Chronologic succession (from older to younger rock type): Gabbroids Sázava Tonalite Blatná Granodiorite Požáry Trondhjemite Něčín Granodiorite Marginal Granite. An age of the CBP cooling to 500 C (Ar-Ar amphibole) is Ma and under 300 C is 338 Ma (Ar-Ar biotite). Contact aureole: a thermal aureole is developed in a total width ranging from about 100 m to more than 1 km. Maximum temperatures of contact metamorphism correspond to the amphibolehornfels facies. Relicts of Neoproterozoic to Devonian sediments and volcanic rocks form large thermally metamorphosed pendants at the roof of the CBP plutonic rocks. Geological environment: the adjacent part of the Barrandian Unit comprises the Neoproterozoic slates, mudstones, greywackes, conglomerates, metabasalts and metarhyolites and Lower Palaeozoic, mainly Cambrian greywackes, sandstones and conglomerates, locally also Ordovician to Lower Devonian sediments. Zoning: Regional scale: CBP distinct compositional zoning trending E-W and SE-NW. Stratification of the magma chamber is indicated by interlayers of the mafic and granitoid rocks with preserved original boundaries and interfaces. Gently dipping to subhorizontal mafic layers are chilled against and separated by much thinner layers of granitoid, which often displays textures typical for cumulate rocks. Local scale: The Sázava Tonalite (in the Slapy Promontory) shows the compositional zoning (more slightly mafic towards the periphery). Compositional zonation of the Blatná intrusion amphibole-biotite common mainly at the margins to biotite commonly in the centre. Mineralization: Au, Au Sb, Ag-Pb-Zn, U, mostly vein-type economic deposits (e.g. the Příbram, Krásná Hora and Jílové historical mining districts). Heat production (μwm -3 ): Blatná Granodiorite 3.1, 3.94, Sázava Tonalite 2.9, Požáry Trondhjemite 1.7, 2.17, Červená Granodiorite 3.3, Marginal Granite , Těchnice Granodiorite 4.6. Fig Central Bohemian Pluton ABQ and TAS diagrams: 1 Sázava Tonalite, 2 Požáry Trondhjemite, 3 Gabbroids, 4 Kozárovice Granodiorite,5 Local facies of the Sázava Tonalite (e.g. Vltava Granodiorite). References DUDEK, A. FROLÍKOVÁ, I. NEKOVAŘÍK, Č. (1991): The depth of intrusion of Hercynian granitoid plutons in the Bohemian Massif. Acta Univ. Carol. Geol., Kettner Vol. 3 4, (In Czech) 17