 | Nowak, Izabella, Żelaźniewicz, Andrzej, Dörr, Wolfgang, Franke, Wolfgang, Larionov, Alexander N. (2011) The Izera metabasites, West Sudetes, Poland: Geologic and isotopic U–Pb zircon evidence of Devonian extension in the Saxothuringian Terrane. Lithos, 126 (3) 435-454 doi:10.1016/j.lithos.2011.07.006 | Journal (article/letter/editorial) | | i t h o s The Izera metabasites, West Sudetes, Poland: Geologic and isotopic U–Pb zircon evidence of...Geologicznych PAN, Podwale 75, PL-50449 Wrocław, Poland Instytut Geologii Uniwersytetu Adama Mickiewicza...Mickiewicza, Maków Polnych 16, PL-61606 Poznań, Poland Geologisch-Paläontologisches Institut der Johann-Wolfgang...Geologicznych PAN, Podwale 75, PL-50449 Wrocław, Poland. Tel.: + 48 71 3416344; fax: + 48 71 3376342. E-mail...MGCR (Mid-German Crystalline Rise); MSZ (Moravo-Silesian Zone, vertical ruling); RHZ (Rhenohercynian Zone); |  | | Journal (article/letter/editorial) | | Oligocene to Lower Miocene Krosno Formation sandstones in the Skole Nappe (southeast Poland): New insights...Geological Sciences, Jagiellonian University, Kraków, Poland Heavy minerals have been studied in order to address...University, Kraków, Poland. Email: dorota.salata@uj.edu.pl Skole Nappe (Poland). The heavy mineral composition...metamorphic origin, mainly from pelites affected by amphibolite facies conditions. The Krosno Formation was deposited...Handling Editor: C. Frassi between the Skole and Silesian basins. Chemical composition of provenance sensitive |  | | Journal (article/letter/editorial) | | close to 2 m and are asymmetrically enveloped by amphibolite which is the host rock. Both, host rock and ore...to 90 vol%) with Mg# of 0.54–0.62 (pargasite, tschermakite and magnesiohornblende), Ab64An35K0.1 feldspar... In this stage, the Mg/Fe ratio was remarkably lower and the oxygen fugacity higher causing not only...(Fig. 2). According to Cháb et al. (1988), the Silesian part of the controversial area suffered at least...340–300 Ma (Maluski et al., 1995). Within the Silesian part of the Velké-Vrbno Unit deposit other than |  | | Journal (article/letter/editorial) | | and its metamorphic envelope (West Sudetes, SW Poland) ANDRZEJ KOZŁOWSKI, SŁAWOMIR ILNICKI*, WITOLD MATYSZCZAK...Warsaw, Al. Żwirki i Wigury, 93, PL-02-089 Warszawa, Poland. *E-mail: slawomir.ilnicki@uw.edu.pl ABSTRACT:...and its metamorphic envelope (West Sudetes, SW Poland) Acta Geologica Polonica, 66 (3), 451–471. Warszawa...322–312 Ma) and its surroundings in West Sudetes (SW Poland) have provided data on Nb-Ta-REE minerals from... KARKONOSZE GRANITE AND ITS METAMORPHIC ENVELOPE, SW POLAND geochemical features, the isotope age of the distinguished |  | | Journal (article/letter/editorial) | | occurrences of the Desná Unit NE of the Sobotín Amphibolite Massif, Silesicum, Czech Republic: A reply to...Garnetites Coticules Banded iron-formations Sobotín Amphibolite Massif Desná Unit Silesicum Controversial genesis...evolution of Mn-rich garnetites (=coticules) in the Silesian Desná Unit which are closely associated with Fe-rich...conclusion that these are connected with the Devonian amphibolite of the Sobotín Massif. The older garnetites were...in ±NE direction within the para-gneiss of the Silesian Desná Unit, namely in the immediate neighbourhood |  | | Journal (article/letter/editorial) | | the formation of actinolite from pre-existing tschermakite and magnesiohornblende, albite, carbonate and...rocks of the Desná Dome, which is a part of the Silesian Domain (NE part of the Bohemian Massif). From...view, Schulmann and Gayer (2000) subdivided the Silesian Domain into four units with the Desná Dome (or... Genesis of the magnetite mineralizations in the Silesian Desná Group, Czech Republic The ore was considered... 2 Rock consisting of magnetite and amphibole (lower part) in contact to metahornblendite. Transmitted |  | Hanžl, Pavel, Janoušek, Vojtěch, Soejono, Igor, Buriánek, David, Svojtka, Martin, Hrdličková, Kristýna, Erban, Vojtěch, Pin, Christian (2019) The rise of the Brunovistulicum: age, geological, petrological and geochemical character of the Neoproterozoic magmatic rocks of the Central Basic Belt of the Brno Massif. International Journal of Earth Sciences, 108 (4) 1165-1199 doi:10.1007/s00531-019-01700-2 | Journal (article/letter/editorial) | | Devonian–Carboniferous sediments of the Moravian-Silesian Zone and flysch nappes of the Outer Carpathian...Vavrdová (2004) described marked similarities of Lower Cambrian acritarch assemblages from the southern...Devonian to Carboniferous sediments of the Moravian-Silesian Zone was tectonically reworked (Kettner 1949;...of Želešice at the SE tip of the DZ (Želešice amphibolite). Granodiorites and granites of the Western Granodiorite...lineation in the Central Basic Belt. Projection on lower hemisphere, step of contour 2 sigma the quartz |  | | Journal (article/letter/editorial) | | from the Sowia Dolina, Karkonosze-Izera massif, SW Poland S. ILNICKI* Institute of Geochemistry, Mineralogy...Warsaw, 02-089 Warszawa, Al. Żwirki i Wigury 93, Poland [Received 28 August 2010; Accepted 11 February...zoning from Mg-hornblende and actinolite to tschermakite, and then to Mg-hornblende (or actinolite)....exhumation), took place under epidote-amphibolite then amphibolite facies conditions. The last stage partly...lithotectonic units in the Karkonosze-Izera massif in SW Poland (Fig. 1; Mazur, 1995; Mazur and FIG. 1. Geological |  | | Book (volume) | | Hornblendes Edenite—Ferro-edenite Tschermakite—Ferro-tschermakite Pargasite—Ferro-pargasite Magnesi...Minerals, three new minerals from the Laytonville Quarry, California were named by S. O. Agrell after the...Ca,(L,M,)Si;Al,0,,(OH), Magnesio-hornblende = Tschermakite Ca,L;Sig0,,(OH), Tremolite ————> IAI Fig...rro-actinolite Ca>(Mg,Fe**)s[Sig022](OH,F)» Tschermakite Ca>(Mg,Fe2*)3(Al,Fe**)2[Sis Al,O7.](OH,F)2...amphiboles the progression tremolite — hornblende —tschermakite involves increasing substitutions in the C andT |  | RÖtzler, , Carswell, , Gerstenberger, , Haase, (1999) Transitional blueschist-epidote amphibolite facies metamorphism in the Frankenberg massif, Germany, and geotectonic implications. Journal of Metamorphic Geology, 17 (1) 109-125 doi:10.1046/j.1525-1314.1999.00183.x | Journal (article/letter/editorial) | | 16, 109–125 Transitional blueschist–epidote amphibolite facies metamorphism in the Frankenberg massif...a final low-pressure overprint which spanned amphibolite facies to prehnite–actinolite facies temperatures...Iberian massif is thought to have formed in the lower part of a thrust pile at c. 330 Ma (Gil Ibarguchi...stage (c. 1050 °C, 20–22 kbar) to low-pressure amphibolite facies conditions (Rötzler, 1992; Hagen et al...Ordovician to Upper Devonian, and, at the top, suspected Lower Carboniferous flysch (Heuse, 1994; and references |  | Oberti, Roberta, Boiocchi, Massimo, Hawthorne, Frank C., Ciriotti, Marco E. (2018) Ferro-tschermakite from the Ploumanac'h granitic complex, Brittany, France: mineral description. European Journal of Mineralogy, 30 (1) 171-176 doi:10.1127/ejm/2018/0030-2700 | Journal (article/letter/editorial) | | 171–176 Published online 27 February 2018 Ferro-tschermakite from the Ploumanac’h granitic complex, Brittany...The mineral description is provided for ferro-tschermakite, ideally A☐BCa2C(Fe2þ 3 Al2 ) (Si6Al2)O22 (OH)2...Bâtiment et Granit de Ploumanac’h northern granite quarry, La Clarté, Perros-Guirec, Ploumanac’h granitic...15Al1.85)S=8.00O22W(OH1.94F0.06)S=2.00. Ferro-tschermakite is biaxial (–), with a = 1.666(2), b = 1.680(2)...2.012, 24, (4 0 2; 3 5 1). Key words: ferro-tschermakite; amphibole; electron-microprobe analysis; optical |  | | Journal (article/letter/editorial) | | retrograde metamorphism in the Niedźwiedź Amphibolite Massif (SW Poland): from incipient melting to pumpellyite...figures and 6 tables Abstract: The Niedźwiedź Amphibolite Massif (eastern part of the Fore Sudetic Block...Block, NE Bohemian Massif) consists of foliated amphibolite, which contains subordinate irregular nests and...Massif is the exhumed part of a thickened Variscan lower crust. Retrograde metamorphism connected with foliation...metamorphic phase assemblages by minerals stable at lower metamorphic conditions. The degree of replacement |  | LEXA, O., STIPSKA, P., SCHULMANN, K., BARATOUX, L., KRONER, A. (2005) Contrasting textural record of two distinct metamorphic events of similar P-T conditions and different durations. Journal of Metamorphic Geology, 23 (8) 649-666 doi:10.1111/j.1525-1314.2005.00601.x | Journal (article/letter/editorial) | | earlier Cambro-Ordovician fabrics of a banded amphibolite complex. The analysis of crystal size distribution...values obtained from the Cambro-Ordovician banded amphibolite complex. The spatial distribution of amphibole...plagioclase shows intense mechanical mixing for lower-temperature mylonitic metagabbros. In high-temperature...west from the Neo-Proterozoic continental margin (Silesian domain) in the east (Fig. 1), at the eastern margin...2000a,b). The Staré Město belt consists of a lower crustal complex which (a) was later affected by |  | | Journal (article/letter/editorial) | | (1997, 1998) have shown that the exhumation of lower crustal rocks may also be related to compressional...fabrics during exhumation due to ductile extrusion of lower crustal rocks between two rigid walls (Merle & Guillier...garnet–omphacite granulite locally retrogressed to amphibolite and interlayered with felsic fine-grained, Ky–Kfs...degree of anatexis and an increasing number of amphibolite bodies, between several tens of cm and several...Klemd & Bröcker, 1999; Kryza et al., 1996). Amphibolite facies retrogression in different domains of |  | | Journal (article/letter/editorial) | | that approaches the closest to hypothetical tschermakite comes from a kyanite-bearingaluminous high-...a c h to the h y p o t h e t i c a l p u r e tschermakite Ca2MgaA12Si6A12(OH)zO2z, which contains 2.oo...garnet, and rutile. Nowa Wies, Snieznik klodzki, Poland. H20 + (o'69 %) and the total (99"34 %) are low...B. V. Govinda Rajulu and A. Shariff (1966). Amphibolite. Khushalnagar, Coorg, Mysore State. H 2 0 + (o'72... Geol. Karte Sehweiz. N.F. 132, 89. Epidote amphibolite vein in serpentinite. Stocknubel, Switzerland |  | | Journal (article/letter/editorial) | | cation-exchange equilibria at the greenschist/amphibolite facies boundary. Enrichment in Ti at low-pressures...mediumpressure is due to overstepping of the tschermakite-enriching equilibrium. At low pressures this...occurs, but the equilibrium tschermakite-content in the amphibole is much lower for a given amount of overstepping...at low pressures is due to convergence of the tschermakite- and anorthite-enriching equilibria with decreasing...generally used to define the greenschist-to-amphibolite facies transition (e.g. Turner 1968). In recent |  | | Journal (article/letter/editorial) | | disequilibrium processes across the greenschist–amphibolite transition zone in metabasites Paul G. Starr1...metamorphosed basalts across two greenschist-to-lower amphibolite facies sequences (Flin Flon, Manitoba and... At Flin Flon and Rossland, the greenschist–amphibolite facies transition occurs over a narrow spatial...coexisting albite and oligoclase, in the lowermost amphibolite facies. However, actinolite and hornblende show...are attributed to disequilibrium preservation of lower grade epidote compositions to higher grade conditions |  | Janoušek, V., Vrána, S., Erban, V., Vokurka, K., Drábek, M. (2008) Metabasic rocks in the Varied Group of the Moldanubian Zone, southern Bohemia - their petrology, geochemical character and possible petrogenesis. Journal of GEOsciences, 53 (1) 31-64 | Journal (article/letter/editorial) | | Bohemia). The amphibolites are dominated by amphibolite-facies mineral assemblages of mainly tschermakitic...rocks subjected to a high-grade (up to upper amphibolite-facies) metamorphic overprint (Floyd and Winchester...gneisses and subordinate carbonate rocks, in the amphibolite-facies Varied Group, particularly at the contact... 1995) and the Mesoproterozoic Dobra gneiss in Lower Austria (Gebauer and Friedl 1994; Friedl et al....high-grade Gföhl Unit, with its typical occurrence in Lower Austria, contains mainly nebulitic biotite migmatites |  | | Journal (article/letter/editorial) | | metamorphic rocks of greenschist to epidote amphibolite or amphibolite facies have tended to support this (e...(oligoclase-andesine) appears at the same time as~ or rarely at lower temperature than, blue-green hornblende with increasing...prcssure terrains of greensehist, epidote amphibolite and amphibolite facies, in which the transition from...actinolite to blue-green hornblende may occur at lower grade than, or at the same grade as, the appearance...glaucophane schist, greensc]hist, eclogite and epidote amphibolite facies, in which there may be a complete transition |  | | Journal (article/letter/editorial) | | 14, 1992 Summary Several formations within the lower part of the Dalradian Appin Group are characterised...towards alumino-tschermakite [MgSi ~ AFiA1iv] and from tremolite towards ferri-tschermakite [MgSi ~ FeViAl~V]...towards the ferro-actinolite, edenite, alumino-tschermakite and ferritschermakite end-members. These distinctive...contemporaneous igneous activity, commencing in lower Islay Subgroup time and erupting periodically before...reaching a peak during Tayvallich Subgroup and lower Southern Highland Group times, gave rise to sequences |  | | Journal (article/letter/editorial) | | 1993, 11, 757-773 Petrological evolution of amphibolite shear zones, Cheyenne Belt, south-eastecn Wyoming...Blacksburg, VA 2461, USA ABSTRACT Metre-scale amphibolite boudins in the Cheyenne Belt of south-eastern...relatively undeformed amphibolite with a relict igneous texture to mylonitic amphibolite with an L-Stectonic...and ilmenite. Within the relatively undeformed amphibolite, amphibole and plagioclase have wide compositional...and Mg that can be modelled as progress along tschermakite, edenite and FeMg-, exchange vectors from tremolite |  | | Journal (article/letter/editorial) | | to the higher temperature part of the epidote amphibolite facies. There is no regular relation between...whereas this critical assembl age of the epidote amphibolite facies is prac tically lacking in the latter...but tremolite-actinolite is pro duced by the amphibolite facies metamor phism in the rocks of appropriate...lavas. study about amphibolites ments of a quarry in is derived this portion high) Machiya...hornblendes the grade to the epidote higher amphibolite facies. The rocks mineral studied Specimen | | | Journal (article/letter/editorial) | | solid solution was discussed in the system of tschermakite-pargasite-eckermanite-glaucophane under the...properties have not been investigated in detail. At lower temper atures, Black (1973) and Toriumi (1975) established...solvus in the systems of actinoliteglaucophane-tschermakite and actinoliteglaucophane-magneisoriebeckite...and they 230 M. Tagiri concluded that both tschermakite and glaucophane molecules in calciferous am...con trary events, which are the increasing of tschermakite and glaucophane molecules and the decreasing |  | | Journal (article/letter/editorial) | | of charcoal taken from the base of the Neolithic quarry, where a large amount of waste from making of semi-finished...tool production Archaeological finds in Neolithic quarry sites in the Ji zera Mountains were discovered...contact metamorphism (geological hammer for scale – lower right quadrant). 4.1. Jistebsko The work done by...coarse tools made from metabasites are present. The quarry field No. 1 covers an area of 154 00 m2 and is...largest preserved relic of Neolithic quarrying. The quarry field No. 2 is situated right on the top of Maršovice |  | | Journal (article/letter/editorial) | | amphiboles studied is from the lower-medium range of the epidote amphibolite facies (comprehensively defined)...are stable at high grade, were not found at the lower grade. At both grades, Al shows good overall correlation...between tremolite and hornblende analyses from the lower grade rocks does not necessarily define a solvus...rocks metamorphosed in the lowest T range of the amphibolite facies as developed in the Central Abukuma Plateau...(garnet and oligoclase zone) of Barrovian type amphibolite facies in southern New Zealand. They gave two |
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