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Geolines Volume 23 - Coverpage

 

The 9th IEC field trips in the Bohemian Massif are designed to illustrate the geological relations, lithological and geochemical features, and metamorphic evolution of different high-pressure and ultrahigh-pressure crystalline segments that formed by subduction and collision during the Variscan orogeny. The field trips will transect the orogen, and participants will have an opportunity to examine various lithologies and PT evolution of HP and UHP crustal and mantle rocks, which were exhumed along subduction channels and subsequently reequilibrated under HT granulite facies conditions in the orogenic root.

The two-day pre-conference field trip will visit the main HP and UHP localities in the Saxothuringian zone of the Bohemian Massif, beginning in the high-grade rocks at Saidenbach, including coesite- and microdiamond-bearing gneisses, continuing in garnet peridotite at Zöblitz in  Germany, and ending in the low-temperature eclogite at Meluzína in the Czech part of the Erzgebirge. The main focus will be to understand the tectonic and metamorphic evolution of the Saxothuringian zone during the Variscan orogeny.

During the one-day mid-conference field trip, we will visit eclogites in the ophiolitic Marianské Lázně Complex, which is located between the Saxothuringian zone and Tepla-Barandian unit. It is a polymetamorphic complex containing eclogite and amphibolite, in which the main HP and subsequent amphibolite facies metamorphism occurred during an early stage of the Variscan orogeny. In addition to eclogite, serpentinized spinel peridotite and metagabbro will be examined during the field trip.

The four-day post-conference field trip will traverse more then 200 km in the Moldanubian zone, focussing on high-pressure granulites that contain lenses and boudins of eclogite, garnet peridotite and garnet pyroxenite. The field trip will start in the southern Bohemian granulite massif in the Czech Republic, continue in the Dunkledsteinwald in Austria, progress along the eastern border of the Moldanubian zone to the north in the Czech Republic, and end in the central part of the Moldanubian zone in the Kutná Hora complex. In addition to HP/UHP mafic and ultramafic rocks in HP felsic granulites of the Gföhl Unit, we will visit selected eclogites in the Monotonous Unit of the Moldanubian zone.

Shah Wali Faryad and L. Gordon Medaris, Jr.

HIGH-PRESSURE/ULTRAHIGH-PRESSURE ROCKS IN THE BOHEMIAN MASSIF

Preface - Page 9

    

Jiří KONOPÁSEK
Tectonic Position of High-Pressure Rocks in the Bohemian Massif - Page 11

Hans-Joachim MASSONNE
Occurrences and PT Conditions of High and Ultrahigh Pressure Rocks in the Bohemian Massif - Page 18


PRE-CONFERENCE FIELD TRIP: ERZGEBIERGE MOUNTAINS, GERMANY; AUGUST 4–5, 2011

Hans-Joachim MASSONNE
German Part of the Saxonian Erzgebirge - Page 29
Stop 1-1 (Day 1). Eclogite, NW of Lauta - Page 30
Stop 1-2 (Day 1). Eclogite, SE of Eppendorf - Page 33
Stop 1–3 (Day 1). HP and UHP Rocks at the Saidenbach Reservoir - Page 37
Stop 1-3 – A (Day 1). Eclogite at the Northern Shore - Page 38
Stop 1-3 – B (Day 1). Saidenbachite at the Eastern Shore - Page 43
Stop 1-3 – C (Day 1). Eclogite at the Eastern Shore - Page 47
Stop 1-3 – D (Day 1). Layered Granulitic Gneiss, Former Small Quarry - Page 49
Alternative Stop 1-3 – E (Day 1). Saidenbachite in the Forest - Page 50
Stop 2-1 (Day 2). Garnet Peridotite at Zöblitz - Page 51
Stop 2-2 (Day 2). Eclogite at Siebensäure - Page 54

Shah Wali FARYAD, J. KONOPÁSEK and H. KLÁPOVÁ
Eclogites from the Czech Part of the Erzgebirge Complex - Page 60
Stop 2-3 (Day 2). Eclogite, Meluzína - Page 61
Stop 2-4 (Day 2). Eclogite, Měděnec - Page 63


MID-CONFERENCE FIELD TRIP: THE MARIANSKÉ LÁZNĚ COMPLEX, CZECH REPUBLIC; AUGUST 8, 2011

Peridotite and Metabasic Rocks of the Marianské Lázně Metaophiolite Complex - Page 71

L. Gordon MEDARIS, Jr., Emil JELÍNEK, Shah Wali FARYAD, and Bradley S. SINGER
The Eclogitic Mariánské Lázně Complex: A Vestige of an Early Paleozoic Ocean - Page 71
Stop 3-1 (Day 3). Serpentinite, Small Abandoned Quarry, 1km NW Sítiny - Page 78
Stop 3-2 (Day 3). Eclogite, Louka (Roadcut with Meter-Scale Boudin of Eclogite,
surrounded by Layered Garnet Amphibolite – Retrograded Eclogite) - Page 79
Stop 3-3 (Day 3). Amphibolite and Feldspar Veins, Tisová (Roadcut in Amphibolite) - Page 79
Stop 3-4 (Day 3). Eclogite, Tisova (Small, Abandoned Quarry in Eclogite) - Page 81
Stop 3-5 (Day 3). Metagabbro, Výškovice (Abandoned Quarry in Metagabbro) - Page 81


POST-CONFERENCE FIELD TRIP: SOUTH-EASTERN BOHEMIA, CZECH REPUBLIC; AUGUST 10–13, 2011

HP/UHP Metamorphic Rocks in the Moldanubian Zone - Page 87

Shah Wali FARYAD, Jan FRANĚK, Stanislav VRÁNA and Martin SVOJTKA
South Bohemian HP Granulites with Lenses of HP/UHP MaficandUltramaficRocks- Page 88

Shah Wali FARYAD, Jan FRANĚK and Stanislav VRÁNA
Stop 4-1 (Day 4). Garnet Peridotites and Pyroxenites, Quarry Pod Libínem - Page 92

Martin SVOJTKA, Takao HIRAJIMA, Stanislav VRÁNA and Kosuke NAEMURA
Stop 5-1 (Day 5). Granulite and Garnet Peridotite, Plešovice Quarry, 5 km NNE of Český Krumlov - Page 93

Martin SVOJTKA, Tomoyuki KOBAYASHI and Takao HIRAJIMA
Garnet-Rich Gneisses (Kinzigites) of the Lhenice Shear Zone, Ktiš Quarry - Page 95
Stop 4-2 (Day 4). Garnet-Rich Gneisses (Kinzigites), Ktiš Quarry, 1 km NNE of Ktiš Village - Page 96
Eclogite and Garnet Clinopyroxenite from Monotonous Unit - Page 100
Stop 4-3 (Day 4). Eclogite, Světlík-Suš - Page 101

Shah Wali FARYAD and Stanislav VRÁNA
Eclogite, Garnet Peridotite, Garnet Pyroxenite and HP Granulite in the Gföhl Unit - Page 106

Shah Wali FARYAD, Martin RACEK and Ondrej LEXA
Stop 5-2 (Day 5). Garnet Peridotite and Garnet Pyroxenite, Granulite Quarry in Meidling-im-Tal,
6 km South from Krems am der Donau - Page 111
Stop 5-3 (Day 5). Garnet Peridotites, Granulite Quarry Close to Karlstetten,
9 km Northwest from St. Pölten - Page 112

L. Gordon MEDARIS, Jr. and Emil JELÍNEK
The Mohelno and Nové Dvory Peridotites: Two Contrasting Types of Peridotite in the Gföhl Unit - Page 115
Stop 6-1 (Day 6). Nové Dvory Garnet Peridotite and Eclogite, ~400 m SW of the Nové Dvory Farmhouse,
2 km WNW of the Town of Rouchovany - Page 119
Stop 6-2 (Day 6). Mohelno Spinel Peridotite, Outcrop along the North Bank of the Jihlava River,
~870 m Upstream from the Highway 392 Bridge - Page 120
Stop 6-3 (Day 6). Mohelno Garnet Peridotite, Outcrop along the North Bank of the Jihlava River,
~130 m Downstream from the Highway 392 Bridge - Page 121

Lukáš ACKERMAN, Emil JELÍNEK, L. Gordon MEDARIS Jr.
Stop 6-4 (Day 6). Peridotite and Pyroxenite Boudins in the Bory Granulite, Horní Bory - Page 123

Shah Wali FARYAD, Matěj MACHEK, Radka NAHODILOVÁ and David DOLEJŠ
HP/UHP Rocks in the Kutná Hora Complex and Adjacent Monotonous Unit - Page 127
Stop 7-1 (Day 7). Garnet Peridotite and Eclogite, Úhrov, ca. 1 km East from the Village of Úhrov - Page 128
Stop 7-2 (Day 7). Garnet Peridotite, Garnet Pyroxenite, Garnetite and Eclogite.
West Bank of the Doubrava River, ca 2 South from the Village of Úhrov - Page 130
Stop 7-3 (Day 7). Eclogite and Granulite, Spačice - Page 131
Stop 7-4 (Day 7). Eclogite, Borek - Page 133

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