Results 31 to 40 of about 12,638 (229)

Temperatures and Cooling Rates Recorded by the New Caledonia Ophiolite: Implications for Cooling Mechanisms in Young Forearc Sequences

Geochemistry, Geophysics, Geosystems, 2022
To unveil how forearc lithosphere cools and re‐equilibrates, we carried out a comprehensive geothermometric investigation of the New Caledonia ophiolite, which represents a rare example of proto‐arc section generated during subduction infancy.
Arianna Secchiari, Alessandra Montanini, Dominique Cluzel   +2 more
doaj   +1 more source

A mountain slope deformation in an alpine metaophiolitic massif (Ligurian Alps, Italy)

Journal of Maps, 2021
Deep-seated gravitational slope deformation (DsGSD) represents a relevant geological-geomorphological feature of the landscape and has drawn scientific attention for the past several decades.
F. Faccini, L. Federico, S. Torchio, A. Roccati, G. Capponi, L. Crispini   +5 more
doaj   +1 more source

西南日本の熱変成超苦鉄質岩体中のかんらん石と輝石の組成変化に関する覚書 [PDF]

, 2010
This short article presents some diagrams showing the compositional variations of primary and metamorphic olivine, orthopyroxene and clinopyroxene in peridotites and serpentinites from thermally metamorphosed ultramafic complexes in SW Japan. In contrast
Nozaka, Toshio
core   +1 more source

Constraints on Early Paleozoic Deep‐Ocean Oxygen Concentrations From the Iron Geochemistry of the Bay of Islands Ophiolite

Geochemistry, Geophysics, Geosystems, 2022
The deep ocean is generally considered to have changed from anoxic in the Precambrian to oxygenated by the Late Paleozoic (∼420–400 Ma) due to changes in atmospheric oxygen concentrations.
Daniel A. Stolper, Xiaofei Pu, Max K. Lloyd, Nikolas I. Christensen, Claire E. Bucholz, Rebecca A. Lange   +5 more
doaj   +1 more source

PALEOGEODYNAMICS OF MAGMATIC AND METAMORPHIC PROCESSES OF FORMATION OF ULTRAMAFIC ROCKS OF CHAGAN-UZUN MASSIF (OPHIOLITES OF GORNY ALTAI)

Геодинамика и тектонофизика, 2021
The Geochemical and mineralogical studies showed, that harzburgites of the Chagan-Uzun massif are restites with a degree of partial melting 15–20 %, which formed at temperatures 1520–1420 °С under the conditions of the mid-oceanic ridge and transformed ...
V. A. Simonov, A. V. Kulikova, A. V. Kotlyarov, T. B. Kolotilina   +3 more
doaj   +1 more source

Upper Crustal Structure of Superfast‐Spread Oceanic Crust Exposed at the Pito Deep Rift: Implications for Seafloor Spreading

Geochemistry, Geophysics, Geosystems, 2023
A tectonic window into the upper 2,000 m of oceanic crust generated at the superfast spreading (∼142 mm/yr) southern East Pacific Rise exposes a continuous layered structure of basaltic lavas and sheeted dikes over gabbroic rocks.
J. A. Karson, L. A. Chutas, N. W. Hayman, R. N. Hey, A. J. Horst, S. D. Hurst, E. M. Klein, D. F. Naar, R. J. Varga   +8 more
doaj   +1 more source

Magnetic anisotropy of a sub-ophiolitic metamorphic sole (Mersin ophiolite, Turkey)

Bulletin Of The Mineral Research and Exploration, 2022
The Mersin ophiolite of southern Turkey is a well-exposed, Late Cretaceous, Neo-Tethyan suprasubduction zone ophiolite. It is underlain by metamorphic sole rocks inferred to have formed at the top of a down-going plate during subduction. These have a well-developed foliation and lineation observable in the field (defined by the preferred orientations ...
ÇAVDAR, Buğra, MORRİS, Antony, ANDERSON, Mark, MENEGON, Luca, PARLAK, Osman   +4 more
openaire   +3 more sources

Correlation of metabasic rocks from metamorphic soles of the Dinaridic and the Western Vardar zone ophiolites (Serbia): Three contrasting pressure-temperature-time paths [PDF]

Geološki Anali Balkanskoga Poluostrva, 2012
The field, petrological-mineralogical, geochemical and geochronological data of the metamorphic sole rocks recorded beneath the Fruška Gora, Povlen (Tejići), Stolovi and Banjska ophiolites in the Western Vardar Zone (WVZ) and beneath the ...
Srećković-Batoćanin Danica, Vasković Nada, Matović Vesna, Gajić Violeta   +3 more
doaj   +1 more source

Stratigraphy, facies and geodynamic settings of Jurassic formations in the Bükk Mountains, North Hungary: its relations with the other areas of the Neotethyan realm. [PDF]

, 2013
Jurassic mélange complexes related to the subduction of the Neotethys Ocean occur in the Bükk Mountains, North Hungary. This paper characterizes the sedimentary sequence of basin and slope facies that occur in the southwestern part of the Bükk ...
Allemann, Antonova, Antonova, Aubrecht, Aurouze, Balla, Balogh, Balogh, Banner, Bassoullet, Bassoullet, Baumgartner, Beccaro, Beccaro, Bourrouilh, Brun, Bucković, Bérczi-Makk, Bérczi-Makk, Chiocchini, Crescenti, Crescenti, Csontos, Csontos, Csontos, Danitch, Dimitrijević, Dimitrijević, Dragičević, Dufaure, Faryad, Ferrari, Filipović, Fodor, Franke, Goričan, Goričan, Gutnic, Gušić, Haas, Haas, Haas, Halamić, Halamić, Heinz, Hips, JÁNOS HAAS, Karamata, Karamata, Kassimova, Kiss, Kovács, Kozur, Kozur, Lucas, Matsuoka, Missoni, Mizutani, Mock, Mohler, Oberhauser, Oberhauser, Ožvoldova, Pamić, Pazdrowa, Pelikán, Pelikán, Pfender, Protić, PÁL PELIKÁN, PÉTER OZSVÁRT, Radoičič, Radoičič, Raffi, Ruggieri, Rüst, Sashida, Schlumberger, Schréter, Septfontaine, Septfontaine, Septfontaine, Septfontaine, Sotak, Spray, Stampfli, Suzuki, SÁNDOR JÓZSA, Terquem, Tišljar, Velić, Velledits, Wakita, Wernli, Wernli, Weynschenk, Widz, Yao, ÁGNES GÖRÖG, Árkai   +99 more
core   +1 more source

Theoretical petrology [PDF]

, 1979
The central issues in petrology have remained remarkably unchanged in the last 50 years. In igneous petrology, the focus is on understanding the nature and cause of diversity in igneous rocks: on identifying primary magma types and constraints on the ...
Stolper, Edward
core   +1 more source