Interpreting Europium Anomalies in Zircon: The Importance of Source Redox
Geochemistry, Geophysics, GeosystemsThe sources of granitoids are variably oxidized due to the diversity of environments in which they form. This environmental and consequent chemical variability leads to differences in mineral assemblages, proportions, and compositions of ferric and ...
Chris Yakymchuk, Christopher L. Kirkland
doaj +2 more sources
Geochemistry of metabasites and gabbroic rocks from the Tepla-Domazlice zone. [PDF]
, 1988 Various amphibolites, metagabbros and eclogitic relics of the Mariimske Lazne complex, and amphibolites from the Cerna Hora Massif exhibit an uniform geochemical character which compares well with modern mid-ocean ridge basalts.
Okrusch, Martin +4 more
core +4 more sources
Petrology of metabasites in the south of Arousan, northeastern Isfahan province
Journal of Economic Geology, 2012 Metagabbro, metadiabase and metabasalt of the Chah Palang and Me'raji mountains associated with Lower Paleozoic metamorphites are situated in the south of Arousan.
Fereshteh Bayat, Ghodrat Torabi
doaj +1 more source
Large Igneous Provinces (LIPs) and Anoxia Events in “The Boring Billion”
Geophysical Monograph Series, Page 449-486., 2021 Exploring the links between Large Igneous Provinces and dramatic environmental impact
An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Shuan‐Hong Zhang +4 more
wiley +1 more source
Cadomian metabasites of the Eastern Pyrenees revisited
Geologica Acta, 2022 This study presents a new geochemical, petrological, and geochronological U–Pb dataset from Ediacaran metabasites of the Canigó and Cap de Creus massifs, Eastern Pyrenees. The rocks are composed of calcic amphibole + plagioclase + chlorite + epidote ± quartz plus titanite + apatite + ilmenite ± biotite ± rutile as accessory phases and show relict ...
Pujol-Solà, Núria +7 more
openaire +12 more sources
A neoproterozoic age for the chromitite and gabbro of the Tapo Ultramafic Massif, Eastern Cordillera, Central Peru, and its tectonic implications [PDF]
, 2011 The ultramafic-mafic rocks of the Tapo Complex are exposed in the Eastern Cordillera of the Central Peruvian Andes. This complex is composed of serpentinised peridotites and metabasites with some podiform chromitite lenses and chromite disseminations and
Amaral +25 more
core +3 more sources
Petrological analyses and U-Pb geochronology with REE geochemistry of zircons in granulites from Tenmondai Rock in the Lützow-Holm Complex, East Antarctica [PDF]
, 1929 The Ninth Symposium on Polar Science/Ordinary sessions: [OG] Polar Geosciences, Wed. 5 Dec.
Henry G. Gilbert Nursery and Seed Trade Catalog Collection. +2 more
core +3 more sources
Geo-structural map of the Laguna Blanca basin (Southern Central Andes, Catamarca, Argentina) [PDF]
, 2015 The Laguna Blanca basin is a rhomb-shaped basin located at the SE margin of the Puna plateau in the southern Central Andes (Catamarca, Argentina). An interactive analysis using remote sensing and field mapping enabled us to produce a geo-structural map ...
Massironi, Matteo +2 more
core +2 more sources
Compressional and extensional tectonics in low-medium pressure granulites from the Larsemann Hills, east Antarctica [PDF]
, 1995 Meta-sediments in the Larsemann Hills that preserve a coherent stratigraphy, form a cover sequence deposited upon basement of mafic–felsic granulite. Their outcrop pattern defines a 10 kilometre wide east–west trending synclinal trough structure in which
Bhattacharya +17 more
core +1 more source
Геофизический журнал, 2012 The German superdeep borehole KTB drilled in the massif composed of paragneiss, metabasite, granite and metasedimentary rocks (Germany, Windischeshenbach) reached the maximum depth of 9101 m.
M. V. Kovalevskiy +3 more
doaj +1 more source