Results 71 to 80 of about 110,511 (334)

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, Baldo, Castroviejo, Castroviejo, Cawood, Chew, Colombo C.G. Tassinari, Dalmayrac, Dalziel, Eurico Pereira, Fuck, Irvine, Jorge Acosta, Jose F. Rodrigues, Le Maitre, Ludwig, Megard, Palme, Pearce, Pedrosa-Soares, Ramos, Ramos, Ramos, Ricardo Castroviejo, Sato, Steiger   +25 more
core   +3 more sources

A Survey on Metamorphic Testing [PDF]

IEEE Transactions on Software Engineering, 2016
European Commission (FEDER)
Sergio Segura, Gordon Fraser, Ana B. Sanchez, Antonio Ruiz-Cortes   +3 more
openaire   +4 more sources

Neoarchean Arc Magmatism and Crust Recycling in the Northern Marginal Zone of the Limpopo Complex, Zimbabwe: New Insights From Zircon U‐Pb‐Hf Isotopes of a Charnockite Suite

Geological Journal, EarlyView.
Charnockites with 2691–2607 Ma magmatic ages from the NMZ show arc‐magmatic geochemical signatures. They correspond to the lower‐crustal equivalent of the Chilimanzi Suite Granite in the Zimbabwe Craton. Lu‐Hf isotopic data of magmatic zircons show negative εHf(t) values (−11.18 to −2.20) with TDMC ages of 3699–3158 Ma, suggesting their protolith ...
Toshiaki Tsunogae, Md. Sazzadur Rahman, Gao Pin, M. Santosh, Wataru Fujisaki, Sam Uthup, Prince Mandingaisa   +6 more
wiley   +1 more source

Permian-Triassic basalts from basement of the West Siberian basin from superdeep hole Yen-Yakhinskayа SG-7

Литосфера, 2016
For the first time detailed mineralogical research of the Permo-Triassic basalt core samples of Yen-Yakhinskaya superdeep hole SG-7 from the depths of 7673 m, 8009 m and 8250 m was carried. The composition of minerals investigated.
S. V. Berzin, K. S. Ivanov, M. V. Zaitseva   +2 more
doaj  

SPHERICAL MICROPARTICLES FROM GOLD–BEARING QUARTZ VEINS OF THE IROKINDA DEPOSIT, WESTERN TRANSBAIKALIA

Геодинамика и тектонофизика, 2016
We have studied the material composition of ore microparticles extracted from gold concentrates of operating quartz vein No. 30 located in the Irokinda deposit, Western Transbaikalia.
A. V. Tatarinov, L. I. Yalovik, V. A. Vanin   +2 more
doaj   +1 more source

At the far end of everything: A likely Ahrensburgian presence in the far north of the Isle of Skye, Scotland

Journal of Quaternary Science, EarlyView.
ABSTRACT A Late Upper Paleolithic (LUP) site containing Ahrensburgian‐type stone tools has been discovered at South Cuidrach, Isle of Skye, Scotland. Together with a group of intertidal stone circular alignments also recently discovered on the island, this new evidence for the occupation of northern Scotland also represents the most northerly LUP site ...
Karen Hardy, Natasha L.M. Barlow, Edward Taylor, Sarah L. Bradley, John McCarthy, Graham Rush   +5 more
wiley   +1 more source

Petrologic significance of Fe-rich staurolite in pelitic schists of the Silgará Formation, Santander Massif

Earth Sciences Research Journal, 2016
Medium grade metapelites of the Silgará Formation at the Santander Massif (Colombian Andes) have been affected by a medium-pressure/high-temperature Barrovian type of metamorphism, developing a sequence of metamorphic zones (biotite, garnet, staurolite ...
Carlos Alberto Ríos, Óscar Mauricio Castellanos   +1 more
doaj   +1 more source

Metamorphism and Metamorphic Rocks

, 2013
In the previous chapters, we learned about igneous and sedimentary rocks. This chapter presents some general concepts concerned with the process of metamorphism and the formation of metamorphic rocks. How pressure, temperature, and fluids control metamorphic processes and resulting metamorphic changes are discussed.
openaire   +2 more sources

Stratigraphy and geomorphology of Des‐Cubierta Cave (Pinilla del Valle, Madrid, Spain): Geological insights into a Neanderthal symbolic accumulation of large crania

Journal of Quaternary Science, EarlyView.
ABSTRACT Des‐Cubierta Cave, part of the Calvero de la Higuera complex, is situated in the intramountainous upper valley of the Lozoya River within the Guadarrama Range. The cave's geological, palaeontological, and archaeological record reveals a complex history of sedimentary and anthropogenic processes spanning hundreds of thousands of years ...
David Manuel Martín‐Perea, Enrique Baquedano, Juan Luis Arsuaga, César Laplana, Ana Isabel Ortega, Lucía Villaescusa, Belén Márquez, Rosa Huguet, Abel Moclán, Sandra Gómez Soler, Xabier Arroyo, Laura Rodríguez, Rebeca García‐González, M. Cruz Ortega, Jesús Masa‐Andrés, Diego J. Álvarez‐Lao, Nuria García, M. Ángeles Galindo‐Pellicena, Tom Higham, Alfredo Pérez‐González   +19 more
wiley   +1 more source

The effect of eclogitization of crustal rocks on the seismic properties on variable scales: Implications for geophysical imaging of eclogitization at depth [PDF]

, 2020
Plate tectonics shapes the face of the earth and subduction and collision zones are among the most important features on Earth. Here, crustal material is recycled into the mantle or integrated into growing orogens.
Zertani, Sascha
core   +1 more source