Results 41 to 50 of about 90,092 (222)

1. Experimental Investigation of Hydrous Melting of the Earth’s Upper Mantle, and 2. Olivine Abundances and Compositions in Hawaiian Lavas [PDF]

, 2010
(1) The presence of small amounts of water dissolved within nominally-anhydrous minerals in the earth has significant effects on the chemistry of melting in the Earth’s mantle.
Balta, Joseph Brian
core   +1 more source

Stratigraphic position and diversity occurrences of basic alkaline igneous rocks in the Permian sedimentary strata, Central Alborz Zone [PDF]

Journal of Stratigraphy and Sedimentology Researches, 2018
A completely lithologic sequence of Permian strata including Doroud (mainly of sandstone and shale), Ruteh (mainly of limestone with interbed marl) and Nesen (mainly of limestone and shale) formations is exist in Central Alborz zone from Siyah-Bishe and ...
Hadigheh Khatoon Kazemi, habiboolah ghasemi, Azizollah taheri   +2 more
doaj   +1 more source

Achieving sustainable and durable concrete using high‐volume SiO2: Engineering properties, environmental and economic benefits

Structural Concrete, EarlyView.
Abstract This study explores the potential of high‐volume amorphous silica (SiO2) replacement for ordinary Portland cement (OPC) in concrete to reduce carbon emissions. Amorphous SiO2, such as silica fume (SF) and CO2 mineralization‐produced Si‐rich gel, offers superior properties to concrete but is under‐researched for its use in concrete with high ...
Xinlin Ji, Lijie Chen, R. K. L. Su
wiley   +1 more source

Multiscale modeling of upper mantle plasticity: From single-crystal rheology to multiphase aggregate deformation [PDF]

, 2014
We report a first application of an improved second-order (SO) viscoplastic self-consistent model for multiphase aggregates, applied to an olivine + diopside aggregate as analogue for a dry upper mantle peridotite deformed at 10 15 s 1 shear strain rate ...
CORDIER, Patrick, CASTELNAU, Olivier, RATERON, Paul, MERKEL, Sébastien, RATERRON, Paul, BOLLINGER, Caroline, DETREZ, Fabrice   +6 more
core   +1 more source

Evidence for suboceanic small-scale convection from a “garnet”-bearing lherzolite xenolith from Aitutaki Island, Cook Islands

Progress in Earth and Planetary Science
Garnet peridotite xenoliths have been rarely reported from suboceanic mantle. Petrographic and geochemical characteristics of garnet-bearing oceanic peridotite xenoliths provide precious information on dynamics of the suboceanic lithosphere and ...
Norikatsu Akizawa, Kazuhito Ozawa, Tetsu Kogiso, Akira Ishikawa, Akira Miyake, Yohei Igami, Simon R. Wallis, Takayoshi Nagaya, Chihiro Ohshima, Ryo Fujita, Tatsuhiko Kawamoto, Akihiro Tamura, Tomoaki Morishita, Shoji Arai, Atsushi Yasumoto   +14 more
doaj   +1 more source

Esquel Meteorite, a Forgotten Argentine Peridot: A Multi Analytical Study

Spectroscopy Journal
The Esquel pallasite provides a valuable record of metal–silicate interaction in differentiated planetesimals, yet many aspects of its formation and thermal evolution remain uncertain.
Faramarz S. Gard, Rogelio D. Acevedo, Pablo Gaztañaga, Paula N. Alderete, Lara M. Solis, Gabriel Pierangeli, Gonzalo Zbihlei, Nahuel Vega, Emilia B. Halac   +8 more
doaj   +1 more source

RELICTS OF THE PRIMARY MAGMATIC ACCESSORY SPINELS IN THE ARCHEAN KOMATIITES OF THE EASTERN FENNOSCANDIA

Transactions of the Karelian Research Centre of the Russian Academy of Sciences, 2015
The article presents the results of a complex study of the relicts of the primary magmatic spinels from the Archean (3.0-2.7 Ga) komatiitic series of the greenstone structures of the eastern Fennoscandian Shield. The accessory minerals of the massive and
Зоя Павловна Рыбникова, Zoya Rybnikova   +1 more
doaj   +1 more source

Dynamic phase boundaries of olivine‐wadsleyite in subduction zones in the western Pacific [PDF]

Geophysical Research Letters, 2002
A modified coupling scheme is proposed to calculate the thermal structures and the kinetics of olivine to wadsleyite phase transformation in subduction zones, which assures a high computational precision. The phase and thermal structures of some subduction zones in the western Pacific region are calculated.
Zhi‐Cheng Jing, Jie‐Yuan Ning, Shu‐Guang Wang, Shao‐Xian Zang   +3 more
openaire   +1 more source

Description and terrestrial ages of the Calama Area Meteorite Collection (Atacama Desert, Chile)

Meteoritics &Planetary Science, EarlyView.
Abstract We present a comprehensive study of a meteorite collection from the Atacama Desert (Chile), the driest and most climatically stable desert in the world. This collection includes meteorites from three adjacent Dense Collection Areas (DCAs) in the northern part of the Atacama Desert: Calama, Sierra Gorda, and Chug Chug, referred to as the ...
Carine Sadaka, Jérôme Gattacceca, Florian Dumas, Régis Braucher, ASTER Team, Matthieu Gounelle, Dilyara Kuzina, Cyril Lorenz, Alexandre Corgne, Pierre Sempéré   +9 more
wiley   +1 more source

Mineral Chemistry Studies on Pyroxenes in Fe Skarns in the West of Elazığ (Turkey); Their Role in the Skarn Mineralization Process

Applied Sciences
This study presents the first detailed investigation of pyroxene zoning within polymetallic skarn zones of the Elazığ region. Skarns develop along contacts between plutonic rocks (diorite and granite) and carbonate rocks, forming two main zones ...
Necla Koprubasi, Ayşe Didem Kiliç, Ahmet Sasmaz   +2 more
doaj   +1 more source