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Widespread two-layered melt structure in the asthenosphere
Partial melts in the Earth’s convecting mantle influence its physical and chemical state, particularly the plasticity of the asthenosphere and the...
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Evolution of spinel-bearing ultrahigh-temperature granulite in the **ing complex, North China Craton: constrained by phase equilibria and Monte Carlo methods
The peak temperature and timescale of ultrahigh-temperature (UHT) metamorphism are significant for understanding its thermal budget and geodynamic...
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Structure of the Upper Mantle Beneath Northern Eurasia Derived from Russian Deep-Seismic PNE Profiles
From 1968 until 1990, Russian scientists carried out an intensive program of deep seismic sounding across the territory of the former Soviet Union,...
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Indicator Role of Spinel-Olivine Paragenesis in Determining Conditions of Dunites Origin in the Central Cart of the Konder Massif
Calculations of conditions for crystallization of spinel-olivine paragenesis from rocks of the core of the Konder alkaline ultrabasic massif were...
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Cumulus and post-cumulus evolution of chrome-spinel compositions in the “Ore Horizon 330” rocks from the Sopcha massif of the Paleoproterozoic layered Monchegorsk Pluton, Kola Peninsula, Russia
The Sopcha massif, which is part of the Paleoproterozoic layered Monchegorsk Pluton (Monchepluton), contains an ore horizon with an average thickness...
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Fundamentals of Geophysics, the Earth in the Universe, Its Material Composition, and Its Internal Structure
This book discusses how—by analysis of the physical fields and processes within and on the Earth—we learn how old the Earth is, what are its internal...
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Structure and composition of the lithosphere beneath Mount Carmel, North Israel
A suite of mantle-derived xenoliths and xenocrysts in Cretaceous volcanic rocks from Mount Carmel, North Israel has been investigated to establish...
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Anisotropic electrical conductivity changes in FeTiO3 structure transition under high pressure
Electrical resistivity measurements on oriented FeTiO 3 ilmenite using single crystals at high pressures proves that FeTiO 3 ilmenite shows anisotropic...
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Multi-stage magmatic history of olivine–leucite lamproite dykes from Banganapalle, Dharwar craton, India: evidence from compositional zoning of spinel
Mesoproterozoic lamproite dykes occurring in the Banganapalle Lamproite Field of southern India show extensive hydrothermal alteration, but preserve...
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Earthquakes and Earth’s Structure
Most of what we know about the structure of the Earth has been learned from the observation and interpretation of the propagation of seismic waves,...
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Effect of Fly Ash (FA) Characteristic on Geopolymer Product Quality
Fly Ash and Bottom Ash (FABA), a waste product in the form of ash from the burning coal at coal-fired power plants, is considered to have many...
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Petrological and Geochemical Studies on the Basalts of Mandla Lobe, Eastern Deccan Volcanic Province; Implications on the Shallow Melting of a Spinel Peridotite and Crustal Contamination
The petrological studies and geochemical analysis carried out on the basalts of Mandla Lobe (MB), Madhya Pradesh of eastern Deccan Volcanic Province...
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Effect of Precambrian basement structure on heat flow distribution in Eastern Arabia
A new model of the thermal structure of the easternmost portion of the Arabian continental crust is presented. Detailed heat flow models based on...
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Petrology of lherzolite xenoliths of Hosséré Sédé volcano (Adamawa plateau, Ngaoundéré area, Cameroon)
Numerous mantle xenoliths 6–12 cm in size and sub-angular to rounded in shape occur within Mio-Pliocene basanite lavas of the monogenic volcano of...
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Golpayegan Metamorphic Complex (Sanandaj–Sirjan Zone, Iran) as Evidence for Cadomian Back-Arc Magmatism: Structure, Geochemistry and Isotopic Data
AbstractThe Golpayegan metamorphic complex is located in the Sanandaj-Sirjan Zone, Iran. This complex consists of various metamorphic rocks including...
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Evidence for suboceanic small-scale convection from a “garnet”-bearing lherzolite xenolith from Aitutaki Island, Cook Islands
Garnet peridotite xenoliths have been rarely reported from suboceanic mantle. Petrographic and geochemical characteristics of garnet-bearing oceanic...
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Lateral variations in the Unit 7–8 boundary zone of the Rum Eastern Layered Intrusion, NW Scotland: implications for the origin and timing of Cr-spinel seam formation
The Rum Layered Suite, NW Scotland, hosts Cr-spinel seams at the bases of peridotite–troctolite macro-rhythmic units in the eastern portion of the...
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Petrography and chemistry of chromite phases from the Mesoarchean chromitite bodies of the Boula-Nuasahi ultramafic complex, India: Indicators of magmatic evolution and hydrothermal alteration
Occurrence of “ferrian chromites” have earlier been reported from the Mesoarchean chromite deposits in the Boula-Nuasahi ultramafic complex (BNUC) of...
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Mineral chemistry of high-Al chromian spinel from ultramafic rocks of the Babina–Prithvipur transect, Bundelkhand Craton, central India: Implication for petrogenesis and tectonic setting
Bundelkhand Craton is an important Archaean cratonic nuclei of the Central Indian Shield and comprises two greenstone complexes, i.e., the...
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The Structure of Mountains
Between Chur and Lake Walen in Switzerland, a striking line divides the mountains, in two storeys of obviously completely different rocks. The Glarus...