Results 41 to 50 of about 113 (110)

Contact Metamorphism of Pelitic Rocks Constrains the Depth of Emplacement of the Re di Castello Intrusion (Adamello Batholith, Italy)

Journal of Metamorphic Geology, Volume 43, Issue 1, Page 47-69, January 2025.
ABSTRACT Re di Castello is the southernmost unit of the composite Adamello batholith (central Alps, Italy). It was emplaced between 43 and 40 Ma, yet its depth of emplacement is not well constrained. We have studied the contact metamorphism of pelitic country rocks in two localities: the upper Caffaro Valley and the Borzago Valley in the southern and ...
Bernardo Cesare, Omar Bartoli, Peter Brack, Giorgio Moranduzzo, Arianna Randazzo, Salvatore Iaccarino, Lisa Santello   +6 more
wiley   +1 more source

Geochemistry of forty‐one eclogitic and pyroxenitic mantle xenoliths from the Central Slave Craton, Canada (Ekati Diamond Mine)

Geoscience Data Journal, Volume 11, Issue 4, Page 825-832, October 2024.
Xenoliths from the Ekati kimberlite (Slave Craton, Canada) (left) show a large range of neodymium (εNd) and strontium isotopic ratios. Abstract This article describes a novel dataset on non‐diamondiferous eclogite and garnet pyroxenite xenoliths from four kimberlite pipes of the Ekati Diamond Mine (Central Slave Craton, Canada).
D. E. Jacob, A. Fung
wiley   +1 more source

Application of Clinopyroxene Chemistry to Interpret the Physical Conditions of Ascending Magma, a Case Study of Eocene Volcanic Rocks in the Ghohrud Area (North of Isfahan)

Journal of Economic Geology, 2016
Introduction Volcanic rocks with a porphyritic texture have experienced two crystallization stages. The first is slow, resulting in phenocrysts, and the second, which took place at, or near the surface, or during intrusion into a cooler body of rock ...
Mohammad Sayari, Mortaza Sharifi
doaj  

No evidence for Archean eclogite-facies metamorphism. [PDF]

Proc Natl Acad Sci U S A, 2022
Zou Y, Chu X, Wu J, Zhao L.
europepmc   +1 more source

Reply to Zou et al.: Neoarchean eclogite-facies oceanic crust in the North China Craton. [PDF]

Proc Natl Acad Sci U S A, 2022
Ning W, Kusky T, Wang L, Huang B.
europepmc   +1 more source

Archean eclogite-facies oceanic crust indicates modern-style plate tectonics. [PDF]

Proc Natl Acad Sci U S A, 2022
Ning W, Kusky T, Wang L, Huang B.
europepmc   +1 more source

Natural Fe-bearing aluminous bridgmanite in the Katol L6 chondrite. [PDF]

Proc Natl Acad Sci U S A, 2021
Ghosh S, Tiwari K, Miyahara M, Rohrbach A, Vollmer C, Stagno V, Ohtani E, Ray D.   +7 more
europepmc   +1 more source

Coupled deep-mantle carbon-water cycle: Evidence from lower-mantle diamonds. [PDF]

Innovation (Camb), 2021
Wang W, Tschauner O, Huang S, Wu Z, Meng Y, Bechtel H, Mao HK.   +6 more
europepmc   +1 more source

Mineral equilibria, geothermometers and geobarometers in some Icelandic hyaloclastites

Bulletin of the Geological Society of Finland, 1978
Distribution coefficients between crystal and magma can be used to establish various properties of magmas. A number of natural hyaloclastites have been used to evaluate some of the established geothermometers and geobarometers. Comparison with experimental data on the same rocks shows that the olivine geothermometer gives the most reasonable results ...
openaire   +2 more sources

Cubic Fe-bearing majorite synthesized at 18-25 GPa and 1000 °C: implications for element transport, subducted slab rheology and diamond formation. [PDF]

Sci Rep, 2023
Stagno V, Bindi L, Bonechi B, Greaux S, Aulbach S, Irifune T, Lupi S, Marras G, McCammon CA, Nazzari M, Piccirilli F, Poe B, Romano C, Scarlato P.   +13 more
europepmc   +1 more source