Results 71 to 80 of about 28,419 (225)

Origin of calcite by magma mixing in mingled rocks of the Ghansura Rhyolite Dome, Bathani volcano-sedimentary sequence, eastern India

Mineralogia
The Ghansura Rhyolite Dome (GRD) is an integral part of the Bathani volcano-sedimentary sequence (BVSs), which in turn is a vital component of the Chotanagpur Granite Gneiss Complex (CGGC), eastern India.
Gogoi Bibhuti, Basumatary Pallabi
doaj   +1 more source

Lithospheric structural dynamics and geothermal modeling of the Western Arabian Shield

Scientific Reports, 2023
Understanding the dynamics of suturing and cratonisation and their implications are vital in estimating the link between the lithospheric mantle architecture and geothermal resources.
Oualid Melouah, Ebong D. Ebong, Kamal Abdelrahman, Ahmed M. Eldosouky   +3 more
doaj   +1 more source

Escape and fractionation of volatiles and noble gases from Mars-sized planetary embryos and growing protoplanets

, 2017
Planetary embryos form protoplanets via mutual collisions, which can lead to the development of magma oceans. During their solidification, large amounts of the mantles' volatile contents may be outgassed.
Erkaev, N. V., Johnstone, C. P., Kislyakova, K. G., Lammer, H., Leitzinger, M., Lichtenegger, H. I. M., Nikolaou, A., Odert, P., Tosi, N.   +8 more
core   +1 more source

Mineral chemistry, Thermo-barometry and Crystal Size Distribution of volcanic rocks from Shirinak: Implication for genesis of volcanic rocks in the southeast of Urumieh-Dokhtar (Kerman province) [PDF]

پترولوژی, 2017
The Shirinak volcanic rocks, known as Dahaj-Sarduieh belt in Kerman province, are exposed southeast of Urumieh-Dokhtar volcanic belt. Petrographically, the volcanic rocks are basalts and andesite, which consist mainly of plagioclase, clinopyroxene ...
Fatemeh Sepidbar, Mohsen Naderi, davood raisi   +2 more
doaj   +1 more source

Mixing of rhyolite, trachyte and basalt magma erupted from a vertically and laterally zoned reservoir, composite flow P1, Gran Canaria [PDF]

, 1992
The 14.1 Ma composite welded ignimbrite P1 (45 km3 DRE) on Gran Canaria is compositionally zoned from a felsic lower part to a basaltic top. It is composed of four component magmas mixed in vertically varying proportions: (1) Na-rhyolite (10 km3) zoned ...
A Freundt, AR McBirney, Armin Freundt, AT Anderson, BC Schuraytz, BD Marsh, BD Marsh, Bunsen, CJ Fridrich, CM Oldenburg, CR Bacon, CS Ross, DR Boden, G Wörner, GA Macdonald, H Sigurdsson, Hans-Ulrich Schmincke, HE Huppert, HR Shaw, HS Carslaw, HU Schmincke, HU Schmincke, HU Schmincke, HU Schmincke, HU Schmincke, IH Campbell, JA Whitney, JA Wolff, JC Eichelberger, JS Turner, KA Jørgensen, L Wilson, NL Bowen, PW Lipman, RA Thompson, RA Wiebe, RL Smith, RW Maitre Le, S Blake, S Blake, T Koyaguchi, TA Vogel, TL Wright, TL Wright, TP Frost, W Hildreth, W Hildreth, Y Bottinga   +47 more
core   +1 more source

The origin of Cihara granodiorite from South Banten

Indonesian Journal on Geoscience, 2014
http://dx.doi.org/10.17014/ijog.vol3no2.20085Petrographical and geochemical characteristics of the Late Oligocene Cihara Granodiorite from South Banten are presented.
Udi Hartono, Ildrem Syafri, Reza Ardiansyah   +2 more
doaj   +1 more source

The 1723 AD violent Strombolian and phreatomagatic eruption at Irazu volcano (Costa Rica) [PDF]

, 2013
The largest of the recorded historic eruptions at Irazú volcano began on February 16, 1723 and lasted until at least December 11. We here critically examine deposits of this eruption exposed on the summit of Irazú. Our reconstruction of the eruption is
Alvarado, G. E., Schmincke, Hans-Ulrich
core  

Tectonic significance of Late Precambrian calc-alkaline and alkaline magmatism in Saint Katherina Area, Southern Sinai, Egypt

Geologica Acta, 2007
Two magmatic rock suites are distinguished in the Late Precambrian basement of the Southern Sinai (NW Arabian-Nubian Shield, Egypt), namely (a) a calc-alkaline suite, and (b) an alkaline suite.
M.K. Azer
doaj   +1 more source

Mechanisms and Geochemical Models of Core Formation

, 2015
The formation of the Earth's core is a consequence of planetary accretion and processes in the Earth's interior. The mechanical process of planetary differentiation is likely to occur in large, if not global, magma oceans created by the collisions of ...
Abe, Agnor, Alexander, Asahara, Bagdassarov, Ballhaus, Cameron, Canup, Cerantola, Chambers, Corgne, Dahl, Deguen, Fischer, Frost, Halliday, Hartmann, Hevey, Holzapfel, Holzheid, Holzheid, Hustoft, Jacobson, Kendall, König, Landeau, Li, Li, Liebske, Mann, Mann, McDonough, Minarik, Morbidelli, Nimmo, Nimmo, O'Brien, O'Neill, Olson, Palme, Reese, Ricard, Righter, Rubie, Rubie, Rubie, Rubie, Rubie, Rubie, Rudge, Samuel, Shannon, Shannon, Shi, Siebert, Solomatov, Stevenson, Takafuji, Terasaki, Terasaki, Terasaki, Terasaki, Tonks, Tuff, Urey, von Bargen, Wade, Walsh, Walte, Walte, Wood, Wood, Wänke, Yoshino, Ćuk   +74 more
core   +1 more source

Theoretical Spectra of Terrestrial Exoplanet Surfaces [PDF]

, 2012
We investigate spectra of airless rocky exoplanets with a theoretical framework that self-consistently treats reflection and thermal emission. We find that a silicate surface on an exoplanet is spectroscopically detectable via prominent Si-O features in ...
Batalha, Best, Bethany L. Ehlmann, Borucki, Borucki, Cheek, Clark, Clark, Cochran, Cowan, de Pater, Drilling, Farmer, Gautier, Koch, Miller-Ricci, Muirhead, Pieters, Pieters, RELAB Spectral Database, Renyu Hu, Rogers, Salisbury, Sara Seager, Seager, Seager, Sobolev, Sprague, Winn   +28 more
core   +2 more sources