Results 81 to 90 of about 41,907 (309)

From the Bottom Up: Calculating Mantle‐Derived Magma Flux Using Subduction Parameters and Petrologic Constraints at Oceanic Arcs

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 1, January 2026.
Abstract Mantle‐derived magma flux has a first‐order control on long‐term volcanic productivity, volatile cycling, and crustal growth in convergent margins. However, the factors controlling it remain unclear. We used a simplified, 3D conceptualization of an intraoceanic subduction zone and petrologic constraints on mantle melting to calculate mantle ...
A. E. Goltz, C. B. Till, A. J. R. Kent
wiley   +1 more source

Mapping ultramafic complexes using airborne imaging spectroscopy and spaceborne data in Arctic regions with abundant lichen cover, a case study from the Niaqornarssuit complex in South West Greenland

European Journal of Remote Sensing, 2020
This study investigates the usage of HyMAP airborne hyperspectral and Sentinel-2, ASTER and Landsat-8 OLI spaceborne multispectral data for detailed mapping of mineral resources in the Arctic. The EnMAP Geological Mapper (EnGeoMAP) and Iterative Spectral
Sara Salehi, Christian Mielke, Christian Rogass   +2 more
doaj   +1 more source

Electrical Conductivity During Controlled Deformation at Upper‐Mantle Conditions: First Experimental Achievements in a Griggs‐Type Apparatus

Geochemistry, Geophysics, Geosystems
Electrical conductivity measurements on well‐characterized materials in the laboratory allow accurate interpretations of high‐conductivity anomalies within the lithosphere and asthenosphere, both affected by substantial deformation over geological times.
Thomas P. Ferrand, Jacques Précigout, David Sifré, Johannes C. Vrijmoed, Timm John, Frédéric Savoie, Rémi Champallier, Fabrice Gaillard   +7 more
doaj   +1 more source

Lithological structure of the Galápagos Plume

Geochemistry, Geophysics, Geosystems, 2013
We have measured Ni, Ca, and Mn in olivine phenocrysts from volcanoes in the Galápagos Archipelago to infer the mantle source lithologies. Results show that peridotite is the dominant source lithology for Fernandina, Floreana, Genovesa, Wolf Island, and ...
Christopher Vidito, Claude Herzberg, Esteban Gazel, Dennis Geist, Karen Harpp   +4 more
doaj   +1 more source

PENENTUAN NILAI SATURASI MAGNETIK BATUAN PERIDOTIT ASAL DESA AWANG BANGKAL BARAT KABUPATEN BANJAR KALIMANTAN SELATAN

Jurnal Fisika Flux, 2013
Abstrak : Peridotite rocks are ultra-alkaline rocks that igneous rocks which high in mineral content of FeO, and also a magnetic mineral. Each rock type has specific properties and characteristics are manifested in the magnetic field in magnetic ...
Sudarningsih Sudarningsih, Simon Sadok Siregar, Wenny Habib Ghofallena   +2 more
doaj   +3 more sources

Variable Upper Mantle Geochemical Processes Constrained From Independent Component Analysis of the Fizh Massif, Northern Oman Ophiolite

Geochemistry, Geophysics, Geosystems
We statistically analyzed the whole‐rock compositions of peridotites in the Oman ophiolite using a multivariate statistical technique called independent component analysis (ICA) to better understand the processes within the ophiolitic mantle section that
Yuto Miki, Eiichi Takazawa, Kenta Ueki, Tatsu Kuwatani   +3 more
doaj   +1 more source

Assessing the Carbon Sequestration Potential of Ultramafic Rocks in the Kolaka Ophiolite Complex, Southheastern Sulawesi: A Petrographic, Geochemical, and Mineralogical Study

JGEET: Journal of Geoscience, Engineering, Environment and Technology
Climate change has prompted significant global interest in carbon sequestration technologies, particularly using geological formations. This study investigates the potential of ultramafic rocks from the Kolaka Ophiolite Complex in Southeast Sulawesi for ...
Syahrul, La Ode Dzakir, Riska, Rio Irhan Mais Cendra jaya, Masri   +4 more
doaj   +1 more source

Prebiotic Organic Microstructures [PDF]

, 2011
Micro- and sub-micrometer spheres, tubules and fiber-filament soft structures have been synthesized in our experiments conducted with 3 MeV proton irradiations of a mixture of simple inorganic constituents, CO, N2 and H2O.
A Yoshihara, AM Hessler, CJ Hale, DI Foustoukos, F Klein, H Kurihara, J Takahashi, K Kobayashi, K Kobayashi, K Kobayashi, K Kobayashi, K Kvenvolden, Kensei Kobayashi, M Yoshizaki, Marie-Paule Bassez, MP Bassez, MP Bassez, O Botta, S Miyakawa, SL Seewald, T McCollom, T McCollom, Y Takano, Y Takano, Y Takano, Y Takano, Yoshinori Takano   +26 more
core   +2 more sources

Theoretical petrology [PDF]

, 1979
The central issues in petrology have remained remarkably unchanged in the last 50 years. In igneous petrology, the focus is on understanding the nature and cause of diversity in igneous rocks: on identifying primary magma types and constraints on the ...
Stolper, Edward
core   +1 more source

Petrology and Geochemistry of Igneous Rocks in Gunung Badak Complex, Ciletuh Palabuhanratu Geopark, Sukabumi, West Java

Aceh International Journal of Science and Technology
Gunung Badak Complex is located in Ciletuh Palabuhanratu UNESCO Global Geopark, which preserves significant records of tectonic evolution in Southern West Java. This research aims to characterize igneous rocks and interpret tectonic implications.
Millati Amalia Sentosa*, Mega Fatimah Rosana, Cipta Endyana   +2 more
doaj   +1 more source