Results 111 to 120 of about 17,505 (279)

Disentangling Partial Melting and Crustal Recycling Signatures in Ocean Island Basalts With Multivariate Statistics

Geochemistry, Geophysics, Geosystems, Volume 26, Issue 9, September 2025.
Abstract Ocean island basalts (OIB) provide valuable constraints on mass exchange between the mantle and crust. When appropriate compositional data transformations are applied, multivariate analyses of OIB compositions can be used to infer mantle source heterogeneity and elucidate its driving processes.
Zachary T. Eriksen, Andreas Stracke
wiley   +1 more source

Water-deficient Calc-alkaline Plutonic Rocks of Northeastern Superior Province, Canada: Significance of Charnockitic Magmatism [PDF]

, 2002
J A Percival
openalex   +1 more source

The Transition to Tectonic Control of Magmatism in the East African Rift System—The 20 Ma Samburu Event

Tectonics, Volume 44, Issue 9, September 2025.
Abstract The Samburu Series magmas of the East African Rift System are a key component of the Early Miocene magmatic resurgence, marking the initiation of plate‐scale volcanic events associated with extension, distinct from the prior continental flood basalt episodes.
Tyrone O. Rooney, R. Alex Steiner, John Kappelman, Eric Brown, Nicholas Mariita   +4 more
wiley   +1 more source

The development of magmatism along the Cameroon Volcanic Line: Evidence from teleseismic receiver functions

, 2012
[1] The Cameroon Volcanic Line (CVL) in West Africa is a chain of Cenozoic volcanism with no clear age progression. The reasons for its existence are unclear, and the nature of its magmatic plumbing system is poorly understood.
Bastow, I.D., Gallacher, R.J.
core   +1 more source

New Thermodynamic Models for Anhydrous Alkaline-Silicate Magmatic Systems

Journal of Petrology
Abstract A new thermodynamic model for silicate melt in the Na2O–CaO–K2O–FeO–MgO–Al2O3–SiO2–TiO2–Fe2O3–Cr2O3 model system is presented, building on the tholeiitic through to granitic melt model of Holland et al. (2018) [Journal of Petrology, 59, 881–900] but extending for the first time into anhydrous alkaline systems. The new melt model
Weller, OM, Holland, TJB, Soderman, CR, Green, ECR, Powell, R, Beard, CD, Riel, N   +6 more
openaire   +2 more sources

Hydration in the Crust and Upper Mantle Near the Extinct Spreading Ridge in the Eastern Sub‐Basin, South China Sea

Geophysical Research Letters, Volume 52, Issue 16, 28 August 2025.
Abstract During the final stages of seafloor spreading in the East Sub‐basin of the South China Sea, spreading transitioned from slow to ultraslow before cessation. However, post‐spreading volcanism has obscured the original fabric along or near the extinct spreading ridge (ESR).
Hui Jiang, Haibo Huang, Enyuan He, Jian Guo, Xuelin Qiu   +4 more
wiley   +1 more source

Eocene calc-alkaline volcanic rocks related to Cenozoic episodic magmatism during Neo-Tethyan subduction, Tarom–Hashtjin Belt, NW Iran [PDF]

, 2023
Ashraf Torkian, Tanya Furman, Ebrahim Tale Fazel, Nayer Ajalli   +3 more
openalex   +1 more source

Receiver Function Imaging of the Mantle Transition Zone Beneath the East Sayan Mountains and Adjacent Area in Central Asia: Implications for Lithospheric Drip and Intraplate Cenozoic Volcanism

Geophysical Research Letters, Volume 52, Issue 15, 16 August 2025.
Abstract To provide constraints on the formation mechanisms of intracontinental volcanisms and intriguing lithospheric thickness variations in the East Sayan Mountains and surrounding areas, we stack P‐to‐s receiver functions to image the 410‐km and 660‐km discontinuities.
Yangyang Liao, Kelly H. Liu, Stephen S. Gao   +2 more
wiley   +1 more source

The Plutón Diorítico Moat: Mildly alkaline monzonitic magmatism in the Fuegian Andes of Argentina [PDF]

, 2009
Mauricio González Guillot, M. Escayola, Rogelio Daniel Acevedo, Márcio Martins Pimentel, G. Seraphim, Joaquín A. Proenza, Isidoro Bernardo Abel Schalamuk   +6 more
openalex   +1 more source

Palaeoproterozoic rift-related alkaline magmatism in Bari area, Son valley, Central India

Geosystems and Geoenvironment
Earlier studies on Palaeoproterozoic (∼1800 Ma) alkaline (shoshonitic) rocks comprised of limited petrochemical data on the Bari syenite and other contiguous felsic rocks emplaced in anorogenic rift setting along the Son-Narmada North Fault (SNNF). Using
G. Mageswarii, Meenal Mishra, Vaibhava Srivastava, Hari B. Srivastava, M. Satyanarayanan, J.P. Shrivastava   +5 more
doaj   +1 more source