Results 41 to 50 of about 120,010 (213)
Compositional trends of Icelandic basalts: Implications for short–length scale lithological heterogeneity in mantle plumes [PDF]
Lithological variations in the mantle source regions under mid-ocean ridges and ocean islands have been proposed to play a key role in controlling melt generation and basalt composition.
Maclennan, John, Shorttle, Oliver
core +1 more source
Tertiary-Quaternary intra-plate magmatism in Europe and its relationship to mantle dynamics [PDF]
, 2006 Anorogenic intra-plate magmatism was widespread in Europe from early Tertiary to Recent times, extending west to east from Spain to Bulgaria, and south to north from Sicily to northern Germany. Magmatism is spatially and temporally associated with Alpine-
Wilson, M., Downes, Hilary
core +2 more sources
Geophysical Research LettersThe causes and global distribution of intraplate volcanism remain poorly understood, particularly the occurrence of scattered magmatism unrelated to large igneous provinces (LIPs).
X. Zhu, A. Balázs, T. Gerya, Z. Sun
doaj +1 more source
Science, 2001 Trieloff et al . ([1][1]) provided neon isotope data to argue that mantle neon originates as a trapped component in meteorites rather than having a pristine solar composition. That finding, if true, has important consequences for understanding the mechanism of volatile input into the mantle ...
Ballentine, C, Porcelli, D, Wieler, R
openaire +3 more sources
Cuttings, Combings, Fettlings and Flock: Gender and Australian Wool ‘Waste’, 1900–1950
Gender &History, EarlyView.ABSTRACT As Australia's wool industry produced vast amounts of fine fleece from the nineteenth century, the wool processing and clothes manufacturing industries generated waste – products like cuttings, combings, fettlings and flock. Salvaged and then sold to waste merchants, these and other materials had a second life.
Lorinda Cramer
wiley +1 more source
, 2001 The assumption that stationary hotspots underlie the Earth’s lithospheric plates has been most important in the development of the theory of plate tectonics. According to the fixed hotspot hypothesis seamount trails are formed by volcanism penetrating the
Antretter, Maria
core +1 more source
Magmatism of the Kenya Rift Valley : a review. [PDF]
, 2003 Tertiary–Recent magmatism in the Kenya Rift Valley was initiated c. 35 Ma, in the northern part of Kenya. Initiation of magmatism then migrated southwards, reaching northern Tanzania by 5–8 Ma.
MacDonald, Raymond
core +2 more sources
Influence of Grain Size Evolution on Mantle Plume and LLSVP Dynamics
Geochemistry, Geophysics, GeosystemsRecent seismic tomography models suggest large‐radius primary plumes originating from the core‐mantle boundary, with grain size variations potentially explaining these observations. Additionally, grain size variations are thought to enhance the long‐term
Yusen Liu +4 more
doaj +1 more source
Geochemical Constraints on the Structure of the Earth's Deep Mantle and the Origin of the LLSVPs
Geochemistry, Geophysics, Geosystems, 2021 Geophysical analysis of the Earth's lower mantle has revealed the presence of two superstructures characterized by low shear wave velocities on the core‐mantle boundary.
Matthew Gleeson +4 more
doaj +1 more source
Carney's Davos Address and the (Contested) Re‐Imagining of Middle Powers
Global Policy, EarlyView.ABSTRACT By privileging the intervention of Canada's prime minister, Mark Carney, in his January 2026 Davos address, the work aims to re‐engage with the debate around middle powers extending from academic scrutiny to instrumental practice. On core themes, Carney's address provides exceptional focal points pertaining to the role of this category of ...
Andrew F. Cooper
wiley +1 more source