Results 81 to 90 of about 74,067 (261)
Feeding of a magma chamber by an ascending magma bubble
Geophysical Journal International, 2021 SUMMARY There is evidence that magma chambers are not fed by a continuous flow, but in the form of discrete magma batches. The possibility is considered that the chamber is fed by a magma bubble ascending through the region underneath, driven by buoyancy force.
openaire +1 more source
The large-scale surface uplift in the Altiplano-Puna region of Bolivia: A parametric study of source characteristics and crustal rheology using finite element analysis [PDF]
, 2013 This paper focuses on the driving mechanism behind a 70 km wide region of ground uplift centered on Uturuncu volcano, in the Altiplano-Puna region of southern Bolivia.
Hickey, James +2 more
core +1 more source
Dispersal, source and glass chemistry of a third tephra unit within Iceland's Settlement Layer
Boreas, EarlyView.Tephra layers may be studied to understand the dynamics and sequence of past explosive volcanism. In Iceland, the distinctive Settlement Layer (AD ~877) underlies almost all archaeological evidence for the Norse Settlement and is preserved in soils across Iceland and as cryptotephra overseas.
Conner A. G. Morison +3 more
wiley +1 more source
Earth Sciences Research Journal, 2019 In this study, the metal-non-metal mineral gas-water hydrothermal concept is used to analyze the movement channels of magmatic heating water. Further, the concept of fractures-faults-cracks microfissures hierarchical configuration of the movement ...
Ke Sun +4 more
doaj +1 more source
Geochemistry, Geophysics, Geosystems, 2020 Large silicic magma reservoirs preferentially form in the upper crust of extensional continental environments. However, our quantitative understanding of the link between mantle magmatism, silicic reservoirs, and surface deformation during rifting is ...
J. Gottsmann +4 more
doaj +1 more source
Towards a Generalized Cayley–Dickson Construction through Involutive Dimagmas
MathematicsA generalized construction procedure for algebraic number systems is hereby presented. This procedure offers an efficient representation and computation method for complex numbers, quaternions, and other algebraic structures.
Nelson Martins-Ferreira +1 more
doaj +1 more source
Computadores aplicados a la clasificación química de las rocas ígneas. Métodos C.l.P.W. y NIGGLI
Boletín Geológico, 1972 Existen diversos métodos para clasificar las rocas de acuerdo a su análisis químico. Uno de los más empleados ha sido el de C.I.P. W. que da una composición teórica calculada o normativa. Al contrario de la composición actual o modal de la misma. Esta
Humberto González lregui
doaj +1 more source
Topology‐based Visual Analysis of Hydrothermal Plumes
Computer Graphics Forum, EarlyView.Abstract Hydrothermal plumes are turbulent structures of intense heat and mineral smoke that rise and disperse into the deep ocean. Existing models generally characterize these systems as a single axisymmetric plume originating from a point source. However, this assumption breaks down in weakly venting, spatially distributed systems, where low‐flux ...
Adhitya Kamakshidasan +3 more
wiley +1 more source
An analytical model for gas overpressure in slug-driven explosions : insights into Strombolian volcanic eruptions [PDF]
, 2012 Strombolian eruptions, common at basaltic volcanoes, are mildly explosive events that are driven by a large bubble of magmatic gas (a slug) rising up the conduit and bursting at the surface.
Scarlato, Piergiorgio +4 more
core +3 more sources
Yankuang ceshi, 2017 The Xinliaodong copper-polymetallic deposit of Eastern Guangdong Province is one of newly discovered deposits. The ore district belongs to tin, tungsten, and copper ore cluster in the southeast coast, which have a very good ore-forming geological ...
FAN Fei-peng +8 more
doaj +1 more source