FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2775374150> ?p ?o ?g. }

• W2775374150 endingPage "424" @default.
• W2775374150 startingPage "404" @default.
• W2775374150 abstract "Abstract Advancing our knowledge of caldera volcanoes enables better assessment of hazard and more efficient harnessing of resources. In this paper we review developments in concepts of magma storage and transport during the life cycle of caldera plumbing systems. We draw together: a) geological, geochemical and petrological data from intrusions and eruption deposits; b) geophysical and geochemical data from modern restless calderas; and c) geological and structural evidence from ancient calderas as well as insights from numerical and analogue models. Overall, magma plumbing systems beneath calderas develop incrementally as magma rises, intrudes and rejuvenates. Eventually accumulation and eruption of a sufficient magma volume drives subsidence of the plumbing system roof to form a caldera. The magma plumbing system may then reside relatively unchanged or continue to re-intrude on a variety of scales. Consequences include continued eruptions, crustal resurgence, or new cycles of caldera formation. Large magma volumes characteristic of calderas may evolve as a single progressively-enlarging reservoir or through the rapid amalgamation of small, initially-independent magma pockets. Eruptible magmas may reside at depths of up to 17 km, but typically lie at shallower depths as a caldera system evolves. Timescales of sub-caldera magma residence reveal two remarkable concepts: (1) portions of melt within a magma may remain molten for > 106 years, and (2) melt can be created and mobilized in a few thousand years or less. Geophysical and geochemical data illustrate the present state of active sub-caldera plumbing systems and their development on timescales of hours to years. These studies commonly reveal aseismic, low-velocity zones at depths > 6 km with spatial extents that can be larger than the caldera. The seismic attributes are consistent with rock hosting magma bodies of variable volume and melt content. These are commonly overlain by shallower low-velocity zones linked with ground deformation. The exact nature of these shallower zones is unclear, but interpretations often include shallow sills and laccoliths, and hydrothermal circulation is likely a key process as well. Seismicity and geodetic data record the interplay between magma movement and crustal deformation at calderas. Together with evidence from field studies, numerical simulations and analogue models, such data show that magma migration at calderas may involve considerable lateral transport through dykes or sills to a site of eruption. While caldera-related magma intrusions commonly exploit structures produced by caldera subsidence, they may also follow regional tectonic structures that extend well beyond the border of the caldera. The increased structural complexity that occurs as a caldera evolves increases the permeability of the crust. This may promote small volume eruptions and shallow storage of magma in the post-collapse phase. Our review highlights the significant progress made in understanding the range of intrusion styles and timescales that define the magma plumbing beneath calderas. Yet there are still key questions that limit the application of this understanding to directly benefit humanity: (1) What are the limits to the detection of shallow magma bodies, and can we assess the eruption risks associated with magma bodies of different sizes, depths, compositions and crystal contents? (2) Is it viable to generate electricity by extracting heat directly from magma through the sub-caldera plumbing system? Geophysical and drillhole data from Krafla caldera, Iceland, show that rhyolite can exist undetected at shallow levels within the caldera and may not represent a hazard even when intersected by a borehole. Current work at Krafla is assessing the possibility of extracting geothermal energy from shallow magma bodies and/or superheated steam zones directly above. However, the extent and connectivity of this magma to larger volumes in time and space, as well as its applicability to other systems, may only be answered with continued focused magma drilling, geophysical experimentation and geological exploration." @default.
• W2775374150 created "2017-12-22" @default.
• W2775374150 creator A5009900923 @default.
• W2775374150 creator A5017421238 @default.
• W2775374150 creator A5028641924 @default.
• W2775374150 creator A5033844631 @default.
• W2775374150 creator A5050950154 @default.
• W2775374150 creator A5080346411 @default.
• W2775374150 date "2018-02-01" @default.
• W2775374150 modified "2023-09-29" @default.
• W2775374150 title "Magma plumbing beneath collapse caldera volcanic systems" @default.
• W2775374150 cites W1164523458 @default.
• W2775374150 cites W1503488347 @default.
• W2775374150 cites W1551269686 @default.
• W2775374150 cites W1570418624 @default.
• W2775374150 cites W1571084850 @default.
• W2775374150 cites W1579617531 @default.
• W2775374150 cites W1588176628 @default.
• W2775374150 cites W1773794422 @default.
• W2775374150 cites W1899688723 @default.
• W2775374150 cites W1925400352 @default.
• W2775374150 cites W1964636654 @default.
• W2775374150 cites W1964703171 @default.
• W2775374150 cites W1965128824 @default.
• W2775374150 cites W1965823020 @default.
• W2775374150 cites W1968555935 @default.
• W2775374150 cites W1970334697 @default.
• W2775374150 cites W1970786176 @default.
• W2775374150 cites W1973104805 @default.
• W2775374150 cites W1973111378 @default.
• W2775374150 cites W1973496586 @default.
• W2775374150 cites W1974412895 @default.
• W2775374150 cites W1975437671 @default.
• W2775374150 cites W1976867784 @default.
• W2775374150 cites W1977392315 @default.
• W2775374150 cites W1979397668 @default.
• W2775374150 cites W1980201701 @default.
• W2775374150 cites W1980774822 @default.
• W2775374150 cites W1981205462 @default.
• W2775374150 cites W1981206782 @default.
• W2775374150 cites W1981803171 @default.
• W2775374150 cites W1982238758 @default.
• W2775374150 cites W1982478822 @default.
• W2775374150 cites W1983817263 @default.
• W2775374150 cites W1986701070 @default.
• W2775374150 cites W1987848931 @default.
• W2775374150 cites W1988623108 @default.
• W2775374150 cites W1988958417 @default.
• W2775374150 cites W1989976872 @default.
• W2775374150 cites W1992312789 @default.
• W2775374150 cites W1994897322 @default.
• W2775374150 cites W1995290131 @default.
• W2775374150 cites W1996321008 @default.
• W2775374150 cites W1999035797 @default.
• W2775374150 cites W2000435363 @default.
• W2775374150 cites W2000503056 @default.
• W2775374150 cites W2000574213 @default.
• W2775374150 cites W2001832593 @default.
• W2775374150 cites W2001904234 @default.
• W2775374150 cites W2002217077 @default.
• W2775374150 cites W2003247029 @default.
• W2775374150 cites W2004174379 @default.
• W2775374150 cites W2005284674 @default.
• W2775374150 cites W2006585457 @default.
• W2775374150 cites W2007243168 @default.
• W2775374150 cites W2008712501 @default.
• W2775374150 cites W2009472753 @default.
• W2775374150 cites W2011005344 @default.
• W2775374150 cites W2013337551 @default.
• W2775374150 cites W2014505901 @default.
• W2775374150 cites W2014521287 @default.
• W2775374150 cites W2016174900 @default.
• W2775374150 cites W2016470462 @default.
• W2775374150 cites W2016609692 @default.
• W2775374150 cites W2018711623 @default.
• W2775374150 cites W2022332927 @default.
• W2775374150 cites W2022705227 @default.
• W2775374150 cites W2024639092 @default.
• W2775374150 cites W2026755419 @default.
• W2775374150 cites W2027868803 @default.
• W2775374150 cites W2027967260 @default.
• W2775374150 cites W2028062576 @default.
• W2775374150 cites W2028064116 @default.
• W2775374150 cites W2028941472 @default.
• W2775374150 cites W2029385518 @default.
• W2775374150 cites W2029735131 @default.
• W2775374150 cites W2031170639 @default.
• W2775374150 cites W2032029906 @default.
• W2775374150 cites W2036435535 @default.
• W2775374150 cites W2037320027 @default.
• W2775374150 cites W2037601751 @default.
• W2775374150 cites W2038099198 @default.
• W2775374150 cites W2038834627 @default.
• W2775374150 cites W2039345917 @default.
• W2775374150 cites W2040659190 @default.
• W2775374150 cites W2043186094 @default.
• W2775374150 cites W2043597394 @default.
• W2775374150 cites W2044057897 @default.

• next