Logarithmic Growth of Dikes From a Depressurizing Magma Chamber
نویسندگان
چکیده
منابع مشابه
Magma chamber behavior beneath a volcanic edifice
[1] The construction of a large volcanic edifice at Earth’s surface generates stresses in the upper crust whose magnitude is comparable to those of tectonic stresses and overpressures within a magma chamber. We study how this affects eruption behavior. Analytical calculations are carried out in two dimensions for a cylindrical reservoir with an internal overpressure in an elastic half-space wit...
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The Isti Su hot spring is located in southeast of Salmas, in Western Azerbaijan, Iran. The area is a small part of Sanandaj-Sirjan geological zone which hosts many hot springs. The magma chamber of Salmas region is the main heat source of the hot springs in Isti Su area. Abundant rainfall and relatively long duration of snowfall as well as several deep faults in the area create the best conditi...
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How much magma needs to be added to a shallow magma chamber to cause rupture, dyke injection, and a potential eruption? Models that yield reliable answers to this question are needed in order to facilitate eruption forecasting. Development of a long-lived shallow magma chamber requires periodic influx of magmas from a parental body at depth. This redistribution process does not necessarily caus...
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One of the greatest remaining problems in modern volcanology is the process by which volcanic eruptions are triggered. It is generally accepted that eruptions are preceded by magma intrusion [Sigurdsson and Sparks, 1978]. The degree of interaction between previously ponded magma in a chamber and newly intruded magma determines the nature and rate of eruption and also the chemistry of erupted la...
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Strontiu• isotope data from three larg e plutons interpreted as derived from dynamic mag• chambers (Hill, this issue; Hill et al., this issue) show the existence of pronounced isotopic heteroEeneity within each unit. Ranges of calculated initial 8?St/BeSt are unit I, 0.70600.7076; unit II, 0.7060-0.7074; unit III, 0.70580.7073. A limited sample of mafic inclusions and dyke rocks, interpreted as...
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ژورنال
عنوان ژورنال: Geophysical Research Letters
سال: 2020
ISSN: 0094-8276,1944-8007
DOI: 10.1029/2019gl086230