scholarly journals Morphology, Effusion Rates, and Petrology of Postglacial Lavas of Laguna del Maule Volcanic Field, Chilean Andes, and Implications for Their Plumbing System

2018 ◽  
Author(s):  
Francisco Cáceres ◽  
Ángelo Castruccio ◽  
Miguel A. Parada
Keyword(s):  
Volcanic Field ◽  
Plumbing System ◽  
Effusion Rates ◽  
Chilean Andes

scholarly journals Evidence of active magmatic rifting at the Ma’Alalta volcanic field (Afar, Ethiopia)

2021 ◽  
Vol 83 (6) ◽  
Author(s):  
Gianmaria Tortelli ◽  
Anna Gioncada ◽  
Carolina Pagli ◽  
Mauro Rosi ◽  
Laura De Dosso ◽  
...  
Keyword(s):  
Seismic Data ◽  
Volcanic Field ◽  
Lava Flows ◽  
Magmatic Activity ◽  
Magma Storage ◽  
Plumbing System ◽  
Mafic Lava ◽  
Cinder Cones ◽  
Mafic Rocks ◽  
Seismic Networks

AbstractDuring continental rifting, strain and magmatism are believed to localize to narrow magmatic segments, while the rift margin is progressively abandoned. We integrate volcanological, geochemical, petrological and seismic data from the Ma’Alalta volcanic field (MVF) near the western margin of Afar, to show that the MVF is an active magmatic segment. Magmatism in MVF initiated with lava flows and large-volume, caldera-forming ignimbrites from a central edifice. However, the most recent magmatic activity shifted towards mafic lava fields, cinder cones and obsidian-rich silicic domes erupted from vents aligned NNW-SSE, defining a ~ 35-km-long magmatic segment. Along the same area, a NNW-SSE alignment of earthquakes was recorded by two local seismic networks (2005–2009 and 2011–2013). The geochemistry of the mafic rocks is similar to those of nearby axial volcanoes. Inferred magma storage depth from mineral geobarometry shows that a shallow, silicic chamber existed at ~ 5-km depth below the stratovolcano, while a stacked plumbing system with at least three magma storage levels between 9 and 24 km depth fed the recent basalts. We interpret the wide set of observations from the MVF as evidence that the area is an active magmatic segment, showing that localised axial extension can be heavily offset towards the rift margin.

THE CERRO COLORADO CINDER CONE, CERROS DEL RIO VOLCANIC FIELD: A STUDY OF MELT EVOLUTION AND PLUMBING SYSTEM DYNAMICS

2016 ◽  
Author(s):  
Jeffrey J. Falance ◽  
◽  
Joao Lages ◽  
Jennifer Lindline ◽  
Daniel P. Grondin ◽  
...  
Keyword(s):  
System Dynamics ◽  
Cinder Cone ◽  
Volcanic Field ◽  
Plumbing System ◽  
Del Rio ◽  
Melt Evolution ◽  
Cerro Colorado

scholarly journals Stratigraphy of Architectural Elements of a Buried Monogenetic Volcanic System

2019 ◽  
Vol 11 (1) ◽  
pp. 581-616 ◽  
Author(s):  
Alan Bischoff ◽  
Andrew Nicol ◽  
Jim Cole ◽  
Darren Gravley
Keyword(s):  
Geothermal Energy ◽  
Sedimentary Basin ◽  
Sedimentary Basins ◽  
Volcanic Field ◽  
Plumbing System ◽  
Volcanic System ◽  
Architectural Elements ◽  
Stratigraphic Framework ◽  
Cone Type ◽  
Geological Evolution

Abstract Large volumes of magma emplaced and deposited within sedimentary basins can have an impact on the architecture and geological evolution of these basins. Over the last decade, continuous improvement in techniques such as seismic volcano-stratigraphy and 3D visualisation of igneous bodies has helped increase knowledge about the architecture of volcanic systems buried in sedimentary basins. Here, we present the complete architecture of the Maahunui Volcanic System (MVS), a middle Miocene monogenetic volcanic field now buried in the offshore Canterbury Basin, South Island of New Zealand. We show the location, geometry, size, and stratigraphic relationships between 25 main intrusive, extrusive and sedimentary architectural elements, in a comprehensive volcano-stratigraphic framework that explains the evolution of the MVS from emplacement to complete burial in the host sedimentary basin. Understanding the relationships between these diverse architectural elements allows us to reconstruct the complete architecture of the MVS, including its shallow (<3 km) plumbing system, the morphology of the volcanoes, and their impact in the host sedimentary basin during their burial. The plumbing system of the MVS comprises saucer-shaped sills, dikes and sill swarms, minor stocks and laccoliths, and pre-eruptive strata deformed by intrusions. The eruptive and associated sedimentary architectural elements define the morphology of volcanoes in the MVS, which comprise deep-water equivalents of crater and cone-type volcanoes. After volcanism ceased, the process of degradation and burial of volcanic edifices formed sedimentary architectural elements such as inter-cone plains, epiclastic plumes, and canyons. Insights from the architecture of the MVS can be used to explore for natural resources such as hydrocarbons, geothermal energy and minerals in buried and active volcanic systems elsewhere.

Intra-cone plumbing system and eruptive dynamics of small-volume basaltic volcanoes: A case study in the Calatrava Volcanic Field

2017 ◽  
Vol 348 ◽  
pp. 82-95 ◽  
Author(s):  
M. Carracedo-Sánchez ◽  
F. Sarrionandia ◽  
B. Ábalos ◽  
J. Errandonea-Martin ◽  
J.I. Gil Ibarguchi
Keyword(s):  
Small Volume ◽  
Volcanic Field ◽  
Plumbing System ◽  
Eruptive Dynamics ◽  
Basaltic Volcanoes

Volcano-structural analysis of La Garrotxa Volcanic Field (NE Iberia): Implications for the plumbing system

2015 ◽  
Vol 642 ◽  
pp. 58-70 ◽  
Author(s):  
Xavier Bolós ◽  
Joan Martí ◽  
Laura Becerril ◽  
Llorenç Planagumà ◽  
Pablo Grosse ◽  
...  
Keyword(s):  
Structural Analysis ◽  
Volcanic Field ◽  
Plumbing System ◽  
Garrotxa Volcanic Field

Detailed timescale of magma-chamber assembly and eruption revealed by ultra-high precision zircon U-Pb geochronology on a Permian caldera plumbing system, Sesia Magmatic System (southern Alps, Italy)

2020 ◽  
Author(s):  
Lorenzo Tavazzani ◽  
Jörn-Frederik Wotzlaw ◽  
Rita Economos ◽  
Silvano Sinigoi ◽  
Gabriella Demarchi ◽  
...  
Keyword(s):  
High Precision ◽  
Volcanic Field ◽  
Southern Alps ◽  
Isotopic Dilution ◽  
Caldera Collapse ◽  
Ionization Mass ◽  
Plumbing System ◽  
Magmatic System ◽  
Zircon Crystallization ◽  
Single Zircon

&lt;p&gt;In recent years, technical developments in isotope dilution thermal ionization mass spectrometry technique (ID-TIMS) have pushed the precision of single zircon U-Pb geochronology to new limits. The use of interlaboratory calibrated U-Pb tracer solutions for isotopic dilution [1] paired with using newly developed high ohmic resistors (10&lt;sup&gt;13&lt;/sup&gt;Ohm) in Faraday cup amplifiers, allow the determination of single zircon dates with precision and accuracy at the 0.02 % level [2].This level of analytical precision makes the ID-TIMS technique a geochronological tool able to unravel the detailed temporal evolution of magmatic plumbing systems older than the Mesozoic Era.&lt;/p&gt;&lt;p&gt;In the southern Alps, a thick sliver of continental crust, tilted and exhumed during the Alpine orogeny, is exposed as a complete crustal cross-section (Ivrea crustal section). This section preserves a transcrustal magmatic system, developed in an extensional environment in &lt;em&gt;ca.&amp;#160;&lt;/em&gt;4 My during the Early Permian [3]. Its upper crustal portion consists of a zoned granitic intrusion (Valle Mosso pluton) overlaid by a dominantly rhyolitic caldera-related volcanic field (Sesia Caldera).&lt;/p&gt;&lt;p&gt;To obtain a time-integrated view of the petrological evolution of this plumbing system, we combine a new ultra high precision ID-TIMS zircon U-Pb dataset with zircon geochemistry from samples collected in compositionally and texturally different units of the Valle Mosso pluton and Sesia Caldera. All the analyzed units are coeval within 700 ky and the overall trends in zircon trace elements (Eu*/Eu, Zr/Hf, Sm/Yb) suggest an evolution of the reservoir dominated by fractional crystallization. The data show a ca. 200 ky gap in zircon crystallization, following the injection of recharge magma that triggered the eruption of the crystal-rich rhyolite followed by caldera collapse [3]. This suggests mass addition and rejuvenation of a partly crystallized mush, which temporarily hindered zircon crystallization. On the other hand, crystal-poor rhyolites, characterized by a younger eruption age and evolved zircon composition, likely represent late stage evacuation of evolved melt lenses extracted from a mostly crystalline framework.&lt;/p&gt;&lt;p&gt;[1] Condon, D. J., et al., 2015, Geochim. Cosmochim. Acta, &lt;strong&gt;164&lt;/strong&gt;, 464-480.&lt;/p&gt;&lt;p&gt;[2] Wotzlaw, J. F., et al., 2017, J. Anal. At. Spectrom., &lt;strong&gt;32&lt;/strong&gt;, 579-586.&lt;/p&gt;&lt;p&gt;[3] Karakas, O., et al., 2019, Geology, &lt;strong&gt;47&lt;/strong&gt;, 1-5.&lt;/p&gt;

scholarly journals Translithospheric magma plumbing system of intraplate volcanoes as revealed by electrical resistivity imaging

Geology ◽  
2021 ◽  
Author(s):  
Yabin Li ◽  
Aihua Weng ◽  
Wenliang Xu ◽  
Zonglin Zou ◽  
Yu Tang ◽  
...  
Keyword(s):  
Volcanic Field ◽  
Plumbing System ◽  
Magnetotelluric Data ◽  
Magma Plumbing System ◽  
Magma Supply ◽  
Plumbing Systems ◽  
Vertically Aligned ◽  
Pacific Slab ◽  
Low Degrees ◽  
Magma Plumbing

The magma plumbing systems of volcanoes in subduction and divergent tectonic settings are relatively well known, whereas those of intraplate volcanoes remain elusive; robust geophysical information on the magma pathways and storage zones is lacking. We inverted magnetotelluric data to image the magma plumbing system of an intraplate monogenetic volcanic field located above the stagnant Pacific slab in northeast China. We identified a complex, vertically aligned, low-resistivity anomaly system extending from the asthenosphere to the surface consisting of reservoirs with finger- to lens-like geometries. We show that magma forms as CO2-rich melts in a 150-km-deep asthenospheric plume crossing the whole lithosphere as hydrated melt, inducing underplating at 50 km depth, evolving in crustal reservoirs, and erupting along dikes. Intraplate volcanoes are characterized by low degrees of melting and low magma supply rates. Their plumbing systems have a geometry not so different from that of volcanoes in subduction settings.

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