The Santa Fe Intrusion and Other Magmatic Bodies Under the Chichon Volcano Area (Mexico): Inferences from Aeromagnetic and New Petrologic-Geochronologic Data

被引:13
作者
Lopez-Loera, Hector [1 ]
Macias, Jose Luis [2 ]
Espindola, Juan Manuel [3 ]
Arce, Jose Luis [4 ]
Layer, Paul W. [5 ]
Torres-Gaytan, David Ernesto [1 ]
机构
[1] Inst Potosino Invest Cient & Tecnol AC, Geociencias Aplicadas, Camino Presa San Jose 2055,Lomas 4a Secc, San Luis Potosi 78216, SLP, Mexico
[2] Univ Nacl Autonoma Mexico, Unidad Michoacan, Inst Geofis, Campus Morelia,Antigua Carretera Patzcuaro 8701, Morelia 58059, Michoacan, Mexico
[3] Univ Nacl Autonoma Mexico, Inst Geofis, Ave Univ 3000, Mexico City 04510, DF, Mexico
[4] Univ Nacl Autonoma Mexico, Inst Geol, Ave Univ 3000, Mexico City 04510, DF, Mexico
[5] Univ Alaska, Coll Nat Sci, Math & Geophys Inst, Fairbanks, AK 99775 USA
关键词
Modern Chiapanecan Volcanic Arc; El Chichon volcano; Santa Fe diorite; Aeromagnetic surveys; Structure beneath volcanoes; 3D inversion susceptibility models; 2-DIMENSIONAL MAGNETIC BODIES; CARIBBEAN PLATE BOUNDARY; NORTHERN CENTRAL-AMERICA; EL-CHICHON; TRACE-ELEMENT; 1982; ERUPTION; ANALYTIC SIGNAL; DECAY CONSTANTS; SOUTHERN MEXICO; CHIAPAS;
D O I
10.1007/s10712-020-09591-8
中图分类号
P3 [地球物理学]; P59 [地球化学];
学科分类号
0708 ; 070902 ;
摘要
We review the current knowledge of the Pleistocene Modern Chiapanecan Volcanic Arc (MCVA). This arc is related to the subduction of the Cocos plate beneath the North American plate in the State of Chiapas, southeastern Mexico. The MCVA consists of large intrusive bodies, domes, eroded volcanic landforms, and the active El Chichon, which produced the disastrous 1982 eruption, the deadliest in Mexico's recorded history. The available geological knowledge, and new geological and aeromagnetic data on the arc, reveals a system composed of a sizeable intrusive body called the Santa Fe diorite, and small-size volcanoes such as El Chichon and Catedral, and extinct volcanoes associated with volcaniclastic deposits. A 3D-inversion of the aeromagnetic anomalies indicates that the Santa Fe diorite is a large intrusive body (27 km long, 4 km wide with a minimum volume of 1662 km(3)) while small volcanoes such as El Chichon have small-size magma chambers (similar to 7 km(3)). Interestingly, our models of the causative bodies for the aeromagnetic anomalies suggest that the El Chichon volcano, as well as of other volcanic areas in the region, are not linked directly to the Santa Fe intrusive. However, new 40Ar/39Ar dates for samples from the Santa Fe intrusive (2.2 Ma), the Catedral volcano (1.6 Ma), and a mafic enclave (1.09 Ma) hosted in 1982 Chichon deposits, along with the aeromagnetic anomalies and geochemical data confirm that these extrusive and intrusive structures belong to the MCVA. The chemistry of these structures suggests that magmas generated in the upper mantle by the subduction system evolved through different processes, such as crustal contamination for the Santa Fe diorite and Catedral volcano, and crystal fractionation for El Chichon volcano.
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页码:859 / 895
页数:37
相关论文
共 96 条
[1]   Repeated recharge, assimilation, and hybridization in magmas erupted from El Chichon as recorded by plagioclase and amphibole phenocrysts [J].
Andrews, Benjamin J. ;
Gardner, James E. ;
Housh, Todd B. .
JOURNAL OF VOLCANOLOGY AND GEOTHERMAL RESEARCH, 2008, 175 (04) :415-426
[2]  
Arce JL, 2015, ACTIVE VOLCANOES CHI, P1
[3]  
Arellano-Contreras U, 2012, EVALUACION GEOLOGICO
[4]   The Caribbean-North America-Cocos Triple Junction and the dynamics of the Polochic-Motagua fault systems: Pull-up and zipper models [J].
Authemayou, C. ;
Brocard, G. ;
Teyssier, C. ;
Simon-Labric, T. ;
Guttierrez, A. ;
Chiquin, E. N. ;
Moran, S. .
TECTONICS, 2011, 30
[5]  
Baez-Jorge F, 1985, CUANDO CIELO ARDIO S, P158
[6]   NUMERICAL CALCULATION OF FORMULA OF REDUCTION TO MAGNETIC POLE [J].
BARANOV, V ;
NAUDY, H .
GEOPHYSICS, 1964, 29 (01) :67-&
[7]  
Blakely R. J., 1996, Potential Theory in Gravity and Magnetic Applications, DOI 10.1017/CBO9780511549816
[8]   INTERPRETATION OF THE GRAVITY AND MAGNETIC-ANOMALIES OVER THE MULL TERTIARY INTRUSIVE COMPLEX, NW SCOTLAND [J].
BOTT, MHP ;
TANTRIGODA, DA .
JOURNAL OF THE GEOLOGICAL SOCIETY, 1987, 144 :17-28
[9]   On the influence of magma chambers in controlling the evolution of explosive volcanic eruptions [J].
Bower, SM ;
Woods, AW .
JOURNAL OF VOLCANOLOGY AND GEOTHERMAL RESEARCH, 1998, 86 (1-4) :67-78
[10]   Intermediate composition magma production in an intracontinental setting: Unusual andesites and dacites of the mid-Miocene Santa Rosa-Calico volcanic field, Northern Nevada [J].
Brueseke, Matthew E. ;
Hart, William K. .
JOURNAL OF VOLCANOLOGY AND GEOTHERMAL RESEARCH, 2009, 188 (1-3) :197-213