Electrical resistivity tomography revealing the internal structure of monogenetic volcanoes

被引：42

作者：

Barde-Cabusson, Stephanie ^{[1
]}

Bolos, Xavier ^{[1
]}

Pedrazzi, Dario ^{[1
]}

Lovera, Raul ^{[2
]}

Serra, Guillem ^{[3
]}

Marti, Joan ^{[1
]}

Casas, Albert ^{[2
]}

机构：

[1] CSIC, ICTJA, Inst Earth Sci Jaume Almera, E-08028 Barcelona, Spain

[2] Univ Barcelona, Fac Geol, Dept Geochem Petrol & Geol Prospecting, Econ & Environm Geol & Hydrol Grp, Barcelona, Spain

[3] Univ Politecn Cataluna, Barcelona, Spain

来源：

GEOPHYSICAL RESEARCH LETTERS | 2013年 / 40卷 / 11期

关键词：

monogenetic volcanoes; electrical resistivity tomography; structural volcanology; garrotxa volcanic zone; BASALTIC VOLCANOS; CENTRAL-EUROPE; MAAR; WESTERN; FIELD;

D O I：

10.1002/grl.50538

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

Eruptive activity of individual monogenetic volcanoes usually lasts a few days or weeks. However, their short lifetime does not always mean that their dynamics and structure are simple. Monogenetic cones construction is rarely witnessed from the beginning to the end, and conditions for observing their internal structure are hardly reached. We provide high-resolution electrical resistivity sections (10m electrode spacing) of three monogenetic cones from northeastern Spain, comparing our results to geological observations to interpret their underground continuation. The 100m maximum depth of exploration provides information on almost the entire edifices, highlighting the relationships between Strombolian and hydromagmatic deposits in two multiphase edifices. A main observation is a column of distinct resistivity centered on the Puig d'Adri volcano, which we interpret as the eruptive conduit. This method can provide valuable information on the past volcanic dynamics of monogenetic volcanic fields, which has real implications for the forecast of future activity

引用

页码：2544 / 2549

页数：6

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