Magmatic plumbing of a large Permian caldera exposed to a depth of 25 km

被引：123

作者：

Quick, J. E. ^{[1
]}

Sinigoi, S. ^{[2
]}

Peressini, G. ^{[2
]}

Demarchi, G. ^{[2
]}

Wooden, J. L. ^{[3
]}

Sbisa, A. ^{[2
]}

机构：

[1] So Methodist Univ, Dallas, TX 75275 USA

[2] Univ Trieste, Dipartimento Sci Terra, I-34127 Trieste, Italy

[3] Stanford Univ, Palo Alto, CA 94305 USA

来源：

GEOLOGY | 2009年 / 37卷 / 07期

关键词：

IVREA-VERBANO ZONE; LARGE MAFIC INTRUSION; STRONA-CENERI ZONES; SERIE DEI LAGHI; U-PB ZIRCON; SOUTHERN ALPS; CONTINENTAL-CRUST; CROSS-SECTION; LONG VALLEY; EVOLUTION;

D O I：

10.1130/G30003A.1

中图分类号：

P5 [地质学];

学科分类号：

0709 ; 081803 ;

摘要：

We report evidence for a >= 13-km-diameter Permian caldera associated with a renowned section through the continental crust comprising the Ivrea-Verbano Zone and Serie dei Laghi of northwest Italy. Correlation of ages of volcanic and middle to deep crustal plutonic rocks suggests that they constitute an unprecedented exposure of a subcaldera magmatic plumbing system to a depth of 25 km, and points to a cause and effect link between intrusion of mantle-derived basalt in the deep crust, and large-scale, silicic volcanism.

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收藏

页码：603 / 606

页数：4

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