Mineral fabrics in high-level intrusions recording crustal strain and volcano-tectonic interactions: the Shellenbarger pluton, Sierra Nevada, California

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985831%3A_____%2F17%3A00480055" target="_blank" >RIV/67985831:_____/17:00480055 - isvavai.cz</a>

Alternative codes found

RIV/00216208:11310/17:10389340

Result on the web

<a href="http://dx.doi.org/10.1144/jgs2015-151" target="_blank" >http://dx.doi.org/10.1144/jgs2015-151</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1144/jgs2015-151" target="_blank" >10.1144/jgs2015-151</a>

Result language

angličtina

Original language name

Mineral fabrics in high-level intrusions recording crustal strain and volcano-tectonic interactions: the Shellenbarger pluton, Sierra Nevada, California

Original language description

The Minarets caldera is a volcano-plutonic complex in the Sierra Nevada, California, that exemplifies complex interactions between volcanism and tectonic deformation in continental-margin arcs. Caldera evolution commenced with emplacement of pre-collapse rhyolitic ash-flow tuff, followed by collapse and deposition of volcanic breccia and rhyodacitic ash-flow tuff. Subsequently, the volcanic rocks were deformed along the regional Bench Canyon shear zone. The caldera centre was then intruded by the resurgent c. 100 Ma steep-sided Shellenbarger granite pluton, which steepened the shear zone foliation. The pluton was overprinted by syn-to post-magmatic similar to NNE-SSW horizontal shortening, the same shortening was documented in several other Late Cretaceous syntectonic plutons in the Sierra Nevada and interpreted to record dextral transpression during convergence of the Farallon and North American plates. To explain the unusual tectonic fabric in the shallow-level Shellenbarger pluton, we develop a general model for strain partitioning in syntectonic magma bodies emplaced at various crustal levels. We propose that shallow intrusions, isolated within stiff crust, may tend to accommodate minor pure shear strain whereas simple shear dominates along weak faults and shear zones. By contrast, a rheological reversal is crossed deeper in the crust and magma bodies become the weakest, simple shear-dominated parts of the system.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10505 - Geology

Project

<a href="/en/project/GAP210%2F12%2F1385" target="_blank" >GAP210/12/1385: Calderas as indicators of thermal-mechanical evolution of subvolcanic magma chambers</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2017

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Journal of the Geological Society

ISSN

0016-7649

e-ISSN

—

Volume of the periodical

174

Issue of the periodical within the volume

2

Country of publishing house

GB - UNITED KINGDOM

Number of pages

16

Pages from-to

193-208

UT code for WoS article

000396821200001

EID of the result in the Scopus database

2-s2.0-85014627468