Growth of accretionary wedges and pulsed ophiolitic melange formation by successive subduction of trench-parallel volcanic elevations

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F14%3A10282973" target="_blank" >RIV/00216208:11310/14:10282973 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1111/ter.12103" target="_blank" >http://dx.doi.org/10.1111/ter.12103</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1111/ter.12103" target="_blank" >10.1111/ter.12103</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Growth of accretionary wedges and pulsed ophiolitic melange formation by successive subduction of trench-parallel volcanic elevations

Popis výsledku v původním jazyce

Fault-bounded coherent belts alternating with belts of melanges are common in accretionary wedges and are usually interpreted as a result of imbrication along subduction zone megathrusts. Using the Neoproterozoic/early Cambrian Blovice accretionary complex (BAC), Bohemian Massif, as a case example, we present a new model for the origin of alternating belts through the repetition of several cycles of (1) off-scraping and deformation of trench-fill sediments to form the coherent units, interrupted by (2)arrival and subduction of linear, trench-parallel volcanic elevations. The latter process leads to an increase in the wedge taper, triggering mass-wasting and formation of olistostromes. At the same time, ophiolitic melanges form by disruption of an upper part of the volcanic ridge and incorporation of the disrupted oceanfloor succession into the olistostromes. Specifically, the BAC represents a complete section across an accretionary wedge and records three such major pulses of ophiolit

Název v anglickém jazyce

Growth of accretionary wedges and pulsed ophiolitic melange formation by successive subduction of trench-parallel volcanic elevations

Popis výsledku anglicky

Fault-bounded coherent belts alternating with belts of melanges are common in accretionary wedges and are usually interpreted as a result of imbrication along subduction zone megathrusts. Using the Neoproterozoic/early Cambrian Blovice accretionary complex (BAC), Bohemian Massif, as a case example, we present a new model for the origin of alternating belts through the repetition of several cycles of (1) off-scraping and deformation of trench-fill sediments to form the coherent units, interrupted by (2)arrival and subduction of linear, trench-parallel volcanic elevations. The latter process leads to an increase in the wedge taper, triggering mass-wasting and formation of olistostromes. At the same time, ophiolitic melanges form by disruption of an upper part of the volcanic ridge and incorporation of the disrupted oceanfloor succession into the olistostromes. Specifically, the BAC represents a complete section across an accretionary wedge and records three such major pulses of ophiolit

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

DB - Geologie a mineralogie

OECD FORD obor

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Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2014

Kód důvěrnosti údajů

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

Název periodika

Terra Nova

ISSN

0954-4879

e-ISSN

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Svazek periodika

26

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

8

Strana od-do

322-329

Kód UT WoS článku

000339259400009

EID výsledku v databázi Scopus

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