Advanced strain and mass transfer analysis in crustal-scale oroclinalbuckling and detachment folding analogue models

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00025798%3A_____%2F19%3A00000147" target="_blank" >RIV/00025798:_____/19:00000147 - isvavai.cz</a>

Alternative codes found

RIV/67985530:_____/19:00507764 RIV/00216208:11310/19:10398479

Result on the web

<a href="https://www.sciencedirect.com/science/article/pii/S0040195119301659?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0040195119301659?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.tecto.2019.05.001" target="_blank" >10.1016/j.tecto.2019.05.001</a>

Result language

angličtina

Original language name

Advanced strain and mass transfer analysis in crustal-scale oroclinalbuckling and detachment folding analogue models

Original language description

The PIV (particle image velocimetry) method became a standard tool for the calculation of displacement fields in physical geodynamic models. For understanding the deformation dynamics of geodynamic models, in our study, we implemented several post-processing algorithms on the derived displacement field and calculated the velocity and strain(-rate) components, such as the divergence of the velocity field, vorticity and shear strain-rate.In the model of oroclinal buckling, we focused on strain analysis of the upper crust and correlated the shear strain-rate, vorticity and divergence anomalies with visual deformation patterns in the upper crust. The divergence of velocity fields in these models correspond to the pop-up and pop-down belts oriented along the axial trace of the oroclinal bends. High shear strain-rate domains correlate with horizontal, isovolumic shear zones alongside these belts, while vorticity shows rotational trend of fold axial traces of the pop-up and pop-down belts, around orocline inflection.In another series of models, we simulated the development of melt-cored crustal scale detachment folds and employed the same set of parameters to investigate the ductile deformation visible in side-view of the model domain. We developed a method that allows tracing the divergence in subcells locked on target subdomains. We tracked and quantified melt flow between the melt source area at the bottom of the model and progressively developing folds. This mass transfer analysis revealed polyphase fold evolution, where initial fold perturbations quickly amplify as the melt accumulates in the triangular hinge sector below and between the rotating fold limbs. While the early amplification leads to decompression driving the melt into the hinge zone area between the limbs, the fold lock-up stage and continued attenuation of the vertical limbs is associated with melt expulsion from the fold interlimb domain back into the source layer, where it can be transferred laterally to the foreland.

Czech name

—

Czech description

—

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/GA16-17457S" target="_blank" >GA16-17457S: Melting the metagranitoids: important but poorly understood aspect of crust evolution</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2019

Confidentiality

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

Name of the periodical

Tectonophysics

ISSN

0040-1951

e-ISSN

—

Volume of the periodical

764

Issue of the periodical within the volume

neuvedeno

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

21

Pages from-to

88-109

UT code for WoS article

000472697900006

EID of the result in the Scopus database

2-s2.0-85066282608