Tectono-Metamorphic Evolution of the Northern Dom Feliciano Belt Foreland, Santa Catarina, Brazil: Implications for Models of Subduction-Driven Orogenesis

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985831%3A_____%2F22%3A00554970" target="_blank" >RIV/67985831:_____/22:00554970 - isvavai.cz</a>

Alternative codes found

RIV/00025798:_____/22:10168145

Result on the web

<a href="https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2021TC007014" target="_blank" >https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2021TC007014</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1029/2021TC007014" target="_blank" >10.1029/2021TC007014</a>

Result language

angličtina

Original language name

Tectono-Metamorphic Evolution of the Northern Dom Feliciano Belt Foreland, Santa Catarina, Brazil: Implications for Models of Subduction-Driven Orogenesis

Original language description

The Dom Feliciano Belt in southern Brazil and Uruguay represents the western half of a Neoproterozoic orogenic belt located in the southern portion of the South Atlantic Neoproterozoic Orogenic System. Current interpretations are divided as to the nature of orogenesis in this belt, in part owing to lacking geochronological constraints. Metamorphosed and deformed supracrustal sequences of the Brusque Complex in the northern Dom Feliciano Belt, representing part of the orogenic foreland, record the onset and duration of crustal thickening. Structural analysis and pressure–temperature estimates indicate that the complex reached peak regional metamorphic conditions of 540–570°C and 5.5–6.7 kbar during thrusting and burial, consistent with orogenic metamorphism and early crustal thickening. Garnet–whole rock Lu–Hf and Sm–Nd isochron ages date this event to between circa 660–650 Ma. Ar–Ar dating of mica suggests thrust-controlled exhumation and partial cooling by circa 635 Ma, and that localized deformation occurred into the late Ediacaran. Our results show that the orogenic foreland reached metamorphic conditions typical for crustal thickening 20–30 million years prior to the onset of massive magmatic activity in the hinterland. Such a delay is typical of hot, internal parts of orogens, which supports interpretations that hinterland magmatism in the northern Dom Feliciano Belt represents post-collisional magmatism and not arc magmatism above a subduction zone. Instead, we suggest that orogenesis in the northern Dom Feliciano Belt was initiated by rift-basin inversion driven by far-field forces transmitted through the crust in an intracontinental rift or back-arc rift setting.

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/GA18-24281S" target="_blank" >GA18-24281S: Did the West-Gondwana orogens form by inversion of long-lived rift domains?</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2022

Confidentiality

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

Name of the periodical

Tectonics

ISSN

0278-7407

e-ISSN

1944-9194

Volume of the periodical

41

Issue of the periodical within the volume

2

Country of publishing house

US - UNITED STATES

Number of pages

35

Pages from-to

e2021TC007014

UT code for WoS article

000763564800017

EID of the result in the Scopus database

2-s2.0-85125418116