Abstract
In central Australia, an apparently coeval gneiss dome (Entia Dome) developed adjacent to a thrust belt (Arltunga Nappe Complex) within an intracratonic setting. Here we employ a combination of fieldwork, geochronology, and numerical modeling to investigate the structure and tectonic evolution of these features. We present a structural model linking an extensional domain comprising the Entia Dome, across a transitional zone containing the Bruna décollement zone and the Illogwa shear zone, into a contractional zone comprising thrusts and duplexes of the Arltunga Nappe Complex. Supported by numerical modeling, we propose a tectonic model in which the dome and nappe complex formed synchronously because of the convergent gravitational collapse of the 30–40-km-deep Paleozoic Harts Range rift.
Original language | English (US) |
---|---|
Pages (from-to) | 210-215 |
Number of pages | 6 |
Journal | Geology |
Volume | 52 |
Issue number | 3 |
DOIs | |
State | Published - 2024 |
Bibliographical note
Publisher Copyright:© 2024 Geological Society of America. For permission to copy, contact editing@geosociety.org.