Antle Flow News Today

Through seismic imaging, varying geometries of slab subduction are noted throughout the mantle. While some slabs remain mostly unaffected when penetrating down to the lower mantle (e.g. Mariana plate/trench), others appear to flatten out and lie along the 660 km discontinuity (e.g. Izanagi plate). Penetrating slabs with moderate dip angles (e.g. South American plate/Peru-Chile trench) are also observed. The exact cause of these varying geometries is largely unknown. This study attempts to identi...

The magnetic field of Earth and its behaviour over time is linked to its origin within Earth’s liquid outer core. Complex internal processes that operate within the outer core are not only responsible for the creation of the geomagnetic field, but also the magnetic field’s strength, stability, and position on Earth. The magnetic field acts as a critical barrier of protection, shielding Earth from harmful solar radiation from the sun and confining Earth’s atmosphere beneath the exosphere. A...

The Finke River in central Australia is counted among the world's oldest drainage systems; this raises the prospect of investigating how (tectonic and sub-lithospheric) processes have shaped the landscape in the long term. The Finke's upper reaches display an enigmatic set of intertwined active and relict bedrock gorges that suggest a complex history of incision, aggradation and re-incision. We measured cosmogenic 10Be and 26Al in fluvial gravels preserved in the gorges, and we applied...

Abstract During the Paleozoic, sedimentary basins developed within Gondwana without evolving to diverging plate boundaries. Such intracontinental basins present long subsidence histories with multiple phases of accelerated subsidence that are not always easily explained by far-field tectonic forces, and may be driven by processes other than rifting and thermal subsidence. Here we investigate the subsidence of Paleozoic Australian intracontinental basins by comparing one-dimensional backstripped...