Subduction[Some of the water pools are dragged along by the pool floor, while others float up through the ground. The latter are accompanied by several arrows pointing up to indicate upwards movement. These are labeled:] Upward Migration[
A seismic imaging instrument trails behind a research vessel during a survey of New Zealand’s Hikurangi subduction zone. Led by the University of Texas Institute for Geophysics, the survey found a vast and ancient water reservoir buried miles beneath the seafloor. Credit: University o...
To address the main question – how to keep the sediment surface close to sea-level across the entire basin during rifting – it is necessary to generate a source of buoyancy proportional to the degree of stretching. Subsequently, the buoyancy needs to be lost over a short period of time fo...
What is a fault block mountain and how is it formed? Why do climates near the coasts tend to be more moderate than in the middle of the continent? What is the difference between converging and diverging waves? What happens to a converging wave after it has converge...
“hot ice”. This exotic body-centred cubic (bcc) crystal phase forms at ambient temperatures at pressures above 2.3 GPa (about 23,000 times atmospheric pressure at sea level) and it has been theorized to exist in cold subduction zones within the Earth’s crust as well as on Saturn...
(which promotes shear localization and long-lived weak zones) combines with transient mantle flow and migrating proto-subduction, it leads to the accumulation of weak plate boundaries and eventually to fully formed tectonic plates driven by subduction alone. We simulate this process using a grain ...
(quasi-repeaters) with a similar focal mechanism has been recently designed3. Repeaters have been observed in different tectonic environments4,6,7,8,9,10and most notably at different subduction zones, where they are attributed to the repeated activation of asperities along the slab interface11,12...