Browsing Tag
Seismology
2 posts
Iron Oxide’s Resilience in the Earth’s Depths Against Intense Temperatures and Pressures
Situated at the juncture between Earth's iron metal core and the dense rocky mantle above, the core-mantle boundary (CMB) constitutes a realm characterized by extremes—featuring temperatures soaring into the thousands of degrees Fahrenheit and pressures surpassing a million times those experienced at the Earth's surface. Despite its seeming remoteness from our everyday terrestrial environment, material plumes emanating from the CMB can gradually ascend through the planet over tens of millions of years, exerting a profound influence on the chemistry, geological structure, and plate tectonics of the surface world where human life unfolds.
Contemporary Earthquakes Could Stem from 1800s Seismic Activity: A Possible Aftershock Connection
During the 1800s, the continental interior of North America witnessed some of the most powerful earthquakes recorded in U.S. history. Nearly two centuries later, a study published in the Journal of Geophysical Research: Solid Earth suggests that the central and eastern United States may still be undergoing aftershocks stemming from those historical events.