Tag

Earthsciences

All articles tagged with #earthsciences

"Unveiling the Secrets Behind Diamond Eruptions and Their Tectonic Origins"
science-and-environment2 years ago

"Unveiling the Secrets Behind Diamond Eruptions and Their Tectonic Origins"

Scientists at the University of Southampton have discovered that diamonds are brought to the Earth's surface by powerful kimberlite eruptions, which are triggered by the movement of tectonic plates. These eruptions, reaching speeds of up to 83 miles per hour, occur at intervals of 22 to 30 million years and are linked to significant geological events like the breakup of supercontinents. The research, which involved statistical analysis and machine learning, could help locate new diamond deposits and has provided deeper understanding of Earth's geological processes.

"Deciphering Archean Plate Tectonics: Between Observations and Theories"
science-and-technology2 years ago

"Deciphering Archean Plate Tectonics: Between Observations and Theories"

A new study by Prof. Yong-Fei Zheng revises the traditional plate tectonics theory to better interpret Archean geological phenomena, suggesting that early Earth's plate tectonics involved both bottom-up and top-down processes, such as mantle plumes and subduction. The study integrates observations of high mantle temperatures, thick basaltic crust, and a primitive mantle composition to provide a coherent framework for understanding the formation and evolution of Archean continental crust. This holistic approach challenges the notion that plate tectonics did not apply to early Earth and offers insights into the transition from stagnant lid to mobile lid tectonics, contributing to our knowledge of Earth's geodynamic history. The research is published in Science China Earth Sciences.