Diachronous End-Permian Terrestrial Crises in North and South China

Earth Sciences, Geochemistry, Geology,
Permian-Triassic mass extinction   terrestrial ecosystems   climate change   paleontology   geochemistry   regional differences   heatwaves and aridity  

Terrestrial Ecosystem Crisis at the Permian-Triassic Boundary Academic Background The Permian-Triassic boundary (approximately 252 million years ago) marks one of the most severe mass extinction events in Earth’s history, devastating not only marine ecosystems but also profoundly impacting terrestrial ecosystems. Although scientists generally agree...

Ridgeward Flow of Compositionally Heterogeneous Mantle Produces Near-Ridge Seamount Chains in the South Pacific

Earth Sciences, Geochemistry, Marine Science, Geology,
mantle flow   seamount chains   South Pacific   mantle heterogeneity   decompression melting   ocean ridge   geochemistry  

Study on the Origin of Near-Ridge Seamount Chains in the South Pacific Academic Background Seamount chains in the ocean have long been considered products of mantle plume activity, such as the famous Hawaiian-Emperor seamount chain. However, most seamounts in the Pacific Ocean do not exhibit age progression and are relatively small in volume, sugge...

Hidden Deep Sulfide Cumulates Beneath the Jinchuan Ni–Cu–Platinum-Group Element Deposit (China) Inferred from Ni–Cu Isotopes

Earth Sciences, Geochemistry, Geology, Engineering, Mining and Metallurgical Engineering,
Ni–Cu isotopes   Jinchuan deposit   sulfide cumulates   platinum-group elements   magmatic differentiation   deep mineralization   geochemistry  

Discovery of Deep Sulfide Cumulates Beneath the Jinchuan Ni-Cu-Platinum Group Element Deposit and Its Significance Background Introduction Nickel (Ni), copper (Cu), and platinum group elements (PGE) are critical metal resources on Earth, widely used in industries, electronics, and new energy sectors. Approximately 56% of the world’s nickel, 3% of c...