Pulse of Intense Oxidative Weathering During the Latest Paleoproterozoic

Earth Sciences, Geochemistry, Geology, Geochemistry,
oxidative weathering   Paleoproterozoic   black shales   copper isotopes   atmospheric oxygen   Columbia supercontinent   oceanic anoxia  

Research Report on the Pulse of Intense Oxidative Weathering During the Latest Paleoproterozoic Academic Background The level of atmospheric oxygen on Earth has a profound impact on the ecology and biogeochemical functioning of marine ecosystems. The Great Oxidation Event (GOE), which occurred approximately 2.5 to 2.2 billion years ago, marked a si...

Phanerozoic Emergence of Global Continental Collision and Onset of Massive Crustal Eclogitization

Earth Sciences, Geochemistry, Geology,
Phanerozoic   continental collision   eclogitization   crustal evolution   plate tectonics  

The Emergence of Global Continental Collision and the Onset of Massive Crustal Eclogitization Academic Background The evolution of Earth’s crust is closely related to the development of plate tectonics, particularly the compositional changes in continental crust, which provide key evidence for understanding the evolution of plate tectonics. However...

Sediment Supply Variation Control on Lower Eocene Delta Sequences (Tremp Basin, Spain)

Earth Sciences, Geochemistry, Geology,
sediment supply   Eocene   delta sequences   Tremp Basin   climate change   carbon isotopes   stratigraphy  

Control of Sediment Supply Variations on Lower Eocene Delta Sequences Academic Background In geological research, the formation of depositional sequences is often attributed to changes in accommodation space, while variations in sediment supply are frequently overlooked. However, changes in sediment supply may play a significant role in the formati...

Intensified Continental Weathering and Reductive Surface Runoff During the Triassic–Jurassic Transition

Earth Sciences, Geochemistry, Geology, Geochemistry,
Triassic-Jurassic transition   continental weathering   reductive runoff   iron isotopes   zinc isotopes   chemical index of alteration   biochar  

Study on Continental Weathering and Reductive Surface Runoff During the Triassic-Jurassic Transition Academic Background The Triassic-Jurassic Transition (TJT) marks one of the most significant mass extinction events in Earth’s history, known as the End-Triassic Extinction (ETE). This event led to a widespread decline in biodiversity across both ma...

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...