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...

Late Triassic Continental Eclogite in the Central Tibetan Plateau Reveals 2500-km-long Paleo-Tethys Continental Subduction

Earth Sciences, Geochemistry, Geology,
Tibetan Plateau   Late Triassic   continental eclogite   Paleo-Tethys   continental subduction   plate tectonics   climate impact  

Late Triassic Continental Eclogite in the Central Tibetan Plateau Reveals Paleo-Tethys Continental Subduction Academic Background The Tibetan Plateau is one of the youngest and highest plateaus on Earth, and its formation is closely related to the closure of the Tethys Ocean and the collision of the Indian-Eurasian plates. The Paleo-Tethys Ocean wa...

Alkali-Carbonate Melts in the Cratonic Mantle Evidenced by a Wehrlite Xenolith from the Majuagaa Kimberlite, West Greenland

Earth Sciences, Geochemistry, Geology,
carbonate melts   cratonic mantle   wehrlite xenolith   mantle metasomatism   alkali-carbonates   kimberlite   mantle minerals  

Evidence of Alkali-Carbonate Melts in the Mantle Academic Background Carbonate melts play a crucial role in Earth’s deep carbon cycle, mantle melting, redox reactions, and the transport of highly incompatible elements. Although experimental studies, metasomatic transformations, and melt/fluid inclusions in mantle xenoliths, kimberlites, and diamond...