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Dinosaur Extinction

All articles tagged with #dinosaur extinction

science2 months ago

New Research Challenges Dinosaur Extinction Theories and Reveals Hidden Oceanic Asteroid Crater

Scientists have confirmed the existence of the Nadir Crater, a 9 km wide impact crater beneath the Atlantic Ocean floor, formed 66 million years ago by an asteroid likely responsible for the extinction of the dinosaurs. Using advanced seismic imaging, they reconstructed the impact's aftermath, including tsunamis and liquefied sediments, and plan to drill cores to further study this well-preserved site, offering new insights into asteroid impacts and mass extinctions.

via The Daily Galaxy|
#asteroid-impact#dinosaur-extinction#nadir-crater
science2 years ago

"Dinosaur Extinction: Unveiling the Volcanic Climate Connection"

Recent research challenges the belief that a meteorite was the sole cause of dinosaur extinction, suggesting that volcanic eruptions and resulting global cooling played a significant role. A study conducted by McGill University researchers explores the link between volcanic activity and climate change, focusing on the massive eruptions of the Deccan Traps in Western India. The study suggests that the release of sulfur during these eruptions could have triggered a global drop in temperature, leading to repeated volcanic winters that made life difficult for plants and animals, ultimately setting the stage for the dinosaur extinction event. The findings shed light on Earth's ancient secrets and contribute to a better understanding of our own changing climate.

via SciTechDaily|
#climate-change#deccan-traps#dinosaur-extinction
science2 years ago

Unraveling the Mystery: AI Settles Debate on Dinosaur Extinction

Dartmouth scientists have used an innovative computer model to suggest that volcanic activity, rather than an asteroid impact, was the primary cause of the mass extinction that ended the age of the dinosaurs. By analyzing the fossil record in reverse, the model identified the events and conditions that led to the extinction event. The researchers found that the emissions from the Deccan Traps volcanic eruptions alone could have triggered the global extinction. The model also revealed a decrease in organic carbon accumulation in the deep ocean around the time of the asteroid impact, suggesting the demise of numerous species. This groundbreaking approach opens new avenues for investigating other geological events.

via SciTechDaily|
#asteroid#computer-model#dinosaur-extinction
science2 years ago

"Dust: The Silent Killer of the Dinosaurs"

A new study on the end-Cretaceous extinction event suggests that fine dust from the Chicxulub impact played a significant role in the demise of non-avian dinosaurs. The study found that when this dust is plugged into climate models, global temperatures drop by as much as 25°C, and photosynthesis shuts down for almost two years. The researchers also discovered that the average particle size of the dust was smaller than previously assumed, affecting its interaction with sunlight and how long it stays in the atmosphere. These findings highlight the complex dynamics of the post-impact climate and the challenges in understanding the events that followed the extinction event.

via Ars Technica|
#chicxulub-impact#climate-modeling#dinosaur-extinction