New Suspect in Dinosaur Extinction: Deccan Traps

The asteroid impact theory has long been the primary explanation for the mass extinction that wiped out the dinosaurs, a simple and convincing narrative involving an Everest-sized asteroid devastating the planet.

However, new evidence points to a second, more gradual, and geological suspect: a vast volcanic region known as the Deccan Traps in India, which began erupting well before the extraterrestrial impact, suggesting a more complex extinction event.

Sixty-six million years ago, Earth was in the final days of the Cretaceous period, a time characterized by high heat and humidity, making the planet barely recognizable compared to today.

Dinosaurs, which had successfully dominated Earth for over 150 million years, were part of robust ecosystems capable of surviving extreme conditions like polar nights before their sudden disappearance.

This long period of volcanic activity significantly altered the atmosphere and environment, setting the stage for subsequent ecological stress.

Ocean temperatures rose by at least 2ºC in just 100,000 years, creating additional stress on marine life during the extended period of volcanic activity.

The planet experienced severe fluctuations between global warming and cooling periods, pushing ecosystems beyond their limits, while acid rain and ocean acidification severely damaged the marine food web by killing plankton.

The true apocalypse arrived as the Deccan Traps initiated a multi-thousand-year event, unleashing tens of trillions of tons of magma and deadly gases.

This period of heightened activity caused massive wildfires, earthquakes, tsunamis, and potentially hypercanes with wind speeds reaching nearly 1000 km/h, further devastating the global environment.

Hurricanes reached the stratosphere, depleting the ozone layer and exposing life to lethal solar radiation.

The volcanic activity released massive clouds of mercury and hydrochloric acid, leading to acid rain and collapsing food chains, which in turn caused the starvation and poisoning of remaining dinosaur populations.

The asteroid struck Earth with the force of 4 billion atomic bombs, a sudden catastrophic event that served as the ultimate impact on a world already weakened by volcanic activity.

While the Deccan Traps caused long-term environmental degradation, the asteroid delivered a decisive, immediate strike, after which the Deccan Traps continued to release toxic gases for another 800,000 years, ensuring the planet remained covered in poison.

Birds represent the only surviving descendants of the dinosaur family, the sole lineage that continued after the mass extinction.

Scientists continue to intensely debate whether the Deccan Traps alone could have caused the extinction or if the asteroid impact was an essential factor.

The reconstruction of evidence-based timelines for the Deccan Traps is still ongoing, and the lack of definitive evidence is a common challenge in ancient forensic studies of Earth's history.

Earth-based volcanism may be the primary driver of extinction events, as seen in the Permian collapse 250 million years ago when the Siberian Traps killed 95% of species.

For example, the Permian mass extinction 250 million years ago, which eliminated 95% of species, is linked to the Siberian Traps, indicating that Earth-based volcanism may be a primary driver of mass extinctions, rather than solely extraterrestrial impacts.

The fossil record shows a correlation between the intensity and duration of volcanic activity and the severity of species loss.

Despite past events, the 'monster' of volcanic activity responsible for mass extinctions is currently inactive and moves at an incredibly slow pace.

Modern monitoring technology would provide warnings of any such significant activity millions of years in advance, allowing ample time for preparation and mitigation.