All articles tagged with #earths history
Marine fossils found at the summit of Mount Everest are explained by plate tectonics, which caused oceanic crust containing these fossils to be uplifted during the collision of the Indian and Eurasian plates, forming the Himalayas over millions of years.
Scientists from COLDEX have discovered 6-million-year-old ice in Antarctica's Allan Hills, providing rare direct evidence of past atmospheric conditions and temperature changes, including a regional cooling of about 12°C over the past six million years, offering valuable insights into Earth's climate history.
Scientists have found the first direct evidence of the proto-Earth, the original Earth before the Moon-forming impact, by analyzing ancient rocks and meteorites for potassium-40 isotopic signatures. These findings suggest that some ancient Earth materials have survived billions of years, providing new insights into Earth's early composition and the materials that formed it.
Scientists have detected a chemical signature in ancient rocks that may be a remnant of proto-Earth, suggesting parts of Earth's original chemistry have persisted despite the planet's tumultuous history, challenging previous assumptions about Earth's complete chemical reset after the giant impact 4.5 billion years ago.
Scientists have confirmed that the Silverpit Crater in the North Sea was formed by a 40-million-year-old asteroid impact, using advanced seismic imaging and microscopic analysis of drill samples, resolving a long-standing debate about its origin.
A recent study reveals that Earth's geological transitions follow a hidden hierarchical, multifractal pattern, suggesting that the apparent chaos in Earth's history is structured and predictable over long timescales, with implications for understanding past and future planetary changes.
Recent studies revising the age and size of the Miralga impact crater in Australia suggest it is much younger (between 2.7 billion and 400 million years ago) and smaller (about 16 km in diameter) than previously thought, challenging earlier claims that it was 3.5 billion years old and over 100 km wide. This discovery provides valuable insights into Earth's early impact history and offers a unique site for planetary science research related to Mars.
Scientists have transported and are melting a 1.5 million-year-old ice core from Antarctica in the UK to study ancient climate data, which could provide vital insights into Earth's past climate patterns, sea levels, and the effects of greenhouse gases, helping to understand current and future climate change.
A recent study challenges previous claims about the age and size of the Miralga impact structure in Western Australia, suggesting it is younger (between 2.7 billion and 400 million years ago) and smaller (about 16 km in diameter) than initially thought, and highlighting the complexities in dating ancient impact events.
A new study reveals that Earth's biodiversity is influenced by a 60-million-year tectonic cycle, which affects geological activity, ocean chemistry, and climate, leading to periodic mass extinctions and shaping the evolution of life on Earth.
Scientists have revised the age and size of the Miralga impact crater in Western Australia, determining it formed between 2.7 billion and 400 million years ago and is about 16 km in diameter, challenging earlier claims that it was 3.5 billion years old and over 100 km wide. The discovery provides insights into Earth's early impact history and has implications for planetary science, including Mars exploration.
Scientists have discovered the largest known impact crater in the U.S., buried beneath Chesapeake Bay, formed by a massive asteroid collision around 35 million years ago, which caused widespread fires, earthquakes, and tsunamis, significantly shaping the region's landscape and contributing to Earth's geological history.
A study suggests rocks in Canada's Nuvvuagittuq Greenstone Belt may be the oldest on Earth, dating back 4.16 billion years, offering insights into Earth's early crust and the emergence of life.
Scientists have identified rocks in Canada's Nuvvuagittuq Greenstone Belt that are approximately 4.16 billion years old, potentially making them the oldest on Earth, providing valuable insights into Earth's early formation and history.
A 1-minute video illustrates the movement of Earth's tectonic plates over the past 1.8 billion years, highlighting the formation and breakup of supercontinents, the dynamic nature of Earth's crust, and potential future tectonic shifts such as the formation of new supercontinents and the splitting of Africa.