An ancient impact site in a remote corner of northern Australia was recently spotted by Earth-observing satellites monitoring our planet’s resources.
The images, captured in early February by the Operational Land Imager (OLI) on Landsat 8, revealed the Land Down Under’s Amelia Creek impact structure, a one-by-five-kilometer canoe-shaped feature where an ancient collision with a space object deformed the region’s rock strata.
The massive asteroid that created the feature, believed to be as much as 1300 feet across, is recognizable after the passing of 600 million years by structural folds still visible in the surrounding sedimentary and volcanic rock layers.
Tracing an Impact to Its Ediacaran Roots
The event occurred during the Ediacaran Period, which borrows its name from South Australia’s Ediacara Hills. This crucial period in Earth’s early history saw the rise of the first large soft-bodied complex organisms, whose fossil remains represent the earliest evidence of the evolution of multicellular animals, or metazoans, known to scientists.
Although these inhabitants of the ancient Earth would come along later in the 96-million-year period comprising the Ediacara, as Earth emerged from the preceding Cryogenian Period, where the planet was blanketed in ice, most of the surface world was void of any life.
The same cannot be said of the…more
Source thedebrief.org
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