The Largest Impact Crater on the Planet; Hidden in Australia, The Deniliquin Structure

The largest impact crater on the planet is not located in Mexico, but rather within Australia. The crater in question is known as the Deniliquin Structure, whose southern rim even includes a portion of the city of Melbourne. In total, this massive feature measures Crater and measures 520 kilometers or 323 miles wide. It formed as the result of a catastrophic impact between 417 and 525 million years ago. This video will discuss this massive impact crater and the evidence that it exists.

Thumbnail Photo Credit: Google Earth, Data SIO, NOAA, U.S. Navy, NGA. GEBCO, Image Landsat / Copernicus. This image was then overlaid with text, overlaid with an orange dotted circular outline of the buried impact structure, before being finally overlaid with GeologyHub made graphics (the GeologyHub logo and the image border).

Estimates on asteroid diameter, velocity, and tnt energy equivalent in this video were sourced using the calculator at https://impact.ese.ic.ac.uk/ImpactEar..., which was used with permission.

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Google Earth imagery used in this video: ©Google & Data Providers

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Sources/Citations:
[1] A.Y. Glikson, A.N. Yeates, Geophysics and origin of the Deniliquin multiple-ring feature, Southeast Australia, Tectonophysics, Volume 837, 2022, 229454, ISSN 0040-1951, https://doi.org/10.1016/j.tecto.2022..... (https://www.sciencedirect.com/science...)
[2] Ebbing, J., Dilixiati, Y., Haas, P. et al. East Antarctica magnetically linked to its ancient neighbours in Gondwana. Sci Rep 11, 5513 (2021). https://doi.org/10.1038/s41598-021-84..., CC BY 4.0
[3] Kiik, K.; Plado, J.; Lingadevaru, M.; Jeelani, S.H.; Szyszka, M. Magnetic Anomaly and Model of the Lonar Meteorite Impact Crater in Maharashtra, India. Geosciences 2020, 10, 417. https://doi.org/10.3390/geosciences10..., CC BY 4.0

0:00 A Newly Discovered Impact Crater
0:17 Magnetic Data
2:27 Complex Impact Crater
3:20 When the Impact Occurred
3:48 Iridium Spike
4:40 Conclusion