Fenambosy Chevron

The Fenambosy Chevron is one of four chevron-shaped land features on the southwest coast of Madagascar, near the tip of Madagascar, 180 meters (590 ft) high and 5 kilometres (3.1 mi) inland. Chevrons such as Fenambosy have been hypothesized as providing evidence of "megatsunamis" caused by comets or asteroids crashing into Earth,[1] although has been challenged by other geologists and oceanographers.[2][3]

The Burckle crater about 1,700 kilometres (1,100 mi) east-southeast of the Madagascar chevrons is hypothesized to be an asteroid impact crater that caused the megatsunami about 4,500 to 5,000 years ago.[1]

References

  1. ^ a b Scheffers, A., Kelletat, D., Scheffers, S. R., Abbott, D. H., and Bryant, E. A., 2008, Chevrons – enigmatic sedimentary coastal features, Zeitschrift für Geomorphologie, v. 52, no. 3, pp. 375-402.
  2. ^ Bourgeois, J. and Weiss, R., 2009, "Chevrons" are not mega-tsunami deposits--A sedimentologic assessment, Geology, v. 37, pp. 403–406.
  3. ^ Pinter, N., and Ishman, S. E., 2008, Impacts, mega-tsunami, and other extraordinary claims, GSA Today. Archived 2014-10-17 at the Wayback Machine v. 18, no. 1, pp. 37–38.

25°01′00″S 44°10′38″E / 25.016707°S 44.177118°E / -25.016707; 44.177118

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