Found this interesting topic on the ATS thread NASA Finds Perfectly Rectangular Iceberg In Antarctica As If It Was Deliberately Cut. It’s a story the OP found at Forbes in a post of nearly the same name, by Trevor Nace,
Contributor in Science.
NASA just shared a stunning image of a nearly perfect rectangular iceberg in Antarctica. The monolithic slab of ice, floating just off the Larsen C ice shelf appears quite unnatural given the 90-degree angles. NASA took the image as part of Operation IceBridge, a mission to image Earth’s polar regions in order to understand how ice (thickness, location, accumulation, etc.) has been changing in recent years. While the iceberg is quite strange to look at, it is an entirely natural phenomenon. Most of us are used to seeing pictures of angular icebergs with just a small tip jutting out of the water. However, there is an entirely different type of iceberg called tabular icebergs. Tabular icebergs have steep, nearly vertical sides and a flat plateau top. Tabular icebergs typically break off of ice shelves, which are tabular bodies of thick ice. When there is a clean calve of the iceberg, the angles can be close to 90 degrees. In this case, the iceberg is likely not very old as wind, waves and sea spray will eventually winnow away the sharp edges of this iceberg and round it out, Kelly Brunt, a NASA scientist, told Live Science.
Nifty keen, kids! These images are so strange … and quite beautiful.
Mother Nature is one stunning lady.
And here, just for fun, is a triangular iceberg. : )