Allison Guyot is an undersea volcanic mountain with a flat top in the Mid-Pacific Mountains. West of Hawaii and northeast of the Marshall Islands, it rises 1,500 metres (4,900 ft) above the seafloor to a platform 35 by 70 kilometres (22 mi × 43 mi) wide. It was probably formed by a hotspot before plate tectonics moved it north to its present-day location. Radiometric dating puts the formation of a volcanic island at around 111 to 85 million years ago. The island was eventually buried, forming an atoll-like structure and a carbonate platform. The platform emerged above sea level at some time in the Albian or Turonian ages before eventually drowning about 99 million years ago for unknown reasons; it is possible that the emergence damaged its reefs. After a hiatus lasting until the Paleocene, pelagic sedimentation deposited limestone, ooze and sand, which bear traces of climatic events and ocean currents.

Read more: https://en.wikipedia.org/wiki/Allison_Guyot

_______________________________ Today's selected anniversaries:

1807:

The Froberg mutiny at Fort Ricasoli in Malta came to a close when the rebels blew up 600 barrels of gunpowder and escaped, although they were later caught and executed. https://en.wikipedia.org/wiki/Froberg_mutiny

1831:

Broughton Suspension Bridge in Manchester, England, collapsed, reportedly because of mechanical resonance induced by troops marching in step over the bridge. https://en.wikipedia.org/wiki/Broughton_Suspension_Bridge

1910:

SMS Zrínyi, one of the last pre-dreadnoughts built by the Austro-Hungarian Navy, was launched. https://en.wikipedia.org/wiki/SMS_Zr%C3%ADnyi

1980:

Terry Fox, an athlete with an artificial leg, began running his "Marathon of Hope" from St. John's, Newfoundland and Labrador, intending to reach Vancouver, to raise funds for cancer research. https://en.wikipedia.org/wiki/Terry_Fox

_____________________________ Wiktionary's word of the day:

spraddle: 1. (transitive, Canada, Caribbean (West Indies), US) To spread apart (the legs). 2. (transitive, Canada, Caribbean (West Indies), US) To spread apart the legs of (someone or something). 3. (intransitive, Canada, Caribbean (West Indies), US) To lie, move, or stand with legs spread. https://en.wiktionary.org/wiki/spraddle

___________________________ Wikiquote quote of the day:

I honestly beleave it iz better tew know nothing than two know what ain't so.   --Josh Billings https://en.wikiquote.org/wiki/Josh_Billings