Massive Australian Precambrian/Cambrian Impact Structure Massive Australian Precambrian/Cambrian Impact Structure The Massive Australian Precambrian/Cambrian Impact Structure also known as MAPCIS is a proposed impact structure based upon arguments presented by Daniel P. Connelly at Geological Society of America meetings. Its center is located approximately equidistant between Uluru (Ayers Rock) and Mount Conner in Australia's Northern Territory. The structure is approximately in diameter. However, a hypothetical outermost ring in diameter is claimed to be the result of undefined far field stresses. Connelly argues that the age of this hypothetical impact is approximately 545 mya which puts it just before the Cambrian explosion (542 mya) of the
Paronymic attraction Paronymic attraction In etymology, including onomastics, paronymic attraction is the distorting effect exerted on a word by one of its paronyms (that is, a quasi-homonym). Paronymic attraction is the origin of many names. The attraction can even be cross-linguistic: the resemblance between the Romanian language word "locaţie" (a space for which a rent should be paid) and the English word "location" helped a semantic shift of the former word to include the latter sense. A common phenomenon, paronymic attraction is usually expressed through the replacement of a word whose meaning is not understood by a term designating a name (common