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
Interracial attraction 1950s, a 2013 study found 87% of Americans approve of interracial marriage, compared to just 4% in 1958. The same study concluded that 96% of blacks approved, and 84% of whites. Approval is highest among 18-to 29-year-olds, at 96%, and lowest among those 65 years and older, at 70%. Researchers have found social influence to be a factor in deciding partners. Interracial attraction Interracial attraction is the attraction to individuals of a different race. The biggest determinants of interracial attraction is the location of which individuals live. The United States is frequently referred to as a melting pot, owing to