The economics behind having shows is interesting. Costs can be significant. Sediment from 30°19.9’ north 157°49.4’ west 3100 to 3115 meters deep, said to contain asteroid particles. From ship LongLines cruise 44, October 1976, Leg #1. I have this material because I made a gift to honor the studies of muds, and to memorialize Charley Hollister. I was given this material for a piece I made and donated to the Woods Hole Oceanographic Institution. Iridium, a very rare element in the Earth's crust, is found in anomalously high concentrations in a thin geological soil layer called the Cretaceous-Tertiary boundary (often abbreviated the K-T boundary) world wide. Iridium is known to be abundant in asteroids and comet bodies, and is generally taken as evidence of a large impact about 65 million years ago, which spread Iridium-rich dust around the world. Google "iridium anomoly" for more information about this material, taken from the first core sample known to contain it. |