有些科学家不敢明确反对这个观点,似乎深怕会因为反对“核冬天”理论而被归为“核战争贩子”。 气象学家麦克·奥德(Mike Oard)的综述文章《恐龙的灭绝》【‘The extinction of the Dinosaurs’ (Journal of Creation11(2):137–154, 1997)】解释道,许多恐龙化石的特征都与洪水相关,恐龙的脚印符合恐龙正在洪水中...
suggested that the iridium came from the impact of a meteor about 6 miles (10 kilometers) across. He argued that such an impact would have caused an enormous explosion, sending huge clouds of dust into the atmosphere. The dust, blocking out the sun and causing acid rain for years, would...
The thin layer of the element present in the earth’s crust is a result of a large meteor with a high percentage of Ir that had hit the earth at the end of Cretaceous period[1] Iridium Price The cost of the pure metal is anywhere between $ and $ per gram. ...
When exposed to air, it reacts with oxygen to form a thin Layer of iridium dioxide (IrO 2 ). At high temperatures, the metal becomes more reactive. Then it reacts with oxygen and halogens to form iridium dioxide and iridium trihalides. For example: ...
IridiumAnomalies.One of the strongest evidences for impact is the enrichment of iridium (Ir) in a clay layer at the K/T boundary at many locations worldwide (Alvarez et al., 1990). The age of this clay layer has been measured at several places on the continents, and the average age is...
suggested that the iridium came from the impact of a meteor about 6 miles (10 kilometers) across. He argued that such an impact would have caused an enormous explosion, sending huge clouds of dust into the atmosphere. The dust, blocking out the sun and causing acid rain for years, would...
suggested that the iridium came from the impact of a meteor about 6 miles (10 kilometers) across. He argued that such an impact would have caused an enormous explosion, sending huge clouds of dust into the atmosphere. The dust, blocking out the sun and causing acid rain for years, would...