The Rock Elm Disturbance is an impact crater in Wisconsin, United States, roughly 40 kilometers Southwest of Menomonie. The disturbance is named for Rock Elm, Wisconsin, a nearby community.
The meteorite is estimated to have been 170 meters in diameter with a mass of 9x109 kg and impact velocity of 30 km/second. The crater is 6 km in diameter, and fossils found in the rock filling the crater suggest it dates to the middle Ordovician Period, about 455 to 430 million years ago.
Famous quotes containing the words rock, elm and/or disturbance:
“Never before has a generation of parents faced such awesome competition with the mass media for their children’s attention. While parents tout the virtues of premarital virginity, drug-free living, nonviolent resolution of social conflict, or character over physical appearance, their values are daily challenged by television soaps, rock music lyrics, tabloid headlines, and movie scenes extolling the importance of physical appearance and conformity.”
—Marianne E. Neifert (20th century)
“I want to celebrate these elms which have been spared by the plague, these survivors of a once flourishing tribe commemorated by all the Elm Streets in America. But to celebrate them is to be silent about the people who sit and sleep underneath them, the homeless poor who are hauled away by the city like trash, except it has no place to dump them. To speak of one thing is to suppress another.”
—Lisel Mueller (b. 1924)
“...though one can be callous in Ireland one cannot be wholly opaque or material. An unearthly disturbance works in the spirit; reason can never reconcile one to life; nothing allays the wants one cannot explain.”
—Elizabeth Bowen (1899–1973)