Search results
Results from the WOW.Com Content Network
The Weaubleau structure is a probable meteorite impact site in western Missouri near the towns of Gerster, Iconium, Osceola, and Vista. It is believed to have been caused by a 1,200-foot (370 m) meteoroid between 335 and 340 million years ago [ 1 ] during the middle Mississippian Period (Latest Osagean to Earliest Meramecian ).
The Allende meteorite is the largest carbonaceous chondrite ever found on Earth. The fireball was witnessed at 01:05 on February 8, 1969, falling over the Mexican state of Chihuahua . [ 1 ] After it broke up in the atmosphere , an extensive search for pieces was conducted and over 2 tonnes (2.2 tons) were recovered.
Allendeite was discovered in a small ultrarefractory inclusion within the Allende meteorite. [2] This inclusion has been named ACM-1. [2] It is one of several scandium rich minerals that have been found in meteorites. [2] Allendeite is trigonal, with a calculated density of 4.84 g/cm 3. [2] The new mineral was found along with hexamolybdenum. [2]
L-excesses from 3 – 15% in several non-protein α-dialkyl amino acids have been found in the Murchison and Murray meteorites. [25] Their extraterrestrial origin is indicated by their absence in biological systems and significant heavy isotope enrichments in 13 C and deuterium compared to terrestrial values. [ 26 ]
Hexamolybdenum was discovered in a small ultrarefractory inclusion within the Allende meteorite. [4] This inclusion has been named ACM-1. [4] Hexamolybdenum is hexagonal, with a calculated density of 11.90 g/cm 3. [4] The new mineral was found along with allendeite. [4] These minerals, are believed to demonstrate conditions during the early ...
A Bronze Age arrowhead unearthed in Switzerland was made from a meteorite, a new study has found. Skip to main content. 24/7 Help. For premium support please call: 800-290-4726 more ways to ...
As of 2016, only two of the structures, Crooked Creek (320 ± 80 Ma) and Decaturville (< 300 Ma), both in Missouri, are listed as confirmed impact craters in the Earth Impact Database. [3] There is evidence that at least some of the features, such as Hicks Dome in Illinois, are volcanic in origin. These features are associated with faults and ...
Chondrite meteorite with calcium–aluminium-rich inclusions seen as white specks. A calcium–aluminium-rich inclusion or Ca–Al-rich inclusion (CAI) is a submillimeter- to centimeter-sized light-colored calcium- and aluminium-rich inclusion found in carbonaceous chondrite meteorites.