Armytage et al., "A nebula setting as the origin for bulk chondrule
Fe isotope variations in CV chondrites," Earth and Planetary Science Letters, vol.
The TEDx talk covered a wide array of topics
Armytage et al., "A nebula setting as the origin for bulk chondrule
Fe isotope variations in CV chondrites," Earth and Planetary Science Letters, vol.
The TEDx talk covered a wide array of topics, including meteorite types and parent bodies, meteorite surface features, chondrule
formation, extinction events, asteroid mining, the influence of meteorites on spacecraft design, and more.
This is a "chondrule
," a small bead less than a millimeter across, a droplet of rock molten and frozen in zero gravity as the planets were being formed 4.5 billion years ago.
Showing that chondrules
are as old as CAIs addresses a long-standing question of why chondrule
formation should be delayed by up to 2 million years after CAIs.
Benton reveals a sequence of events that reflect a complex history: (1) chondrule
formation and initial assembly; (2) brecciation; (3) thermal metamorphism and (4) shock veining.
The team led by Ogliore analyzed a chondrule
fragment known from previous research to have formed by high-temperature processes in the inner solar nebula-the cloud of gas and dust surrounding the infant Sun from which the planets formed.
grains whose magnetic fields were mapped in the new study came from a meteorite named Semarkona, after the place in India where it fell in 1940.
This technique enabled the researchers to study the orientation and position of individual micrometre-sized grain particles that had coalesced around the chondrule
The X-rays from these large flare events are thought to affect the formation of 'chondrules
', flash-melted calcium-aluminium-rich grains in the star's protoplanetary disc.
and Kimura, M.: 2009, Tetrad effects in REE abundance patterns of chondrules
from CM meteorites: Implications for aqueous alteration on the CM parent asteroid.
(the silicate mineral grains found in meteorites) are clearly visible." Jean-Marie Schaller, Louis Moinet's CEO and creative director, says: "It's an honour to be paying tribute to Qatar by combining the art of watchmaking with this u