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
are small, millimetre-sized rock globules that formed in the solar nebula 4.5 billion years ago and are considered to be the basic building blocks of planet formation.
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 unique and authentic celestial heritage.