Relict spinel grains (~ 25–250μm in diameter) from decomposed extraterrestrial material in
Archean to Recent sediments can be used to reconstruct variations in the flux of different …

The breakup of the L-chondrite parent body in the asteroid belt 466 million years (Ma) ago
still delivers almost a third of all meteorites falling on Earth. Our new extraterrestrial chromite …

The catastrophic disruption of the L chondrite parent body in the asteroid belt c. 470 Ma
initiated a prolonged meteorite bombardment of Earth that started in the Ordovician and …

Most meteorites that fall today are H and L type ordinary chondrites, yet the main belt
asteroids best positioned to deliver meteorites are LL chondrites,. This suggests that the …

The breakup of the L-chondrite parent body (LCPB) in the mid-Ordovician is the largest
documented asteroid breakup event during the past 3 Gyr. It affected Earth by a dramatic …

Abstract The two Clearwater Lake impact structures (Québec, Canada) are generally
interpreted as a crater doublet formed by the impact of a binary asteroid. Here, arguments …

Hollow magnetic microspherules from along the lower Younger Dryas boundary (c. 12.9 ka
bp) in New Mexico (USA) were studied using scanning electron microscopy, electron probe …

Approximately 470 million years ago one of the largest cosmic catastrophes occurred in our
solar system since the accretion of the planets. A 200-km large asteroid was disrupted by a …

A large abundance of L-chondritic material, mainly in the form of fossil meteorites and
chromite grains from micrometeorites, has been found in mid-Ordovician 470 Ma old …

We present the first reconstruction of the micrometeorite flux to Earth in the Silurian Period.
We searched 321 kg of condensed, marine limestone from the Late Silurian Cellon section …