Extraterrestrial spinels and the astronomical perspective on Earth's geological record and evolution of life
B Schmitz - Geochemistry, 2013 - Elsevier
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 …
Archean to Recent sediments can be used to reconstruct variations in the flux of different …
An extraterrestrial trigger for the mid-Ordovician ice age: Dust from the breakup of the L-chondrite parent body
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 …
still delivers almost a third of all meteorites falling on Earth. Our new extraterrestrial chromite …
Refined Ordovician timescale reveals no link between asteroid breakup and biodiversification
A Lindskog, MM Costa, CMØ Rasmussen… - Nature …, 2017 - nature.com
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 …
initiated a prolonged meteorite bombardment of Earth that started in the Ordovician and …
Rare meteorites common in the Ordovician period
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 …
asteroids best positioned to deliver meteorites are LL chondrites,. This suggests that the …
Absolute dating of the L-chondrite parent body breakup with high-precision U–Pb zircon geochronology from Ordovician limestone
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 …
documented asteroid breakup event during the past 3 Gyr. It affected Earth by a dramatic …
New 40Ar/39Ar dating of the Clearwater Lake impact structures (Québec, Canada)–Not the binary asteroid impact it seems?
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 …
interpreted as a crater doublet formed by the impact of a binary asteroid. Here, arguments …
Unusual sources of fossil micrometeorites deduced from relict chromite in the small size fraction in~ 467 Ma old limestone
Extraterrestrial chrome spinel and chromite extracted from the sedimentary rock record are
relicts from coarse micrometeorites and rarely meteorites. They are studied to reconstruct the …
relicts from coarse micrometeorites and rarely meteorites. They are studied to reconstruct the …
Implications from chemical, structural and mineralogical studies of magnetic microspherules from around the lower Younger Dryas boundary (New Mexico, USA)
AV Andronikov, IE Andronikova, CW Loehn… - … Annaler: Series A …, 2016 - Taylor & Francis
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 …
bp) in New Mexico (USA) were studied using scanning electron microscopy, electron probe …
A search for H-chondritic chromite grains in sediments that formed immediately after the breakup of the L-chondrite parent body 470 Ma ago
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 …
chromite grains from micrometeorites, has been found in mid-Ordovician 470 Ma old …
The mid-Ordovician meteorite flux to Earth shortly before breakup of the L-chondrite parent body
SY Liao, B Schmitz - Icarus, 2023 - Elsevier
The breakup of the L-chondrite parent body (LCPB) in the asteroid belt at 466 Ma ago is the
largest asteroid breakup documented in Earth's geological record for the past ca. three …
largest asteroid breakup documented in Earth's geological record for the past ca. three …