Publicaties
Gekozen filters:
Gekozen filters:
Isotopic evolution of planetary crusts by hypervelocity impacts evidenced by Fe in microtektites Vrije Universiteit Brussel
Fractionation effects related to evaporation and condensation had a major impact on the current elemental and isotopic composition of the Solar System. Although isotopic fractionation of moderately volatile elements has been observed in tektites due to impact heating, the exact nature of the processes taking place during hypervelocity impacts remains poorly understood. By studying Fe in microtektites, here we show that impact events do not ...
CAUGHT IN AMBER: GEOCHEMISTRY AND PETROGRAPHY OF UNIQUELY PRESERVED CHICXULUB MICROTEKTITES FROM THE TANIS K-PG SITE FROM NORTH-DAKOTA (USA) Vrije Universiteit Brussel
Introduction: The Chicxulub meteorite impact is
the only recognized impact event on Earth that produced
and preserved an ejecta layer still traceable today on a
global scale [1]. Therefore, it is possible to directly compare,
both texturally and compositionally, the material
from the crater in Mexico with its deposits worldwide.
This approach provides vital constraints on the dynamic
processes ...
the only recognized impact event on Earth that produced
and preserved an ejecta layer still traceable today on a
global scale [1]. Therefore, it is possible to directly compare,
both texturally and compositionally, the material
from the crater in Mexico with its deposits worldwide.
This approach provides vital constraints on the dynamic
processes ...
High spatial resolution geochemistry and textural characteristics of ‘microtektite’ glass spherules in proximal Cretaceous–Paleogene sections: Insights into glass alteration patterns and precursor melt lithologies. Vrije Universiteit Brussel Universiteit Gent KU Leuven
Using laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS), we have conducted spatially resolved trace element analysis on fresh, unaltered microtektite glasses linked to the Cretaceous–Paleogene (K–Pg) boundary Chicxulub crater and on their surrounding alteration phases. This unique approach offers the opportunity to study in situ and at high spatial resolution both the mixing of different target lithologies and the variation ...
High spatial resolution geochemistry and textural characteristics of ‘microtektite’ glass spherules in proximal Cretaceous–Paleogene sections: Insights into glass alteration patterns and precursor melt lithologies Vrije Universiteit Brussel
Using laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS), we have conducted spatially resolved trace element analysis on fresh, unaltered microtektite glasses linked to the Cretaceous–Paleogene (K–Pg) boundary Chicxulub crater and on their surrounding alteration phases. This unique approach offers the opportunity to study in situ and at high spatial resolution both the mixing of different target lithologies and the variation ...
Petrography and geochemistry of distal spherules from the K–Pg boundary in the Umbria–Marche region (Italy) and their origin as fractional condensates and melts in the Chicxulub impact plume Vrije Universiteit Brussel Universiteit Gent KU Leuven
Abstract The impact spherules from the distal K–Pg boundary sections are considered to represent silicate droplets condensed and solidified from a laterally expanding, cooling vapor plume formed upon hypervelocity impact. In the present-day Cretaceous–Paleogene boundary (K–Pg) spherule population of the Umbria–Marche region in Italy, three texturally and compositionally distinct types of impact spherules can be identified that are dominantly ...
On the nature of the Ni-rich component in splash-form Australasian tektites Vrije Universiteit Brussel
The Australasian tektite strewn field is exceptional, not only as the largest and most recent, but also as the only strewn field without an identified source impact crater. Therefore, scenarios without the formation of an impact crater, such as a low altitude cometary airburst, have proven hard to discard. Here, new geochemical evidence is presented for mixing of projectile and target material, which implies the formation of an Australasian ...