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Title

POL
ENG

Klast stopu impaktowego w brekcji pułtuskiej

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Affiliations

  1. Department of Earth Sciences Natural History Museum; Instytut Nauk Geologicznych Polskiej Akademii Nauk

Abstract

The Pułtusk H chondritic breccia records a complex impact history and contains various products of impact metamorphism. Here, impact melt lithology is described, which is embedded into the Pułtusk breccia. The impact melt clast is formed by microcrystalline quenched silicates and metal-troilite globules and chondritic relicts are retained in the melt. The relicts record strong shock deformation, S4–S5 and they have well developed foliated fabric of metal grains. The melt formed by severe collision and impact melting on the parent body. The chondritic material was superheated and molten. Silicate melt unmixed from the metal-sulphide melt and both were rapidly quenched. Most likely the event occurred during Late Heavy Bombardment, ~3.6 Ga.

Keywords

ENG
H chondrites, Late Heavy Bombardment, Pułtusk, impact melt

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Acta Societatis Metheoriticae Polonorum
2018/9
Export to PBN, Opens in new tab
Pages:
74-91
Main language of publication
Polish
Published
2018

Peer-reviewed publication

Exact and natural sciences