Tracing impact events in clay samples with iridium anomaly at and above the Cretaceous/Paleogene boundary at Byala, Eastern Bulgaria
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Published:2022-11-22
Issue:3
Volume:51
Page:3-16
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ISSN:0324-0894
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Container-title:Geologica Balcanica
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language:
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Short-container-title:GeolBalc
Author:
Kostov Ruslan, , Protohristov Hristo, Marinova Savka, Hristozova GerganaORCID, Kostov Latchesar, Tringovska IvankaORCID, Zinicovscaia IngaORCID, Vergel KonstantinORCID, Grozdov DmitriiORCID, Pavlov Sergey, Strelkova Lyudmila, , , , , , , , , , , ,
Abstract
Elemental composition of two groups of 12 clay samples, at and above the Cretaceous/Paleogene (K/Pg) boundary at Byala (Black Sea shore, Eastern Bulgaria), is studied by Neutron Activation Analysis (NAA) in order to trace impact events. Iridium anomaly and a certain set of trace elements, together with biostratigraphic data, point to two possible impact events recorded: the first one (at the K/Pg boundary), linked to the giant Chicxulub impact in Mexico; and a second one (above the K/Pg boundary), possibly linked to the later in age, smaller and closer in distance, Boltysh impact in Ukraine.
Publisher
Geological Institute, Bulgarian Academy of Sciences
Subject
General Earth and Planetary Sciences
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