<abstract xml:lang="en" xmlns="http://www.w3.org/1999/xhtml"><p>In the Outer Carpathians in Barnasiówka radiolarian shale formation, there is an intercalation underlied by bentonite. There were found very rare elements and minerals in this intercalation. It was recognized that this horizon has been filled with products of a big object collision with Earth. The age of the manganese-iron intercalation was determined by potassium-argon (K-Ar) dating of illites to be (89.3±1.2) Ma. Similar age, (85.2±0.6) Ma, was found for the post-impact glass from the Boltysh crater in Ukraine. It was concluded that the formation of this intercalation was synchronous with the Boltysh crater formation at the Cenomanian/Turonian boundary. The research for the K-Ar age of the crater creation in Logoisk (Belarus) established its formation to (124.2±1.2) Ma ago.</p></abstract>

In the Outer Carpathians in Barnasiówka radiolarian shale formation, there is an intercalation underlied by bentonite. There were found very rare elements and minerals in this intercalation. It was recognized that this horizon has been filled with products of a big object collision with Earth. The age of the manganese-iron intercalation was determined by potassium-argon (K-Ar) dating of illites to be (89.3±1.2) Ma. Similar age, (85.2±0.6) Ma, was found for the post-impact glass from the Boltysh crater in Ukraine. It was concluded that the formation of this intercalation was synchronous with the Boltysh crater formation at the Cenomanian/Turonian boundary. The research for the K-Ar age of the crater creation in Logoisk (Belarus) established its formation to (124.2±1.2) Ma ago.

New Data on the Post-Impact Material in Radiolarian Horizons in Outer Flysh Carpathians and Search for a Source Crater

Polish Geological Institute, Carpathian Branch, Skrzatów 1, 31-560 Kraków

Institute of Physics, Maria Curie-Sklodowska University, Plac Marii Curie-Skłodowskiej 1, 20-031 Lublin, Poland

Geochronometria

In the Outer Carpathians in Barnasiówka radiolarian shale formation, there is an intercalation underlied by bentonite. There were found very rare elements and...

New Data on the Post-Impact Material in Radiolarian Horizons in Outer Flysh Carpathians and Search for a Source Crater

Published Online: Jul 04, 2007

Page range: 17 - 22

DOI: https://doi.org/10.2478/v10003-007-0017-y

Keywords
Cenomanian/Turonian boundary, impact, crater, illite, K-Ar dating, Outer Carpathians

This content is open access.

New Data on the Post-Impact Material in Radiolarian Horizons in Outer Flysh Carpathians and Search for a Source Crater

Published Online: Jul 04, 2007

Page range: 17 - 22

DOI: https://doi.org/10.2478/v10003-007-0017-y

KeywordsCenomanian/Turonian boundary, impact, crater, illite, K-Ar dating, Outer Carpathians

This content is open access.

Keywords
Cenomanian/Turonian boundary, impact, crater, illite, K-Ar dating, Outer Carpathians