Pierwszy tektyt z Wysp Andamańskich (Wyspa Havelock)

• Authors: Krzysztof Szopa , Andrzej Kotowiecki

Title variants

EN

The first tektite from Havelock Island in India

• Languages of publication: PL

Abstracts

EN

A tektite is a rare natural glass that forms when an extra-terrestrial body struck the Earth. Tektites can be found in at least five widely separated locations on Earth, which are called strewn fields. There are four known strewn fields: the 35.5 Ma North American strewn field (linked to the Chesapeake crater, North America), the 14.4 Ma Central European strewn field (linked to the Ries crater in Germany), the Ivory Coast strewn field of unknown age (linked to the Bosumtwi crater in Ghana, West Africa), and the 0.8 Ma Australasian strewn field (source crater still unknown, although a large crater in Western Cambodia, Lake Tonle Sap, has been proposed). The last strewn field is known for the distribution of the biggest tektite group (i.e., philippinites, billitonites, javanites, indochinites). A tektite on Havelock Island in India, has also been recently identified. This is the first tektite reported from the Andaman and Nicobar islands. This tektite is composed of indochinite, having a typical dark colour and diagnostic chemical composition. Morphologically, a lack of cracks and abraded edges, both indicate short transport and rapid shallow burial.

Keywords

EN

Andaman; Havelock Island; Nicobar; strewn field; tektites

Discipline

• GEOLOGY: GEOLOGY

• Publisher: Polskie Towarzystwo Meteorytowe
• Journal: Acta Societatis Metheoriticae Polonorum
• Year: 2021
• Volume: 12
• Pages: 92-97

Dates

published

2021

Contributors

author

Krzysztof Szopa

• Instytut Nauk o Ziemi, Wydział Nauk Przyrodniczych, Uniwersytet Śląski w Katowicach

author

Andrzej Kotowiecki

• Wadowice

References

• Bandopadhyay P.C., 2012, Re-interpretation of the age and environment of deposition of Paleogene turbidites in the Andaman and Nicobar Islands, Western Sunda Arc, Journal of Asian Earth Sciences, 45, s. 126–137.
• Beran A., Koeberl C., 1997, Water in tektites and impact glasses by fourier-transformed infrared spectrometry, Meteoritics, 32, s. 211–216.
• Koeberl C., 1986, Geochemistry of tektites and impact glasses, Annular Review of Earth and Planetary Sciences, 14, s. 323–350.
• Koeberl C., Kluger F., Kiesl W., 1984, Geochemistry of Muong Nong Tektites V: Unusual Ferric/Ferrous Ratios, Meteoritics, 19, s. 253–254.
• Szopa K., Brachaniec T., Karwowski Ł., 2017, Polish moldavites – the current state of knowledge and perspectives of new finds, Przegląd Geologiczny, 67, s. 662–667.

• Document Type: article