Comparison of Australasian tektites with Australasian microtektites and BeLaU spherules recovered from the ocean
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| Main Authors: | , , , , , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866915584842661888 |
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| author | Hyung, Eugenia Levy, Emma Cook, Loralei Jacobsen, Stein B. Loeb, Abraham Squire, Jayden Farkas, Juraj |
| author_facet | Hyung, Eugenia Levy, Emma Cook, Loralei Jacobsen, Stein B. Loeb, Abraham Squire, Jayden Farkas, Juraj |
| contents | The Australasian strewn field covers more than 15% of Earth's surface, consisting of tektites and microtektites. Australasian tektites from Southeast Asia and Australia, as well as microtektites recovered from deep sea sediments and Antarctica, are established to be derived from upper continental crust sediments. An expedition to retrieve remnants of bolide CNEOS 2014 January 8 (IM1), held in the Pacific Ocean, was in proximity to the known extent of the Australasian strewn field, and yielded "BeLaU"-spherules, whose compositions did not match most well-studied solar system material. We therefore report precise and comprehensive elemental data for Australasian tektites to compare their elemental abundances to those of microtektites from deep sea sediments, and BeLaU. Our findings corroborate previous studies that Australasian tektites and microtektites closely resemble the elemental abundance patterns of the upper continental crust. Meanwhile, the elemental patterns of the BeLaU-spherules are distinct from the Australasian tektite/microtektite compositions. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2510_24743 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Comparison of Australasian tektites with Australasian microtektites and BeLaU spherules recovered from the ocean Hyung, Eugenia Levy, Emma Cook, Loralei Jacobsen, Stein B. Loeb, Abraham Squire, Jayden Farkas, Juraj Geophysics Earth and Planetary Astrophysics The Australasian strewn field covers more than 15% of Earth's surface, consisting of tektites and microtektites. Australasian tektites from Southeast Asia and Australia, as well as microtektites recovered from deep sea sediments and Antarctica, are established to be derived from upper continental crust sediments. An expedition to retrieve remnants of bolide CNEOS 2014 January 8 (IM1), held in the Pacific Ocean, was in proximity to the known extent of the Australasian strewn field, and yielded "BeLaU"-spherules, whose compositions did not match most well-studied solar system material. We therefore report precise and comprehensive elemental data for Australasian tektites to compare their elemental abundances to those of microtektites from deep sea sediments, and BeLaU. Our findings corroborate previous studies that Australasian tektites and microtektites closely resemble the elemental abundance patterns of the upper continental crust. Meanwhile, the elemental patterns of the BeLaU-spherules are distinct from the Australasian tektite/microtektite compositions. |
| title | Comparison of Australasian tektites with Australasian microtektites and BeLaU spherules recovered from the ocean |
| topic | Geophysics Earth and Planetary Astrophysics |
| url | https://arxiv.org/abs/2510.24743 |