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Very high-temperature impact melt products as evidence for cosmic airbursts and impacts 12,900 years ago

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F12%3A10133015" target="_blank" >RIV/00216208:11310/12:10133015 - isvavai.cz</a>

  • Alternative codes found

    RIV/67985831:_____/12:00378869

  • Result on the web

    <a href="http://dx.doi.org/10.1073/pnas.1204453109" target="_blank" >http://dx.doi.org/10.1073/pnas.1204453109</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.1073/pnas.1204453109" target="_blank" >10.1073/pnas.1204453109</a>

Alternative languages

  • Result language

    angličtina

  • Original language name

    Very high-temperature impact melt products as evidence for cosmic airbursts and impacts 12,900 years ago

  • Original language description

    It has been proposed that fragments of an asteroid or comet impacted Earth, deposited silica-and iron-rich microspherules and other proxies across several continents, and triggered the Younger Dryas cooling episode 12,900 years ago. Although many independent groups have confirmed the impact evidence, the hypothesis remains controversial because some groups have failed to do so. We examined sediment sequences from 18 dated Younger Dryas boundary (YDB) sites across three continents (North America, Europe,and Asia), spanning 12,000 km around nearly one-third of the planet. All sites display abundant microspherules in the YDB with none or few above and below. In addition, three sites (Abu Hureyra, Syria; Melrose, Pennsylvania; and Blackville, South Carolina) display vesicular, high-temperature, siliceous scoria-like objects, or SLOs, that match the spherules geochemically. We compared YDB objects with melt products from a known cosmic impact (Meteor Crater, Arizona) and from the 1945 Trin

  • Czech name

  • Czech description

Classification

  • Type

    J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

  • CEP classification

    DC - Seismology, volcanology and Earth structure

  • OECD FORD branch

Result continuities

  • Project

  • Continuities

    I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Others

  • Publication year

    2012

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Name of the periodical

    Proceedings of the National Academy of Sciences of the United States of America

  • ISSN

    0027-8424

  • e-ISSN

  • Volume of the periodical

    109

  • Issue of the periodical within the volume

    28

  • Country of publishing house

    US - UNITED STATES

  • Number of pages

    10

  • Pages from-to

    "E1903"-"E1912"

  • UT code for WoS article

    000306642100005

  • EID of the result in the Scopus database