Shocked quartz in distal ejecta from the Ries impact event (Germany) found at similar to 180 km distance, near Bernhardzell, eastern Switzerland

Research output: Contribution to journal › Journal article › Research › peer-review

Standard

Shocked quartz in distal ejecta from the Ries impact event (Germany) found at similar to 180 km distance, near Bernhardzell, eastern Switzerland. / Holm-Alwmark, Sanna; Alwmark, Carl; Ferriere, Ludovic; Meier, Matthias M. M.; Lindstrom, Sofie; Kenny, Gavin G.; Sheldon, Emma; Schweigert, Gunter; Spotl, Christoph; Whitehouse, Martin J.; Hofmann, Beda A.

In: Scientific Reports, Vol. 11, No. 1, 7438, 02.04.2021.

Research output: Contribution to journal › Journal article › Research › peer-review

Harvard

Holm-Alwmark, S, Alwmark, C, Ferriere, L, Meier, MMM, Lindstrom, S, Kenny, GG, Sheldon, E, Schweigert, G, Spotl, C, Whitehouse, MJ & Hofmann, BA 2021, 'Shocked quartz in distal ejecta from the Ries impact event (Germany) found at similar to 180 km distance, near Bernhardzell, eastern Switzerland', Scientific Reports, vol. 11, no. 1, 7438. https://doi.org/10.1038/s41598-021-86685-2

APA

Holm-Alwmark, S., Alwmark, C., Ferriere, L., Meier, M. M. M., Lindstrom, S., Kenny, G. G., Sheldon, E., Schweigert, G., Spotl, C., Whitehouse, M. J., & Hofmann, B. A. (2021). Shocked quartz in distal ejecta from the Ries impact event (Germany) found at similar to 180 km distance, near Bernhardzell, eastern Switzerland. Scientific Reports, 11(1), [7438]. https://doi.org/10.1038/s41598-021-86685-2

Vancouver

Holm-Alwmark S, Alwmark C, Ferriere L, Meier MMM, Lindstrom S, Kenny GG et al. Shocked quartz in distal ejecta from the Ries impact event (Germany) found at similar to 180 km distance, near Bernhardzell, eastern Switzerland. Scientific Reports. 2021 Apr 2;11(1). 7438. https://doi.org/10.1038/s41598-021-86685-2

Author

Holm-Alwmark, Sanna ; Alwmark, Carl ; Ferriere, Ludovic ; Meier, Matthias M. M. ; Lindstrom, Sofie ; Kenny, Gavin G. ; Sheldon, Emma ; Schweigert, Gunter ; Spotl, Christoph ; Whitehouse, Martin J. ; Hofmann, Beda A. / Shocked quartz in distal ejecta from the Ries impact event (Germany) found at similar to 180 km distance, near Bernhardzell, eastern Switzerland. In: Scientific Reports. 2021 ; Vol. 11, No. 1.

Bibtex

@article{32ab63a3887e4e2eb3125744e2bfdac3,
title = "Shocked quartz in distal ejecta from the Ries impact event (Germany) found at similar to 180 km distance, near Bernhardzell, eastern Switzerland",
abstract = "Impact ejecta formation and emplacement is of great importance when it comes to understanding the process of impact cratering and consequences of impact events in general. Here we present a multidisciplinary investigation of a distal impact ejecta layer, the Blockhorizont, that occurs near Bernhardzell in eastern Switzerland. We provide unambiguous evidence that this layer is impact-related by confirming the presence of shocked quartz grains exhibiting multiple sets of planar deformation features. Average shock pressures recorded by the quartz grains are similar to 19 GPa for the investigated sample. U-Pb dating of zircon grains from bentonites in close stratigraphic context allows us to constrain the depositional age of the Blockhorizont to similar to 14.8 Ma. This age, in combination with geochemical and paleontological analysis of ejecta particles, is consistent with deposition of this material as distal impact ejecta from the Ries impact structure, located similar to 180 km away, in Germany. Our observations are important for constraining models of impact ejecta emplacement as ballistically and non-ballistically transported fragments, derived from vastly different depths in the pre-impact target, occur together within the ejecta layer. These observations make the Ries ejecta one of the most completely preserved ejecta deposit on Earth for an impact structure of that size.",
author = "Sanna Holm-Alwmark and Carl Alwmark and Ludovic Ferriere and Meier, {Matthias M. M.} and Sofie Lindstrom and Kenny, {Gavin G.} and Emma Sheldon and Gunter Schweigert and Christoph Spotl and Whitehouse, {Martin J.} and Hofmann, {Beda A.}",
year = "2021",
month = apr,
day = "2",
doi = "10.1038/s41598-021-86685-2",
language = "English",
volume = "11",
journal = "Scientific Reports",
issn = "2045-2322",
publisher = "nature publishing group",
number = "1",

}

RIS

TY - JOUR

T1 - Shocked quartz in distal ejecta from the Ries impact event (Germany) found at similar to 180 km distance, near Bernhardzell, eastern Switzerland

AU - Holm-Alwmark, Sanna

AU - Alwmark, Carl

AU - Ferriere, Ludovic

AU - Meier, Matthias M. M.

AU - Lindstrom, Sofie

AU - Kenny, Gavin G.

AU - Sheldon, Emma

AU - Schweigert, Gunter

AU - Spotl, Christoph

AU - Whitehouse, Martin J.

AU - Hofmann, Beda A.

PY - 2021/4/2

Y1 - 2021/4/2

N2 - Impact ejecta formation and emplacement is of great importance when it comes to understanding the process of impact cratering and consequences of impact events in general. Here we present a multidisciplinary investigation of a distal impact ejecta layer, the Blockhorizont, that occurs near Bernhardzell in eastern Switzerland. We provide unambiguous evidence that this layer is impact-related by confirming the presence of shocked quartz grains exhibiting multiple sets of planar deformation features. Average shock pressures recorded by the quartz grains are similar to 19 GPa for the investigated sample. U-Pb dating of zircon grains from bentonites in close stratigraphic context allows us to constrain the depositional age of the Blockhorizont to similar to 14.8 Ma. This age, in combination with geochemical and paleontological analysis of ejecta particles, is consistent with deposition of this material as distal impact ejecta from the Ries impact structure, located similar to 180 km away, in Germany. Our observations are important for constraining models of impact ejecta emplacement as ballistically and non-ballistically transported fragments, derived from vastly different depths in the pre-impact target, occur together within the ejecta layer. These observations make the Ries ejecta one of the most completely preserved ejecta deposit on Earth for an impact structure of that size.

AB - Impact ejecta formation and emplacement is of great importance when it comes to understanding the process of impact cratering and consequences of impact events in general. Here we present a multidisciplinary investigation of a distal impact ejecta layer, the Blockhorizont, that occurs near Bernhardzell in eastern Switzerland. We provide unambiguous evidence that this layer is impact-related by confirming the presence of shocked quartz grains exhibiting multiple sets of planar deformation features. Average shock pressures recorded by the quartz grains are similar to 19 GPa for the investigated sample. U-Pb dating of zircon grains from bentonites in close stratigraphic context allows us to constrain the depositional age of the Blockhorizont to similar to 14.8 Ma. This age, in combination with geochemical and paleontological analysis of ejecta particles, is consistent with deposition of this material as distal impact ejecta from the Ries impact structure, located similar to 180 km away, in Germany. Our observations are important for constraining models of impact ejecta emplacement as ballistically and non-ballistically transported fragments, derived from vastly different depths in the pre-impact target, occur together within the ejecta layer. These observations make the Ries ejecta one of the most completely preserved ejecta deposit on Earth for an impact structure of that size.

U2 - 10.1038/s41598-021-86685-2

DO - 10.1038/s41598-021-86685-2

M3 - Journal article

C2 - 33811229

VL - 11

JO - Scientific Reports

JF - Scientific Reports

SN - 2045-2322

IS - 1

M1 - 7438

ER -

ID: 260666043