The Braunschweig meteorite − a recent L6 chondrite fall in Germany

Bartoschewitz, R.; Appel, Peter; Barrat, Jean‐Alix; Bischoff, A.; Caffee, Marc W.; Franchi, I. A.; Gabélica, Z.; Greenwood, Richard C.; Harir, Mourad; Harries, Dennis; Hochleitner, Rupert; Hopp, J.; Laubenstein, M.; Mader, B.; Marques, Rosa; Morlok, A.; Nolze, Gert; Prudêncio, M.I.; Rochette, P.; Ruf, Alexander; Schmitt‐Kopplin, Philippe; Seemann, Erhard; Tagle, R.; Wach, Radosław A.; Welten, K. C.; Weyrauch, Mona; Wimmer, K.

doi:10.1016/j.chemer.2016.10.004

Cited by 18 publications

(29 citation statements)

References 64 publications

(82 reference statements)

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“…), organomagnesium compounds can be formed preferentially in highly metamorphic meteorites (see also Bartoschewitz et al. and Bischoff et al. concerning the falls of Braunschweig and Stubenberg for comparison); here as well complete signatures in CHOMg compounds formed during metamorphism of the Ejby parent body.…”

Section: Discussionmentioning

confidence: 67%

“…Together with the meteorite falls of Braunschweig (L6; Bartoschewitz et al. ), Žd’ár nad Sázavou (L3; Spurny et al. ), Stubenberg (LL6; Bischoff et al.…”

Section: Discussionmentioning

confidence: 99%

“…Unfortunately, the obtained video data are sparse, and although Bartoschewitz et al. () and Spurny et al. () were able to estimate the direction and preatmospheric velocity (14.52 ± 0.10 km s −1 ) of the meteoroid, it was not possible to measure the deceleration of the meteoroid in the final, lowest part of the luminous trajectory.…”

Section: Analytical Proceduresmentioning

confidence: 99%

“…The still images and the radiometric light curve indicate several flaring events and, thus, fragmentation (Bartoschewitz et al. ; Spurny et al. ).…”

Section: Analytical Proceduresmentioning

confidence: 99%

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Ejby—A new H5/6 ordinary chondrite fall in Copenhagen, Denmark

Haack

Sørensen

Bischoff

et al. 2019

Meteorit & Planetary Scien

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On February 6, 2016 at 21:07:19 UT, a very bright fireball was seen over the eastern part of Denmark. The weather was cloudy over eastern Denmark, but many people saw the sky light up—even in the heavily illuminated Copenhagen. Two hundred and thirty three reports of the associated sound and light phenomena were received by the Danish fireball network. We have formed a consortium to describe the meteorite and the circumstances of the fall and the results are presented in this paper. The first fragment of the meteorite was found the day after the fall, and in the following weeks, a total of 11 fragments with a total weight of 8982 g were found. The meteorite is an unbrecciated, weakly shocked (S2), ordinary H chondrite of petrologic type 5/6 (Bouvier et al. 2017). The concentration of the cosmogenic radionuclides suggests that the preatmospheric radius was rather small ~20 cm. The cosmic ray exposure age of Ejby (83 ± 11 Ma) is the highest of an H chondrite and the second highest age for an ordinary chondrite. Using the preatmospheric orbit of the Ejby meteoroid (Spurny et al. 2017) locations of the recovered fragments, and wind data from the date of the fall, we have modeled the dark flight (below 18 km) of the fragments. The recovery location of the largest fragment can only be explained if aerodynamic effects during the dark flight phase are included. The recovery location of all other fragments are consistent with the dark flight modeling.

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Section: Discussionmentioning

confidence: 67%

“…Together with the meteorite falls of Braunschweig (L6; Bartoschewitz et al. ), Žd’ár nad Sázavou (L3; Spurny et al. ), Stubenberg (LL6; Bischoff et al.…”

Section: Discussionmentioning

confidence: 99%

Section: Analytical Proceduresmentioning

confidence: 99%

“…The still images and the radiometric light curve indicate several flaring events and, thus, fragmentation (Bartoschewitz et al. ; Spurny et al. ).…”

Section: Analytical Proceduresmentioning

confidence: 99%

See 2 more Smart Citations

Ejby—A new H5/6 ordinary chondrite fall in Copenhagen, Denmark

Haack

Sørensen

Bischoff

et al. 2019

Meteorit & Planetary Scien

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“…After the meteorite falls of Braunschweig (L6; Bartoschewitz et al. ), Žd’ár nad Sázavou (Spurný x; Spurný et al. ), and Ejby (H5/6; Meteoritical Bulletin Database ; Spurný et al 2017), Stubenberg is the fourth recovered meteorite fall within less than 3 yr impacting Earth only ~800 km apart.…”

Section: Introductionmentioning

confidence: 99%

The Stubenberg meteorite—An LL6 chondrite fragmental breccia recovered soon after precise prediction of the strewn field

Bischoff

Barrat

Bauer

et al. 2017

Meteorit & Planetary Scien

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On March 6, 2016 at 21:36:51 UT, extended areas of Upper Austria, Bavaria (Germany) and the southwestern part of the Czech Republic were illuminated by a very bright bolide. This bolide was recorded by instruments in the Czech part of the European Fireball Network and it enabled complex and precise description of this event including prediction of the impact area. So far six meteorites totaling 1473 g have been found in the predicted area. The first pieces were recovered on March 12, 2016 on a field close to the village of Stubenberg (Bavaria). Stubenberg is a weakly shocked (S3) fragmental breccia consisting of abundant highly recrystallized rock fragments embedded in a clastic matrix. The texture, the large grain size of plagioclase, and the homogeneous compositions of olivine (Fa31.4) and pyroxene (Fs25.4) clearly indicate that Stubenberg is an LL6 chondrite breccia. This is consistent with the data on O, Ti, and Cr isotopes. Stubenberg does not contain solar wind‐implanted noble gases. Data on the bulk chemistry, IR spectroscopy, cosmogenic nuclides, and organic components also indicate similarities to other metamorphosed LL chondrites. Noble gas studies reveal that the meteorite has a cosmic ray exposure (CRE) age of 36 ± 3 Ma and that most of the cosmogenic gases were produced in a meteoroid with a radius of at least 35 cm. This is larger than the size of the meteoroid which entered the Earth's atmosphere, which is constrained to <20 cm from short‐lived radionuclide data. In combination, this might suggest a complex exposure history for Stubenberg.

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