A new type of oxidized and pre-irradiated micrometeorite
This paper investigates the mineralogy and noble gas composition of a unique micrometeorite from the Transantarctic Mountains, #45c.29. The magnetite rim and the particle interior with olivine, pyroxene and magnetite relict grains (30-250µm in size) set in a vesicular mesostasis are typical features...
Gespeichert in:
| Hauptverfasser: | , , , , |
|---|---|
| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
[15 July 2018]
|
| In: |
Geochimica et cosmochimica acta
Year: 2018, Jahrgang: 233, Pages: 135-158 |
| ISSN: | 1872-9533 |
| DOI: | 10.1016/j.gca.2018.04.010 |
| Online-Zugang: | Verlag, Volltext: https://doi.org/10.1016/j.gca.2018.04.010 Verlag, Volltext: http://www.sciencedirect.com/science/article/pii/S0016703718302072 
|
| Verfasserangaben: | Carole Cordier, Bastian Baecker, Ulrich Ott, Luigi Folco, Mario Trieloff |
MARC
| LEADER | 00000caa a2200000 c 4500 | ||
|---|---|---|---|
| 001 | 1667589962 | ||
| 003 | DE-627 | ||
| 005 | 20220816172526.0 | ||
| 007 | cr uuu---uuuuu | ||
| 008 | 190618s2018 xx |||||o 00| ||eng c | ||
| 024 | 7 | |a 10.1016/j.gca.2018.04.010 |2 doi | |
| 035 | |a (DE-627)1667589962 | ||
| 035 | |a (DE-599)KXP1667589962 | ||
| 035 | |a (OCoLC)1341228616 | ||
| 040 | |a DE-627 |b ger |c DE-627 |e rda | ||
| 041 | |a eng | ||
| 084 | |a 31 |2 sdnb | ||
| 100 | 1 | |a Cordier, Carole |d 1979- |e VerfasserIn |0 (DE-588)1188637975 |0 (DE-627)1667590944 |4 aut | |
| 245 | 1 | 2 | |a A new type of oxidized and pre-irradiated micrometeorite |c Carole Cordier, Bastian Baecker, Ulrich Ott, Luigi Folco, Mario Trieloff |
| 264 | 1 | |c [15 July 2018] | |
| 300 | |b Illustrationen | ||
| 300 | |a 24 | ||
| 336 | |a Text |b txt |2 rdacontent | ||
| 337 | |a Computermedien |b c |2 rdamedia | ||
| 338 | |a Online-Ressource |b cr |2 rdacarrier | ||
| 500 | |a Gesehen am 18.06.2019 | ||
| 520 | |a This paper investigates the mineralogy and noble gas composition of a unique micrometeorite from the Transantarctic Mountains, #45c.29. The magnetite rim and the particle interior with olivine, pyroxene and magnetite relict grains (30-250µm in size) set in a vesicular mesostasis are typical features of coarse-grained, partially melted micrometeorites. Particle #45c.29 stands out from other micrometeorites of this type by the texture of the mesostasis made of abundant plagioclase and augite laths, the remarkably high Ni contents in magnetite and olivine relict grains, and by the similarly high abundance of cosmogenic noble gases (21Necos up to 1.62×10−7 cm3 STP/g and 38Ar up to 7.2×10−8 cm3 STP/g). The high Ni content of Fa26 olivine relict grains (NiO∼0.65 wt%), the high Ni (NiO∼0.8 wt%) and Ti (TiO2 ∼ 0.3 wt%) contents of magnetite relicts, and the oxygen isotope composition of a sample of the particle (δ18O ∼ 2.3‰, δ17O ∼ −1.5‰), suggest a parentage with rare equilibrated CK chondrites. Pyroxene and plagioclase are not expected to crystallize during atmospheric entry of micrometeoroids. Their occurrence in #45c.29 may be explained by the Ca-, Al- and Na- rich composition of its precursor - in agreement with the high abundance of plagioclase reported in the matrix of CK chondrites - if combined with a relatively low cooling rate and, therefore, unusual atmospheric entry parameters (velocity/angle) of the micrometeoroid. Given these specific entry parameters, the particle has recorded unique information on mineralogical and textural transformations of micrometeoroids during atmospheric entry, with solid-state oxidation of the olivine relict grains in the igneous rim, and partial melting of relict mineral phases and relict/melt reactions in the particle interior. The cosmogenic 21Ne/22Ne ratio of 0.94±0.02 is incompatible with major production by cosmogenic ray irradiation of a small particle in space. We propose that micrometeorite #45c.29 mostly records an earlier irradiation stage, in a meteoroid or more likely near the surface (<20cm in depth) of an asteroid. In contrast, most of the other unmelted and scoriaceous micrometeorites analyzed for noble gases - if coming from asteroidal sources of the Main Belt - seem to have sampled deeper parts of their parent body, where they were shielded from cosmic rays and from where they were excavated during high-energy disruptive processes. | ||
| 650 | 4 | |a CK chondrites | |
| 650 | 4 | |a Cosmogenic Ne and Ar | |
| 650 | 4 | |a Interplanetary dust | |
| 650 | 4 | |a Micrometeorite | |
| 650 | 4 | |a Noble gases | |
| 650 | 4 | |a Oxidation | |
| 650 | 4 | |a Pre-irradiation | |
| 700 | 1 | |a Baecker, Bastian |e VerfasserIn |0 (DE-588)1050511530 |0 (DE-627)784112789 |0 (DE-576)404791611 |4 aut | |
| 700 | 1 | |a Ott, Uli |e VerfasserIn |0 (DE-588)1075557836 |0 (DE-627)833481282 |0 (DE-576)44364537X |4 aut | |
| 700 | 1 | |a Folco, Luigi |e VerfasserIn |4 aut | |
| 700 | 1 | |a Trieloff, Mario |e VerfasserIn |0 (DE-588)1019806664 |0 (DE-627)691023905 |0 (DE-576)35882690X |4 aut | |
| 773 | 0 | 8 | |i Enthalten in |t Geochimica et cosmochimica acta |d New York, NY [u.a.] : Elsevier, 1950 |g 233(2018), Seite 135-158 |h Online-Ressource |w (DE-627)300898797 |w (DE-600)1483679-8 |w (DE-576)120883465 |x 1872-9533 |7 nnas |a A new type of oxidized and pre-irradiated micrometeorite |
| 773 | 1 | 8 | |g volume:233 |g year:2018 |g pages:135-158 |g extent:24 |a A new type of oxidized and pre-irradiated micrometeorite |
| 856 | 4 | 0 | |u https://doi.org/10.1016/j.gca.2018.04.010 |x Verlag |x Resolving-System |3 Volltext |
| 856 | 4 | 0 | |u http://www.sciencedirect.com/science/article/pii/S0016703718302072 |x Verlag |3 Volltext |
| 951 | |a AR | ||
| 992 | |a 20190618 | ||
| 993 | |a Article | ||
| 994 | |a 2018 | ||
| 998 | |g 1019806664 |a Trieloff, Mario |m 1019806664:Trieloff, Mario |d 120000 |d 121000 |e 120000PT1019806664 |e 121000PT1019806664 |k 0/120000/ |k 1/120000/121000/ |p 5 |y j | ||
| 998 | |g 1050511530 |a Baecker, Bastian |m 1050511530:Baecker, Bastian |p 2 | ||
| 999 | |a KXP-PPN1667589962 |e 348817347X | ||
| BIB | |a Y | ||
| SER | |a journal | ||
| JSO | |a {"id":{"doi":["10.1016/j.gca.2018.04.010"],"eki":["1667589962"]},"origin":[{"dateIssuedDisp":"[15 July 2018]","dateIssuedKey":"2018"}],"name":{"displayForm":["Carole Cordier, Bastian Baecker, Ulrich Ott, Luigi Folco, Mario Trieloff"]},"relHost":[{"id":{"issn":["1872-9533"],"eki":["300898797"],"zdb":["1483679-8"]},"origin":[{"dateIssuedKey":"1950","publisher":"Elsevier","dateIssuedDisp":"1950-","publisherPlace":"New York, NY [u.a.]"}],"physDesc":[{"extent":"Online-Ressource"}],"title":[{"title_sort":"Geochimica et cosmochimica acta","title":"Geochimica et cosmochimica acta","subtitle":"journal of the Geochemical Society and the Meteoritical Society"}],"recId":"300898797","language":["eng"],"corporate":[{"display":"Geochemical Society","roleDisplay":"Herausgebendes Organ","role":"isb"},{"role":"isb","display":"Meteoritical Society","roleDisplay":"Herausgebendes Organ"}],"type":{"bibl":"periodical","media":"Online-Ressource"},"note":["Gesehen am 02.12.24"],"disp":"A new type of oxidized and pre-irradiated micrometeoriteGeochimica et cosmochimica acta","part":{"pages":"135-158","year":"2018","extent":"24","text":"233(2018), Seite 135-158","volume":"233"},"pubHistory":["1.1950/51 - 75.2011; Vol. 76.2012 -"]}],"physDesc":[{"noteIll":"Illustrationen","extent":"24 S."}],"title":[{"title_sort":"new type of oxidized and pre-irradiated micrometeorite","title":"A new type of oxidized and pre-irradiated micrometeorite"}],"person":[{"family":"Cordier","given":"Carole","display":"Cordier, Carole","roleDisplay":"VerfasserIn","role":"aut"},{"display":"Baecker, Bastian","roleDisplay":"VerfasserIn","role":"aut","family":"Baecker","given":"Bastian"},{"display":"Ott, Uli","roleDisplay":"VerfasserIn","role":"aut","family":"Ott","given":"Uli"},{"family":"Folco","given":"Luigi","roleDisplay":"VerfasserIn","display":"Folco, Luigi","role":"aut"},{"given":"Mario","family":"Trieloff","role":"aut","roleDisplay":"VerfasserIn","display":"Trieloff, Mario"}],"language":["eng"],"recId":"1667589962","type":{"bibl":"article-journal","media":"Online-Ressource"},"note":["Gesehen am 18.06.2019"]} | ||
| SRT | |a CORDIERCARNEWTYPEOFO1520 | ||