当前位置: X-MOL 学术Meteorit. Planet. Sci. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Mineralogy, petrology, geochemistry, and chronology of the Murrili (H5) meteorite fall: The third recovered fall from the Desert Fireball Network
Meteoritics and Planetary Science ( IF 2.2 ) Pub Date : 2021-02-12 , DOI: 10.1111/maps.13615
S. Anderson 1 , G. K. Benedix 1, 2 , L. V. Forman 1 , L. Daly 1, 3 , R. C. Greenwood 4 , I. A. Franchi 4 , J. M. Friedrich 5, 6 , R. Macke 7 , S. Wiggins 8 , D. Britt 8, 9 , J. M. Cadogan 10 , M. M. M. Meier 11, 12 , C. Maden 11 , H. Busemann 11 , K. C. Welten 13 , M. W. Caffee 14, 15 , F. Jourdan 1, 16 , C. Mayers 1, 16 , T. Kennedy 1, 16 , B. Godel 17 , L. Esteban 17 , K. Merigot 18 , A. W. R. Bevan 2 , P. A. Bland 1, 2 , J. Paxman 1 , M. C. Towner 1 , M. Cupak 1 , E. K. Sansom 1 , R. Howie 1 , H. Devillepoix 1 , T. Jansen‐Sturgeon 1 , D. Stuart 19 , D. Strangway 19
Affiliation  

Murrili, the third meteorite recovered by the Desert Fireball Network, is analyzed using mineralogy, oxygen isotopes, bulk chemistry, physical properties, noble gases, and cosmogenic radionuclides. The modal mineralogy, bulk chemistry, magnetic susceptibility, physical properties, and oxygen isotopes of Murrili point to it being an H5 ordinary chondrite. It is heterogeneously shocked (S2–S5), depending on the method used to determine it, although Murrili is not obviously brecciated in texture. Cosmogenic radionuclides yield a cosmic ray exposure age of 6–8 Ma, and a pre‐atmospheric meteoroid size of 15–20 cm in radius. Murrili’s fall and subsequent month‐long embedment into the salt lake Kati Thanda significantly altered the whole rock, evident in its Mössbauer spectra, and visual inspection of cut sections. Murrili may have experienced minor, but subsequent, impacts after its formation 4475.3 ± 2.3 Ma, which left it heterogeneously shocked.

中文翻译:

穆里利(H5)陨石坠落的矿物学,岩石学,地球化学和年代学:从沙漠火球网获得的第三次坠落

沙漠火球网络回收的第三颗陨石Murrili使用矿物学,氧同位素,本体化学,物理性质,稀有气体和宇宙成因放射性核素进行了分析。Murrili的模态矿物学,本体化学,磁化率,物理性质和氧同位素表明它是H5普通球粒陨石。尽管确定的Murrili质地没有明显的角砾化,但它还是受到了不同程度的冲击(S2-S5),具体取决于确定它的方法。宇宙成因放射性核素产生的宇宙射线暴露年龄为6-8 Ma,大气前流星体的半径为15-20 cm。穆里利(Murrili)的下落以及随后长达一个月的嵌入盐湖(Kati Thanda)极大地改变了整个岩石,这在穆斯堡尔(Mössbauer)光谱和切面的目视检查中很明显。Murrili可能经历过未成年人,
更新日期:2021-04-02
down
wechat
bug