Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1111/j.1945-5100.2006.tb00998.x |
Shisr 043 (IIIAB medium octahedrite): The first iron meteorite from the Oman desert | |
Al-Kathiri, A.; Hofmann, B. A.; Gnos, E.; Eugster, O.; Welten, K. C.; Kraehenbuehl, U. | |
通讯作者 | Al-Kathiri, A. |
来源期刊 | METEORITICS & PLANETARY SCIENCE
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ISSN | 1086-9379 |
EISSN | 1945-5100 |
出版年 | 2006 |
卷号 | 41期号:8页码:A217-A230 |
英文摘要 | The iron meteorite Shisr 043 is a single mass of 8267 g found in the south Oman desert 42 kin NE of the Shisr village. It is the first iron identified among the >1400 individual meteorites reported from Oman. The meteorite is a slightly elongated mass showing only minor rusting, a partially smooth and partially rough surface with octahedral cleavage, and a partially preserved metallic fusion crust typically 0.75 mm thick. The undeformed Widmanstatten pattern with a mean kamacite bandwidth of 1.0 +/- 0.1 mm (n = 97) indicates structural classification as a medium octahedrite. From the bulk composition, Ni = 8.06 wt%, Ga = 18.8 ppm, Ge = 37.25 ppm, and Ir = 3.92 ppm, the meteorite is classified as IIIAB, the most common group of iron meteorites. The cosmic-ray exposure (CRE) age based on He-3, Ne-21, Ar-38 concentrations and Be-10-Ne-21, Al-26-Ne-21, and Cl-36-Ar-36 ratios is 290 +/- 20 Ma. This age falls within the range observed for type IIIAB iron meteorites, but does not coincide with the main cluster. The cosmogenic noble gas and radionuclide data indicate that Shisr 043 had a relatively small pre-atmospheric mass. The low degree of weathering is consistent with a young terrestrial age of <10,000 years based on the saturated Ca-41 concentration. Shisr 043 is not paired with any of the other eight known iron meteorites from the Arabian Peninsula. |
类型 | Article |
语种 | 英语 |
国家 | Switzerland ; Oman ; USA |
收录类别 | SCI-E |
WOS记录号 | WOS:000239172300410 |
WOS关键词 | RAY-PRODUCED NUCLIDES ; NOBLE-GASES ; PRODUCTION-RATES ; AMS STANDARDS ; EXPOSURE AGES ; RARE-GASES ; BULLETIN ; ESTHERVILLE ; POTASSIUM ; SEPTEMBER |
WOS类目 | Geochemistry & Geophysics |
WOS研究方向 | Geochemistry & Geophysics |
来源机构 | University of California, Berkeley |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/152488 |
作者单位 | (1)Univ Bern, Inst Geol, CH-3012 Bern, Switzerland;(2)Minist Commerce & Ind, Directorate Gen Commerce & Ind, Salalah, Oman;(3)Nat Hist Museum Burgergemeinde Bern, CH-3005 Bern, Switzerland;(4)Univ Bern, Inst Phys, Abt Weltraumforsch & Planetol, CH-3012 Bern, Switzerland;(5)Univ Calif Berkeley, Space Sci Lab, Berkeley, CA 94720 USA;(6)Univ Bern, Dept Biochem & Chem, CH-3012 Bern, Switzerland |
推荐引用方式 GB/T 7714 | Al-Kathiri, A.,Hofmann, B. A.,Gnos, E.,et al. Shisr 043 (IIIAB medium octahedrite): The first iron meteorite from the Oman desert[J]. University of California, Berkeley,2006,41(8):A217-A230. |
APA | Al-Kathiri, A.,Hofmann, B. A.,Gnos, E.,Eugster, O.,Welten, K. C.,&Kraehenbuehl, U..(2006).Shisr 043 (IIIAB medium octahedrite): The first iron meteorite from the Oman desert.METEORITICS & PLANETARY SCIENCE,41(8),A217-A230. |
MLA | Al-Kathiri, A.,et al."Shisr 043 (IIIAB medium octahedrite): The first iron meteorite from the Oman desert".METEORITICS & PLANETARY SCIENCE 41.8(2006):A217-A230. |
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