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DOI | 10.1029/2020GL089151 |
Cross‐Over Infrared Spectroscopy: A New Tool for the Remote Determination of Olivine Composition | |
C. H. Kremer; J. F. Mustard; C. M. Pieters | |
2020-09-21 | |
发表期刊 | Geophysical Research Letters |
出版年 | 2020 |
英文摘要 | Olivine ([Mg,Fe]2SiO4) has been remotely detected on numerous Solar System bodies, but its composition has been only partially constrained using visible‐near infrared (VNIR, 0.5‐3 μm) and mid‐infrared (MIR, 8‐15 μm) spectra. Meanwhile, the spectral character of olivine in the “cross‐over” region of the infrared (4‐8 μm) remains generally unexplored. We examine the relationship between olivine Mg# (molar Mg/[Mg+Fe] x 100) and the wavelength‐positions of two strong, discrete overtone‐combination bands at ~5.6 and ~6.0 μm. In reflectance and thermal emission spectra measured for 47 synthetic and natural olivine samples that span the Mg‐Fe solid solution, we find that the 5.6 and 6.0 μm bands shift systematically to longer wavelengths by 0.11 μm and 0.10 μm, respectively, with increasing Fe content. Our results indicate that olivine Mg# may be determined within ±10 mol% forsterite using the positions of these two bands, making “cross‐over” region spectroscopy a potentially powerful remote sensing tool. |
领域 | 气候变化 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/296398 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | C. H. Kremer,J. F. Mustard,C. M. Pieters. Cross‐Over Infrared Spectroscopy: A New Tool for the Remote Determination of Olivine Composition[J]. Geophysical Research Letters,2020. |
APA | C. H. Kremer,J. F. Mustard,&C. M. Pieters.(2020).Cross‐Over Infrared Spectroscopy: A New Tool for the Remote Determination of Olivine Composition.Geophysical Research Letters. |
MLA | C. H. Kremer,et al."Cross‐Over Infrared Spectroscopy: A New Tool for the Remote Determination of Olivine Composition".Geophysical Research Letters (2020). |
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