期刊
GEOPHYSICAL RESEARCH LETTERS
卷 40, 期 6, 页码 1043-1048出版社
AMER GEOPHYSICAL UNION
DOI: 10.1002/grl.50255
关键词
-
资金
- NLSI [NNA09DB34A]
Despite several lines of evidence for efficient mixing of impact melt in complex craters, we document mineralogical heterogeneity in impact melt deposit on a scale of tens of kilometers on the Moon in the 96 km-diameter Copernicus crater. This heterogeneity is in the form of a large, sinuous impact melt feature on the floor and northern wall that is spectrally distinct from melt in its immediate vicinity. This melt feature spanning >30 km in length and 0.5-5 km in width has relatively short-wavelength, narrow ferrous absorption bands near similar to 900 nm and similar to 2000 nm indicating a more Mg-rich pyroxene composition as compared to impact melt deposit in the vicinity which is relatively rich in Fe/Ca-pyroxenes. This distinction provides evidence for the preservation of compositional heterogeneity in impact melt in complex craters on the Moon and documents an example of inefficient mixing of melt during the cratering process.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据