Itokawa is a Regolith Breccia, Not a Rubble Pile
Itokawa is a Regolith Breccia, Not a Rubble Pile
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糸川是风化角砾岩，而不是碎石堆
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发表时间：
2017
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通讯作者：
D. Sears
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作者：
D. Sears
简介：藤原等人。将糸川描述为“瓦砾堆”[1]，原因很容易理解（图 1）。这颗 0.535 x 0.294 x 0.209 km 的微小近地小行星的表面覆盖着松散的厘米大小和更大的砾石和巨石 [2]。它的形状表明它是分叉的。月球表面非常相似，由一层厚厚的细粒材料风化层组成，上面散布着各种尺寸的巨石（图 2）。因此，我认为糸川不是碎石堆，而是风化角砾岩。
Introduction: Fujiwara et al. described Itokawa as a “rubble pile” [1] and it is easy to understand why (Fig. 1). The surface of this tiny 0.535 x 0.294 x 0.209 km near-Earth asteroid is covered with unconsolidated cm-sized and larger gravel and boulders [2]. Its shape suggests that it is bifurcated. The lunar surface is very similar and consists of a thick regolith of fine grained material strewn with boulders of a wide size range (Fig. 2). Thus, I argue that Itokawa is not a rubble pile, but a regolith breccia.