Ooids (/ ˈoʊˌɔɪd /, [1] from Ancient Greek ᾠόν (ōión) 'egg stone') [2] are small (commonly ≤2 mm in diameter), spheroidal, "coated" (layered) sedimentary grains, usually composed of calcium …

2024年7月1日 · Ooids are a common constituent of carbonate rock throughout the last 3.2 billion years. The chemical and physical characteristics of ooids record essential details of the …

2019年3月1日 · Ooids are spherical or ovoidal carbonate grains (typically <2 mm in diameter) of smooth, well-laminated cortices that accrete around a nucleus, typically a bioclast, peloid, …

2021年2月22日 · We present a method for making 3D reconstructions by serial grinding and imaging, which enables accurate measurement of the morphology of individual ooids within an …

2018年1月29日 · Here we investigate a rare and beautiful geophysical problem that combines both of these processes; the shape evolution of carbonate particles known as ooids. We …

2020年7月11日 · Ooids are sand grains that are composed of a series of concentric layers of calcium carbonate precipitated around a smaller particle. We hypothesized that the layers in …

Ooids 是小的 (< 2毫米)，球状， “涂上了” (分层堆积) 沉淀 五谷，通常组成由 碳酸钙，但有时组成 铁-或 磷酸盐-基于矿物。 通常Ooids形式在 海底通常在浅热带海 (在附近 巴哈马例如，或者在 …

2024年2月7日 · Ooids are coated grains composed of a tangential or radial cortex growing around a nucleus. They are common in carbonate deposits of almost any geological age and provide …

Ooids are spherical-subspherical grains, consisting of one or more regular concentric lamellae around a nucleus, usually a carbonate particle or quartz grain. Sediment composed of ooids is …

2024年3月12日 · Ooids are a common constituent of carbonate rock throughout the last 3.2 billion years. The chemical and physical characteristics of ooids record essential details of the …