| 词汇 | arkose |
| 释义 | BETA Examples of arkosearkose isn’t in the Cambridge Dictionary yet. You can help! Arkose is a sand or sandstone with considerable feldspar content, derived from weathering and erosion of a (usually nearby) granitic rock outcrop. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Arkose is often associated with conglomerate deposits sourced from granitic terrain and is often found above unconformities in the immediate vicinity of granite terrains. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Arkose sandstones are more than 25 percent feldspar. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Its cliffs, made of arkose sandstone, are a very prominent landscape feature visible for miles. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The sand often contains kaolinized feldspar, making it an arkose. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Arkosic sand is sand that is similarly rich in feldspar, and thus the potential precursor of arkose. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The sand grains making up an arkose may range from fine to very coarse, but tends toward the coarser end of the scale. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It was described as red shale and sandstone with beds of micaceous sandstone, arkose, and conglomerate. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Grus sand, when cemented into a sandstone, will form an arkose. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Fossils are rare in arkose, due to the depositional processes that form it, although bedding is frequently visible. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. These types of sediments are typically formed during orogenic deformation; for example, the arkose detrital sedimentary rock found in fault troughs. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It consists of turbiditic sandstone (subgraywacke and arkose) interbedded with secondary siltstone, mudstone, tuff, volcaniclastic sedimentary rock, agglomerate, and conglomerate, which have all been metamorphosed to prehnitepumpellyite to blueschist facies. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. |
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