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feldspathic graywacke
释义
feldspathic graywacke
feldspathic graywacke
[
fel′spath·ik ′grā‚wak·ə
]
(petrology)
Sandstone containing less than 75% quartz and chert and 15-75% detrital clay matrix, and having feldspar grains in greater abundance than rock fragments. Also known as arkosic wacke; high-rank graywacke.
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更新时间:2026/7/12 6:57:58