透鏡狀層理

透鏡狀層理（英語：Lenticular bedding）是一種沉積紋理，由泥砂交替層組成。其中砂層較薄呈透鏡狀，屬高水流速沉積物。厚層泥層屬懸浮沉積物，在靜水中沉澱于沙層的頂部^[1]^[2]。透鏡狀層理代表高能環境沉積，例如潮間帶和潮上帶。透鏡狀層理和雙流向層理之區分在泥砂交替層的相對厚度。前者泥層厚，後者砂層厚。地質學家使用透鏡狀層理來證明潮汐節律、潮流和退潮的依據^[3]。

參考文獻

^ Terwindt, J. H. J., and Breusers, H. H. C. (1971). "Experiments on the origin of flaser, lenticular and sand-clay alternating bedding". Sedimentology. 19: 85–98.
^ Reineck, H. (1967). "Layered sediments of tidal flats, beaches, and shelf bottoms of the North Sea". Estuaries. 83: 191–206.
^ Reineck, H.; Wunderlich, F. (1968). "Classification and origin of flaser and lenticular bedding". Sedimentology. 11 (1–2): 99–104. doi:10.1111/j.1365-3091.1968.tb00843.x.

[”Terwindt”-1] Terwindt, J. H. J., and Breusers, H. H. C. (1971). "Experiments on the origin of flaser, lenticular and sand-clay alternating bedding". Sedimentology. 19: 85–98.

[”Reineck”-2] Reineck, H. (1967). "Layered sediments of tidal flats, beaches, and shelf bottoms of the North Sea". Estuaries. 83: 191–206.

[”Reineck1”-3] Reineck, H.; Wunderlich, F. (1968). "Classification and origin of flaser and lenticular bedding". Sedimentology. 11 (1–2): 99–104. doi:10.1111/j.1365-3091.1968.tb00843.x.

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