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- Flaser beds are a sedimentary, bi-directional, bedding pattern created when a sediment is exposed to intermittent flows, leading to alternating sand and mud layers. While flaser beds typically form in tidal environments, they can (rarely) form in fluvial conditions - on point bars or in ephemeral streams. Individual sand ripples are created, which are later infilled by mud during quieter flow periods. These mud drapes are typically a minor constituent of the deposit; they can consolidate within three hours, protecting the underlying layer from erosion. Flaser bedding typically forms in high-energy environments. In contrast to lenticular bedding which largely consists of mud relative to small amounts of sand, flaser bedding is dominated by sand with small amounts of mud interspersed. (en)
- 雙流向層理（英語：Flaser beds）是一種沉積紋理、在間歇性水流沉積環境，造成的交替的沙泥層。例如在潮汐環境中，當水流強時，帶來的沉積物多爲砂質，並會形成沙波紋。當水流弱時，帶來的沉積物多爲泥質，並填充在沙波紋上[。雙流向層理也可以但很少在河流中形成 – 例如在點壩。 雙流向層理的泥質物較少，通常次要成分。 但它們可以在三個小時內鞏固，保護下面的層理免受侵蝕 。雙流向層理通常在高能環境中形成，但濁流沉積中也有被報道（Rebesco，2014 年）。與透鏡狀層理相比，雙流向層理以沙子為主。而透鏡狀層理主要由泥質組成的。 (zh)
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- 雙流向層理（英語：Flaser beds）是一種沉積紋理、在間歇性水流沉積環境，造成的交替的沙泥層。例如在潮汐環境中，當水流強時，帶來的沉積物多爲砂質，並會形成沙波紋。當水流弱時，帶來的沉積物多爲泥質，並填充在沙波紋上[。雙流向層理也可以但很少在河流中形成 – 例如在點壩。 雙流向層理的泥質物較少，通常次要成分。 但它們可以在三個小時內鞏固，保護下面的層理免受侵蝕 。雙流向層理通常在高能環境中形成，但濁流沉積中也有被報道（Rebesco，2014 年）。與透鏡狀層理相比，雙流向層理以沙子為主。而透鏡狀層理主要由泥質組成的。 (zh)
- Flaser beds are a sedimentary, bi-directional, bedding pattern created when a sediment is exposed to intermittent flows, leading to alternating sand and mud layers. While flaser beds typically form in tidal environments, they can (rarely) form in fluvial conditions - on point bars or in ephemeral streams. Individual sand ripples are created, which are later infilled by mud during quieter flow periods. These mud drapes are typically a minor constituent of the deposit; they can consolidate within three hours, protecting the underlying layer from erosion. Flaser bedding typically forms in high-energy environments. (en)
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- Flaser bed (en)
- 雙流向層理 (zh)
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