Deposition of laminated shale: A field and experimental study

Geo-Marine Letters - Tập 5 - Trang 3-9 - 1985
Daniel L. Carey1, David C. Roy1
1Boston College, Chestnut Hill

Tóm tắt

Intermittently laminated shale of the Jemtland Formation in Maine is characterized by thin lenticular silt segregations interlaced with argillaceous and organic material (including graptolites). This shale is thinly interbedded with nonlaminated shale, siltstone, and thicker turbidite graywacke beds. Experiments suggest that the intermittently laminated shale was deposited by silt/clay-laden currents and may have been part of an upward turbidite progression from parallel-laminated silt (>60% silt), through intermittently laminated mud (40 to 60% silt), to nonlaminated mud (20 to 40% silt). Intermittently laminated mud may be produced from silt/clay flows that are: decelerating at a constant silt content, losing silt at constant velocity; or both decelerating and losing silt.

Tài liệu tham khảo

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Geo-Marine Letters

Tập 5

3-9

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