Quantifying heterogeneity in beach-shoreface complexes with changing tidal and fluvial influence

量化潮汐和河流影响下海滩-岸面复合体的异质性

• 批准号: 341789-2013
• 负责人: Dashtgard, Shahin
• 金额: $ 1.97万
• 依托单位: Simon Fraser University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2013
• 资助国家: 加拿大
• 起止时间: 2013-01-01 至 2014-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=527464
• 关键词: Quantifying; heterogeneity; beach; shoreface; complexes

Paleoenvironmental interpretations of sedimentary rocks deposited in marginal-marine settings have traditionally relied upon qualitative comparisons of sedimentological and ichnological characteristics to idealized analogs of wave-, tide-, and river-dominated (WTR) end-member environments. By contrast, the vast majority of the world's sedimentary rocks were deposited on coastlines that were affected by two or three depositional processes, and hence, end-member models cannot be applied. While a range of mixed influence models have been recognized, the continued subdivision of such environments will theoretically result in an infinite number of analogs. As such, it is necessary to move away from such qualitative analogs and move towards process-based models, quantitative datasets, and numerically based classification schemes.

传统上，沉积在边缘海相环境中的沉积岩的古环境解释依赖于沉积学和技术特征与波浪、潮汐和河流主导（WTR）端元环境的理想化类比的定性比较。相比之下，世界上绝大多数的沉积岩是在海岸线上沉积的，这些海岸线受到了两次或三次沉积过程的影响，因此，端元模型不能适用。虽然已经认识到一系列混合影响模型，但这种环境的持续细分理论上将导致无限数量的类似物。因此，有必要摆脱这种定性类比，转向基于过程的模型、定量数据集和基于数字的分类方案。