Continental margin sedimentation: evolution of the seismic sequence stratigraphic model

大陆边缘沉积：地震层序地层模型的演化

• 批准号: 314089-2010
• 负责人: Mosher, David
• 金额: $ 1.46万
• 依托单位: Dalhousie University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2011
• 资助国家: 加拿大
• 起止时间: 2011-01-01 至 2012-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=481412
• 关键词: Continental; margin; sedimentation; evolution; seismic

Passive continental margin sedimentation in deep and ultra deep water consists of inter-twined complexities in processes that include sediment supply and tectonic and sea level forcing functions, as considered in conventional sequence stratigraphic models, but also processes such as sediment reworking by deep ocean currents and sediment mass-failures at scales that have heretofore not been accounted. Lack of recognition of these latter sedimentation processes led to development of sequence stratigraphic models, vital to offshore hydrocarbon exploration, that fail to accurately capture deep water sediment distribution patterns. Canyon formation and large scale erosional unconformities further complicate the predictive capability of these models.

深水和超深水被动大陆边缘沉积过程错综复杂，包括泥沙供应、构造和海平面强迫作用（如传统层序地层学模型所考虑的），但也包括深海洋流对沉积物的改造和迄今尚未考虑的规模上的沉积物团块破坏等过程。由于缺乏对后一种沉积过程的认识，导致了对海上油气勘探至关重要的层序地层模型的发展，这些模型不能准确地捕捉深水沉积物的分布模式。峡谷的形成和大规模的侵蚀不整合进一步使这些模式的预测能力复杂化。