Loading...
Channel-lobe transition zone stratigraphic architecture and supercritical-flow bedforms, Cretaceous Point Loma formation, California
Saifudin, Luthfi
Saifudin, Luthfi
Citations
Altmetric:
Advisor
Editor
Date
Date Issued
2024
Date Submitted
Collections
Research Projects
Organizational Units
Journal Issue
Embargo Expires
2025-05-26
Abstract
Submarine channel-fan deposits are important archives of Earth’s history and serve as the record of turbidity current events that transfer large amounts of terrestrial sediment and carbon into the ocean. The geomorphology, depositional processes, and facies architecture change significantly along the submarinefan depositional profile, particularly at the channel-lobe-transition zone (CLTZ). However, few studies have documented detailed facies architecture and associated sedimentary structures in the CLTZ, which are important for paleoenvironmental interpretations and morphometric information essential to
reconstructing sediment transport dynamics in ancient successions.
Excellent outcrops from ancient CLTZ deposits of the Upper Cretaceous Point Loma Fm are exposed at Sunset Cliffs, San Diego, California, which constrain the overall facies architecture, grain-size distribution, and three-dimensional geometry of sedimentary structures. The Point Loma Fm shows an abundance of supercritical-flow bedforms (e.g.,cyclic steps) exposed in three dimensions, enabling the mapping of key surfaces and facies trends necessary for creating predictive models of these deposits. Characterizing the detailed facies architecture and bedform geometry for CLTZ deposits enables a better
understanding of the sediment transport dynamics and enhanced prediction of reservoir properties for comparable subsurface deposits that form hydrocarbon reservoirs and potential carbon dioxide storage.
Associated Publications
Rights
Copyright of the original work is retained by the author.