Structural Analysis of Half-Graben Growth Strata Geometries, Gulf of Corinth, Greece
MetadataShow full item record
The Peloponnese peninsula in mainland Greece is a highly faulted region due to the active rift in the Gulf of Corinth. The rift is relatively recent and contains highly preserved structures and sediments, making it an excellent area for structural and sedimentological syn-rift strata growth geometry analyses. Syn-rift sequences absent of growth strata geometries can be observed at several locations in the southern area of the Gulf of Corinth. The growth strata sequences are typically characterized by significant changes in dip and thickness. In this project, the locations visited in the Gulf of Corinth lack the conventional evidence of growth geometries, therefore, display a deficiency of typical characteristics of dip increase down-section and thickness increase towards a fault. This project focuses on growth strata deposit analysis and the syn-rift characterization issue when considering growth strata absent sequences, due to the syn-rift strata importance for petroleum exploration industry as a potential hydrocarbon reservoir area. The main challenge is the discrimination between syn-rift and post-rift packages. Previously, general mapping and field work data has led to inconclusive results; high quality structural analysis may provide new insight into the presence and characteristics of syn-rift growth strata. Analysis of the study area is accomplished using a combination of field observations, Light Detection and Ranging (LiDAR) data with photographs and photogrammetry data. The purpose of the additional photographs and LiDAR data are to collect detailed measurements of the bedding geometries and to assist in determining the absence of growth geometries in a number of selected half-grabens. The acquired LiDAR data were processed and input into Petrel EP Software Platform, used for detail structural analysis of the study areas. The detailed structural analysis results in the lack of growth geometries in syn-rift packages, suggesting new criteria requirement for a precise syn-rift strata identification, followed by several possible past geomorphology scenario propositions. Additionally, analogue quality assessment of Norwegian Continental Shelf resulted in a few areas exhibiting similar syn-rift features to GOC and proposing a possibility for lack of growth geometries as a global feature.
Master's thesis in Petroleum geosciences engineering.