We utilized coherence, spectral decomposition, and seismic facies classification to study channel systems and depositional environments during the Pliocene epoch in the offshore area of southwestern Taiwan. The characteristics of channel systems, such as distribution, thickness, deposits, and evolution, in the Pliocene epoch were analyzed from horizon slice of the seismic volume. The results of coherence attribute show that faults in the Pliocene lie NEE-SWW, and the direction of channels is perpendicular to the faults. Channel distributions are tree-like form. Thickness of channel deposits was analyzed from spectral decomposition showing thicker thickness in the thalweg. The V-shape in the downstream of channels from seismic facies classification can be regarded as channel-filled deposits. Channel evolution from various horizon slices of coherence attributes suggests that the depositional environment is regression during the Pliocene epoch.
Presentation Date: Wednesday, September 18, 2019
Session Start Time: 1:50 PM
Presentation Time: 2:40 PM
Location: Poster Station 4
Presentation Type: Poster
