Stratigraphic Architecture
and Evolution of a Meandering Slope Channel Complex, Capistrano Formation,
Bouroullec, Renaud1,
David, R. Pyles2, David, C. Jennette3, Mark Tomasso1
(1) The University of
Slope channel complexes are important
petroleum reservoirs in deep-water basins. Two Capistrano Formation exposures
located at
Each of the two exposures contains ten
channels that constructed a single channel complex. The two exposures are
laterally separated by 400 m of mudstone. The channel complexes cropping out
are 25 m thick, 1260 m wide at the southern exposure and 560 m at the northern
exposure. The channel facies and stratigraphic
architecture are similar at both exposures. The channel stacking pattern shows
lateral offset of the first eight channels, toward the north for the southern
exposure and toward the south for the northern exposure, followed by vertical
stacking of the last two channels for both exposures. The regional paleocurrent direction is to the northwest, but paleocurrent data for individual channels indicate an
anticlockwise rotation of the paleo-flow within
successive channels at the southern exposure and a clockwise rotation at the
northern exposure. The lithofacies data, the channel
stacking patterns and the paleocurrent data indicate
that the same channel complex is meandering and crops out twice along the beach
cliff.
The
AAPG Search and Discover Article #90063©2007 AAPG Annual Convention, Long Beach, California