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@article{Lewis:2015:10.1306/12011414036,
author = {Lewis, MM and Jackson, CAL and Gawthorpe, RL},
doi = {10.1306/12011414036},
journal = {AAPG Bulletin},
pages = {985--1012},
title = {Early synrift reservoir development on the flanks of extensional forced folds: a seismic-scale outcrop analog from the Hadahid Fault System, Suez Rift, Egypt},
url = {http://dx.doi.org/10.1306/12011414036},
volume = {99},
year = {2015}
}
TY - JOUR
AB - Forced folds typically develop above the tips of propagating normal faults in rifts that contain thick, prerift salt or mudstone sequences. This structural style is associated with the deposition of wedge-shaped synrift deposits that thin and onlap towards monoclinal growth folds overlying the vertically restricted fault tips. Subtle stratigraphic traps may develop on the flanks of these folds although, due to limited seismic resolution and sparse well data, the architecture, thickness and distribution of early synrift reservoirs are difficult to predict. To improve our understanding of early synrift reservoir development on the flanks of forced folds, we focus on seismic-scale outcrop analogs along the Hadahid Fault System, Suez rift, Egypt. Our data indicate that forced folding dominated during early rifting and that the onset of folding was diachronous along-strike. Fluvial systems incised the rotating monocline limbs, leading to the formation of valley-like erosional relief along the base synrift unconformity. Reservoir-prone fluvial facies are only locally developed along the forced fold flank, with their distribution related to the degree of sediment bypass downdip into the adjacent basin. Early synrift relief not filled by fluvial strata was backfilled by transgressive, tidally influenced, reservoir-prone facies, with carbonates being locally developed in areas of low clastic sediment supply. Further extension and fault-tip propagation led to amplification of the forced folds, and deposition of shallow marine-to-shelf parasequences that became thinner towards the growing folds. Although displaying greater strike continuity than the underlying fluvial or tidal reservoirs, shoreface sandstone reservoirs amalgamate onto the flanks of the forced folds and may be absent towards the fold crest. This outcrop analog helps us better understand the sub-seismic stratigraphic architecture and facies distributions of early synrift reservoirs on the flanks of extensional f
AU - Lewis,MM
AU - Jackson,CAL
AU - Gawthorpe,RL
DO - 10.1306/12011414036
EP - 1012
PY - 2015///
SP - 985
TI - Early synrift reservoir development on the flanks of extensional forced folds: a seismic-scale outcrop analog from the Hadahid Fault System, Suez Rift, Egypt
T2 - AAPG Bulletin
UR - http://dx.doi.org/10.1306/12011414036
UR - http://archives.datapages.com/data/bulletns/2015/06jun/BLTN14036/BLTN14036.html?q=+titleStrip:forced++authorStrip:lewis
VL - 99
ER -