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Figure 2. Eight sandy systems (>60% sand) are recognized in the deep-marine Ainsa basin, containing 24 sandbodies or channelized submarine fans, that were deposited in various deep-marine settings, which from the oldest are: (1) Fosado (two sandbodies)—lower-slope erosional channels; (2) Los Molinos (three sandbodies)—lower-slope erosional channels; (3) Arro (three sandbodies)—canyon/base-of-slope channel system; (4) Gerbe (two sandbodies)—canyon/lower-slope erosional channels; (5) Banaston (six sandbodies)—base-of-slope erosional channel and proximal basin-floor confined/channel system, but previously interpreted as a canyon system; (6) Ainsa (three sandbodies)—lower-slope erosional channels and proximal basin-floor channelized fans; (7) Morillo (three sandbodies)—base-of-slope erosional channels and proximal basin-floor confined/channel system, but previously interpreted as a canyon system canyon/base-of-slope erosional channel system; and (8) Guaso (two sandbodies)—structurally-confined, low-gradient, clastic ramp. For the Banaston, Ainsa, and Morillo systems, the base-of-slope appears to have coincided broadly with the present-day Rio Cinca and Mediano reservoir.
Map compiled from detailed maps of individual systems with best-fit and, therefore, not accurate for topographic maps or aerial photographs.
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