|Climbing ripples in the Brazos river bed at low river level. Hover your mouse over the image to reveal the climbing ripple structures|
These structures are often regarded as HCS, Hummocky Cross Stratification,
(see Yancey, Hansen) but are all actually climbing ripples.
|Drawing of the same climbing ripples. Near the top the current direction changes about 150 degrees (measured on the outcrop) in the upslope, upwash direction|
|Climbing ripples at La Sierrita (Mexico) in the upper part
of the K/T event beds. The dominant current direction is SE, which is
both the downslope direction and backwash direction of tsunami surges.
It is expected that in that direction most of the tsunami deposit will
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