They observed too a vertical thin sand dike that intrudes a deposit of interbedded silty clay and silty sand in the South gully (Fig.
Sand dikes and diapirs were identified at several levels of the stratigraphic succession of the lacustrine sediments related to RA-2 rock avalanches, particularly in the El Mono creek (Fig.
In general, these sand dikes have irregular form, from 1m to 4 m thick and up to 4 m high.
The thickness of the sand dikes decreases toward the East of the El Mono gully, where the thickest sand dikes (less than 0,1m wide) were found.
Even through, sand dikes are broadly spread out in Holocene lake sediments related to RA-2 rock avalanche, the most spectacular structures are found along the El Mono gully.
Substantial erosion has also occurred farther west on the bayside, notably at the 1943 sand dike and near Little Bay.
To improve tidal flushing and to straighten the meandering navigation channel, a sand dike was constructed on the bayside of the inlet in 1943 near the south end of Island Beach State Park, which provided a deeper direct channel connecting the bay and ocean (Figure 2) (Seabergh et al.
Strong current flow on the bayside of the inlet is actively eroding the sand dike and transporting the sediment northward toward Oyster Creek Channel.
The south channel, which has shifted [sim]90-100 m south of the inlet during the 1990s, meanders northward along the sand dike (Figure 2).
Reconnaissance along major streams in Shelby County, Tennessee, revealed earthquake-induced sand dikes in cut banks of the Wolf and Loosahatchie rivers.
The sand blows were fed by numerous vertical to shallow dipping sand dikes [less than]1 cm to 20 cm thick.
However, during storms when the Santa Ana River flow rises to a rate above 500 cfs (1,000 acre-ft per day) the temporary sand dikes
within the channel are washed out and good quality storm flows proceed unimpeded to the ocean.