Tempered indentation

Environments ofTerrigenous/Siliciclastic Sedimentation That Are Associated with Mouths of Large Rivers 2,5,1,1,2,1 Estuaries An estuary is a drowned mouth of a river valley forming a funnel-shaped coastal indentation in which seawater can circulate and mix with river freshwater. Estuaries form where the discharged fluvial sedimentary load is small (<16 mg/1), subsidence is greater than sediment accumulation, and in macrotidal zones. Most of the estuaries are located in humid temperate climatic zones where extensive vegetation effectively restricts erosion and riverine sediment transport (Friedman and Sanders, 1978). 

Figure 8.6 Side views of the cone cracks under ioad in anneaied and thermaiiy tempered soda-iime-siiica giass formed under a 2.5-mm-radius steei indenter. Note that the skirt of the cone crack in the anneaied giass makes a significantiy iarger angie with the...

Figure 8.20 Side views of the crack pattern in a thermaiiy tempered giass under a Vickers indenter during quasi-static loading-unioading. A fuii-penny median crack appears in frame 1 and breaks through to the surface on unloading (frame 3). As load decreases,...

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