Environmental Engineering Reference
In-Depth Information
A
B
C
D
E
F
FIGURE 12
Modern ichnology of the tidal flat complex south of Al Aryam Island (southern
Arabian Gulf, UAE). Scale bars
¼
1 cm. (A) Stranded Pleistocene beach ridges with abundant shells
of cerithid gastropods on a supratidal flat (sabkha). The two larger burrows were made by termites,
whereas the smaller one in between results from ant activities. (B) Upper intertidal sand flat with a
groove-like surface trace of the sand-dwelling crab
Scopimera crabricauda
and its pseudo-pellets.
(C) Soft mud surface at the margin of a lower intertidal pool with minute trails produced by fora-
minifers. (D) Firmground surface of a mud-bank in the lower intertidal with intense bioturbation by
worms. (E) Margin of a lower intertidal channel (cliff height
¼
approximately 0.3 m). The channel
floor shows abundant trackways of birds, whereas the bank acts as a stiff- to firmground and is
Search WWH ::
Custom Search