Geoscience Reference
In-Depth Information
(a)
(b)
(c)
Figure 13.27
(a) Flash flood deposits of the Triassic Burghead Beds on the Moray coast, Scotland. (b) Section in a modern
ephemeral stream channel-fill, northern Kenya, showing couplets of horizontal laminae. (c) Part-desiccated, thick, mud drape in
a modern ephemeral sand bed stream channel, northern Kenya, laid down in the last stages of recent flood flow.
3
2
Boulder
1
Bedrock
0
0
5
10
15
20
25
30
35
40
45
50
55
60
Distance (m)
Go (granules)
Ss
Gm
G
Fl
Colluvial
Go (pebbles)
Sp
Figure 13.28
Alluvial architecture of a mid-channel bar in the lower reaches of the gravel bed Nahal Zin, Arava, Israel, revealed
by cross-channel trenching. Go, openwork gravel; Gm, matrix-supported gravel; G, framework-clast supported gravel; Sp, pebbly
medium to coarse sand; Ss, medium to coarse sand; Fl, interbedded fine sand and mud (after Hassan, Marren and Schwartz, 2009).
