Periglacial landforms
201
Figure 8.33. Convex and concave slopes and possibly relict slopes in Sierra de Javalambre, Teruel
Province, Iberian Range, NE Spain.
4. Fluvial landforms
The high-gradient, braided channels with a high bedload and large width-depth ratio
are the most common in periglacial environments. In summer, the high-discharge
flows produce significant mechanical erosion in the channel banks. The run-off waters
RELICT
PLANA TION SURFACE
cx B/S-U
cx B/S-U~
.........
"l
--~
,[.
~;.t.,(
uPPER i\ / SLOPES S-/)"
', .'
,,,,
ox B,s-~',.'e." t
,l~xa/S-M.\f// ~ I\ VY/\\
///
\i
1//
, \ ~"-~
,
9
/
I I \Y / #ooL~ '~ V/'s~oPEs\< IT~,ANGU~4,~. il r AcETs, \I
I
/
#
11
/ /,, o
~ J
"l I
/ /
~
~ ,i, T
# I
RELICT SLOPE and ' / \ \ l,
,
LOWER
SLOPES
. ",
, , ' l
'. '
l '
TERRACEFRAGMENT.,..__%~.I" }/"-"~'~
/
', ',,
/ / ,' ',, r , ,""''
','
'"
'
'
ut ba~~
~
tl/V i-r'l /:)l~/J
.,.
~
9
--.mr'(braided river with gravel bars)
Figure 8.34. Tripartite slopes in the southeast of Spitsbergen. R: fills in the upper part of the slope, G:
gullies dissecting the middle and lower part of the slope (Modified from Btidel, 1982, Figure 31).