Geography Reference
In-Depth Information
Age in
years
Sediment
characteristics
Geomorphic
activity
Vegetation
cover
Climatic
interpretation
Incision of
torrente gully
Reduced
by humans
None present
Moist and warm
12,000
Fluvial and colluvial
gravel and sand
Hillslope erosion;
fan deposition
Dry and cold;
strongly seasonal
Low (steppe)
24,000
Palaeosol developed
in loess and sand
Soil formation and
landscape stability
Erosion of material
from hillsides;
deposition of alluvial
fans
High (woodland)
Moist and warm
60,000
Mainly stratified
fluvial (torrente)
gravel
Mainly dry and cool;
strongly seasonal
Mainly low
115,000
Palaeosol
Landscape stability
High
Moist and warm
125,000
Mainly sand and
gravel; marine shells
present
Beach deposition
(in part)
High
Moist and warm
130,000
Cemented sand
with dune bedding
(aeolianite)
Aeolian deposition
of sand dunes
Dry and warm;
on-shore winds
Low
21. A fi eld section through Quaternary deposits on the north coast of Mallorca: the main sedimentary units indicated on
the photograph are described and interpreted in terms of changing geomorphic processes, vegetation cover, and climatic
change
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