Geology Reference
In-Depth Information
(a)
(b)
Figure 5.12.
(a) Penitent rocks at Tungkillo, eastern Mt Lofty Ranges, South Australia. (b) Bowerman's
Nose, a curiously shaped assemblage of blocks on eastern Dartmoor, southwestern England.
5.4
TECTONIC AND STRUCTURAL FORMS
Traditionally, in the English-speaking world at least, the term structural has carried two different
geomorphological connotations. The phrase structural landform
sensu lato
, or used in a broad
sense, encompasses both tectonic landforms due wholly to crustal activities, and structural land-
forms
sensu stricto
, or in the narrow sense, which are due to the exploitation of crustal weaknesses
by external agencies of weathering and erosion. Tectonic forms are due to activities within the
