Interlocking Spurs – A series of ridges projecting out on alternate sides of a valley and around which a river winds its course
To remember the meaning of the term Interlocking Spurs, use the following mnemonic:
Interlocking fingers remind us of interlocking spurs because that is exactly what interlocking spurs look like.
Interlocking slopes are convex (rounded) slopes that extend alternately from opposite sides of a valley, each one fitting into the "gap" between two similar slopes on the other side. They fit together rather like the teeth of a zip.
Interlocking spurs are created over vast periods of time by a river eroding the landscape in its upper course. The river winds and bends as it meets resistance from harder rock.
![](/images/user/base/Maths/Logarithms/Reference%20Tables/reference-log-table-1.4df6ee6.jpg)
![](/images/user/base/Maths/Logarithms/Reference%20Tables/reference-log-table-2.d516bb3.jpg)
![](/images/user/base/Maths/Logarithms/Reference%20Tables/reference-anti-log-table-1.b0b0513.jpg)
![](/images/user/base/Maths/Logarithms/Reference%20Tables/reference-anti-log-table-2.f89189d.jpg)