REVIEW
RULES OF ‘VS’
Traces of dipping
layers that intersect
uneven ground or
‘topography’.
Left hand side,Map
view of layer in stream
valley,
Right hand side,Cross
section view of dipping
layer.
(after Marshak and
Mitra laboratory
manual.)
11
LECTURE 5
CONSTRUCTION OF
VERTICAL SECTION
CONSTRUCTION OF VERTICAL SECTION
1 Select the location of the section and draw a
section line (usually perpendicular to the strike
of the main structures),right-hand end is its
more easterly end
2 Draw a topographic profile along the line of
section,Determine the base line on the squared
paper and draw a vertical scale line at each end,
The base line usually locates at 1-1.5 cm lower
than the lowest point along the line.
3 Add the structural data to the topographic
profile,Data on either side of the section line
may be projected to the section,Note to use
apparent dip.
CONSTRUCTION OF VERTICAL
SECTION
4 Extrapolate the surface data downward into the
underground.
5 legend
5 Fill lithologic symbols to indicate different rock
units.Label the Stratigraphic symbols,
6 Color the section and the legend (use the
chromatogram of strata)
7 Title,horizontal scale,orientation of the section
Chromatogram of Strata
Quarternary
Neogene
Paleogene
Cretaceous
Jurassic
Triassic
Permian
Carboniferou
Devonian
Silurian
Ordovician
Cambrian
Sinian
Mesoproterozoic
Paleoproterozoic
Archaean
marl
shale
sandstone
limestone
thin
limestone
Re
d
A-B SECTION
Red Water
River
LEGEND
Jianfeng
Jianfeng
conglomerate
mudstone
marl
limestone
shale
sandstone
au
ra