文档介绍：REVIEW
Main Types of Bedding
level bedding
ripple bedding
cross-bedding
graded bedding
laminae
plate
wedge
trough
Main Bedding Types
Bedding Shape
Different Stratigraphic
Break(from Roberts,1982)
diastem
formity
disconformity
unconformity
Zhu Zhicheng et al. [China University of Geosciences]
Strike and dip of a plane
Trend & plunge of a line
Pitch and pitch direction
Relationship between true dip() and
Apparent dip( or )
Equation:
b = atan[tan(a)cos(d)]
= apparent dip angle, a = true dip angle, d = angle between true and apparent dip direction.
a
b
d
APPARENT DIP ANGLE CALCULATION
NE
SE
NW
SW
0
90
270
180
Trend: S30W
Trend: 210
Bearing
Azimuth
Bearing and Azimuth
Bearing: a horizontal angle measured east or west of true north or south.
Azimuth: a horizontal angle measured clockwise from the true north.
Trend: the direction of a line in a horizontal plane,
commonly specified by its bearing or azimuth.
Structural Contour
marl
shale
sandstone
limestone
thin
limestone
Red
water
river
A-B SECTION
Red Water
River
LEGEND
Jianfeng
Jianfeng
conglomerate
mudstone
marl
limestone
shale
sandstone
aura