TECTONIC MODELING
? Significance of tectonic modeling
? History of tectonic modeling
? Methods of tectonic modeling
? General procedure of tectonic modeling
Concept
Tectonic modeling is the experimental
methods and or the experimental
processes by which the geometrical
and physical characteristics of
geological bodies are reconstructed,
their formation,evolution and
mechanism are analyzed.
TASK OF TECTONIC MODELING
? Searching the history
? Understanding the present
? Forecast the future
SIGNIFICANCE OF TECTONIC
MODELING
? Overcome the difficulty of the geological time
scale
? Overcome the difficulty of the limitation of
human direct observation
? Overcome the difficulty of the higher nonlinear
of the tectonic processes
? Be helpful to the need for higher output with
fewer investment
HISTORY OF TECTONIC
MODELING
? From the birth of geology to 20’s of last century,
reconstruction of shape
? Form 30’s to 50’s of last century,considering
similarity
? From 50’s to 70’s of last century,quantitative
physical modeling
? From 70’s of last century to now,quantitative
physical modeling methods are getting more and
more perfect,numerical modeling develop very
fast
Tectonic Modeling Methods
? Physical Modeling, Photoelasticity,Grid
method with small deformation,Grid method
with large deformation, In-plane moire
method,Shadow moire method,Bubble
method,Brittle-coating method,Sand box,
holographic interference method
? Mathematic modeling,Analytic method,
Finite difference method,Finite element
method,Boundary element method
Modeling methods in CUG
? Various physical modeling methods
? Numerical modeling methods—— MARC
and GNF software
? Software for structural geology,STRUCKIT
? Software-3DCAVF for curvature analysis and
3D visibility of structural surface
Vortex fracture system
from brittle coating
experiment
(Zeng Z.X.et al.,1992)
Serial number of bubbles
Nuclear
column
Trajectories of principal strain
Nuclear
column
Trajectories of principal strain from
bubble method
A Isochromatic fringe pattern
in photoelastic model of the
semi-infinite plate loading a
concentrated force
(after Zeng Zuoxun et al.,1992)
B Rib and plume mark
α
α
'
'
δ
Plane Polarization
polarizer
model
polarization
analyzer
light
Circle Polarization
Hmodelpolarizer
polarization
analyzer
light