中国地质大学：《构造地质学》课程PPT教学课件（英文版）Lecture 25 tectonic modeling

TECTONIC MODELING Significance of tectonic modeling History of tectonic modeling Methods of tectonic modeling General procedure of tectonic modeling

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

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

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

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 20s oflast century reconstruction of shape Form 30s to 50s of last century: considering g Similari lty From 50s to 70s oflast century: quantitative physical modeling From 70s of last century to now: quantitative physical modeling methods are getting more and more perfect, numerical modeling develop very fast

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

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

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 ZXet al., 1992)

Vortex fracture system from brittle coating experiment (Zeng Z.X.et al., 1992)

① Nuclear 113(102 column 0 8)区 0 G76 0 56 400 Serial number of bubbles

Serial number of bubbles Nuclear column

十 十 +↓ Nuclear column ×.1⊥X红 )丈 lcm × Trajectories of principal strain

Trajectories of principal strain Nuclear column