Present is certainly a key to the past


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Present is certainly a key to the past, but it is not a master key that can open ALL locks. Huttonian uniformatarianism can be true only at a given time span, albeit of a short spell, but not for all time of the earth's history since at various times the variables have changed gradually. A master key at a given time will be the MASTER only for that period or moment of time and the lock levers change their combinations by themselves so that the master key has got to be cut and hammered down to newer and newer grooves to fit the newer combination of levers that emerges. -Author
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If you happen to see this graphic against any of the links given, it implies that the animation file as a MOV plugin is not available at the URL given or has moved to another URL whose address as yet is not known or cannot be downloaded in less than 10 minutes on 56 kbps modem(in excess of 2048 K). This indicates that the preview on this page is available.	Animations in structural geology are generally made using modeling techniques based on known laws that govern natural tectonic deformation under different regimes and a set of variables. As natural tectonic deformations are complex, sometimes finite element techniques are used. Though animations can be grasped by students very easily, actually making an animation is a task that is related to research in structural geology to simulate a natuaral deformation structure. Understanding the physical processes that give rise to deformation structures is a must and extensive theoretical backgound in applied mechanics such as fluid dynamics is a pre-requisite and a sound knowledge of applied mathematics is expected. The animation to the left on rotational normal listric faults is built from 16 frames out of 57 taken from the shockwave flash by Declan G De Paor. Prof Declan G De Paor is a pioneer in the field of computer simulations in structural geology. He has contributed significantly by making courses on CD ROM and a large number of animations. You may click here to see the evaluation software (particularly animations) prepared by him and order for the classroom purpose or as a single or multiple user or as a member licensee if you think that the evaluation copy satisfies you and fulfills your needs. The animations are prepared using Shockwave Flash of Macromedia Inc.
*Here below are the animation files in the area of structural geology. This is an assortment of files and not quite categorized.* Within this web or its sub webs and other websites 1. Simple shear of randomly oriented ellipses with variable axial ratios in 2D up to a maximum value of shear strain equaling 6. 2. Tectonic Stylolites development by pressure solution or solution transfer and deposition (Durney 1972, Rutter 1976) 3. Antitaxial Growth of mineral fibres in veins, boudin gaps, deformed oolites etc (Durney and Ramsay 1973) 4. Syntaxial Growth of mineral fibres in veins or any gaps under P-T conditions similar to those of prehnite-pumpeyllite subfacies of zeolite facies (Ref same as under 3 above) 5. Reverse fault animation 6. This WEB name with background of pull apart structures from Untala granite, E Rajasthan, India. 7. Burgers' Edge Dislocation 8. Burgers' Screw Dislocation 9. Continental Drift built with frames taken from Encarta Encyclopaedia (No wav file, only GIF animated). For wav file buy the author's 600 MB software being given at the exact price of CD, copying on it and postage and handling for Rs. 100 only or US $ 5=00 for handling and shipping. For mode of payment, click here to see. 10. Simulation of Dynamic Recrystallization 11. Animation of Edge and Screw Dislocation 13. Animation of Fracture Friction 14. Sigmoidal extension veins with progressive simple shear 15. Animation of Low grade fabric development 16. Animation of Medium Grade Fabric Development 17. Animation of Porphyroblast Rotation through 540 degrees 18. Animation Pure shear deformation up to a maximum shortening of 76 per cent of randomly oriented ellipses and with variable axial ratios (but within a limited range) 19. Animation of Pure shear deformation of lines of variable orientations with respect to the negative and positive extensional areas of successive incremental and finite strain ellipses. 20. Animation of pure shear deformation of points or very small circles to show the hyperbolic paths taken by the points of the displacement field. 21. Development of pressure fringes or strain fringes either side of a porphyroblast as a result of pure shear increments. 22. Animation of static recrystallization during metamorphism giving rise to progressively increasing grain size. 23. Animation of deformation of randomly oriented elliptical objects with variable axial ratios within a narrow zone of homogeneous simple shear 24. Animation of deformation of randomly oriented lines by progressive homogeneous simple shear. 25. Animation of development of snowball porphyroblasts by progressive simple shear. 26. Geological Strain Analysis module animation with array of sigmoidal extension veins in the background. 28. Animation of deformation of trilobite population by homogeneous simple shear up to a maximum shear strain amounting to 6.0 29. Animation of rotation of a garnet 30. Animation of intersection of two planes in stereographic projection 31. Computer simulation of buckling 32. Computer simulation of superimposed folding of type 3 giving rise to hook shaped outcrop pattern 33. Animation of simultaneous pure and simple deformation of brachiopod fossils 34. Animation of the title of Faults and Faulting module with the photograph of normal listric faults in the background. 35. Animation of normal fault 36. Thrust Duplex animation 38. Thrust Fault Bend Fold Animation 39. Thrust Growth Strata Animation 40. Thrust Variable Growth Strata Animation 41. Blind Fault Animation 42. Subduction Rifting animation built from frames taken from Encarta Encyclopaedia 43. Simple animation of plate tectonics 44. Animations and simulations on Salt Tectonics 45. Phase Diagram Movies 46. Plate Tectonics Animations of different kinds 47. MOV file of "millipede" porphyroblast structures 48. Computer simulation of Garnet Growth in Metamorphic Terrains 49. MOV file of antitaxial growth 50. MOV file of Burgers' Edge Dislocation 51. MOV file of Burgers' Screw Dislocation 52.MOV file of edge screw glide 53. MOV file of Fracture Friction 54. MOV file of low grade fabric development 55. MOV file of medium grade fabric development 56. MOV file of porphyroclast movement and rotation 57. MOV file of Dynamic Recrystallization 58. MOV file of Static Recrystallization 59. MOV file of Tectonic Stylolites Development 60. MOV file of syntaxial growth 61. Stereographic animation of projection of a plane 62. Symmetric diapir animation : MOV file by Guglielmo 63.Tips on using under 62. 64. Coupling above and below a salt layer animation by Guglielmo 65. Asymmetric Active Diapir animation by Guglielmo as a MOV file 66. Shear Zone gradient strain circles by R Holcombe There are a large number of aimations done using OCE Elle by Monash University some of which are connected in the animation gallery. Other sites are Cornell, Purdue, and Boston. This animation page NEEDS TO BE REVISED.
Vasudhaiva Kutumbakam ! ( The whole world is but one family !- in Sanskrit from Rigveda)
Earth, mother of all, hail !