Content
The interactive computer program "Evolution of Mylonitic Microfabrics (EMM)" was created as a File MakerPro 3.0 application. The program comprises graphics, animations and explanations of various aspects of microfabric evolution. The program has several different levels between which the reader can readily move by clicking on the corresponding buttons. Information about special terms used in EMM can be obtained simply by clicking on the Glossary button in the upper right hand corner of the page.

The web version of this programm was assembled by Mark Jessell and any problems with the format are probably his fault. Mark is greatfully acknowledged for doing a great job.

Starting from the main MENU, the program is divided into five submenues: (1) Goals, (2) Content, (3) Overview, (4) Experiments and (5) Microfabric Evolution:

(1) Goals
presenting the principle goals and techniques applied in this experimental study (Goals).

(2) Content
listing the EMM computer program (Content)

(3) Overview
giving a complete listing of the different levels of the program and the paths by which these levels can be reached (Overview).

(4) Experiments
representing a series of norcamphor experiments which were carried out at different strain rate and temperature conditions:

  HT-LS:      High Temperature - Low Strain Rate
  HT-HS:     High Temperature - High Strain Rate
  IT-HS:       Intermediate Temperature - High Strain Rate
  LT-HS:      Low Temperature - High Strain Rate

The submenu Experiments contains information about norcamphor as a rock analogue material, the experimental configuration and the experimental CONDITIONS. The database and the description of the different experiments can be found in the individual subgroups (HT-LS, HT-HS, IT-HS, LT-HS)., These deal with the following aspects:

   - Animations and explanations of the microfabric evolution
   - Diagram of changes in area proportions of specific c-axis orientations
   - Diagram of strain dependent changes in the mechanism activities
   - Animation and explanation of the textural evolution
   - Animation and explanation of strain dependent changes in grain size
   - Particle orientations of grains and domains  (PAROR)
   - Surface orientations of grains and domains  (SURFOR)
   - Animation of the strain distribution pattern
   - Animation of the distribution of high strain zones

To compare microfabric elements from one experiment with those of another, click on buttons at the bottom of the page. This allows one to switch directly to the corresponding page of another experiment.
 

(5) Microfabric Evolution
This chapter contains the general evolution of TEXTURE and MICROSTRUCTURE. These are explained in detail and summarized in SYNTHESIS.

The TEXTURE subchapter deals with:

  - Textures at the different experimental conditions
  - Changes in obliquity of c-axis cross and single girdles with strain
  - Strain dependence of the opening angles of the c-axis cross girdles
  - C-axis rotation paths
  - Changes in c-axis inclinations
  - Changes in c-axis azimuths
  - Stabilities of c-axis orientations
  - Preservation of steady state textures

The following points are treated in the MICROSTRUCTURE subchapters (GRAIN/DOMAIN SIZE, SPO & LOCALIZATION) :

  - Temperature and strain rate dependent changes in grain size
  - Temperature and strain rate dependent changes in domain width
  - Evolution of grain SPO
  - Evolution of domain SPO
  - Strain distribution patterns
  - Occurrence of microshear zones
  - Relationship between microshear zones and microstructure
  - Formation of microshear zones
  - History of microshear zones
  - Rotation diagrams of microshear zones
  - Relationship between microshear zones and SPOs
  - General localization behavior

The SYNTHESIS summarizes the microfabric evolution to steady state on different scales.