Insights into the 3d geometry of thrust belts using x ray tomography of sandbox experiments
Download
1 / 17

Insights into the 3D Geometry of Thrust Belts using x-ray Tomography of Sandbox Experiments - PowerPoint PPT Presentation


  • 81 Views
  • Uploaded on

Insights into the 3D Geometry of Thrust Belts using x-ray Tomography of Sandbox Experiments. Jaime Toro West Virginia University. The Data. A stack of 100 x-ray images through the deformed sandbox Acquired at IFP in Rueil-Malmaison, France Also available are slices at intermediate stages.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about ' Insights into the 3D Geometry of Thrust Belts using x-ray Tomography of Sandbox Experiments' - penney


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
Insights into the 3d geometry of thrust belts using x ray tomography of sandbox experiments

Insights into the 3D Geometry of Thrust Belts using x-ray Tomography of Sandbox Experiments

Jaime Toro

West Virginia University


The data
The Data Tomography of Sandbox Experiments

  • A stack of 100 x-ray images through the deformed sandbox

  • Acquired at IFP in Rueil-Malmaison, France

  • Also available are slices at intermediate stages


Goals
Goals Tomography of Sandbox Experiments

  • Understand the relationship between maps and cross sections

  • Explore the 3D geometry of thrust faults

  • Think about how shortening is accommodated in different portions of a thrust-belt


Context
Context Tomography of Sandbox Experiments

  • After discussing Thrust Systems

  • After doing conventional sandbox experiments

  • After some practice with simple cross sections

  • Before any real field mapping


Lab exercise

Vertical Slice Tomography of Sandbox Experiments

(Cross section)

Lab Exercise

Horizontal Slice though the model

(Map View)

Vertical Slice

(Cross section)


Activities 1 interpret the cross sections
Activities 1: Tomography of Sandbox ExperimentsInterpret the Cross Sections

1. Color the two cross sections.

2. Highlight the faults in red.  


Activities 2 make a geological map
Activities 2: Tomography of Sandbox ExperimentsMake a Geological Map

On overlay paper:

  • 1. Color the stratigraphic units on the map. 

  • 2. Draw contacts

  • 3. Draw faults with appropriate symbols

    4. Anticline and syncline axes.

  • 5. Strike and dip symbols where possible.


The maps
The Maps Tomography of Sandbox Experiments


Activities 3 fault linkage
Activities 3: Fault linkage Tomography of Sandbox Experiments

  • Label all the faults on the map from west to east using A, B, C, etc.

  • Put the same fault labels on the cross sections.

  • Discuss how shortening is partitioned among the faults


Fault linkage

E Tomography of Sandbox Experiments

Fault Linkage

H

A

G

E

A

H

C

D

F

B

D

B

E

H


Activity 3 mystery sections
Activity 3-Mystery sections Tomography of Sandbox Experiments

  • Make a new cross section on the basis of your map


Other insights basement structure
Other Insights- Basement Structure Tomography of Sandbox Experiments

Thin cover at north end

Thick cover at south end


Other insights deformation sequence
Other Insights: Tomography of Sandbox ExperimentsDeformation Sequence

South End


Deformation movie
Deformation Movie Tomography of Sandbox Experiments

South End (A-A’)


Deformation sequence
Deformation Sequence Tomography of Sandbox Experiments

Mystery section- middle slice

Final State


Other insights critical wedge taper
Other Insights- Critical Wedge Taper Tomography of Sandbox Experiments


Conclusion
Conclusion Tomography of Sandbox Experiments

  • 3D Sandbox models are powerful tools for developing intuition about complex structures both in terms of geometry and kinematics.


ad