1. The Tyrrhena-Malea Volcanic Province
Presented by Leon Manfredi
4/19/2008

2. Overview The Tyrrhena-Malea Volcanic Province
Covers over 2.1 million square kilometers
Contains the six oldest central vent volcanoes on Mars, which formed between 4.0 to 3.6 Ga
Modified by aeolian and paraglacial processes

3. Purpose of Research Determine boundary of volcanic province
Perform crater count to determine age of relevant surfaces

4. Determining Boundaries
Used visible and infrared images
Looked for edge of lava flows
Elevation data
Used profiles to determine boundary
Previous geological maps
Used previously determined contacts when unable to find visual or profile data

5. Images
MOC
THEMIS VIS

6. Elevation Data

8. Geological Maps

9. Crater Counting Methodology
Identified surface for dating based on volcano morphology
Measured all crater diameters in and the surface area of the defined area
Used crater size-frequency distribution method to calculate the age of the surface using the measured surface area and crater diameters

10. Crater Counting Results

11. Updated Boundaries

12. Summary
New boundaries for the Tyrrhena-Malea Volcanic Province were determined
Based on cater counts, age of province is estimated at Ga

13. Acknowledgements Dr. Ronald Greeley Dr. David Williams
Dr. Ruslan Kuzmin
Dr. Long Xiao