THE PRIMARY OBJECTIVE OF THIS WORK IS TO PRODUCE A USGS GEOLOGIC MAP AT 1:1 000 000 SCALE FROM 18.5 DEGREES W TO 9.5 DEGREES E AND 0 DEGREES N TO 16 DEGREES N WHICH INCLUDES THE PYROCLASTIC DARK MANTLE DEPOSITS (DMDS) IN SINUS AESTUUM RIMA BODE AND MARE VAPORUM. IN THIS NEW INVESTIGATION WE WILL USE MULTIPLE DATA SETS TO BETTER REFINE THE EXTENT OF PYROCLASTICS FOR THESE THREE DMDS MAP AND DETERMINE THE COMPOSITIONS OF THE MARE AND HIGHLANDS WITHIN OUR STUDY REGION PERFORM CRATER COUNTING TO ESTABLISH AGES EXPLORE THE GEOLOGIC SETTING AND HISTORY OF THE MAPPING REGION IDENTIFY AND MEASURE THE DIMENSIONS OF PLAUSIBLE SOURCE VENTS FOR THE DMDS AND ATTEMPT TO CHARACTERIZE THE ERUPTION(S) THAT EMPLACED EACH DMD. AN IMPROVED UNDERSTANDING OF THE DISTRIBUTION GEOLOGIC SETTING AND ERUPTIONS CONDITIONS THAT PRODUCED THE PYROCLASTIC DEPOSITS GAINED THROUGH STRATIGRAPHIC MORPHOLOGIC AND MINERALOGIC CHARACTERIZATION HAS THE POTENTIAL TO REVEAL IMPORTANT INFORMATION ABOUT THE THERMAL AND VOLCANIC HISTORY OF THE MOON. THERE ARE TWO TASKS FOR THIS INVESTIGATION: TASK 1: PRODUCE A U.S. GEOLOGICAL SURVEY (USGS) MAP AT 1:1 000 000 SCALE COVERING THE STUDY REGION THAT ENCOMPASSES THE THREE DMDS OF SINUS AESTUUM RIMA BODE AND MARE VAPORUM. THE GOAL OF TASK 1 IS TO MAP THE EXTENT AND DISTRIBUTION OF THE PYROCLASTIC DEPOSITS WITHIN EACH DMD THAT IS NEEDED FOR TASK 2. WE WILL ALSO MAP MARE AND HIGHLAND UNITS BASED UPON MORPHOLOGY TOPOGRAPHY AND COMPOSITION IDENTIFY AND MAP LINEAR FEATURES AND PERFORM CRATER COUNTING FOR AGE ASSESSMENT. TASK 2: BASED UPON THE MAPPING OF IRREGULAR CRATERS AND LINEAR FEATURES AS WELL AS THE AERIAL EXTENT OF THE DMDS IN TASK 1 WE WILL IDENTIFY PLAUSIBLE SOURCE VENTS AND CHARACTERIZE THE ERUPTIONS THAT EMPLACED THE DMDS. RESULTS INCLUDE CONSTRAINING THE STYLE OF VOLCANIC ERUPTION (UMBRELLA PLUME VS. FIRE FOUNTAIN) AND THE RELATIONSHIP BETWEEN VENT PHYSICAL PROPERTIES AND DMD EXTENT.
$590,947FY2020National Aeronautics and Space AdministrationNASA
Planetary Science Institute, Tucson AZ