Taruntius

D=57 km
Center: 6¡N, 47¡E
Count Area = 571 km^2

Density (@ 1km): 9000 ± 4400
Simone's Age: 3.8 ± 0.1
Fit density (@ 1km): 11600 ± 900
PF fit: excellent
Stoffler epoch: Early Imbrian

Age calculation notes:
Data is fit very well by the MPF. Used Melosh gravity scaling law.

USGS geology: 
Crater mapped as Copernican. Two regions - smooth and hummocky.

Wilhelms: 
Copernican

Floor material: 
Best guess is original.

Geology Observations: 
See ejecta, and a few brightish rays, mostly to south. Rim somewhat eroded - larger crater superposed in 11:00 position. Area of darker material - don't know if different aged unit or not - crater density doesn't appear very different. Wall has generally collapse making floor area small. Fractures on wall associated with collapse.  Small, low, weathered peak. 

SFD Observations: 
SFD is steep, but larger D do perhaps(?) become shallower. Small craters (< 1 km) dominated by class 3. Large craters dominated by classes 2 & 4. Degraded secondaries identified (up to ~ 1.1 km). Secondaries have SFD that corresponds to "primaries". Slope(Diff)=-4.7 ± 0.6 & Slope(sec)=-6.1 ± 1.7

Last Edited by MRK 1/9/2014