[232Th] Bulk = MT( 232Th)/(MCr + MMa) 5.34E-08 kg/kg 2 [K]Bulk = ([K]/[ 40K]) EMT( 40K)/(MCr + Ma) 2.86E-04 kg/kg 2 Parameter Amount Units Ref [232Th] Mantle Mars 2.80E-08 ([232Th] M/[U]M)Earth 4.00 5,6 ([U]M/[ 232Th] M)Earth 25% kg/kg F5 [U]Mantle Mars = [ 232Th] MM([U]M/[ 232Th] M)E 7.00E-09 kg/kg F4,6 [K]Mantle Mars 1.50E-04 kg/kg 2 ([40K]/[K]) Earth 1.20E-04 kg/kg 10 [40K] Mantle Mars = [K]MM([ 40K]/[K]) E 1.80E-08 kg/kg F8,9 MMantle Mars(U) = MMa[U]MM 3.35E+15 kg B19,F7 MMantle Mars( 232Th) = MMa[ 232Th] MM 1.34E+16 kg B19,F4 MMantle Mars( 40K) = MMa[ 40K] MM 8.62E+15 kg B19,F10 MCrust Mars(U) = MMM(U) 3.35E+15 kg 2 MCrust Mars( 232Th) = MMM( 232Th) 1.34E+16 kg 2 MCrust Mars( 40K) = MMM( 40K) 8.62E+15 kg 2 [U]Crust Mars = MCM(U)/MCr 1.43E-07 kg/kg F14,B18 [232Th] Crust Mars = MCM( 232Th)/MCr 5.72E-07 kg/kg F15,B18 [40K] Crust Mars = MCM( 40K)/MCr 3.68E-07 kg/kg F16,B18 MTotal(U) = MC(U) + MM(U) 6.71E+15 kg F14,11 MTotal( 232Th) = MC( 232Th) + MM( 232Th) 2.68E+16 kg F15,12 MTotal( 40K) = MC( 40K) + MM( 40K) 1.72E+16 kg F16,13 [235U]/[U] 0.72% kg/kg 4 MTotal( 235U) = MT(U)[ 235U]/[U] 4.83E+13 kg F23,20 [238U]/[U] 99.27% kg/kg 4 MTotal( 238U) = MT(U)[ 238U]/[U] 6.66E+15 kg F25,20 Table 3 - Current Radioisotope Inventories STERNBERG Craters and cracks 2023 ICC 51
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