title: Magma generation on Mars: amounts, rates, and comparisons with Earth, moon, and venus.
abstract: Total extrusive and intrusive magma generated on Mars over the last approximately 3.8 billion years is estimated at 654 x 10(6) cubic kilometers, or 0.17 cubic kilometers per year (km(3)/yr), substantially less than rates for Earth (26 to 34 km(3)/yr) and Venus (less than 20 km(3)/yr) but much more than for the Moon (0.025 km(3)/yr). When scaled to Earth's mass the martian rate is much smaller than that for Earth or Venus and slightly smaller than for the Moon.
authors.forename: R
authors.initials: R
authors.lastname: Greeley
authors.forename: B D
authors.initials: BD
authors.lastname: Schneid