title: Isotopic analysis of rare gases from stepwise heating of lunar fines and rocks.
abstract: Highlights of a first effort in sorting out rare gases in lunar material are solar wind rare gases in abundance; variable (20)Ne/(22)Ne but constant (21)Ne/ (22)Ne ratios in fractions of the trapped neon; cosmogenic rare gases similar to those found in meteorites, except for copious (131)Xe in one rock but not in another; at Tranquillity Base a rock 4.1 x 10(9) years old which reached the surface 35 to 65 million years ago, amid soil whose particles have typically been within a meter of the surface for 10(9) years or more.
authors.forename: J H
authors.initials: JH
authors.lastname: Reynolds
authors.forename: C M
authors.initials: CM
authors.lastname: Hohenberg
authors.forename: R S
authors.initials: RS
authors.lastname: Lewis
authors.forename: P K
authors.initials: PK
authors.lastname: Davis
authors.forename: W A
authors.initials: WA
authors.lastname: Kaiser