LUNAR GEOLOGY: The face of the Moon -- Stratigraphy of the lunar surface -- Stratigraphic and absolute age scales -- Lunar topography -- The larger lunar craters -- Central peaks and peak rings -- The large ringed basins -- Relation of ringed basins and smooth-plains-forming deposits -- Layering in the highlands -- Maria lava flows -- Rilles -- Wrinkle ridges -- Low albedo areas -- Swirls -- THE SURFACE OF THE MOON: The extreme upper surface -- The regolith -- Structure of the regolith -- Chemistry of the regolith -- "Age" of the soils -- Glasses -- Tektites -- The mega-regolith -- Craters and cratering rates -- Microcraters and micrometeorites -- Meteorite flux -- Solar and galactic cosmic rays -- Fossil track studies -- Cosmogenic radionuclides -- Rare gases -- Volatilization of elements at the lunar surface -- Lunar atmosphere -- Exobiology -- Organic geochemistry -- THE MARIA: The lavas -- Types of maria basalts -- Emerald green and orange glasses -- Composition of maria basalts -- The large cations -- The rare earth elements -- The europium anomaly -- The large, high-valency cations -- The ferromagnesian elements -- Sulfur and the chalcophile elements -- The siderophile elements -- Oxygen and carbon isotopes -- Cosmochemical implications of the trace element abundances -- Ages of maria basalts -- Sources of the maria basalts -- Impact melting -- Partial melting in the interior -- Cooling and crystallization of the lavas -- Fractional crystallization --

THE HIGHLANDS: The highland crust

Breccias

Impact-induced melting

Element migration in breccias

Sampling of the highland crust

Highland rock types

Experimental petrology and the source of the highland rock types

The orbital chemical data

Inter-element correlations

The chemical composition of the highlands

The ancient meteoritic component

Ages of the highland rocks

THE INTERIOR OF THE MOON: Radius, Density, and Moment of Inertia

Lunar Gravity and the Mascons

Lunar Seismicity

Structure of the Lunar Interior

Temperatures within the Moon

Lunar Magnetism

Origin of the Lunar Magnetic Field

THE ORIGIN AND EVOLUTION OF THE MOON: The New Moon

The Boundary Conditions from the Apollo Missions

Homogeneous Versus Heterogeneous Accretion

The Overall Composition of the Moon

Rare Earth Patterns in the Lunar Interior

Geochemical Evolution of the Moon

Lunar Origins

The Double Planet Hypothesis

Fission Hypothesis

Capture Hypotheses

The Solar Nebula.