Geology, Geochemistry, and Natural Abundances of the Rare Earth Elements

Sustainability of Rare Earth Resources

The Electronic Structure of the Lanthanides

Variable Valency

Group Trends

Solvento Complexes of the Lanthanide Ions

Lanthanides in Living Systems

Lanthanides: Coordination Chemistry

Organometallic Chemistry Fundamental Properties

Lanthanides: ‘‘Comparison to 3d Metals’’

Luminescence

Lanthanides: Luminescence Applications

Magnetism

The Divalent State in Solid Rare Earth Metal Halides

Lanthanide Halides

Lanthanide Oxide/Hydroxide Complexes

Lanthanide Alkoxides

Rare Earth Siloxides

Thiolates, Selenolates, and Tellurolates

Carboxylate

Lanthanide Complexes with Amino Acids

β-Diketonate

Rare Earth Borides, Carbides and Nitrides

Lanthanide Complexes with Multidentate Ligands

Alkyl

Aryls

Trivalent Chemistry: Cyclopentadienyl

Tetravalent Chemistry: Inorganic

Tetravalent Chemistry: Organometallic

Molecular Magnetic Materials

Near-Infrared Materials

Superconducting Materials

Metal–Organic Frameworks

Upconversion Nanoparticles for Bioimaging Applications

Oxide and Sulfide Nanomaterials

Rare Earth Metal Cluster Complexes

Organic Synthesis

Homogeneous Catalysis

Heterogeneous Catalysis

Supramolecular Chemistry: from Sensors and Imaging Agents to Functional Mononuclear and Polynuclear Self-Assembly Lanthanide Complexes

Endohedral Fullerenes

Lanthanide Shift Reagents

Lanthanides: Magnetic Resonance Imaging

Luminescent Bioprobes

Sensors for Lanthanides and Actinides

The Relief Canyon gold deposit in the Humboldt Range of western Nevada is a low-grade, high-tonnage orebody of Tertiary or younger age. The host rocks include limestones of the Triassic Cane Spring Formation, which are overlain by shales of the Triassic Grass Valley Formation. The rocks were folded and metamorphosed to greenschist grade during Jurassic and Cretaceous regional tectonic activity. Mesozoic thrusting may have occurred along the shale-limestone contact, but evidence has been obscured by later hydrothermal activity. The sedimentary rocks were nominally offset along several Late Tertiary normal faults related to uplift of the range.

Modern amphibians - the familiar frogs and salamanders of the Northern Hemisphere and the less well-known, elongate, and limbless caecilians of the Southern Hemisphere-appear as relatively minor components of the living fauna, although they actually outnumber the dominant mammals in terms of both numbers of species and individuals. In fact, the three modern amphibian groups are but relicts of a much larger radiation that occurred between 370 and 270 million years ago, when their ancestors dominated terrestrial and shallow water environments throughout the world. Of even greater significance, the early amphibians provided an evolutionary link between archaic fish and the ancestors of all more advanced terrestrial vertebrates: the reptiles, birds, and mammals. That is, they were our own <...>

The story of fishes through time is also the story of changing continents and climates, devastating mass extinctions and changing faunas and floras. The complete picture can be grasped only from a multifaceted approach, and this is why there are several sections here giving extra information for nonpalaeontologists. A glossary of complex or scientific terms is included in the back for ready reference. <...>