The Earth's Lower Mantle
Composition and Structure
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Beschreibung
This book presents the first overview of the composition and structure of the Earth’s lower mantle. The first part focuses on the study of lower-mantle minerals, identified as inclusions in diamonds from different regions of the world. Three associations are established among the lower-mantle minerals: ultramafic, mafic, and carbonatic. The carbonatic association is of particular interest because it characterizes the media of natural diamond formation. In turn, the second part analyzes the structure of the lower mantle, revealing its heterogeneous composition. It is based on the results of experiments demonstrating phase transitions in lower-mantle minerals, and on seismological data. Deep-seated earthquakes point to the presence within the lower mantle of numerous seismic boundaries caused by mineral structure transitions. In closing, the last part of the book compares observed data with experimental data, highlighting several discrepancies that indicate Earth may have a more complexplanetary history than previously assumed, and examining its primarily non-chondritic composition.
Presents the first comprehensive overview of the composition and structure of the Earth’s lower mantle
Summarizes geological, mineralogical, experimental and geophysical data on the Deep Earth
Broadens readers’ understanding and presents a compositional model of the lowermost mantle and geodynamic processes at the core/mantle boundary
Presents the first comprehensive overview of the composition and structure of the Earth’s lower mantle Summarizes geological, mineralogical, experimental and geophysical data on the Deep Earth Broadens readers’ understanding and presents a compositional model of the lowermost mantle and geodynamic processes at the core/mantle boundary Includes supplementary material: sn.pub/extras
Autor*in
Felix V. Kaminsky
Themen in »The Earth's Lower Mantle«
High-pressure minerals Earth structure Diamond Chondrite lower-mantle minerals