Core-Mantle Boundary Structures and Processes
نویسندگان
چکیده
The past two decades have witnessed tremendous progress in seismological, geodynamical, geomagnetic, and mineral physics efforts to quantify deep Earth processes. Our understanding of structures and processes in the lowermost mantle has advanced accordingly, and there is now widespread agreement that some form of major thermo-chemical boundary layer (TCBL) exists on the mantle side of the core-mantle boundary (CMB), extending at least several hundred kilometers upward into the lower mantle. Boundary layers play critical roles in heat transport and dominant length scales of thermal convection systems, so there is a concerted effort to understand the lowermost mantle boundary layer. The endmember conceptual models now being considered for the TCBL at the base of the mantle are reviewed here along with Book Title Book Series Copyright 2004 by the American Geophysical Union 10.1029/Series#LettersChapter#
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