Journal article icon

Journal article

Large Th-230-excesses in basalts produced by partial melting of spinel lherzolite

Abstract:

Excesses of 230Th over 238U in mid-ocean ridge basalts (MORB) require that the mantle source region preferentially retains U over Th during partial melting. Based on existing mineral-melt partitioning data, 230Th excesses are widely cited as evidence that partial melting beneath ridges begins within the garnet stability field, at pressures over 2.8 GPa. However, recent experimental and theoretical studies of U-Th partitioning show that melting in the presence of aluminous mantle clinopyroxene...

Expand abstract
Publication status:
Published

Actions


Access Document


Authors


Journal:
CHEMICAL GEOLOGY
Volume:
162
Issue:
2
Pages:
127-136
Publication date:
2000-01-04
DOI:
ISSN:
0009-2541
URN:
uuid:764cc3a2-ac56-4336-8aec-906f5b038aa2
Source identifiers:
163829
Local pid:
pubs:163829

Terms of use


Metrics


Views and Downloads






If you are the owner of this record, you can report an update to it here: Report update to this record

TO TOP