TY - JOUR
T1 - Experimental generation of cordierite-or garnet-bearing granitic liquids from a pelitic composition
AU - Green, T. H.
PY - 1976
Y1 - 1976
N2 - High-pressure experimental melting studies on a pelitic composition with 2 and 5 percent by weight of added water demonstrate that cordierite, quartz, biotite, sillimanite, and plagioclase are important residual phases coexisting with granitic liquid at 4 kb and are joined by garnet at 7 kb. At 10 kb, garnet quartz, biotite, sillimanite, and plagioclase constitute the residuum coexisting with granitic liquid. Compositions of residual phases and their Mg-Fe partition relationships compare closely with phases from cordierite- and garnet-bearing granitic rocks in eastern Australia and strongly support geochemical arguments that this particular granitic suite is derived by partial melting of pelitic sediments. Thus, the cordierite-bearing granitic rocks were probably derived by partial melting of pelite at >25-km depth, whereas the garnet-bearing granites were derived at ≥25-km depth.
AB - High-pressure experimental melting studies on a pelitic composition with 2 and 5 percent by weight of added water demonstrate that cordierite, quartz, biotite, sillimanite, and plagioclase are important residual phases coexisting with granitic liquid at 4 kb and are joined by garnet at 7 kb. At 10 kb, garnet quartz, biotite, sillimanite, and plagioclase constitute the residuum coexisting with granitic liquid. Compositions of residual phases and their Mg-Fe partition relationships compare closely with phases from cordierite- and garnet-bearing granitic rocks in eastern Australia and strongly support geochemical arguments that this particular granitic suite is derived by partial melting of pelitic sediments. Thus, the cordierite-bearing granitic rocks were probably derived by partial melting of pelite at >25-km depth, whereas the garnet-bearing granites were derived at ≥25-km depth.
UR - http://www.scopus.com/inward/record.url?scp=0003055836&partnerID=8YFLogxK
U2 - 10.1130/0091-7613(1976)4<85:EGOCGG>2.0.CO;2
DO - 10.1130/0091-7613(1976)4<85:EGOCGG>2.0.CO;2
M3 - Article
SN - 0091-7613
VL - 4
SP - 85
EP - 88
JO - Geology
JF - Geology
IS - 2
ER -