TY - JOUR
T1 - Composition and heat generation of the Precambrian crust in New Mexico
AU - Condie, Kent C.
AU - Brookins, Douglas G.
PY - 1980
Y1 - 1980
N2 - Compared to average Precambrian shield, the average Precambrian terrane in New Mexico contains more Si, K, Rb, U and REE and less Fe, Ti, Al, Mg, Ca, Cr, Ni, Co, Sr, Zr, and Ba. It also is characterized by a less fractionated light REE pattern, a larger negative Eu anomaly, larger Ba/Sr and Rb/Sr ratios, a smaller K/Rb ratio, and larger heat productivity. The lower crust in New Mexico is more depleted in K, Th, U, and related LIL elements than the crust beneath average. Precambrian shield. Such depletion may be explained by transfer of LIL elements from deep to shallow crustal levels by rising granites that are produced by partial melting of the lower crust.
AB - Compared to average Precambrian shield, the average Precambrian terrane in New Mexico contains more Si, K, Rb, U and REE and less Fe, Ti, Al, Mg, Ca, Cr, Ni, Co, Sr, Zr, and Ba. It also is characterized by a less fractionated light REE pattern, a larger negative Eu anomaly, larger Ba/Sr and Rb/Sr ratios, a smaller K/Rb ratio, and larger heat productivity. The lower crust in New Mexico is more depleted in K, Th, U, and related LIL elements than the crust beneath average. Precambrian shield. Such depletion may be explained by transfer of LIL elements from deep to shallow crustal levels by rising granites that are produced by partial melting of the lower crust.
UR - http://www.scopus.com/inward/record.url?scp=84913946673&partnerID=8YFLogxK
U2 - 10.2343/geochemj.14.95
DO - 10.2343/geochemj.14.95
M3 - Article
AN - SCOPUS:84913946673
SN - 0016-7002
VL - 14
SP - 95
EP - 99
JO - GEOCHEMICAL JOURNAL
JF - GEOCHEMICAL JOURNAL
IS - 2
ER -