TY - JOUR
T1 - Decelerating Nazca-South America and Nazca-Pacific plate motions
AU - Norabuena, Edmundo O.
AU - Dixon, Timothy H.
AU - Stein, Seth
AU - Harrison, Christopher G.A.
PY - 1999/11/15
Y1 - 1999/11/15
N2 - Space geodetic estimates of the rate of Nazca-South America convergence and Nazca-Pacific spreading averaging over several years show that present day rates are significantly slower than the 3 million year average NUVEL-1A model. The implied rates of deceleration are consistent with longer term trends extending back to at least 20 Ma, about the time of initiation of Andes growth, and may reflect consequences of ongoing subduction and construction of the Andes, e.g., increased friction and viscous drag on the subducted slab as the leading edge of South America thickens.
AB - Space geodetic estimates of the rate of Nazca-South America convergence and Nazca-Pacific spreading averaging over several years show that present day rates are significantly slower than the 3 million year average NUVEL-1A model. The implied rates of deceleration are consistent with longer term trends extending back to at least 20 Ma, about the time of initiation of Andes growth, and may reflect consequences of ongoing subduction and construction of the Andes, e.g., increased friction and viscous drag on the subducted slab as the leading edge of South America thickens.
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U2 - 10.1029/1999GL005394
DO - 10.1029/1999GL005394
M3 - Article
AN - SCOPUS:0033570673
SN - 0094-8276
VL - 26
SP - 3405
EP - 3408
JO - Geophysical Research Letters
JF - Geophysical Research Letters
IS - 22
ER -