How does the Nazca Ridge subduction influence the modern Amazonian foreland basin?

被引：135

作者：

Espurt, N.

Baby, P.

Brusset, S.

Roddaz, M.

Hermoza, W.

Regard, V.

Antoine, P-O

Salas-Gismondi, R.

Bolanos, R.

机构：

[1] Univ Toulouse, LMTG, CNRS, IRD,OMP, F-31400 Toulouse, France

[2] IRD, PERUPETRO, Lima 18, Peru

[3] IRD, PERUPETRO, Lima 41, Peru

[4] UNMSM, Museo Hist Nat, Dept Paleontol Vertebrados, Lima 14, Peru

来源：

GEOLOGY | 2007年 / 35卷 / 06期

关键词：

Nazca Ridge; Amazonian foreland basin; Neogene; flat subduction; Fitzcarrald arch;

D O I：

10.1130/G23237A.1

中图分类号：

P5 [地质学];

学科分类号：

0709 ; 081803 ;

摘要：

The subduction of an aseismic ridge has important consequences on the dynamics of the overriding upper plate. In the central Andes, the Nazca Ridge subduction imprint can be tracked on the eastern side of the Andes. The Fitzcarrald arch is the long-wavelength topography response of the Nazca Ridge flat subduction, 750 km inboard of the trench. This uplift is responsible for the atypical three-dimensional shape of the Amazonian forelland basin. The Fitzearrald arch uplift is no older than Pliocene as constrained by the study of Neogene sediments and geomorphic markers, according to the kinematics of the Nazca Ridge subduction.

引用

页码：515 / 518

页数：4

共 35 条

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