A great thickness of sediment normally builds up BECAUSE of subsidence, i.e. the basin deepens due to tectonics and leaves more space to be filled up, the thickness of sediment does not normally cause subsidence in geological processes.
This is Peru where active tectonics lead to susidence, forming basins which are infilled - hence I opt, in context, for causal, not resultant, subsidence.

Imagine a delta forming at the end of a river - if more sediment arrives, it can only thicken to water height, it doesn't build a mountain, instead it spreads over a wider area.

[PDF] Active Subsidence Controlled by Basement Structures in the ...File Format: PDF/Adobe Acrobat - View as HTML
Active subsidence controlled by basement structures. Andean range of Peru and also laterally over the present foothills. The basin was ...

[PDF] Subsidence history of the north Peruvian Oriente (Maronon basin ...File Format: PDF/Adobe Acrobat - View as HTML
67 m/Ma) indicates that flexural subsidence dominates, and that the Oriente basin of. Peru has becomed a foreland basin. Thomas et al. ...
horizon.documentation.ird.fr/exl-doc/pleins_textes/divers4/010008590.pdf - Similar pages