Skip to Main Content


The Tres Pasos Formation is a continental margin-scale progradational mudstone- to siltstone-rich slope succession. The lower part of this formation is characterized by an architecturally variable suite of sandstone-rich channel and sheet elements punctuated by mudstone-rich mass transport deposits. Sandstone-rich sedimentary bodies comprise massive sandstone (mostly high-density turbidity current deposits; S1 and S3 sensu Lowe, 1982), intrabasinal mudstone-clast conglomerates, and various finer-grained turbidite facies (i.e., Bouma divisions; Bouma, 1962). The sandstone bodies exhibit a highly-variable internal architecture, including complex scour-and-fill features and lateral facies changes. Large-scale mudstone-dominated mass transport deposits (MTDs) typically contain mud-matrix supported debris flow deposits mixed with slide/slump blocks of variable sizes and are common between sandstone packages. The upper part of the Tres Pasos Formation is dominated by turbiditic mudstone and siltstone, hemipelagic mudstone, and sparse scours filled with coarse-grained pebbly material interpreted as by-pass conduits.

You do not currently have access to this chapter.

Figures & Tables





Citing Books via

Close Modal
This Feature Is Available To Subscribers Only

Sign In or Create an Account

Close Modal
Close Modal