The Asunción Rift is a composite
graben
In geology, a graben () is a depression (geology), depressed block of the Crust (geology), crust of a planet or moon, bordered by parallel normal faults.
Etymology
''Graben'' is a loan word from German language, German, meaning 'ditch' or 't ...
and
rift in eastern
Paraguay
Paraguay, officially the Republic of Paraguay, is a landlocked country in South America. It is bordered by Argentina to the Argentina–Paraguay border, south and southwest, Brazil to the Brazil–Paraguay border, east and northeast, and Boli ...
. The rift is at some localities filled with up to 2500 m of sediments.
The rift has a width of 40 to 25 km and can be divided in three segments. The western segment has a NW-SE
strike and runs a length of over 90 km between the localities of
Benjamin Aceval and
Paraguarí. The central section runs from
Paraguarí to
Villarrica in an E-W direction and has a length of 70 km. The eastern section has a NW-SE orientation and a length of 40 km and runs from Villarrica to the
Ybytyruzú Mountains.
References
Rifts and grabens
Geology of Paraguay
Mesozoic rifts and grabens
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