Fault network in Rio Colca valley between Maca and Pinchollo, Central Andes, southern Peru

• Autorzy: Żaba J. , Małolepszy Z. , Gaidzik K. , Ciesielczuk J. , Paulo A.
• Języki publikacji: EN

Abstrakty

EN

The network of faults and joints within the Mesozoic, Miocene and Pleistocene–Holocene formations was studied in the Rio Colca valley, in the Pinchollo–Lari–Maca area (Central Andes, southern Peru). A complex, multi-phase development of these structures was revealed. The results show that the structural framework of the Rio Colca valley consists of WNW–ESE and NE–SW faults, and a few W–E faults. The strike of the most common fault sets is approximately parallel (longitudinal) or perpendicular (transverse) to the W–E oriented strike of stratification surfaces in the Mesozoic sedimentary series and the W–E fold macro-structures, developed in these strata. Diagonal faults and joints are less common, although at some localities they are numerous. The recurrence of major fault systems throughout the Mesozoic and Miocene series and the Pleistocene–Holocene (mainly colluvial) deposits is proof of recent, tectonic activity in the study area. The recent faulting has led to the development of a system of distinct, primary fault scarps, tectonic grabens and horsts, as well as open fissures, which are well marked in the surface morphology, and in many cases have not yet been eroded.

Słowa kluczowe

EN

tectonics; structural geology; fault activity; Rio Colca Valley; Andes; southern Peru

• Wydawca: Polskie Towarzystwo Geologiczne
• Czasopismo: Annales Societatis Geologorum Poloniae
• Rocznik: 2012
• Tom: Vol. 82, No. 3
• Strony: 279--–290
• Opis fizyczny: Bibliogr. 37 poz., rys., wykr.

Twórcy

autor

Żaba J.

• Department of Fundamental Geology, Faculty of Earth Sciences, University of Silesia, Będzińska 60, 41-200 Sosnowiec, Poland

autor

Małolepszy Z.

• Department of Fundamental Geology, Faculty of Earth Sciences, University of Silesia, Będzińska 60, 41-200 Sosnowiec, Poland

autor

Gaidzik K.

• Department of Fundamental Geology, Faculty of Earth Sciences, University of Silesia, Będzińska 60, 41-200 Sosnowiec, Poland

autor

Ciesielczuk J.

• Department of Fundamental Geology, Faculty of Earth Sciences, University of Silesia, Będzińska 60, 41-200 Sosnowiec, Poland

autor

Paulo A.

• Faculty of Geology, Geophysics and Environment Protection, AGH University of Science and Technology, Mickiewicza 30, 30-059 Kraków, Poland

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