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Pircancha Formation

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FIGURE 2. Ordovician timetable showing the stratigraphic distribution of kn...
in > PALAIOS
Published: 01 October 2009
 =  Pircancha Formation; RO  =  Rowena Formation; SP  =  Sepulturas Formation; SY  =  Stairway Sandstone; SK  =  Stokes Formation.
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FIGURE 1. Paleogeographic reconstruction of Gondwana during the Ordovician ...
in > PALAIOS
Published: 01 October 2009
FIGURE 1. Paleogeographic reconstruction of Gondwana during the Ordovician (after Veevers, 2004 ) showing the location of known pteraspidomorph fossil-bearing localities: 1  =  Anzaldo Formation, Bolivia; 2  =  Pircancha Formation, Bolivia; 3  =  Sepulturas Formation, Argentina; 4  =  Trapiche
Journal Article
Journal: PALAIOS
Published: 01 October 2009
PALAIOS (2009) 24 (10): 717-722.
...  =  Pircancha Formation; RO  =  Rowena Formation; SP  =  Sepulturas Formation; SY  =  Stairway Sandstone; SK  =  Stokes Formation. ...
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Series: GSA Special Papers
Published: 01 January 2007
DOI: 10.1130/2007.2423(26)
...) . Correlation of the sections is based on their graptolite biostratigraphy ( Egenhoff et al., 2004 ; Fig. 3 ). The succession is subdivided into the Obispo, Taraya, Pircancha, Sella, and Rumi Orkho Formations ( Rivas et al., 1969 ; Egenhoff, 2000 ; Schönian, 2000 ), with their stratigraphic relationships...
Journal Article
Published: 01 May 2004
Geological Magazine (2004) 141 (3): 287-299.
... of large parts of the shelf. In the late Arenig, the westward-shifting coastline had reached a position some tens of kilometres east of Tupiza (Figs 1 , 4 ). The Pircancha, Rumi Orkho and Sella formations represent the pro-gradational deltaic units of this shift. They crop out at Sella, Cieneguilas...
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Series: Geological Society, London, Special Publications
Published: 01 January 2009
DOI: 10.1144/SP325.11
EISBN: 9781862395732
... is represented by the Sama, Iscayachi, Cieneguillas, Obispo, Agua y Toro, and Pircancha or Sella formations, and the Middle Ordovician by the Anzaldo and San Benito formations. A lithostratigraphical and biostratigraphical scheme of Bolivian units was provided by Suárez Soruco (2000) , and basin evolution...
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