Inherited discontinuities and fault kinematics of a multiphase, non-colinear extensional setting: Subsurface observations from the South Flank of the Golfo San Jorge basin, Patagonia

Sandstone petrography and provenance of the Chubut Group (Cretaceous) in the Cañadón Matasiete (Golfo San Jorge Basin, central Patagonia): Implications for basin evolution and alluvial organization

“…to Hauterivian (Seiler and Viña, (1997) in Sylwan et al, 2011;Perez Loinaze et al, 2019). The overlying "Chubutian Basin" records several extensional phases (Figari et al, 1999;Paredes et al, 2013Paredes et al, , 2018, and gradual thickness distribution at a regional scale (Fitzgerald et al, 1990) but locally compressional features have been identified (Navarrete et al, 2016). Although historically considered a fold belt mainly developed during the Tertiary, and with the main uplift event in the Miocene (Homovc et al, 1995;Chelotti, 1997;Rodriguez and Littke, 2001), the age of the initial stages of uplifting of the San Bernardo Fold Belt is variable along the fold belt, been considered as old as Albian (Gianni et al, 2015a,b), Upper Cretaceous (Barcat et al, 1989;Allard et al, 2015) or Paleogene (Paredes et al, 2006).…”

“…In its southern margin, the volcaniclastic succession is referred either as the Bahía Laura Group (Lesta and Ferello, 1972) or Bahía Laura Volcanic Complex (Sruoga et al, 2008), whereas in its northern counterpart is known as and the Lonco Trapial Group (Lesta and Ferello, 1972) or Marifil Complex (Cortés, 1981). A phase of active stretching occurred along several NW-SE, NE-SW and W-E striking half grabens conforming the "Neocomian Basin" (Fitzgerald et al, 1990;Figari et al, 1996;Sylwan, 2001;Paredes et al, 2013;Giampaoli, 2015), which in most cases represent the reactivation of inherited weaknesses in a basement of presumably upper Paleozoic age (Paredes et al, 2018) with ages ranging from Kimmeridgian? to Hauterivian (Seiler and Viña, (1997) in Sylwan et al, 2011;Perez Loinaze et al, 2019).…”

Climatic control on stacking and connectivity of fluvial successions: Upper Cretaceous Bajo Barreal Formation of the Golfo San Jorge basin, Patagonia

“…The Golfo San Jorge basin formed as response to the Gondwana breakup (Uliana et al, 1989;Fitzgerald et al, 1990), with several phases of extensional reactivation during the Cretaceous (Paredes et al, 2018b;Giampaoli, 2019), followed by a process of positive inversion tectonics along the San Bernardo fold belt (Fig. 1), which rose up mainly during Neogene times (Peroni et al, 1995;Homovc et al, 1995).…”

Stratigraphic architecture and paleosols as basin correlation tools of the early Paleogene infill in central–south Patagonia, Golfo San Jorge Basin, Argentinean Patagonia

“…It suffered different phases of extensional reactivation during the Cretaceous, followed by the process of positive inversion tectonics along the San Bernardo Fold Belt (Fig. 1A), which rose mainly during the Neogene (Homovc et al, 1995;Paredes et al, 2018). Figari et al (1999) internally divided this basin according to its structural style into five zones: North Flank, Center of the Basin, South Flank, San Bernardo Fold Belt, and Western Sector (Fig.…”