Salta Basin

Add links
From Wikipedia, the free encyclopedia
Salta Basin
Cuenca Salta
Map showing the location of Salta Basin
Map showing the location of Salta Basin
Location of the basin in Argentina
Coordinates23°40′S 66°07′W / 23.667°S 66.117°W / -23.667; -66.117
EtymologySalta Province
RegionArgentine Northwest
Country Argentina
 Bolivia
 Chile
State(s)Salta, Jujuy, Tucumán
Potosí
Antofagasta
CitiesSalta
Characteristics
On/OffshoreOnshore
BoundariesAndes
Part ofAndean foreland basins
Geology
Basin typeForeland-on-rift basin or
intracontinental rift basin
PlateSouth American
OrogenyAndean
AgeNeocomian-Neogene
StratigraphyStratigraphy

Salta Basin or Salta Rift Basin is a sedimentary basin located in the Argentine Northwest.[1][2] The basin started to accumulate sediments in the Early Cretaceous (Neocomian) and at present it has sedimentary deposits reaching thicknesses of 5,000 metres (16,000 ft). The basin contains seven sub-basins: Tres Cruces, Lomas de Olmedo, Metán, Alemanía, Salfity, El Rey, Sey and Brealito. The basin environment has variously been described as a "foreland rift" and an "intra-continental rift". The basin developed under conditions of extensional tectonics and rift-associated volcanism.[1]

Description[edit]

The basin basement is composed of rocks belonging to the Puncoviscana Formation.[2] The volcanism that began in the Late Jurassic was initially of subalkaline character (low sodium and potassium content), but turned increasingly alkaline in the Early Cretaceous.[1]

The rifts of Salta Basin developed in a time of generalized extensional tectonics along western South America.[3] It has been proposed that the Salar de Atacama depression in Chile was once a westward rift arm of the Salta Basin.[4]

Stratigraphy[edit]

Age Group Subgroup Formation Lithologies Basin stage Notes
Pliocene Payogastilla San Felipe Conglomerates Foreland [5]
Huayquerian Jujuy Piquete [6][7]
Huayquerian Guanaco Sonso [8]
Montehermosan Palo Pintado [9]
Chasicoan
Laventan Angastaco [10][11]
Friasian
Friasian Metán Jesús María [11]
Friasian Anta [11]
Early Miocene Río Seco [11]
Priabonian Los Colorados [11]
Casamayoran Quebrada de los Colorados [10]
Salta Santa Bárbara Lumbrera Late post-rift [12][13]
Lutetian
Itaboraian Maíz Gordo [12][14]
Thanetian
Peligran Mealla Sandstones, siltstones, conglomerates, paleosols [12][15]
Selandian Balbuena Tunal Early post-rift [12]
Danian Olmedo [12]
Yacoraite Sandstones, limestones [12]
Maastrichtian
early Maastrichtian Lecho Sandstones [12]
Campanian Pirgua Los Blanquitos Sandstones Late synrift [12]
Las Curtiembres Early synrift [12]
Santonian
Coniacian
Turonian
Cenomanian Isonza Basalt [12]
Albian La Yesera [12]
Aptian

References[edit]

  1. ^ a b c Marquillas et al., 2005
  2. ^ a b Grier et al., 1991
  3. ^ Ramos, 2009
  4. ^ Reutter et al., 2006
  5. ^ Galli et al., 2019, p.380
  6. ^ González & Abascal, 2012
  7. ^ Galli et al., 2019, p.369
  8. ^ López Rodríguez, 2018
  9. ^ Galli et al., 2011
  10. ^ a b Del Papa et al., 2013
  11. ^ a b c d e Galli & Hernández, 1999, p.171
  12. ^ a b c d e f g h i j k Marquillas et al., 2005, p.96
  13. ^ Del Papa, 2006
  14. ^ Narváez, 2009
  15. ^ Sánchez & Marquillas, 2010

Bibliography[edit]

General
  • Galli, Claudia I.; Ricardo N. Alonso; Beatriz L. Coira; Patricio Herrera Oviedo; Ornela E. Constantini; Andrea Barrientos Gines, and Juan Pablo Villalba Ulberich. 2019. Estratigrafía y paleoambientes de los depósitos del Plioceno de la Cordillera Oriental argentina. Opera Lilloana 52. 367–388. Accessed 2020-07-31.
  • Ramos, Víctor A. 2009. Anatomy and global context of the Andes: Main geologic features and the Andean orogenic cycle. Geological Society of America Memoirs 204(). 31–65. Accessed 2015-12-15. doi:10.1144/SP327.3
  • Reutter, Klaus-J.; Charrier, Reynaldo; Götze, Hans-J.; Schurr, Bernd; Wigger, Peter; Scheuber, Ekkehard; Giese, Peter; Reuther, Claus-Dieter; Schmidt, Sabine; Rietbrock, Andreas; Chong, Guillermo; Belmonte-Pool, Arturo (2006). "The Salar de Atacama Basin: a Subsiding Block within the Western Edge of the Altiplano-Puna Plateau". In Oncken, Onno; Chong, Guillermo; Franz, Gerhard; Giese, Peter; Götze, Hans-Jürgen; Ramos, Víctor A.; Strecker, Manfred R.; Wigger, Peter (eds.). The Andes: Active Subduction Orogeny. Springer. pp. 303–325. ISBN 978-3-540-24329-8.
  • Marquillas, Rosa A.; Cecilia del Papa, and Ignacio F. Sabino. 2005. Sedimentary aspects and paleoenvironmental evolution of a rift basin: Salta Group (Cretaceous–Paleogene), northwestern Argentina. International Journal of Earth Sciences 94(1). 94–113. Accessed 2015-12-12. doi:10.1007/s00531-004-0443-2 Bibcode:2005IJEaS..94...94M
  • Galli, C.I., and R.M. Hernández. 1999. Evolución de la Cuenca de Antepaís desde la zona de la Cumbre Calchaquí hasta la Sierra de Santa Bárbara, Eoceno inferior-Mioceno medio, provincia de Salta, Argentina. Acta Geológica Hispánica 34. 167–184. Accessed 2020-07-31.
  • Grier, M.E.; J.A. Salfity, and R.W. Allmendingern. 1991. Andean reactivation of the Cretaceous Salta rift, northwestern Argentina. Journal of South American Earth Sciences 4(4). 351–372. . doi:10.1016/0895-9811(91)90007-8 Bibcode:1991JSAES...4..351G
Guanaco Sonso Formation
Lumbrera Formation
Maíz Gordo Formation
Mealla Formation
Palo Pintado Formation
Piquete Formation
Quebrada de Los Colorados Formation

Further reading[edit]

Retrieved from "https://en.wikipedia.org/w/index.php?title=Salta_Basin&oldid=1174607204"