Andean foreland basins: Difference between revisions

In part sediment accumulation, uplift and subsidence of the Andean foreland basins is controlled by transverse zones of "[[structural geology|structural]] accommodation", likely corresponding to ancient continent-wide faults. From the [[Orocline|Bolivian Orocline]] (20° S, also known as Arica Deflection or Arica Elbow) north these zones of accommodation runs with a NEE-SWW orientation and south of the orocline they run with a NW-SE orientation.<ref>{{cite journal |last=Jacques |first=John M. |date=203 |title=A tectonostratigraphic synthesis of the Sub-Andean basins: implications for the geotectonic segmentation of the Andean Belt |url= |journal=Journal of the Geological Society, London |publisher= |volume=160 |issue= |pages=687–701 |doi= 10.1144/0016-764902-088|access-date=11 December 2015}}</ref> The Andean foreland basins in Bolivia have largely accumulated continental sediments, most of them of [[clastic]] nature.<ref>{{cite conference |url=http://horizon.documentation.ird.fr/exl-doc/pleins_textes/divers4/010008641.pdf |title=Cenozoic evolution of the Andean foreland basin between 15'30' and 22'00'S |first=David |last=Subieta Rossetti |first2=Patrice |last2=Baby|first3=Jean Louis |last3=Mugnier |author= |author-link= |date= |year=1996 |conference=Third ISAG, St Malo (France)|conference-url= |editor= |others= |volume= |edition= |book-title= |publisher= |archive-url=http://horizon.documentation.ird.fr/exl-doc/pleins_textes/divers4/010008641.pdf |archive-date=1996 |location= |pages= |format= |id= |isbn= |bibcode= |oclc= |doi= |access-date= |quote= |ref= |separator= |postscript= |language= |page= |at= |trans-title= }}</ref>

| The Cuyo Basin is an elongated sedimentary basin of NNW-SSE orientation limited to the west by the Sierra Pintada System and to the {{where|date=August 2016}} by the [[Pampia|Pampean pericraton]]. To the north the basin reaches the area around the city of [[Mendoza, Argentina|Mendoza]]. The basin existed already during the [[Triassic]] but its current shape is derivative of the [[Andean orogeny]].<ref>{{cite web |url=http://www.energia.gov.ar/contenidos/verpagina.php?idpagina=811 |title=Cuenca Cuyana |language=Spanish |last1= |first1= |last2= |first2= |date= |website=Secretaría de Energía |publisher=Government of Argentina |access-date=30 November 2015 |quote=}}</ref>

| Neuquén Basin is a sedimentary basin that originated in the Jurassic and developed through alternating continental and marine conditions well into the Tertiary. The basin bounds to the west with the [[Andean Volcanic Belt]], to the southeast with the [[North Patagonian Massif]] and to the northeast with the Sierra Pintada System.<ref>{{cite web |url=http://www.energia.gov.ar/contenidos/verpagina.php?idpagina=812 |title=Cuenca Neuquina |language=Spanish |last1= |first1= |last2= |first2= |date= |website=Secretaría de Energía |publisher=Government of Argentina |access-date=30 November 2015 |quote=}}</ref>

| The [[Magallanes Basin]] is a foreland basin located in southern Patagonia. The basin covers a surface of about 170.000–200.000&nbsp;km² and has a NNW-SSE oriented shape.<ref name=Gallardo2014>{{cite journal |last=Gallardo |first=Rocío E. |last2= |first2= |date=2014 |title=Seismic sequence stratigraphy of a foreland unit {{sic|in|the|expected=in the|nolink=yes}} Magallanes-Austral Basin, Dorado Riquelme Block, Chile: Implications for deep-marine reservoirs|url=http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-49792014000100005&lng=es&nrm=iso&tlng=en |journal=[[Latin American Journal of Sedimentology and Basin Analysis]] |publisher=Asociación Argentina de Sedimentología |volume=1221 |issue=1 |pages= |doi= |access-date=7 December 2015|language=Spanish}}</ref><ref>{{cite web |url=http://www.energia.gov.ar/contenidos/verpagina.php?idpagina=814 |title=Cuenca Austral |language=Spanish |last1= |first1= |last2= |first2= |date= |website=Secretaría de Energía |publisher=Government of Argentina |access-date=30 November 2015 |quote=De una superficie total de 170.000 Km2, unos 23.000 Km2 pertenecen al área costa afuera.}}</ref> The basin evolved from being an [[extensional tectonics|extensional]] [[back-arc basin]] in the [[Mesozoic]] to being a compressional foreland basin in the [[Cenozoic]].<ref>{{cite journal |last=Wilson |first=T.J. |last2= |first2= |date=1991 |title=Transition from back-arc to foreland basin development in the southernmost Andes: Stratigraphic record from the Ultima Esperanza District, Chile |url= |journal=Geological Society of America Bulletin |publisher= |volume=103 |issue=1 |pages=98–111 |doi= 10.1130/0016-7606(1991)103<0098:tfbatf>2.3.co;2|access-date=11 December 2015}}</ref>

* {{cite LSA |last=Bally |first=A.W. |last2=Snelson |first2=S. |year=1980 |title=Realms of subsidence |journal=Canadian Society for Petroleum Geology Memoir |volume=6 |pages=9-949–94}}

* {{cite LSA |last=Kingston |first=D.R. |last2=Dishroon |first2=C.P. |last3=Williams |first3=P.A. |year=1983 |title=Global Basin Classification System |url=http://www.monografias.com/trabajos-pdf4/global-basin-classification-system/global-basin-classification-system.pdf |journal=[[American Association of Petroleum Geologists|AAPG Bulletin]] |volume=67 |pages=2175-21932175–2193 |accessdate=2017-06-23}}

* {{cite LSA |last=Klemme |first=H.D |year=1980 |title=Petroleum Basins - Classifications and Characteristics |url=http://onlinelibrary.wiley.com/doi/10.1111/j.1747-5457.1980.tb00982.x/abstract |journal=[[Journal of Petroleum Geology]] |volume=3 |pages=187-207187–207 |accessdate=2017-06-23}}