+ Site Statistics
+ Search Articles
+ PDF Full Text Service
How our service works
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ Translate
+ Recently Requested

Late Paleogene-Early Neogene palynology, Aries x-1 well, Argentine continental shelf, Tierra del Fuego, Argentina Palinologia del Paleogeno tardio-Neogeno temprano, pozo Aries x-1, Plataforma Continental Argentina, Tierra del Fuego



Late Paleogene-Early Neogene palynology, Aries x-1 well, Argentine continental shelf, Tierra del Fuego, Argentina Palinologia del Paleogeno tardio-Neogeno temprano, pozo Aries x-1, Plataforma Continental Argentina, Tierra del Fuego



Ameghiniana 372: 221-234



Nineteen cutting samples from the Aries x-1 well, drilled in the Argentine continental shelf, offshore Tierra del Fuego, were analized for palynology. Marine and terrestrial palynomorph assemblages, fairly well preserved, though neither diverse nor abundant, were recovered throughout the studied interval, comprising depths between 240-640 m. Four sections, D, C, B and A from botton to top are informally proposed on the basis of the palynological content. Sections D through B are considered Oligocene in age, most probably Upper Oligocene, whereas section A yielded Early Miocene assemblages, according to previously recorded species distribution in nearby areas. Two marine events were recognized in sections C and A respectively. The first is characterized by the presence of high amounts of protoperidinioid dinoflagellate cysts (up to 98%) mostly Brigantedinium sp., and the second, by equivalent amounts of both major dinocyst groups-gonyaulacoids, protoperidiniods- with absolute dominance of Nematosphaeropsis rigida Wrenn (32 % of the assemblage). An environmental trend from estuarine-transitional restricted (section C) to neritic nearshore marine (section A) is suggested. Terrestrial palynomorphs are abundant in sections C and A. Levels 500-550 m have large amounts of Nothofagidites spp., pterydophyte spores and fungal remains, probably reflecting forest vegetation in the surrounding area. The interval 260-300 m, section A, yielded a diverse pollen grain assemblage mostly composed of the herbaceous and shrubby families Cyperaceae, Asteraceae, Chenopodiaceae and Anacardiaceae.

Please choose payment method:






(PDF emailed within 1 workday: $29.90)

Accession: 038372108

Download citation: RISBibTeXText


Related references

Palinologia del Paleogeno tardio-Neogeno temprano, pozo Aries x-1, Plataforma Continental Argentina, Tierra del Fuego. 2000

Upper Paleogene-lower Neogene palynology of the Aries X-1 Well, Argentine continental shelf, Tierra del Fuego, Argentina. Ameghiniana 37(2): 221-234, 2000

Lower Eocene unilocular foraminifers from Tierra del Fuego Island and adjacent continental platform, Argentina Foraminiferos uniloculares, Eoceno inferior, Isla Grande de Tierra del Fuego y la plataforma continental adyacente, Argentina. Ameghiniana 371: 91-102, 2000

Micropaleontology, palynology and sedimentology of the Eocene-Miocene from the Aries e-2 well, continental platform of Tierra del Fuego, Argentina. Actas del Congreso Geologico Argentino 14(1): 369-372, 1999

Unilocular calcareous Foraminifera of the Middle-Upper Eocene and Lower Oligocene from Tierra del Fuego Island and adjacent continental platform, Argentina Foraminiferos uniloculares calcareos del Eocene medio-superior y Oligoceno inferior, Isla Grande de Tierra del Fuego y plataforma continental adyacente, Argentina. Revista del Museo Argentino de Ciencias Naturales. Noviembre; 12: 151-164, 1999

Record of Paleogene radiolarians from Tierra del Fuego Island, Argentina Hallazgo de radiolarios del Paleogeno en la Isla Grande de Tierra del Fuego, Argentina. Ameghiniana 383: 317-320, 2001

Foraminifers from the Irigoyen Formation, Neogene, Tierra del Fuego, Argentina Their paleobiogeographic significance Foraminiferos de la Formacion Irigoyen, Neogeno, Tierra del Fuego, Argentina su significado paleobiogeografico. Ameghiniana. 30 de junio; 422: 363-376, 2005

Paleogene radiolarias from Austral Basin, Tierra del Fuego Island, Argentina FT Radiolarios del Paleogeno de la cuenca Austral, Tierra del Fuego, Argentina. 2007

Biostratigraphy based on dinoflagellate cysts from the Cabo Pena Formation Latest Eocene-Early Oligocene, Tierra del Fuego, Argentina Bioestratigrafia basada en quistes de dinoflagelados de la formacion Cabo Pena Eoceno Terminal-Oligoceno Temprano, Tierra del Fuego, Argentina. Revista Espanola de Micropaleontologia. Enero-Abril; 341: 105-116, 2002

Microplancton fosil de sedimentos terciarios y cretacicos del norte de Tierra del Fuego (Argentina); fossil microplankton of Tertiary and Cretaceous sediments from the northern Tierra del Fuego (Argentina). Ameghiniana 4(1): 7-15, 1965

Topography and sediments of the continental shelf of Santa Cruz and Tierra del Fuego, Argentina. Resumenes - Congreso Geologico Argentino 5: 48, 1972

Palinologia y palinofacies de una secuencia marina del Holoceno medio-tardio; Albufera Lanushuaia, Canal Beagle, Tierra del Fuego, Argentina. Revista Brasileira de Paleontologia 14.3, 2011

Neogene palynology of Tierra del Fuego, Argentina; conifers. Alcheringa 29(1): 113-121, 2005

Foraminiferos uniloculares calcareos del Eoceno medio-superior y Oligoceno inferior, Isla Grande de Tierra del Fuego y plataforma continental adyacente, Argentina. Revista del Museo Argentino de Ciencias Naturales Nueva Serie 1(2): 151-164, 1999

Stratigraphy, sedimentology, and palynology of the Sloggett Formation (continental Paleogene), Tierra del Fuego. Revista de la Asociacion Geologica Argentina 53(4): 504-516, 1998