NDLI: Análisis palinoestratigráfico de la Formación Lajas, Jurásico Medio de la Cuenca Neuquina, Argentina

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Análisis palinoestratigráfico de la Formación Lajas, Jurásico Medio de la Cuenca Neuquina, Argentina

Content Provider	Semantic Scholar
Author	Sarjeant, William Antony Swithin Martínez, María Angeles Alvarez Quattrocchio, Mirta E.
Copyright Year	2001
Abstract	En este trabajo se presentan las descripciones sistematicas y microfotografias de palinomorfos terrestres (94) y marinos (20) identificados para la Formacion Lajas (Jurasico medio). Los palinomorfos fueron recuperados de muestras de afloramientos pertenecientes a cuatro secciones estratigraficas (Lohan Mahuida, Puesto Bascunan, Puente Picun Leufu y Portada Covunco) localizadas en cercanias de la localidad de Zapala, en el sector centrooccidental de la Cuenca Neuquina, Argentina. Se describen miosporas triletes pertenecientes a los generos Concavisporites, Converrucosisporites, Clavatisporites, Verrucosisporites, Neoraistrickia, Pilosisporites, Trilobosporites, Antulsporites, Camptozonotriletes, Interulobites, Nevesisporites y Gleicheniidites. Se propone la nueva combinacion Clavatisporites bagualensis (Volkheimer, 1968). Dentro del paleomicroplancton se identificaron 6 especies de acritarcas asignadas a los generos Micrhystridium y Polygonium que revisten el caracter de primera mencion para la cuenca. Las microfloras analizadas se correlacionan con la zonacion propuesta para la Cuenca Neuquina por Quattrocchio et al. (1996a); Zona de Callialasporites dampieri (Toarciano tardio-Oxfordiano)-Subzona de Callialasporites turbatus (Toarciano tardio- Bajociano temprano) y Subzona de Ischyosporites marburgensis (Bajociano temprano alto- Bajociano tardio). Se sugiere para la Formacion Lajas un rango de edad comprendido entre el Toarciano tardio y Bajociano tardio.
Starting Page	33
Ending Page	60
Page Count	28
File Format	PDF HTM / HTML
Volume Number	33
Alternate Webpage(s)	http://www.igme.es/Publicaciones/revistaMicro/vol33/num1/martinez.pdf
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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