Palynological zonation of the Lajas Formation (Middle Jurassic) of the Neuquén Basin, Argentina

MARTÍNEZ, MARCELO A.

AMEGHINIANA

Asociación Paleontológica Argentina

Lugar: Buenos Aires; Año: 2002 p. 221 - 240

0002-7014

A new palynological zonation for the Middle Jurassic of the southern part of the Neuquén Basin is presented. Two zones and eight subzones based on sporomorphs and associated microplankton of late Aalenian to early Callovian age are defined. These zones are correlated with previous palynological zonation in the Neuquén Basin. Each depositional sequence previously identified in the study area by other workers is characterized by means of its macropaleontologic (mainly ammonites) and micropaleontologic content (relative frequencies of taxa and suprageneric groups) of each depositional sequence previously identified in the study area by others workers are given.