give some information on the above mentioned formation?
A geologic formation with outcrops in the Argentine provinces of Río Negro, Neuquén, and Mendoza.
La Amarga Formation
 geologic formation with outcrops in the Argentine provinces of Río Negro, Neuquén, and Mendoza.
what is amargasaurus? A genus of sauropod dinosaur when was it discovered? 1984 mention a few of its physical appearance? It has a long tail and neck, a small head, and a barrel-shaped trunk supported by four column-like legs. who discovered amargasaurus? Guillermo Rougier where was he born? UNANSWERABLE was there anyone else besides rougier who contributed to the discovery of the dinosaur? The expedition led by Argentine paleontologist José Bonaparte supported by the National Geographic Society what does the society do? They promote environmental and historical conservation, and the study of world culture and history when was it established? 1888 who was involved in its establishment? An elite group of academics and wealthy patrons interested in travel and exploration. do they have any publications? Yes, National Geographic Adventure", "National Geographic Research", atlases, books, and maps where was amargasaurus discovered? In sedimentary rocks of the La Amarga Formation
wiki:23058162
La Amarga Formation [SEP] Introduction
The La Amarga Formation is a geologic formation with outcrops in the Argentine provinces of Río Negro, Neuquén, and Mendoza. It is the oldest Cretaceous terrestrial formation in the Neuquén Basin. The type locality is La Amarga Arroyo and China Muerta Hill. The La Amarga Formation unconformably overlies the marine Agrio Formation of the Mendoza Group. It is in turn overlain by the Lohan Cura Formation, separated by another unconformity.