Chubut Group

Geology

Formations: unnamed (1), Bajo Barreal (12), Castillo (1), Cerro Barcino (23), Lago Colhué Huapi (19)

Lithologies: not reported (21), "siliciclastic" (1), claystone (3), mudstone (13), siltstone (1), sandstone (20), conglomerate (4), lime mudstone (2), tuff (6)

Paleoenvironments: terrestrial indet. (34), fluvial indet. (7), channel lag (4), "floodplain" (5), crevasse splay (1), lacustrine - small (1), lacustrine indet. (2), dune (2)

Age range: base of the Late/Upper Aptian to the top of the Early/Lower Maastrichtian or 119.57000 to 66.00000 Ma
Collections

Time interval Ma Country or state Original ID and collection number
Late/Upper Aptian119.57 - 113.2Argentina (Chubut) (26372 38530 59288 59289 154711 154712 208380 208381 208382 208383 208384)
Late/Upper Aptian - Early/Lower Albian119.57 - 110.1Argentina (Chubut) (38532 38533 231319)
Albian113.2 - 100.5Argentina (Chubut) (38529 38531 46075 94608 162466 162499 187736 219346 275568)
Cenomanian100.5 - 93.9Argentina (Chubut) (90788)
Cenomanian - Turonian100.5 - 89.8Argentina (Chubut) (51621 52031 70674)
Late/Upper Cenomanian - Early/Lower Turonian100.5 - 89.8Argentina (Chubut) (38952 49099 51619 66893 123284 234017)
Late/Upper Cenomanian - Middle Turonian100.5 - 89.8Argentina (Santa Cruz) (109015)
Middle Cenomanian - Late/Upper Turonian100.5 - 89.8Argentina (Chubut) (68151 115564)
Cenomanian - Campanian100.5 - 72.2Argentina (Chubut) (52030)
Coniacian89.8 - 85.7Argentina (Chubut) (51620 219559)
Santonian - Late/Upper Maastrichtian85.7 - 66.0Argentina (Chubut) (205722)
Campanian - Early/Lower Maastrichtian83.6 - 66.0Argentina (Chubut) (52909)
Campanian - Maastrichtian83.6 - 66.0Argentina (Chubut) (51618 196404 219533)
Late/Upper Campanian - Maastrichtian83.6 - 66.0Argentina (Chubut) (230594)
Late/Upper Maastrichtian72.2 - 66.0Argentina (Chubut) (46148 58574 205721 220171 233992 234014 234015 234016 275222)
Maastrichtian72.2 - 66.0Argentina (Chubut) (233994 233995)