Sarmiento Formation, Group

Geology

Formations: Deseado (1)

Members: unnamed (79), Colhue-Huapi (2), Colhué Huapí (7), Gran Barranca (17), Lower Puesto Almendra (1), Puesto Almendra (1), Rosado (2), Trelew (5), Upper Puesto Almendra (5), Vera (3)

Lithologies: not reported (82), claystone (5), mudstone (2), "shale" (1), sandstone (26), conglomerate (1), breccia (1), "mixed carbonate-siliciclastic" (1), "volcaniclastic" (1), tuff (30)

Paleoenvironments: terrestrial indet. (114), paralic indet. (1), fluvial indet. (1), wet floodplain (2), crater lake (1), lacustrine indet. (4)

Age range: base of the Casamayoran to the top of the Colhuehuapian or 56.00000 to 17.50000 Ma
Collections

Time interval Ma Country or state Original ID and collection number
Casamayoran56.0 - 48.0Argentina (Chubut) (39295 49898 49899 176491 232403)
Mustersan48.0 - 42.0Argentina (Chubut) (38878 38879 49901 105837 175759 175760 175761 176179 176194 186802)
Lutetian47.8 - 41.3Argentina (Chubut) (44956 176170 176171 176172 176173 176174 208469 208470 208471 208472 208473 208474 208475 208477 208478 208479 208480 208481 208483 208484 208485 208486 208487 208488)
Middle Eocene47.8 - 37.71Argentina (Chubut) (61228 142920 142929 185026 187591 193010 225618)
Middle Eocene - Oligocene47.8 - 23.03Argentina (Chubut) (141241 141246)
Middle Eocene - Early/Lower Miocene47.8 - 15.97Argentina (Chubut) (176461 234048)
Bartonian41.3 - 38.0Argentina (Chubut) (13779 38172 49900 49902 176175 176176 176177 176178 176180 176181 176182 176183 176184 176185 176186 176187 176188 176189 176190 176191 176192 176193 176468 176492)
Bartonian41.3 - 38.0Argentina (Santa Cruz) (176494)
Tinguirirican36.0 - 29.0Argentina (Chubut) (176195 176196 176200)
Early/Lower Oligocene33.9 - 28.4Argentina (Chubut) (186572)
Rupelian33.9 - 28.1Argentina (Chubut) (176201)
Deseadan29.0 - 21.0Argentina (Chubut) (14211 49849 49851 49852 92670 146358 176203 176204 176235 176467 176490 176645 176647)
Deseadan29.0 - 21.0Argentina (Santa Cruz) (176269 176626 176627 220634)
Late/Upper Oligocene28.4 - 23.03Argentina (Chubut) (176202)
Chattian28.1 - 23.03Argentina (Chubut) (49783)
Early/Lower Miocene23.03 - 15.97Argentina (Chubut) (208499 208500 208501 208502 208503)
Colhuehuapian21.0 - 17.5Argentina (Chubut) (27311 141368 145897 176236 176237 176238 176239 176240 176270 197191 201746 203921 206621 206733 232372 232404)
Colhuehuapian - Burdigalian21.0 - 15.97Argentina (Chubut) (204204)
Burdigalian20.44 - 15.97Argentina (Chubut) (176205 206343)