Santa Rosa Formation

Geology

Group: Chinle

Members: unnamed (1), Los Esteros (8), Mudstone (1), Tres Lagunas (2)

Lithologies: not reported (8), claystone (1), mudstone (1), siltstone (2), sandstone (2)

Paleoenvironments: terrestrial indet. (9), foreshore (1), crevasse splay (1)

Age range: base of the Emsian to the top of the Rancholabrean or 410.62000 to 0.01400 Ma
Collections

Time interval Ma Country or state Original ID and collection number
Emsian410.62 - 393.47Bolivia (140373)
Artinskian290.1 - 283.3USA (California) (93294 93295 107967 108132 108133 108139 108140 108143 115923 115924 115925 115926 115927 115928 115929 115930 115931 115934 115935 115936 115937 115938 115939 115940 115941 115942 115943 115944 115945 115946 115947 115948 115949 115950 115952 115956 115957 118414 118417 118418 118420)
Kungurian283.3 - 274.4USA (California) (93293 115932 115933 115951 115953 115954 115955 118415 118416 118419 118421 118422 118423 118424 118425 118426 118427 118428 118429 118430 118431 118432 118433 118434 118435 118436 118437 118438 118439 118440 118441)
Carnian237.0 - 227.3USA (New Mexico) (24502 83736)
Carnian - Norian237.0 - 205.7USA (Texas) (22666)
Late/Upper Triassic237.0 - 201.4USA (New Mexico) (92873)
Norian227.3 - 205.7USA (New Mexico) (52503 93580 93611 93613 93615 93616 93617 93618)
Late/Upper Hettangian201.4 - 199.5Mexico (Sonora) (208236 208237)
Hettangian - Sinemurian201.4 - 192.9Mexico (Sonora) (115210)
Early/Lower Sinemurian199.5 - 192.9Mexico (Sonora) (115211 208238 208239 208240 208242 208243)
Late/Upper Sinemurian199.5 - 192.9Mexico (Sonora) (115212 115213 208257 208244 208247 208248 208276)
Sinemurian199.5 - 192.9Mexico (Sonora) (40176 40177)
Early/Lower Pliensbachian192.9 - 184.2Mexico (Sonora) (208260 208262 208264 208265 208266 208267 208268 208269 208270 208271 208272 208273 208274 208275 208277 208278 208279 208280 208281 208282)
Rancholabrean0.21 - 0.014USA (California) (84901)