Sekwi Formation

Geology

Group: Atan

Members: unnamed (63), Campito (2), Limestone (8)

Lithologies: mudstone (6), "shale" (3), siltstone (7), lime mudstone (1), "limestone" (60), dolomite (2), "carbonate" (3)

Paleoenvironments: marine indet. (47), carbonate indet. (3), shallow subtidal indet. (9), open shallow subtidal (7), reef, buildup or bioherm (4), deep subtidal indet. (4)

Age range: base of the Montezuman to the top of the Stage 3 or 520.00000 to 514.50000 Ma
Collections

Time interval Ma Country or state Original ID and collection number
Early/Lower Cambrian538.8 - 506.5Canada (Northwest Territories) (156132 156143 156145 156146 156147 156150 156152 156156 156157 156158 156159 156169 156170 156171 156172 156173 156174 156175 156176 156177 156178 156179 156180 156181 156182 156183 156184 156185 156186 156187 156188 156189 156190 156191 156192 156193 156194 156195 156196 156197 156198 156199 156200 156201 156202)
Cambrian538.8 - 486.85Canada (Northern Territories) (228646 228647 228648 228649 228650)
Atdabanian521.0 - 516.0Canada (Northwest Territories) (9585 49019 49020 49021 49027 50170 157302)
Atdabanian521.0 - 516.0Canada (British Columbia) (49008 49009 49010 49011 49012 49013 49014 49015)
Stage 3521.0 - 514.5Canada (Northern Territories) (240100)
Montezuman - Waucoban520.0 - 506.5Canada (Northwest Territories) (156024)
Botomian516.0 - 512.1Canada (Northwest Territories) (80957 80959 80960 80961)
Dyeran515.3 - 509.7Canada (Yukon) (93092)
Dyeran515.3 - 509.7Canada (Northern Territories) (240104 240105)