Allen Formation

Geology

Group: Malargüe

Members: unnamed (31), Lower (16), Middle (37), Upper (1)

Lithologies: not reported (11), claystone (1), mudstone (39), "shale" (1), siltstone (8), sandstone (64), conglomerate (1), lime mudstone (1), "limestone" (3), gypsum (4)

Paleoenvironments: marine indet. (3), terrestrial indet. (40), shallow subtidal indet. (1), marginal marine indet. (6), estuary/bay (1), lagoonal (1), fluvial indet. (19), fluvial-lacustrine indet. (1), lacustrine deltaic indet. (7), lacustrine indet. (3), interdune (3)

Age range: base of the Early/Lower Ordovician to the top of the Early/Lower Pleistocene or 485.40000 to 0.78100 Ma
Collections

Time interval Ma Country or state Original ID and collection number
Early/Lower Ordovician485.4 - 470.0Svalbard and Jan Mayen (212929)
Soudleyan458.4 - 457.2Ireland (Leinster) (55671)
Longvillian457.2 - 455.0Ireland (Lenister) (55710)
Longvillian457.2 - 455.0Ireland (Leinster) (89132)
Richmondian449.6 - 445.5Canada (Nunavut) (184436)
Ashgill449.5 - 443.7Canada (Northwest Territories) (188783)
Ashgill449.5 - 443.7Canada (Nunavut) (188155)
Ashgill - Wenlock449.5 - 427.4Canada (Northwest Territories) (188780 188781)
Ashgill - Wenlock449.5 - 427.4Canada (Nunavut) (188106 188107 188108 188109 188110 188111 188112 188113 188114 188115 188116 188117 188118 188119 188120 188121 188122 188123 188124 188125 188126 188127 188128 188129 188130 188131 188132 188133 188134 188135 188136 188139 188140 188141 188142 188143 188144 188145 188146 188147 188148 188156 188163 188164 188165 188166 188167 188168 188169 188170 188186 188187 188188 188189 188191 188192 188193 188194 188195 188199)
Llandovery - Wenlock443.4 - 427.4Canada (Northwest Territories) (188782)
Telychian438.5 - 433.4Canada (Nunavut) (188154)
Wenlock433.4 - 427.4Canada (Northwest Territories) (188784)
Wenlock433.4 - 427.4Canada (Nunavut) (26881)
Gorstian427.4 - 425.6Canada (Nunavut) (188138)
Late/Upper Givetian380.2 - 382.7Germany (Nordrhein-Westfalen) (75584 75585 75586 75587)
Artinskian290.1 - 279.3Australia (Western Australia) (84350 84495 84572 85216 95042)
Late/Upper Oxfordian161.2 - 155.7Germany (Niedersachsen) (23919 67913 94658)
Late/Upper Oxfordian161.2 - 155.7Germany (60387)
Late/Upper Oxfordian161.2 - 155.7Germany (Lower Saxony) (23909 23910 23911 23912 23913 23916 23917 23918 23921 23923 23924)
Middle Oxfordian161.2 - 155.7Germany (31433 31436 35904)
Middle Oxfordian161.2 - 155.7Germany (Niedersachsen) (31435 98352)
Middle Oxfordian - Late/Upper Oxfordian161.2 - 155.7Germany (Niedersachsen) (31437)
Late/Upper Oxfordian - Kimmeridgian161.2 - 152.1Germany (Niedersachsen) (149725)
Late/Upper Campanian - Early/Lower Maastrichtian83.5 - 66.0Argentina (Río Negro) (28459 32370 37039 48999 49557 52021 52910 95694 96070 96071 96091 96090 96092 96093 96094 96095 96096 96097 96098 96099 96100 96101 96102 96103 96104 96105 96106 96107 96108 96109 96110 96111 96704 115194 115195 131830 135703 139574 140325 141578 141581 145698 185025 190127 194129 204229 219347 219348 219349 219350 219351 219386 219528 219529 219530 219583 222575 230588 230596 231728 231729 231954 231955 231956 231957 231958 231959 231989 231990 231991 231992 232207 232274 232505 232506 235138)
Late/Upper Campanian - Early/Lower Maastrichtian83.5 - 66.0Argentina (Neuquen) (232090)
Late/Upper Campanian - Early/Lower Maastrichtian83.5 - 66.0Argentina (La Pampa) (48829)
Late/Upper Campanian - Early/Lower Maastrichtian83.5 - 66.0Argentina (Neuquén) (80388 98791 150621 219311 219312 219313)
Middle Campanian - Early/Lower Maastrichtian83.5 - 66.0Argentina (Río Negro) (230595)
Ypresian56.0 - 47.8Canada (British Columbia) (226231 112781 119863 119864 120624 120940 120943 120989 120990 121009 121037 121040 121041 121046 144348 146332 192141 192142 193538 204404 224003 227994)
Early/Lower Eocene55.8 - 48.6Canada (British Columbia) (186954)
Lutetian47.8 - 41.3Switzerland (157549 157550 157551 157554 157556 157557 157558 157559 157560 157561 157562)
Middle Eocene47.8 - 37.71Canada (British Columbia) (31571 32303 32305)
Oligocene33.9 - 23.03Russian Federation (50133)
Oligocene33.9 - 23.03Canada (British Columbia) (31673)
Burdigalian20.44 - 15.97Switzerland (46478)
Early/Lower Pleistocene2.588 - 0.781Australia (South Australia) (63379)