Hawthorn Formation, Group

Geology

Formations: unnamed (11), Arcadia (38), Bayshore (2), Bone Valley (1), Chattahoochee (1), Coosawhatchie (1), Murdock Station (2), Peace River (41), Torreya (2)

Members: unnamed (3)

Lithologies: not reported (20), "siliciclastic" (1), claystone (6), siltstone (1), sandstone (32), gravel (1), marl (10), "reef rocks" (1), "limestone" (38), dolomite (5), "carbonate" (2), phosphorite (1)

Paleoenvironments: marine indet. (18), terrestrial indet. (16), carbonate indet. (2), shallow subtidal indet. (37), lagoonal/restricted shallow subtidal (5), reef, buildup or bioherm (1), marginal marine indet. (9), coastal indet. (8), estuary/bay (1), lagoonal (11)

Age range: base of the Chattian to the top of the Hemphillian or 28.10000 to 4.90000 Ma
Collections

Time interval Ma Country or state Original ID and collection number
Chattian28.1 - 23.03USA (Florida) (13076)
Chattian - Aquitanian28.1 - 20.44USA (Florida) (60985 61045 61047 61051 61069 61070 61071 61072 61073 61074 61096 61097 61098 61099 61111 61100 61101 61102 61103 61104 61105 61106 61107 61110 61108 61120 61124 61125 61126 61127 61128 61129 92509 111194 123677 123678)
Chattian - Aquitanian28.1 - 20.44USA (Georgia) (61130)
Chattian - Serravallian28.1 - 11.62USA (Florida) (35020)
Early/Lower Miocene23.03 - 15.97USA (Florida) (42432 42433 42436 42437 42438 42440 42441 71088)
Early/Lower Miocene23.03 - 15.97USA (South Carolina) (92413 92430 92431)
Early/Lower Miocene - Middle Miocene23.03 - 11.608USA (Florida) (155057)
Aquitanian - Messinian23.03 - 5.333USA (Florida) (35021 35022)
Miocene23.03 - 5.333USA (Florida) (18522 84060 204630)
Burdigalian20.44 - 15.97USA (Georgia) (55530)
Burdigalian20.44 - 15.97USA (South Carolina) (212231)
Burdigalian20.44 - 15.97USA (Florida) (35024)
Hemingfordian20.43 - 15.97USA (Florida) (176936)
Late/Upper Hemingfordian20.43 - 15.97USA (Florida) (18512)
Late/Upper Hemingfordian - Early/Lower Barstovian20.43 - 12.5USA (Florida) (58460)
Barstovian16.3 - 12.5USA (Florida) (18583)
Middle Miocene15.97 - 11.608USA (Florida) (35019)
Clarendonian12.5 - 9.4USA (Florida) (18588)
Early/Lower Clarendonian12.5 - 9.4USA (Florida) (18536 45461)
Tortonian11.62 - 7.246USA (Florida) (18505 18509 45452 45453 45454 45455 45456 45457 45459 45469 45476 45479 79963 90284 122350 122351)
Tortonian - Zanclean11.62 - 3.6USA (Florida) (18501 18511 18568 35023 79965 144202)
Tortonian - Zanclean11.62 - 3.6USA (florida) (144200)
Hemphillian10.3 - 4.9USA (Florida) (18504 18514 18556 18565 18577)
Late/Upper Hemphillian10.3 - 4.9USA (Florida) (18513 18532 18553 18573 18595 18599 60036 67804)
Late/Upper Hemphillian - Zanclean10.3 - 3.6USA (Florida) (18535)
Messinian7.246 - 5.333USA (Florida) (79964)
Early/Lower Pliocene5.333 - 3.6USA (Florida) (79961 79962)
Zanclean5.333 - 3.6USA (Florida) (45474 154720)