Koobi Fora Formation

Geology

Group: Omo

Members: unnamed (2), Burgi (2), Chari (6), indet (1), Indet. (31), KBS (45), Lokochot (7), Lokochot/Tulu Bor (6), Lonyumun (3), Lonyumun/Moiti (3), Lower Burgi (4), Moiti (3), Okote (33), Okote and KBS (3), Tulu Bor (9), Tulu Bor/Lower Burgi (3), Upper Burgi (21)

Lithologies: not reported (29), "siliciclastic" (1), claystone (20), mudstone (25), siltstone (19), sandstone (70), conglomerate (1), tuff (15)

Paleoenvironments: terrestrial indet. (41), delta plain (1), deltaic indet. (3), foreshore (3), fluvial indet. (23), alluvial fan (1), wet floodplain (30), dry floodplain (5), fluvial-lacustrine indet. (34), fluvial-deltaic indet. (19), lacustrine - small (2), lacustrine indet. (9)

Age range: base of the Zanclean to the top of the Calabrian or 5.33300 to 0.77400 Ma
Collections

Time interval Ma Country or state Original ID and collection number
Zanclean5.333 - 3.6Kenya (21406 21428 21510 22338)
Zanclean - Piacenzian5.333 - 2.588Kenya (21429 21434 21439 21512)
Zanclean - Calabrian5.333 - 0.774Kenya (21369 21395 21399 21405 21417 21473 21506 21531 195270)
Piacenzian3.6 - 2.588Kenya (21407 21408 21423 21424 21425 21430 21431 21432 21435 21436 21438 21440 21459 21479 21480 21481 21482 21484 21485 21509 21511 21519 21530 21535 21536 21538 21540)
Piacenzian - Calabrian3.6 - 0.774Kenya (21433 21490)
Gelasian2.588 - 1.806Kenya (21376 21394 21398 21401 21404 21410 21412 21418 21420 21426 21446 21451 21457 21460 21461 21471 21474 21475 21477 21478 21483 21486 21488 21489 21497 21503 21504 21505 21517 21518 21537 21539 74512 32116 32120)
Gelasian - Calabrian2.588 - 0.774Kenya (21367 21370 21377 21378 21396 21402 21409 21411 21413 21415 21416 21419 21421 21422 21442 21444 21445 21448 21452 21453 21454 21456 21458 21462 21463 21464 21466 21467 21470 21472 21476 21492 21495 21496 21498 21499 21500 21502 21508 21513 21515 21516 21521 21522 21532 22349 22350 22351 74511 32051 32053 32055 32079 32080 32094 32117 32118 32122 178474)
Calabrian1.8 - 0.774Kenya (21368 21397 21403 21414 21441 21443 21447 21449 21450 21455 21465 21468 21469 21491 21493 21494 21501 21507 21514 21520 21523 21524 21525 21526 21527 21533 21534 32057 32058 32060 32063 32077 32081 32085 32087 32088 32089 32108 32111 32114 32121 32123)