Bone breccias, bone dumps, and sedimentary sequences of the western Limeworks, Makapansgat, South Africa.
J Hum Evol
; 52(4): 388-400, 2007 Apr.
Article
en En
| MEDLINE
| ID: mdl-17196239
ABSTRACT
The sediments in the western side of the Makapansgat Limeworks were either precipitated as speleothems, represented in the earlier massive deposits, or were deposited as coarsening clastic sediments, mainly representing later deposits. Between the earlier deposits and the main sedimentary phase, the stratigraphic sequence was inverted twice to a considerable height by the unusual deposition of subaqueous speleothem. Bone-bearing deposits, including the Main Quarry Bone Breccia and the well-known Grey Breccia belong, in time, to the lower part of the clastic deposits called the Red Silts. Australopith fossils have been found in the Grey Breccia dumped material and, in situ, from the dolomite clast breccia on the Main Quarry entrance buttress. Whatever the problems may be in provenancing some of the material from the Limeworks dumps, there is no doubt that the three rows of blocks on the southern side of the dumps belong to the Grey Breccia, and other rows contain red sediment sufficient for them to be safely associated with the Red Silts. There is no reason why this material should not be prepared with confidence as to its stratigraphic provenance. In any case, stratigraphic evidence, presented here, shows that there is little difference in time between the deposition of the bone-bearing breccias.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Sedimentos Geológicos
/
Fósiles
Límite:
Animals
País/Región como asunto:
Africa
Idioma:
En
Revista:
J Hum Evol
Año:
2007
Tipo del documento:
Article