Christa J Placzek
Biographic Data
| ID | 3074568 |
|---|---|
| NAME | Christa J Placzek |
| GIVEN NAMES | Christa J |
| FAMILY NAME | Placzek |
| SIGNATURE | PLACZEK C J |
| AFFILIATIONS | James Cook University |
| VERIFIED | No |
| TOTAL WORKS | 3 |
| TOTAL CITATIONS | 2 |
| WORKS AS AUTHOR | 3 |
| WORKS AS EDITOR | 0 |
| FIRST PUBLICATION YEAR | 2011 |
| LATEST PUBLICATION YEAR | 2017 |
| H-INDEX | 1 |
The age of Homo naledi and associated sediments in the Rising Star Cave, South Africa
New ages for flowstone, sediments and fossil bones from the Dinaledi Chamber are presented. We combined optically stimulated luminescence dating of sediments with U-Th and palaeomagnetic analyses of flowstones to establish that all sediments containing Homo naledi fossils can be allocated to a single stratigraphic entity (sub-unit 3b), interpreted to be deposited between 236 ka and 414 ka. This result has been confirmed independently by dating th…
Using 10Be cosmogenic isotopes to estimate erosion rates and landscape changes during the Plio-Pleistocene in the Cradle of Humankind, South Africa
Isotopic tracers of paleohydrologic change in large lakes of the Bolivian Altiplano
We have developed an 87 Sr/ 86 Sr, 234 U/ 238 U, and δ 18 O data set from carbonates associated with late Quaternary paleolake cycles on the southern Bolivian Altiplano as a tool for tracking and understanding the causes of lake-level fluctuations. Distinctive groupings of 87 Sr/ 86 Sr ratios are observed. Ratios are highest for the Ouki lake cycle (120–95 ka) at 0.70932, lowest for Coipasa lake cycle (12.8–11.4 ka) at 0.70853, and intermediate a…
Isotopic tracers of paleohydrologic change in large lakes of the Bolivian Altiplano
We have developed an 87 Sr/ 86 Sr, 234 U/ 238 U, and δ 18 O data set from carbonates associated with late Quaternary paleolake cycles on the southern Bolivian Altiplano as a tool for tracking and understanding the causes of lake-level fluctuations. Distinctive groupings of 87 Sr/ 86 Sr ratios are observed. Ratios are highest for the Ouki lake cycle (120–95 ka) at 0.70932, lowest for Coipasa lake cycle (12.8–11.4 ka) at 0.70853, and intermediate a…
Using 10Be cosmogenic isotopes to estimate erosion rates and landscape changes during the Plio-Pleistocene in the Cradle of Humankind, South Africa
The age of Homo naledi and associated sediments in the Rising Star Cave, South Africa
New ages for flowstone, sediments and fossil bones from the Dinaledi Chamber are presented. We combined optically stimulated luminescence dating of sediments with U-Th and palaeomagnetic analyses of flowstones to establish that all sediments containing Homo naledi fossils can be allocated to a single stratigraphic entity (sub-unit 3b), interpreted to be deposited between 236 ka and 414 ka. This result has been confirmed independently by dating th…
Geography (3 works) · Geology (3 works) · Cave (2 works) · Ecology (2 works) · Geology and Paleoclimatology Research (2 works) · Geomorphology (2 works) · Paleontology (2 works) · Pleistocene-Era Hominins and Archaeology (2 works) · Structural basin (2 works) · Annual cycle (1 work)