Christa Placzek
Biographic Data
| ID | 4130517 |
|---|---|
| NAME | Christa Placzek |
| GIVEN NAMES | Christa |
| FAMILY NAME | Placzek |
| SIGNATURE | PLACZEK C |
| AFFILIATIONS | James Cook University |
| ORCID | 0000-0001-6524-8355 |
| VERIFIED | Yes |
| TOTAL WORKS | 6 |
| TOTAL CITATIONS | 2 |
| WORKS AS AUTHOR | 6 |
| WORKS AS EDITOR | 0 |
| FIRST PUBLICATION YEAR | 2001 |
| LATEST PUBLICATION YEAR | 2017 |
| H-INDEX | 1 |
Early human occupation of a maritime desert, Barrow Island, North-West Australia
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…
Stable isotopic composition of pedogenic carbonates from the eastern margin of the Thar Desert, Rajasthan, India
Holocene Lake-Level Fluctuations of Lake Aricota, Southern Peru
Lacustrine deposits exposed around Lake Aricota, Peru (17° 22′S), a 7.5-km 2 lake dammed by debris flows, provide a middle to late Holocene record of lake-level fluctuations. Chronological context for shoreline deposits was obtained from radiocarbon dating of vascular plant remains and other datable material with minimal 14 C reservoir effects ( 14 C yr B.P. and ended ∼2700 14 C yr B.P. Moderately high lake levels occurred at 1700 and 1300 14 C y…
Holocene Lake-Level Fluctuations of Lake Aricota, Southern Peru
Lacustrine deposits exposed around Lake Aricota, Peru (17° 22′S), a 7.5-km 2 lake dammed by debris flows, provide a middle to late Holocene record of lake-level fluctuations. Chronological context for shoreline deposits was obtained from radiocarbon dating of vascular plant remains and other datable material with minimal 14 C reservoir effects ( 14 C yr B.P. and ended ∼2700 14 C yr B.P. Moderately high lake levels occurred at 1700 and 1300 14 C y…
Stable isotopic composition of pedogenic carbonates from the eastern margin of the Thar Desert, Rajasthan, India
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
Early human occupation of a maritime desert, Barrow Island, North-West Australia
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 (6 works) · Geology (5 works) · Geology and Paleoclimatology Research (5 works) · Paleontology (4 works) · Pleistocene-Era Hominins and Archaeology (4 works) · Cave (3 works) · Ecology (3 works) · Physical geography (3 works) · Archaeology (2 works) · Archaeology and ancient environmental studies (2 works)