Christiane Causse
Biographic Data
| ID | 191752 |
|---|---|
| NAME | Christiane Causse |
| GIVEN NAMES | Christiane |
| FAMILY NAME | Causse |
| SIGNATURE | CAUSSE C |
| AFFILIATIONS | Centre National de la Recherche Scientifique |
| VERIFIED | No |
| TOTAL WORKS | 7 |
| TOTAL CITATIONS | 3 |
| WORKS AS AUTHOR | 7 |
| WORKS AS EDITOR | 0 |
| FIRST PUBLICATION YEAR | 1989 |
| LATEST PUBLICATION YEAR | 2010 |
| H-INDEX | 1 |
Analyses archéométriques dans la grotte ornée Mayenne-Sciences (Thorigné-en-Charnie, Mayenne)
Cross dating (Th/U- 14 C) of calcite covering prehistoric paintings in Borneo
We present the first application of cross-dating (Th/U measured by thermo-ionization mass spectrometry (TIMS) and 14 C measured by accelerator mass spectrometry (AMS)) of calcite covering prehistoric paintings. Th/U age estimates of cave drapery range from 9800 to 27,300 yr B.P. while conventional 14 C age is estimated between 9900 and 7610 yr B.P. depending on the dead carbon correction. The age discrepancy is attributed to a disturbance of Th/U…
Paleoclimatic record of speleothems in a tropical region
Lake-Level Chronology on the Southern Bolivian Altiplano (18°–23°S) During Late-Glacial Time and the Early Holocene
Stratigraphic analyses of outcrops, shorelines, and diatoms from the southern Bolivian Altiplano (Uyuni-Coipasa basin) reveal two major lacustrine phases during the late-glacial period and the early Holocene, based on a chronology established by radiocarbon and U/Th control. A comparison of 14 C and 230 Th/ 234 U ages shows that during times of high lake level, radiocarbon ages are valid. However, during low-water periods, 14 C ages must be corre…
A petrological and geochemical study of the calcareous sandstone of West African marine Pleistocene (Cap des Biches, Senegal)
A Comparison of Radiocarbon and U/Th Ages on Continental Carbonates
Authigenic micrite from a playa in the northern Sahara has been dated by both the U/Th and 14 C methods. The U/Th ages can be a few thousand years greater or less than the 14 C ages obtained on the smallest crystals of micrite. The latter are considered to form a reasonable chronology for the Holocene deposits. The deviations of the U/Th ages are explained by quantifiable losses and gains of uranium under changing redox conditions. Under conditio…
The Late Pleistocene Laurentide Glacier
Direct information on the isotopic composition and timing of the now-vanished Laurentide glacier can be found in subglacial calcite or in early diagenetic concretions from glaciolacustrine deposits. Th/U isotopic measurements on early diagenetic concretions frome Lake Deschaillons varves (St. Lawrence Lowland, Québec) date the early Wisconsinan major ice advance at ca. 80,000 yr (isotopic stage 5a/4 transition). Significant retreat occurred at ca…
A Comparison of Radiocarbon and U/Th Ages on Continental Carbonates
Authigenic micrite from a playa in the northern Sahara has been dated by both the U/Th and 14 C methods. The U/Th ages can be a few thousand years greater or less than the 14 C ages obtained on the smallest crystals of micrite. The latter are considered to form a reasonable chronology for the Holocene deposits. The deviations of the U/Th ages are explained by quantifiable losses and gains of uranium under changing redox conditions. Under conditio…
The Late Pleistocene Laurentide Glacier
Direct information on the isotopic composition and timing of the now-vanished Laurentide glacier can be found in subglacial calcite or in early diagenetic concretions from glaciolacustrine deposits. Th/U isotopic measurements on early diagenetic concretions frome Lake Deschaillons varves (St. Lawrence Lowland, Québec) date the early Wisconsinan major ice advance at ca. 80,000 yr (isotopic stage 5a/4 transition). Significant retreat occurred at ca…
A Comparison of Radiocarbon and U/Th Ages on Continental Carbonates
Authigenic micrite from a playa in the northern Sahara has been dated by both the U/Th and 14 C methods. The U/Th ages can be a few thousand years greater or less than the 14 C ages obtained on the smallest crystals of micrite. The latter are considered to form a reasonable chronology for the Holocene deposits. The deviations of the U/Th ages are explained by quantifiable losses and gains of uranium under changing redox conditions. Under conditio…
A petrological and geochemical study of the calcareous sandstone of West African marine Pleistocene (Cap des Biches, Senegal)
Lake-Level Chronology on the Southern Bolivian Altiplano (18°–23°S) During Late-Glacial Time and the Early Holocene
Stratigraphic analyses of outcrops, shorelines, and diatoms from the southern Bolivian Altiplano (Uyuni-Coipasa basin) reveal two major lacustrine phases during the late-glacial period and the early Holocene, based on a chronology established by radiocarbon and U/Th control. A comparison of 14 C and 230 Th/ 234 U ages shows that during times of high lake level, radiocarbon ages are valid. However, during low-water periods, 14 C ages must be corre…
Paleoclimatic record of speleothems in a tropical region
Cross dating (Th/U- 14 C) of calcite covering prehistoric paintings in Borneo
We present the first application of cross-dating (Th/U measured by thermo-ionization mass spectrometry (TIMS) and 14 C measured by accelerator mass spectrometry (AMS)) of calcite covering prehistoric paintings. Th/U age estimates of cave drapery range from 9800 to 27,300 yr B.P. while conventional 14 C age is estimated between 9900 and 7610 yr B.P. depending on the dead carbon correction. The age discrepancy is attributed to a disturbance of Th/U…
Analyses archéométriques dans la grotte ornée Mayenne-Sciences (Thorigné-en-Charnie, Mayenne)
Geography (5 works) · Geology and Paleoclimatology Research (5 works) · Archaeology (4 works) · Calcite (3 works) · Cave (3 works) · Geochemistry (3 works) · Geological formations and processes (3 works) · Geology (3 works) · Geology (3 works) · Holocene (3 works)