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APAME Informe resumido

Project ID: ICA3-CT-2002-10024
Financiado con arreglo a: FP5-INCO 2
País: Germany

Radiocarbon dating and their application to paleoseismology and archeoseismology

Precise 14C dating of the archaeological and paleoseismological sites was achieved by Partner 2 (U. Kiel) in collaboration with the different partners involved in the study of sites. In addition, methodological research was carried out to improve the reliability of 14C sample preparation for low carbon content samples, which are common in the region. A time frame related to the different civilizations that occupied the region was also established by including the information gathered by the partners in the catalogues and from the excavations. In Jordan, the two sites studied in collaboration with Partner 1 and Partner 7 at Karameh and Tell Saidiyyeh, were both faulting studies. A total of 38 samples (17 and 18 from Karameh and Tell Sadiyyeh respectively) were dated to give age boundaries to the observed faulting episodes. Both datasets proved very difficult to interpret.

In Lebanon, four seismic/faulting excavation sites were dated in Lebanon: TIS, Deir-al-Achayer, Jarmaq, and Rachaya, in collaboration with Partner1. The TIS site proved very difficult to date due to the very low carbon content of the samples from the site. Three dates were measured and indicate an event more than 150 years ago. No older limit could be established. Five 14C dates were measured from Deir-al-Achayer. The site of Jarmaq with 7 dates provided a correlation between a bracketted faulting event and the 1837 large earthquake. At the Rachaya site, 22 dates were obtained and shows the faulting episodes during the late Holocene time, among them the most recent event of 1759 is well defined.

In Syria, the 14C results of the archaeological excavations carried out in Der Dahess by Partner 6 and Partner 4 led to the conclusion that after a destruction of the monastery complex around 540 AD (526 AD earthquake in the seismicity catalogue) during the Byzantine period further signs of occupation might have no connections to earthquakes. A series of samples obtained from Crak des Chevaliers by partner 4, Directorate General of Antiquities, Syria, provided evidence of seismic activity extending from the late 10th Century up till the 15th Century, from the Early Islamic period to the Mamluk period. The Al Harif Roman aqueduct that was affected by past earthquakes, as it crosses the fault, was extensively studied and sampled (108 results) by Partners 1, 2 and 4. The construction is covered by travertine, a carbonate deposit that reached 80 cm on the north side of the wall. The 108 14C results lead to ambiguous conclusions so the cores were sampled for stable 18O and 13C in the hope to match these results with known climate records. The travertine has recorded 4 events after in construction between A.D. 1 and 120. Two could be of seismic or human origin, around A.D. 340 and A.D. 1150. The other two, around A.D. 660 and A.D. 1070 were probably caused by seismic events. Furthermore, 104 14C results were obtained from samples taken in trenches and the results are consistent with the occurrence of.

In Turkey, nine sites were studied in collaboration with Partner 1 and Partner 8. We obtained 4 results in Bosin, 9 results in Demirkopru, in Hanimaga, 18 results Harabe, 1 result in Imalu, 4 results in Lake, 19 results in Yazlik, 3 results in Yolu, and 11 results in Ziyaret. Most of the Turkish sites were locates in the Amik basin and proved carbon poor. However, the results clearly show a correlation with the 1408 earthquake along the DSF.

Finally, ten plates show a map of the fault as prepared by Partner 1 and to the right representation of the earthquake references as shown contained in the Catalogue of Historical Earthquakes according to time and latitude, which can visualise the recurrence of seismic events.

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Reported by

KIEL UNIVERSITY
LEIBNIZ-LAB. ALTERSBEST ISOTOPENFOR. CHRISTIAN-ALBRECHTS-UNIVERSITAT
24118 KIEL
Germany
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