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M. A. Geyh and F. Thiedig, “The Middle Pleistocene Al Mahruqah Formation in the Murzuq Basin, Northern Sahara, Libya Evidence for the Orbitally-Forced Humid Episodes during the Last 500,000 Years,” Palaeogeography, Palaeoclimatology, Palaeoecology, Vol. 257, No. 1-2, 2008, pp. 1-21. doi:10.1016/j.palaeo.2007.07.001

has been cited by the following article:

• TITLE: Determining the Authenticity of Artifacts by Oxygen Isotope Analysis

  AUTHORS: Joel Kronfeld, Amnon Rosenfeld, Howard R. Feldman

  KEYWORDS: Oxygen Isotope; Patina; Artifact; Archaeology; Speleothem

  JOURNAL NAME: Open Journal of Geology, Vol.3 No.4, July 24, 2013

  ABSTRACT: A technique used to determine the authenticity of artifacts that compares the oxygen isotopic composition of speleothems to the carbonate included within the patina of unprovenanced artifacts is of questionable value. The unprovenanced Jehoash Inscription Tablet and James Ossuary are of potentially immense historical and cultural importance. Nevertheless, they both were rejected by workers based on the oxygen isotope technique which provided the major foundational evidence of forgery in the longest running archaeological trial in Israel. Nevertheless, both these artifacts were determined not to be forged. The initial incongruence between the oxygen isotopes of the speleothems of the Soreq cave (Israel) purported to represent the unique composition of Jerusalem rainfall, and the patina on the artifacts, can be readily explained by the accretion of materials and geo-biochemical processes expected in normal patina formation in the Jerusalem region. The patina formation involves sporadic events in disequilibrium kinetic processes that are opposed to the equilibrium formation of speleothems in a sealed cave. Moreover, 23 of 56 patina samples (41%) on well-documented ancient artifacts from Israel yielded oxygen isotope values greater or lower than the expected speleothem values of -4 δ18O ‰ [PDB] to -6 δ18O ‰ [PDB]. Thus, the speleothem-patina correlation is invalid and the applied oxygen isotopes technique for determining the authenticity of patinas on artifacts is not a useful tool in the authentication of artifacts.