2024-03-29T06:46:55Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/1522522019-02-21T07:52:50Zcom_10261_82com_10261_8col_10261_335
Portable X-ray fluorescence identification of the Cretaceous–Paleogene boundary: Application to the Agost and Caravaca sections, SE Spain
Ibáñez Insa, Jordi
Pérez-Cano, J.
Fondevilla, V.
Oms, O.
Rejas, Marta
Fernandez-Turiel, J. L.
Anadón, Pere
Generalitat de Catalunya
Ministerio de Economía, Industria y Competitividad (España)
X-ray fluorescence spectrometry
Cretaceous–Tertiary boundary
Geochemistry
Chicxulub impact
It is shown that portable X-ray fluorescence (pXRF) is a powerful tool for the identification and geochemical characterization of prospective Cretaceous–Paleogene (K–Pg) boundary sites. Field measurements in two well-known K–Pg boundary sequences, located at Agost and Caravaca, SE Spain, have been performed. A sizable enrichment around the K–Pg horizon of several elements such as K, Ti, Fe, Ni, Cr, Cu, Zn, As or Pb, together with a strong reduction in the Ca content, is found with the pXRF instrument. These observations represent a primary geochemical signature of the K–Pg boundary in distal marine sections such as those of Agost and Caravaca. Also, the intensities of the pXRF peaks correlate well with elemental composition data obtained by inductively coupled plasma-mass spectrometry (ICP-MS) on collected samples. Hence, the pXRF field measurements are shown to provide fast and useful quantitative information about K–Pg boundary sequences.
2017-07-03T07:59:11Z
2017-07-03T07:59:11Z
2017-06
artículo
Cretaceous Research, 78: 139–148 (2017)
0195-6671
http://hdl.handle.net/10261/152252
1095-998X
http://dx.doi.org/10.13039/501100002809
http://dx.doi.org/10.13039/501100010198
eng
https://doi.org/10.1016/j.cretres.2017.06.004
Sí
openAccess
Elsevier