Меловой период

Ruiz-Ortiz, P. A., Castro, J. M., de Gea, G. A., Jarvis, I., Molina, J. M., Nieto, L. M., Pancost, R. D., Quijano, M. L., Reolid, M., Skelton, P. W., and Weissert, H. J. (2016) New drilling of the early Aptian OAE1a: the Cau core (Prebetic Zone, south-eastern Spain) // Sci. Dril., Vol.21, P.41-46, doi:10.5194/sd-21-41-2016

http://www.sci-dril.net/21/41/2016/sd-21-41-2016.pdf