Reply to comments by Sanjay K. Mukhopadhyay, Sucharita Pal, J. P. Shrivastava on the paper by Sial et al. (2016) Mercury enrichments and Hg isotopes in Cretaceous–Paleogene boundary successions: Links to volcanism and palaeoenvironmental impacts. Cretaceous Research 66, 60–81

One key to address the issue of the location of the K/Pg boundary at the Um Sohryngkew sections to look at Ccarb, Corg, Hg/TOC, Mo/Al chemostratigraphies, alongside Hg isotopes, in previous studied K/Pg sections in the Meghalaya area, and compare them with same type of data reported in Sial et al. (2016). The possibility of diachronic deposition cannot be totally discarded, and the K/Pg boundary could have been recorded in the Langpar Formation at one site and in the contact between the Mahadeo and Langpar formations in another. A tectonic-induced doubling of the sequence is also possible as the Meghalaya area, within the Shillong plateau, has been linked to a number of kinematic changes, including pop-up tectonics, since the Cretaceous.Fil: Sial, Alcídes Nóbrega. Universidade Federal de Pernambuco; BrasilFil: Chen, Jiubin. Chinese Academy of Sciences; República de ChinaFil: Lacerda, L. D.. Universidade Estadual do Ceará; BrasilFil: Frei, Robert. Universidad de Copenhagen; Dinamarca. Nordic Center for Earth Evolution; DinamarcaFil: Tewari, Vinod Chandra. Sikkim University; IndiaFil: Pandit, Manoj K.. University of Rajasthan; IndiaFil: Gaucher, Claudio. Universidad de la República. Facultad de Ciencias; UruguayFil: Ferreira, Valderéz Pinto P.. Universidade Federal de Pernambuco; BrasilFil: Cirilli, Simonetta. Università di Perugia; ItaliaFil: Peralta, Silvio Heriberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Centro de Investigaciones de la Geosfera y Biosfera. Universidad Nacional de San Juan. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones de la Geosfera y Biosfera; ArgentinaFil: Korte, Christoph. Universidad de Copenhagen; Dinamarca. Nordic Center for Earth Evolution; DinamarcaFil: Barbosa, José Antonio. Universidade Federal de Pernambuco; BrasilFil: Pereira, Natan. Universidade Federal da Bahia; Brasi