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. (August 2017)

• Record Type: Journal Article
• Authors: Sial, A.N.; Chen, Jiubin; Lacerda, L.D.; Frei, R.; Tewari, V.C.; Pandit, M.K.; Gaucher, C.; Ferreira, V.P.; Cirilli, S.; Peralta, S.; Korte, C.; Barbosa, J.A.; Pereira, N.S.
• Is Part Of: Cretaceous research. Volume 76(2017)
• Page Start: 84
• Page End: 88
• Publication Date: 2017-08
• Subjects: K/Pg boundary -- Meghalaya -- Um Sohryngkew -- India -- Hg chemostratigraphy -- Hg isotopes; Geology, Stratigraphic -- Cretaceous -- Periodicals; 551.77
• DOI: 10.1016/j.cretres.2017.03.004
• Languages: English
• ISSNs: 0195-6671

Abstract

Abstract: 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.