CIGEOBIO 24054
CENTRO DE INVESTIGACIONES DE LA GEOSFERA Y BIOSFERA
Unidad Ejecutora - UE
artículos
Título:
Mercury enrichment and Hg isotopes in CretaceousePaleogene boundary successions: Links to volcanism and palaeoenvironmental impacts
Autor/es:
L.D. LACERDA; M.K. PANDIT; S. CIRILLI; J.A. BARBOSA; JIUBIN CHEN; V.C. TEWARI; V.P. FERREIRA; C. KORTE; SIAL, ALCIDES N.; R. FREI; C. GAUCHER; SILVIO H. PERALTA; N.S. PEREIRA
Revista:
CRETACEOUS RESEARCH (PRINT)
Editorial:
ACADEMIC PRESS LTD-ELSEVIER SCIENCE LTD
Referencias:
Lugar: Amsterdam; Año: 2016 p. 60 - 81
ISSN:
0195-6671
Resumen:
We investigate the use of Hg as a proxy for volcanism by studying four distal and two proximal sectionsin relation to the Deccan volcanic center, straddling the CretaceousePaleogene (KPg) boundary at (a)Højerup (Denmark), Bottaccione and Padriciano (Italy), (b) Meghalaya and Jhilmili (India), and (c) Bajadadel Jagüel (Argentina). Hg sequestration by organic matter results in constant Hg/TOC ratio and linearcorrelation between Hg content of the sediments and total organic carbon (TOC).Elevated Hg concentrations that deviate from this linear relationship represent most likely true Hganomalies and these notable Hg/TOC spikes (all TOC
