RT Journal Article
T1 Reconstrucción de la evolución diagenética de la formación arrecifal de Torrecilla en Cameros (Kimmeridgiense Inferior) durante el desarrollo de la discontinuidad situada a techo (Puerto de Bigornia, provincia de Soria, España)
A1 Benito Moreno, María Isabel
A1 Mas Mayoral, José Ramón
A1 Lohmann, K.C.
AB Detailed petrography, and fine-scale geochemical and isotopic analysis of diagenetic phases of the Kimmeridgian reefal Torrecilla en Cameros Formation of Northern Iberian Ranges indicate a complex history of early meteoric diagenesis. This reefal succession underwent extensive alteration by meteoric waters prior to the deposition of the overlying Tithonian-Berriasian continental deposits. Although the continental facies are separated from the reefal unit by a single unconformity, a record o f three distinct episodes of alteration by meteoric waters, infused at this single hiatal surface, is preserved in the succession of calcite cements present within the underlying reefal unit. The first episode of meteoric alteration resulted in the precipitation of a first generation of calcite (Cement I). Two later generations (Cement II and III) were emplaced throughout the reefal unit. Although similar in petrography to Cement I, these phases are distinct in their isotopic composition, reflecting changes in the regional climate of the Iberia during the early Tithonian. Overlying continental units, in turn, record yet another episode of alteration by meteoric waters as non-ferroan calcite cements formed within the lacustrine limestones. These cements are also distinct based on their petrographic and geochemical character.
PB Sociedad Geológica de España
SN 1576-5172
YR 2000
FD 2000
LK https://hdl.handle.net/20.500.14352/105280
UL https://hdl.handle.net/20.500.14352/105280
LA spa
NO Benito Moreno, M.I., Mas Mayoral, J.R. y Lohmann, K.C. (2000): «Reconstrucción de la evolución diagenètica de la formación arrecifal de Torrecilla en Cameros (Kimmeridgiense Inferior) durante el desarrollo de la discontinuidad situada a techo (Puerto de Bigornia, provincia de Soria, España)», Geotemas (Madrid), 1, pp. 203-207.
NO Publicación derivada del V Congreso Geológico de España (Alicante, 10-14 julio 2000)
NO Ministerio de Educación y Cultura (España)
DS Docta Complutense
RD 6 abr 2025