RT Journal Article
T1 The Iberian Middle Jurassic carbonate-platform system: Synthesis ofthe palaeogeographic elements of its eastern margin (Spain)
A1 Gómez Fernández, Juan José
A1 Fernández López, Sixto Rafael
AB During the Middle Jurassic, the domain of the Iberian and Catalan Coastal ranges of eastern Spain was occupied by a system offault-controlled carbonate platforms that flanked the Iberian Massif to the East. This platform system marked the transition betweenthe shelves of the Alpine Tethys and the Central Atlantic Ocean. The palaeogeographic reconstruction of the Iberian MiddleJurassic platform system is based on more than 199 surface sections and 37 wells. From southwest to northeast, eight mainpalaeogeographic elements with associated characteristic facies are recognized. These represent a system of horsts and grabens. Inthe southwest, the Internal Castilian Platform is characterized by the frequently dolomitized oolitic and restricted facies of theYemeda Formation. To the northeast, the NW-trending open-marine carbonate environments of the External Castilian andAragonese platforms were separated by the fault-controlled El Maestrazgo High that is characterized mainly by the dolomitizedRafales Formation. The External Castilian and Aragonese platforms consist from bottom to top of the microfilament mudstones towackestones of the El Pedregal Formation, the bioclastic and oolitic grainstones to packstones of the Moscardon Formation, andthe Domen˜o Formation, that reflects a return to an open-marine low-energy wackestone to mudstone facies, locally containingpatches of oolitic grainstones. The highly subsiding Tortosa Platform, represented by the Sant Blai, Cardo and La Tossa formations,is bounded by the dolomitic facies deposited on the El Maestrazgo and the Tarragona highs, and by the Catalan Massif where noMiddle Jurassic deposits have been recorded. The open-marine facies and condensed sections of the Beceite Strait separated theAragonese and Tortosa platforms. A regional stratigraphical gap spanning the upper Callovian Lamberti Zone to the lowerOxfordian Cordatum Zone is evident. A system of northwest- and northeast-trending normal faults controlled thickness and faciesdistribution. Data from the Iberian carbonate-platform system indicate that expanded sections were not necessarily associated withopen-marine environments. Condensed and expanded sections are developed in open and restricted-marine facies, even on suchpalaeogeographic highs as the El Maestrazgo High. Restricted and shallow-marine environments occasionally developed in parts ofthe External Castilian Platform.
PB Elsevier
SN 0031-0182
YR 2006
FD 2006
LK https://hdl.handle.net/20.500.14352/50209
UL https://hdl.handle.net/20.500.14352/50209
LA eng
DS Docta Complutense
RD 6 jul 2025