Metallogenesis

Luque, C.; García, Ernesto Martínez; Ruiz, F.

doi:10.1007/978-3-642-83980-1_6

Cited by 4 publications

(3 citation statements)

References 6 publications

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“…The pressures estimated from the analysis of the ore deposits (20-60 MPa; Luque & Martínez García, 1985;Luque, Martínez-García & Ruiz, 1990) agree with the thickness of the overburden (1-3 km) required to reach the temperature that gave rise to the CAI values obtained in the area with a normal geothermal gradient. The activity involved low-temperature fluid flow (100-200…”

Section: Discussionsupporting

confidence: 59%

“…• C (Loredo & García Iglesias, 1981;Luque & Martínez-García, 1985;Luque, Martínez-García & Ruiz, 1990), and low pressure (20-60 MPa; Luque & Martínez García, 1985;Luque, Martínez-García & Ruiz, 1990). Most of them are hosted by Carboniferous limestones and have a strongly associated dolomitization and silicification.…”

Section: S B L a N C O -F E R R E R A A N D Ot H E R Smentioning

confidence: 99%

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Conodont alteration and tectonothermal evolution of a diagenetic unit in the Iberian Variscan belt (Ponga-Cuera unit, NW Spain)

et al. 2010

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-Tectonothermal analysis of a mainly carbonate unit located in the external part of the Variscan orogen in NW Spain is dealt with using the conodont colour alteration index (CAI) and the study of textures of these microfossils. The Kübler index of the illite (KI) is used as a complementary method. The area is characterized by a great uniformity in the CAI values, which in most cases are < 2, indicating diagenetic conditions. In spite of the low CAI values, textures show great variety and were mainly originated by diagenetic processes of apatite dissolution and precipitation. The conodonts underwent a long period of heating (probably from the Pennsylvanian to the Cenozoic) to low temperatures (< 100• C) to reach the low CAI values measured. Assuming a normal geothermal gradient, these temperatures required an overburden < 3 km that in part was due to burial and in part to tectonic superimposition. Minor local anomalies in the CAI values and some textural alterations, related to dissolution and precipitation of authigenic minerals, could be due to epithermal activity that gave rise to various ore deposits in the studied area mainly during Permian times.

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Section: Discussionsupporting

confidence: 59%

Section: S B L a N C O -F E R R E R A A N D Ot H E R Smentioning

confidence: 99%

Conodont alteration and tectonothermal evolution of a diagenetic unit in the Iberian Variscan belt (Ponga-Cuera unit, NW Spain)

et al. 2010

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“…Therefore, any related fluid activity that may reflect anomalous thermal gradients can be expected to have left an imprint upon the Stephanian clastic deposits and coals, either during or after their deposition (Frings et al 2004;Botor 2012). Moreover, the abundance of hydrothermal mineralization and ore deposits in the Palaeozoic rocks (mainly in Carboniferous) related to regional faults constitutes the important metallogenic feature of the SCZ (Luque et al 1990). Mineralization took place in Permian times and was associated with an extensional stress regime with a fluid temperature range of 100-300 °C (e.g.…”

Section: Geological Settingmentioning

confidence: 99%