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Contact
Email
Thilo Bechstädt (Info)
Rainer Zühlke (Info)
Phone
+49 6221 54-8292
+49 6221 54-6055
Fax
+49 6221 54-5503
Thilo Bechstädt (Info)
Rainer Zühlke (Info)
Phone
+49 6221 54-8292
+49 6221 54-6055
Fax
+49 6221 54-5503
Project Login
Training CourseHydrothermal Dolomites: Outcrop-Reservoir Analogue Analysis |
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| Lecturer Prof. Dr. Thilo Bechstädt, GeoResources and University of Heidelberg Prof. Dr. Maria Boni, GeoResources and Universities of Heidelberg, Naples MSc Natalja Munoz, GeoResources and University of Heidelberg |
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Petroleum geologists and geophysicists working in epigenetic "hydrothermal" dolomite reservoirs. Key objective is an improved understanding of the relation to predecessor carbonates, geometries and poroperm properties of respective reservoirs and models of hydrothermal dolomitization based on outcrop analogues. The course language is English. Fees Depending on the number of participants and the location of the field course. Please contact courses@georesources.de for a specific offer. Location Field areas are located in the Cambrian basin of SW-Sardinia or in the Paleozoic Cantabrian Basin of N-Spain. Attendees Minimum 5, maximum 20. Dates Timing of th field course will be fixed according to client´s need. Please note, that possible time windows are mid-April to end-October for Sardinia and mid-April to mid-September for Spain (weather conditions). What you will learn (course outline) Large-scale, massive burial dolomitizations affected Paleozoic carbonates in many parts of the Variscan domain. These dolomites are excellently exposed in southwestern Sardinia near the coastline as well as in the Cantabrian Zone of northern Spain and represent excellent outcrop analogues for hydrocarbon reservoirs. In the two field areas, replacive and void-filling dolomites formed and were partly post-dated by calcite cementation. The process of dolomitization was driven by the circulation of hypersaline and hydrothermal marine-derived brines, controlled by rock anisotropies. Current models indicate, that the dolomites were formed in Early Permian, post-Variscan time. For the Cantabrian dolomites, a clear relationship with post-thrusting orocline formation in an extensional setting exists. Lithospheric delamination induced increased heat flow and allowed thermal convection of the fluids. The following topics are discussed: Geological setting, characteristics of the precursor rock, dolomite distribution and geometries of dolomitized bodies, macroscopic and microscopic features of the dolomites and of later calcites, dolomite types, mineralogy and stoichiometry of dolomites, major and minor element geochemistry, isotope geochemistry, fluid inclusions and other temperature parameters, poroperm types and regional distribution of porosity/permeability, type and controls of dolomitization, nature of dolomitizing fluids, thermal conditions, timing and tectonic setting, model of dolomitization, relevance for the petroleum industry. |
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