Moeck-Beardsmore Play Types
From Open Energy Information
Moeck-Beardsmore Play Types:
Moeck and Beardsmore define a Geothermal Play as a model of a geothermal system consisting of the combination of structural position and geologic setting that create a recoverable geothermal resource. Geologic factors considered include the Reservoir Rock Unit representing the primary reservoir for thermal fluids and/or geothermal heat; the Heat Charge System, consisting of the Heat Source and Heat Transport mechanism sustaining the system; a possible Regional Topseal or Caprock acting as a trap for heat and/or thermal fluids in the system that allow commercial exploitation (not present in all play types); the Timing of the above three factors that generates a recoverable geothermal resource; and the Play Fairway, which considers the expected geographic extent of the play.
Type | Geologic Setting | Heat Source | Dominant Heat Transport Mechanism | Storage Properties of Reservoir | Regional Topseal or Caprock | Examples | ||
Convection Dominated | CV-1: Magmatic | CV-1a: Extrusive | Magmatic Arcs, Mid Oceanic Ridges, Hot Spots | Active Volcanism, Shallow Magma Chamber | Magmatic-hydrothermal Circulation | --- | Extensive Low Permeability Clay-rich Layers | Java |
CV-1b: Intrusive | Magmatic Arcs, Mid Oceanic Ridges, Hot Spots | Active Volcanism, Shallow Magma Chamber | Magmatic-hydrothermal Circulation, Fault Controlled | --- | --- | Taupo Volcanic Zone | ||
CV-2: Plutonic | CV-2a: Recent or Active Volcanism | Convergent Margins with Recent Plutonism (< 3 Ma), Young Orogens, Post-orogenic Phase | Young Intrusion+Extension, Felsic Pluton | Magmatic-hydrothermal Circulation, Fault Controlled | --- | --- | Larderello | |
CV-2b: Inactive Volcanism | Convergent Margins with Recent Plutonism (< 3 Ma), Young Orogens, Post-orogenic Phase | Young Intrusion+Extension, Felsic Pluton, Heat Producing Element in Rock | Hydrothermal Circulation, Fault Controlled | --- | Low Permeability Caprock | The Geysers | ||
CV-3: Extensional Domain | Metamorphic Core Complexes, Back-arc Extension, Pull-apart Basins, Intracontinental Rifts | Thinned Crust+Elevated Heatflow, Recent Extensional Domains | Fault Controlled, Hydrothermal Circulation | --- | --- | Basin and Range, Soultz-sous-Forêts | ||
Conduction Dominated | CD-1: Intracratonic Basin | Intracratonic/Rift Basins, Passive Margin Basins | Lithospheric Thinning and Subsidence | Litho/Biofacies Controlled | High Porosity/Low Permeability Sedimentary Aquifers | --- | North German Basin | |
CD-2: Orogenic Belt | Foreland Basins within Fold-and-thrust Belts | Crustal Loading and Subsidence Adjacent to Thickened Crust | Fault/Fracture Controlled, Litho/Biofacies Controlled | High Porosity/High Permeability or High Porosity/Low Permeability Sedimentary Aquifers | --- | Southern Canadian Cordillera, Molasse Basin | ||
CD-3: Crystalline Rock - Basement | Intrusion in Flat Terrain | Heat Producing Element in Rock, Hot Intrusive Rock | Hot Dry Rock, Fault/Fracture Controlled | Low Porosity/Low Permeability Intrusive Rock (Granite) | Insulating Caprock | Fenton Hill |
These values are part of Category:Moeck-Beardsmore Play Types, and are used for Property:MoeckBeardsmoreType.[1][2]
References
- ↑ Inga S. Moeck,Graeme Beardsmore. 2014. A New 'Geothermal Play Type' Catalog: Streamlining Exploration Decision Making. In: Proceedings. Thirty-Ninth Workshop on Geothermal Reservoir Engineering; 2014/02/24; Stanford, California. Stanford, California: Stanford University; p. 8
- ↑ Inga Moeck. 2013. Geothermal Plays in Geologic Settings. In: IGA Workshop on Developing Best Practice for Geothermal Exploration and Resource/Reserve Classification; 2013/11/14; Essen, Germany. IGA website: International Geothermal Association; p. 19