Moeck-Beardsmore Play Types

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Moeck-Beardsmore Play Types

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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.
Other definitions:Wikipedia Reegle


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

  1. 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
  2. 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