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| Content Provider | Springer Nature Link |
|---|---|
| Author | Busby, Jon |
| Copyright Year | 2013 |
| Abstract | Deep onshore Mesozoic basins have favourable geothermal aquifers at depth comprising basal Permo-Triassic sandstones. The principal basins are the Wessex and Worcester (southern England), Cheshire (northwest England), Eastern England, Larne and Lough Neagh (Northern Ireland). Measured temperatures are up to 80 °C and could reach 100 °C in the deepest parts of some of the basins. Porosity and permeability data from depth are limited, but values high enough to allow adequate yields have been measured in many of the basins. Productive sandstones vary from a few tens of metres to hundreds of metres thick resulting in productive transmissivities. The estimated heat in place (Inferred Geothermal Resource) has been calculated as 201 × 10$^{18}$ to 328 × 10$^{18}$ J. New heat demand maps illustrate that many of the centres of high heat use are coincident with Upper Palaeozoic basins. Within the Carboniferous and Devonian there are thick sequences of deeply buried arenaceous deposits. Some productive local aquifers occur at shallow depth, but most depend on fissure flow that is anticipated to diminish rapidly with depth. The exception may be the Carboniferous Limestone where warm springs and a pronounced thermal anomaly in Eastern England demonstrate groundwater flow at depth, possibly along pathways of many kilometers.Les bassins sédimentaires mésozoïques continentaux profonds possèdent des aquifères avec un potentiel géothermique à la profondeur interceptant les grès permiens triasiques de base. Les principaux bassins sont les bassins du Wessex et Worcester (Sud de l’Angleterre), de Cheshire (Nord-Ouest de l’Angleterre), l’est de l’Angleterre avec le bassin de Larne et le bassin de Lough Neagh (Nord de l’Irlande). Les températures mesurées sont de 80°C et peuvent atteindre 100 °C dans les parties les plus profondes de certains bassins. Les données de porosité et de conductivité hydraulique sont limitées, mais des valeurs suffisamment élevées pour assurer des rendements satisfaisants ont été mesurées dans les bassins. Les grès productifs ont une épaisseur comprise entre quelques dizaines de mères à plusieurs centaines de mètres, leur conférant des transmissivités productives. La chaleur estimée en place (Resource géothermale présupposée) a été calculée avec des valeurs comprises entre 201 × 10$^{18}$ et 328 × 10$^{18}$ J. Des cartes de nouvelles demandes en chaleur indiquent que plusieurs secteurs avec une chaleur importante coïncident avec les bassins du Paléozoïque supérieur. Au sein du Carbonifère et du Dévonien, il y a des séquences épaisses de dépôts profonds sableux. Des aquifères productifs localement prennent place à de faible profondeur, mais la plupart dépend d’écoulements en zone fissurée qui sont supposés diminuer rapidement avec la profondeur. Les calcaires du Carbonifères peuvent constituer une exception avec la présence de sources chaudes et d’une anomalie thermique dans l’Est de l’Angleterre, attestant de l’existence d’écoulements d’eau souterraine en profondeur, peut être avec des cheminements sur plusieurs kilomètres.Las cuencas profundas continentales del Mesozoico tienen acuíferos geotérmicos favorables a profundidades que comprenden a las areniscas basales del Permo-Triasico. Las cuencas principales son las de Wessex y Worcester (sur de Inglaterra), Cheshire (noroeste de Inglaterra), Eastern England, Larne y Lough Neagh (Norte de Irlanda). Las temperaturas medidas llegan hasta 80 °C y pueden alcanzar 100 °C en las partes más profundas de algunas de las cuencas. Los datos de porosidad y permeabilidad en profundidad son limitados, pero se han medido valores suficientemente altos como para permitir rendimientos adecuados en muchas de las cuencas. Las areniscas productivas varían desde unos pocas decenas de metros a centenas de metros de espesor que resultan en transmisividades productivas. El calor estimado en el sitio (Recurso Geotérmico Inferido) ha sido calculado entre 201 × 10$^{18}$ y 328 × 10$^{18}$ J. Los nuevos mapas de demanda de calor ilustran que muchos de los centros de uso de alto calor son coincidentes con las cuencas del Paleozoico Superior. Dentro del Carbónico y Devónico hay secuencias espesas de depósitos arenosos profundamente enterrados. Algunos acuíferos locales productivos se encuentran a profundidades someras, pero la mayoría depende del flujo en fisuras que se anticipa como disminuyendo rápidamente con la profundidad. La excepción pueden ser las Calizas Carbónicas donde manantiales cálidos y una pronunciada anomalía térmica en el este de Inglaterra demuestran flujo de agua subterránea en profundidad, posiblemente a lo largo de trayectorias de muchos kilómetros.深的、陆上中生代盆地在包含基底二叠--三叠砂岩的深度具有良好的地热含水层。主要盆地有Wessex和Worcester (英国南部), Cheshire (英国西北部), 英国东部、 Larne 和Lough Neagh (爱尔兰北部)。测得的温度高达80 °C, 在有些盆地的最深部能 达到100 °C。深部的孔隙度和透水率资料有限, 但数值足够能使许多盆地充足的出水量得到测量。产水的砂岩厚度从几十米到几百米, 致使导水系数能达到产水的程度。有些地方的热量估算为201 × 10$^{18}$ to 328 × 10$^{18}$ J。新的热能需求图显示许多高热能利用中心与上古生代盆地一致。在石炭纪和泥盆纪内, 存在很厚深埋的沙质沉积序列。有些产水的局部含水层出现在浅部, 但大部分依靠裂隙流, 这些裂隙流一般随深度增加迅速减少。石炭纪石灰岩层可能是个例外, 在英国东部这个岩层温泉及显著的热异常证明在深部有地下水流, 水流可能沿数公里长的通道流动。As bacias Mesozoicas profundas onshore possuem em profundidade aquíferos potencialmente geotérmicos constituídos por arenitos basais Permo-Triássicos. As principais bacias são as de Wessex e Worcester (sul de Inglaterra), Cheshire (noroeste da Inglaterra), Leste da Inglaterra, Larne e Lough Neagh (Irlanda do Norte). As temperaturas registadas ultrapassam 80°C, podendo atingir 100°C nas zonas mais profundas de algumas das bacias. Os valores da porosidade e da permeabilidade, a partir de dados de profundidade, são limitados, mas os valores são suficientemente elevados para admitir que foram avaliados rendimentos adequados em muitas das bacias. Os arenitos produtivos variam de algumas dezenas a centenas de metros de espessura, resultando em transmissividades produtivas. O potencial calorífico estimado in-situ (recurso geotérmico inferido) foi calculado como 201 × 10$^{18}$ a 328 × 10$^{18}$ J. Novos mapas de calor ilustram que muitos dos centros de elevado uso de calor são coincidentes com as bacias do Paleozóico Superior. No Devónico e Carbónico existem sequências espessas de depósitos arenosos profundamente enterrados. Alguns aquíferos locais produtivos ocorrem a profundidades baixas, mas a maioria depende do fluxo fissural que previsivelmente diminui rapidamente com a profundidade. A exceção podem ser os calcários carbónicos, onde nascentes quentes e uma anomalia térmica acentuada, no leste da Inglaterra, revelam fluxo de água subterrânea em profundidade, possivelmente ao longo de muitos quilómetros. |
| Starting Page | 129 |
| Ending Page | 141 |
| Page Count | 13 |
| File Format | |
| ISSN | 14312174 |
| Journal | Hydrogeology Journal |
| Volume Number | 22 |
| Issue Number | 1 |
| e-ISSN | 14350157 |
| Language | Portuguese |
| Publisher | Springer Berlin Heidelberg |
| Publisher Date | 2013-10-19 |
| Publisher Institution | International Association of Hydrogeologists |
| Publisher Place | Berlin, Heidelberg |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Thermal conditions UK Geothermal resources Sedimentary basins Renewable heat Hydrogeology Hydrology/Water Resources Geology Waste Water Technology Water Pollution Control Water Management Aquatic Pollution |
| Content Type | Text |
| Resource Type | Article |
| Subject | Earth and Planetary Sciences Water Science and Technology |
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