Connected fluid evolution in fractured crystalline basement and overlying sediments, Pannonian Basin, SE Hungary

Juhasz, Attila; Tóth, Tivadar M.; Ramseyer, Karl; Matter, Albert

doi:10.1016/s0009-2541(01)00269-8

Cited by 41 publications

(79 citation statements)

References 37 publications

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“…commonly along deep and old structural weakness zones of the basement) that encountered a shallow subsurface zone of water-saturated filled sedimentary basins in the region [5]. The various thickness of the shallow marine and fluvio-lacustrine siliciclastic Neogene sedimentary infill [60][61][62][63][64][65] over the fractured, commonly karstic Mesozoic and Paleozoic carbonatic and metamorphic rock units [66][67][68], provided a combined aquifer that the rising mafic magma interacted with. As a result, the Pannonian Basin was a playground of phreatomagmatic volcanism through the Late Miocene to Pleistocene [58,69,70].…”

Section: Maars Related To Na-alkalic Rocksmentioning

confidence: 99%

Neogene-Quaternary Volcanic forms in the Carpathian-Pannonian Region: a review

et al. 2010

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Neogene to Quaternary volcanic/magmatic activity in the Carpathian-Pannonian Region (CPR) occurred between 21 and 0.1 Ma with a distinct migration in time from west to east. It shows a diverse compositional variation in response to a complex interplay of subduction with roll-back, back-arc extension, collision, slab break-off, delamination, strike-slip tectonics and microplate rotations, as well as in response to further evolution of magmas in the crustal environment by processes of differentiation, crustal contamination, anatexis and magma mixing. Since most of the primary volcanic forms have been affected by erosion, especially in areas of post-volcanic uplift, based on the level of erosion we distinguish: (1) areas eroded to the basement level, where paleovolcanic reconstruction is not possible; (2) deeply eroded volcanic forms with secondary morphology and possible paleovolcanic reconstruction; (3) eroded volcanic forms with remnants of original morphology preserved; and (4) the least eroded volcanic forms with original morphology quite well preserved. The large variety of volcanic forms present in the area can be grouped in a) monogenetic volcanoes and b) polygenetic volcanoes and their subsurface/intrusive counterparts that belong to various rock series found in the CPR such as calc-alkaline magmatic rock-types (felsic, intermediate and mafic varieties) and alkalic types including K-alkalic, shoshonitic, ultrapotassic and Na-alkalic. The following volcanic/subvolcanic forms have been identified: (i) domes, shield volcanoes, effusive cones, pyroclastic cones, stratovolcanoes and calderas with associated intrusive bodies for intermediate and basic calc-alkaline volcanism; (ii) domes, calderas and ignimbrite/ash-flow fields for felsic calc-alkaline volcanism and (iii) dome flows, shield volcanoes, maars, tuffcone/tuff-rings, scoria-cones with or without related lava flow/field and their erosional or subsurface forms (necks/ plugs, dykes, shallow intrusions, diatreme, lava lake) for various types of K-and Na-alkalic and ultrapotassic magmatism. Finally, we provide a summary of the eruptive history and distribution of volcanic forms in the CPR using several sub-region schemes.

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Section: Maars Related To Na-alkalic Rocksmentioning

confidence: 99%

Neogene-Quaternary Volcanic forms in the Carpathian-Pannonian Region: a review

et al. 2010

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“…In the case of Type 3 veins advection in open fractures is supported by the extensive appearance of laumontite crystals. Their shape and orientation suggest growth in suddenly opened fractures (Juhász et al 2002). The latest calcite microveins (Fig.…”

Section: B Szabó Et Almentioning

confidence: 98%

“…There is no fluid inclusion suitable for microthermometry in laumontite, because the single-phase (L) inclusions usually decrepitate at room temperature, presumably due to the "open-structure" of the crystals (Juhász et al 2002) (Fig. 10d).…”

Section: Central European Geology 52 2009mentioning

confidence: 99%

Paleofluid evolution of the fractured basalt hydrocarbon reservoir in the Üllés-Ruzsa-Bordány area, SE Hungary

Szabó¹,

Tóth²,

Schubert³

2009

Central European Geology

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Volcanic successions of the Kecel Basalt Formation (KBF) occur in the southern part of the Pannonian Basin. As a result of periodic submarine eruptions, the basaltic and pyroclastic rock horizons were intercalated with layers of the Late Miocene Endrod Marl Formation, which is regarded as one of the most important hydrocarbon source rocks in the area. The KBF was discovered through almost 30 wells between 2,200 and 2,900 meters of depth. Due to the high fracture porosity, some parts of the formation show good reservoir characteristics and act as important migration pathways of hydrocarbon-bearing fluids. Since the reservoir is presumably fracture-controlled, this study concentrates on the evolution of fractures crosscutting the rock body. Based on textural and mineralogical features, four distinct vein types can be distinguished, of which the first three types are discussed in this paper. Beside calcite, quartz, feldspar, and chlorite, the veins are cemented by various zeolite minerals. The vertical dimension of the dominant zeolite zone indicates the burial-diagenetic type of zeolite zonation and suggests subsidence of the subaqueous basalt after formation.

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“…During the Lower Miocene the lake basin started to be infilled rapidly from north-west and north-east by huge deltaic systems of rivers, originating in the surrounding Alpine and Carpathian mountain belts (bérczi & PhilliPs, 1985;jUhász, 1994;jelen et al 2006), being composed mainly of clays, clayey marls, calcareous sandstones and limestones which crop out on the surface in Slovenia. The prograding delta systems of Lake Pannon reached the area of the Mura-Zala basin about 8-9 Ma ago from the north, with a gradually extending sedimentary shelf behind them (jelen et al 2006;Uhrin et al, 2009).…”

Section: Settings Of the Investigated Mura-zala Sedimentary Basinmentioning

confidence: 99%

“…The prograding delta systems of Lake Pannon reached the area of the Mura-Zala basin about 8-9 Ma ago from the north, with a gradually extending sedimentary shelf behind them (jelen et al 2006;Uhrin et al, 2009). The deposited Late Miocene-Pliocene sedimentary succession is up to 2500-3000 m in thickness.…”

Section: Settings Of the Investigated Mura-zala Sedimentary Basinmentioning

confidence: 99%

Transboundary geothermal resources of the Mura-Zala basin:a need for joint thermal aquifer management of Slovenia and Hungary

Nádor¹,

Lapanje²,

Tóth³

et al. 2012

Geologija

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Large transboundary Upper Miocene geothermal sandy aquifers which are widely utilized by both countries for balneological and direct heat purposes exist in the Slovenian-Hungarian border region. In NE Slovenia the total direct heat use was 382 TJ in 2010, while in SW Hungary it was 648 TJ, including utilization from basement reservoirs. The total installed capacity of the 13 Slovenian users was 38.8 MW t , while that of the 29 Hungarian users was 70.6 MW t . Utilisation takes place without harmonized management strategies which might endanger the longterm sustainability of these systems. We aimed to overcome this by delineating a transboundary thermal groundwater body (TTGWB) Mura-Zala with an aerial extent of 4,974 km 2 and with vertical extent between depths 500-2,200 m, which was done based on detailed geological, hydrological, geochemical and geothermal models as well as numerical modelling. The regional groundwater flow in the Mura-Zala TTGWB is from west to east in general, the modeled cross-border flow is approximately 50 l/s. At present, thermal water abstraction rates from the Mura/ Újfalu Fm. (61.8 l/s in the Slovenian and 67.3 l/s in the Hungarian part of the TTGWB) does not endanger the good regional quantity status of the water body, and this should be maintained by allowing a maximum increase of thermal water abstraction 3.5 times higher than today. However, to achieve target numbers for an increased proportion of geothermal energy in the total energy mix in both countries, we suggest that increase of thermal efficiency and re-injection should be prioritized apart from the higher thermal water abstraction with setting up limit of the maximum allowable drawdown. Izvle~ekNa mejnem obmo~ju med Slovenijo in Madžarsko so razprostranjeni obsežni, prekomejni zgornjemiocenski geotermalni pe{~eni vodonosniki, ki se v obeh državah uporabljajo predvsem v balneolo{ke namene in za direktno rabo toplote. V severovzhodni Sloveniji je skupna direktna raba toplote v letu 2010 dosegla 382 TJ, v jugovzhodnem delu Madžarske pa 648 TJ, vklju~no z rabo vodonosnikov v podlagi neogenskih kamnin. Celotna in{talirana kapaciteta 13 slovenskih uporabnikov je zna{ala 38,8 MW t , medtem ko je in{talirana kapaciteta pri 29 madžarskih uporabnikih dosegla 70,6 MW t . Uporaba poteka brez usklajene strategije upravljanja, kar lahko ogrozi dolgoro~no vzdržnost teh sistemov. To smo želeli prese~i z opredelitvijo prekomejnega Mursko-Zalskega telesa termalne podzemne vode (VTPodV Mura-Zala) s povr{ino 4.974 km 2 in vertikalnim razponom globine 500-2200 m, dolo~enega na podlagi podrobnih geolo{kih, hidrogeolo{kih, geokemi~nih in geotermalnih modelov, kot tudi numeri~nega modela podzemne vode. Tok podzemne vode v VTPodV Mura-Zala je usmerjen pretežno v smeri zahod-vzhod, pri ~emer je prekomejni tok ocenjen na približno 50 l/s. Pri trenutni koli~ini odvzema termalne vode (~ 61,8 l/s iz slovenskega ter ~ 67,3 l/s iz madžarskega dela VTPodV Mura-Zala) koli~insko stanje telesa ni ogroženo, a njegovo dobro stanje je potrebno ohranjati ...

show abstract

Connected fluid evolution in fractured crystalline basement and overlying sediments, Pannonian Basin, SE Hungary

Cited by 41 publications

References 37 publications

Neogene-Quaternary Volcanic forms in the Carpathian-Pannonian Region: a review

Neogene-Quaternary Volcanic forms in the Carpathian-Pannonian Region: a review

Paleofluid evolution of the fractured basalt hydrocarbon reservoir in the Üllés-Ruzsa-Bordány area, SE Hungary

Transboundary geothermal resources of the Mura-Zala basin:a need for joint thermal aquifer management of Slovenia and Hungary

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