Sedimentation, volcanism and subvolcanic intrusions in a late Palaeozoic intramontane trough (the Intra-Sudetic Basin, SW Poland)

Awdankiewicz, Marek

doi:10.1144/gsl.sp.2004.234.01.02

Cited by 18 publications

(25 citation statements)

References 8 publications

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“…3) include clastic deposits of alluvial fan, fluvial and lacustrine environments (Dziedzic and Teisseyre 1990). Intense tectonic activity during the Saxonian led to significant uplift of the ISB frames and substantial erosion of its elevated margins (Dziedzic and Teisseyre 1990;Awdankiewicz 2004). The Carboniferous and Permian development of the ISB was associated with three Variscan stages of volcanic/magmatic activity during:…”

Section: Geological Settingmentioning

confidence: 99%

Post-Variscan thermal history of the Intra-Sudetic Basin (Sudetes, Bohemian Massif) based on apatite fission track analysis

Botor

Anczkiewicz

Mazur

et al. 2019

Int J Earth Sci (Geol Rundsch)

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The Intra-Sudetic Basin, a ~ 12 km deep Variscan intramontane basin, has the best preserved post-orogenic sedimentary record available at the NE margin of the Bohemian Massif. Apatite fission track (AFT) analyses have been performed on 16 sedimentary and volcanic samples of Carboniferous to Cretaceous age from the Intra-Sudetic Basin to improve understanding of the post-Variscan thermal evolution. AFT central ages range from 50.1 ± 8.8 to 89.1 ± 7.1 Ma (Early Eocene to Coniacian), with 13 of them being Late Cretaceous. The mean track length values range from 12.5 ± 0.4 to 13.8 ± 0.5 (except for one sample 14.4 ± 0.2) µm. This relatively short mean track length together with the unimodal track length distributions and rather low standard deviation (0.8 to 1.7 µm) in most samples indicate a long stay in the partial annealing zone during slow cooling. However, in the northern part of the Intra-Sudetic Basin, samples show a wider track length distribution (standard deviation of 1.8 to 2.1 µm) that could indicate a more complex thermal evolution possibly related to Mesozoic reheating. Vitrinite reflectance data combined with thermal models based on the AFT results indicate that the Carboniferous strata reached maximum palaeotemperatures in the latest Carboniferous to Early Permian time, corresponding to a major coalification event. The second phase of temperature rise occurred due to Late Mesozoic sedimentary burial, but it had no influence on maturation of the Carboniferous organic matter. Final cooling phase in the Late Cretaceous-Paleogene was related to tectonic inversion of the Intra-Sudetic Basin, which occurred after deposition of a significant thickness of Cenomanian-Turonian sediments. Thermal modelling demonstrates that ~ 4 km thick cover of Upper Cretaceous sediments is required to obtain a good match between our AFT data and modelled time-temperature paths. This outcome supports a significant amount of Late Cretaceous-Paleogene inversion within the Variscan belt of Central Europe.

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Section: Geological Settingmentioning

confidence: 99%

Post-Variscan thermal history of the Intra-Sudetic Basin (Sudetes, Bohemian Massif) based on apatite fission track analysis

Botor

Anczkiewicz

Mazur

et al. 2019

Int J Earth Sci (Geol Rundsch)

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“…It has been sug gested that the erup tion of these tuffs re sulted in the for mation of a cal dera, ca. 10 km in di am e ter, in the cen tral part of the Intra-Sudetic Ba sin near Broumov (Awdankiewicz, 1999a(Awdankiewicz, , 2004. The Rožmitál Suc ces sion dis cussed in this pa per is a part of the vol cano-sed i men tary se quence over ly ing the Góry Suche Rhyolitic Tuffs in side the in ferred cal dera.…”

Section: Emplacement Of the Andesites And The Origin Of Related Volcamentioning

confidence: 83%

A Permian andesitic tuff ring at Rožmitál (the Intra-Sudetic Basin, Czech Republic) – evolution from explosive to effusive and high-level intrusive activity

Awdankiewicz

Rapprich

et al. 2014

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Mafic, monogenetic vol ca nism is in creas ingly rec og nized as a com mon man i fes ta tion of post-collisional vol ca nism in late Variscan, Permo-Car bon if er ous intramontane bas ins of Cen tral Eu rope. Al though iden ti fi ca tion of in di vid ual erup tive cen tres is not easy in these an cient suc ces sions, the Perm ian Rožmitál andesites in the Intra-Sudetic Ba sin (NE Bo he mian Mas sif) pro vide an ex cep tion ally de tailed re cord of ex plo sive, ef fu sive and high-level in tru sive ac tiv ity. Based on field study and petrographic and geo chem i cal data on pyroclastic and co her ent rocks, the Rožmitál Suc ces sion is in ter preted as the prox imal part of a tuff ring sev eral hun dred metres in di am e ter. Ini tial ac cu mu la tion of pyroclastic fall and surge de pos its oc curred dur ing phreatomagmatic erup tions, with tran si tions to wards Strombolian erup tions. Gul lies filled with re worked tephra doc ument pe ri ods of ero sion and redeposition. Andesitic blocky lavas capped the volcaniclastic suc ces sion. In va sion of lavas into un con sol i dated sed i ments and em place ment of shal low-level in tru sions in near-vent sec tions re sulted in the for ma tion of jigsaw-and ran domly-tex tured peperites. Most geo chem i cal dif fer ences be tween co her ent andesites and pyroclastic rocks can be linked to in cor po ra tion of quartz-rich sed i ments dur ing the ex plo sive erup tive pro cesses and to later ce men ta tion of the volcaniclastic de pos its by do lo mite. The Rožmitál tuff ring could have been one of sev eral phreatomagmatic cen tres in a monogenetic vol ca nic field lo cated on an al lu vial plain.

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“…This excess of mass may result from a shallow dense basaltic intrusion which was emplaced and outgassed within the feeding conduit of both craters. Such events have already been documented in similar cones (Awdankiewicz, 2004). To have a rough estimation of the depth of the basaltic intrusion, the observed gravity peaks were compared to the analytical solution of the gravity anomaly generated by an infinite vertical cylinder:…”

Section: Microgravimetrymentioning

confidence: 99%

Electric potential anomaly induced by humid air convection within Piton de La Fournaise volcano, La Réunion Island

et al. 2017

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a b s t r a c tSelf potential (SP) anomalies over Piton de La Fournaise volcano (La Réunion Island) are generally inter-preted as resulting from meteoritic water porous flow. However, there is no clear evidence that the subsurface is permanently saturated. Recently, a convective subsurface airflow has been evidenced within a quiescent cone at Piton de La Fournaise (Formica Leo). SP and thermal anomalies are reported on the unsaturated edifice and are seen to be correlated. It is proposed that the SP signal is generated by the movement of water films present on the porous matrix, induced by the intense humid airflow within Formica Leo. The structure of the cone, determined from electrical resistivity tomography (ERT), ground penetrating radar (GPR), microgravimetric and kinematic GPS data, is used to constrain a 3D numerical model of the air convection. The calculated temperature is then used to derive the related SP signal, the electrokinetic coupling coefficient being estimated from direct observations of the electrical resistivity of the soil. Extrapolating these results to the scale of the volcano, it is thus proposed that a cold humid air-flow enters the flanks of the 400 m-high terminal dome, flows up along the sloped and stratified volcanic layers before exiting through the vertical fractures around the Dolomieu collapse. It is demonstrated that the SP anomalies catches the main features recovered over the entire volcano. This result strongly sug-gests that humid airflow may play a major role on the generation of SP anomalies at Piton de la Fournaise volcano, and perhaps in other unsaturated volcanic edifices.

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Sedimentation, volcanism and subvolcanic intrusions in a late Palaeozoic intramontane trough (the Intra-Sudetic Basin, SW Poland)

Cited by 18 publications

References 8 publications

Post-Variscan thermal history of the Intra-Sudetic Basin (Sudetes, Bohemian Massif) based on apatite fission track analysis

Post-Variscan thermal history of the Intra-Sudetic Basin (Sudetes, Bohemian Massif) based on apatite fission track analysis

A Permian andesitic tuff ring at Rožmitál (the Intra-Sudetic Basin, Czech Republic) – evolution from explosive to effusive and high-level intrusive activity

Electric potential anomaly induced by humid air convection within Piton de La Fournaise volcano, La Réunion Island

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