J. Cyziene - Academia.edu (original) (raw)

Papers by J. Cyziene

Baltica, 2015

The article contains results obtained from realization of the Polish and Lithuanian Baltic case s... more The article contains results obtained from realization of the Polish and Lithuanian Baltic case study within the EU – FP 7 SubCoast project, which one of the primary aims was analysis of vertical ground movements, potentially causing geohazards in the coastal areas. To reach this goal Interferometric Synthetic Aperture Radar (InSAR) data were obtained. For the Polish and Lithuanian Baltic coast ERS archive radar data were processed in order to provide Permanent Scatterer (PSInSAR, PSI) results that were then used to create the new innovative product – Dynamic DEM (DDEM). The deformation model defined by the SubCoast project normally needs to be created by merging InSAR, satellite navigation (GNSS), optical leveling and/or gravimetry measurements. Elaboration of DDEM enables more effective comparison between PS and tectonic features. Comparison of PS time series with groundwater changes shows a direct correlation, confirming impact of groundwater on subsidence or uplift of the ground...

Acta Geologica Polonica, 2008

The conditions and timing of carbonate cementation in Cambrian sandstones of the Baltic sedimenta... more The conditions and timing of carbonate cementation in Cambrian sandstones of the Baltic sedimentary basin were determined by oxygen and carbon stable isotope and chemical data in combination with optical and cathodoluminescence petrographic studies. Studied samples represent a range in present burial depth from 340 to 2150 m. The carbonate cement is dominantly ferroan dolomite that occurs as dispersed patches of poikilotopic crystals. Temperatures of dolomite precipitation, based on δ 18 O values, range from27°C in the shallow buried to 95°C in the deep buried sandstones. The burial historymodelling points to development ofmost of the dolomite cement during rapid Silurian-Devonian subsidence and Carboniferous-early Permian uplift. Awide range of precipitation temperatures indicate that temperature was not a major factor in triggering the carbonate cementation. Dolomite precipitation is related to early stages of organic matter maturation and thus to the oil generation history in the...

63rd EAGE Conference & Exhibition, 2001

Studia Geophysica et Geodaetica, 2008

The PASSEQ 2006-2008 project (PASsive Seismic Experiment in TESZ) focuses on understanding the de... more The PASSEQ 2006-2008 project (PASsive Seismic Experiment in TESZ) focuses on understanding the deep seismic structure across the transition between the old Proterozoic platform of north and eastern Europe and the younger Phanerozoic platform in central Europe. The experiment was only possible thanks to a great international effort that involved 17 institutions from Europe and the USA. A total of 139 three-component temporary shortperiod and 49 temporary broad-band seismic stations provided continuous recordings between May 2006 and June 2008 with the main period of recordings during 2007, along about 1200 km long and 400 km wide array running from Germany through the Czech Republic and Poland to Lithuania. The average spacing between all stations was about 60 km, attaining about 20 km in the central part. The configuration of the seismic network was a compromise among needs of different seismic methods. The dense central profile allows the use of modern passive 2-D imaging techniques, while the distribution of broad-band sensors was designed for surface wave and receiver function studies of the upper mantle down to the transition zone in a wide frequency range. The configuration will allow us to evaluate 3-D structures. The array also includes permanent stations of the national observatories within the area of the experiment. All raw data from temporary seismic stations are archived in their original formats on at least two different media and in two sites. Additionally, all continuous data have been converted to the miniSEED format and along with transfer functions for sensors and data loggers (dataless volumes) are stored at the GEOFON Data Center in Potsdam. It has bee agreed that all continuous data will be available for members of the PASSEQ Working Group exclusively for three years after the database is completed, and then will be open to the scientific community. Data from the dense array of stations will allow us to map the upper mantle structure, e.g., the contrast, sharpness and topography of seismic discontinuities, with much higher resolution than previously. We expect to reveal variations of seismic velocities within the upper mantle around the contact zone of the Proterozoic platform and younger mobile belts down to the transition zone by applying body-and surface-wave tomography, as well as the receiver function techniques. Analysis of shear wave splitting of teleseismic SKS waves and analysis of P residuals and converted waves will resolve variations of anisotropy across the TESZ. Joint inversions of independent datasets will provide more realistic 3-D models of the upper mantle than single methods. We will present data examples and initial results from SKS splitting, surface wave and receiver function analysis.

Sedimentary Geology, 2007

Quartz is an import cementing material in siliciclastic sandstones that can reduce porosity and p... more Quartz is an import cementing material in siliciclastic sandstones that can reduce porosity and permeability severely. For efficiently predicting and extrapolating petrophysical properties such as porosity and permeability, the controls on the occurrence and the degree of quartz cementation need to be better understood. Toward this end, a succession of Cambrian marine quartz arenites in Lithuania, at a present burial depth ranging from about 1 to 2 km, has been studied. In the central part of the Baltic Basin these quartz arenites are heavily cemented by quartz and the degree of quartz cementation is the main control on reservoir properties. On a regional Baltic Basin scale, the amount of quartz cement, and inversely the porosity and permeability, are correlated to burial depth and palaeotemperature. Porosity of the sandstones in the Baltic Basin flanks is around 23-28% and decreases toward the west to 15-18% in the central part and to 2-4% in west Lithuania. However, superposed on general trends between petrophysical properties and depth, large variations exist even between closely spaced wells making forward prediction of reservoir quality difficult. Evidently, factors other than general physical conditions and overall chemical conditions related to burial depth must have locally influenced the processes of quartz cementation and controlled the location and amounts of quartz cement. Such local factors are detrital composition, sedimentary structures and reservoir architecture, inherent to depositional facies. Clayinduced chemical compaction and pressure dissolution of detrital quartz at shale-sandstone contacts and within thin shale lamina is probably the main process yielding silica for local quartz cement. The supply of silica for quartz cement in the sandstones is thus dependent on the number of thin clay lamina and clay intercalations within the reservoir sandstones. The sandstone/shale ratio and thickness of sandstone bodies control the location and the degree of quartz cementation and thus reservoir quality.

Geophysical Journal International, 2014

The Mohorovičić discontinuity, Moho for short, which marks the boundary between crust and mantle,... more The Mohorovičić discontinuity, Moho for short, which marks the boundary between crust and mantle, is the main first-order structure within the lithosphere. Geodynamics and tectonic evolution determine its depth level and properties. Here, we present a map of the Moho in central Europe across the Teisseyre-Tornquist Zone, a region for which a number of previous studies are available. Our results are based on homogeneous and consistent processing of P-and S-receiver functions for the largest passive seismological data set in this region yet, consisting of more than 40 000 receiver functions from almost 500 station. Besides, we also provide new results for the crustal v P /v S ratio for the whole area. Our results are in good agreement with previous, more localized receiver function studies, as well as with the interpretation of seismic profiles, while at the same time resolving a higher level of detail than previous maps covering the area, for example regarding the Eifel Plume region, Rhine Graben and northern Alps. The close correspondence with the seismic data regarding crustal structure also increases confidence in use of the data in crustal corrections and the imaging of deeper structure, for which no independent seismic information is available. In addition to the pronounced, stepwise transition from crustal thicknesses of 30 km in Phanerozoic Europe to more than 45 beneath the East European Craton, we can distinguish other terrane boundaries based on Moho depth as well as average crustal v P /v S ratio and Moho phase amplitudes. The terranes with distinct crustal properties span a wide range of ages, from Palaeoproterozoic in Lithuania to Cenozoic in the Alps, reflecting the complex tectonic history of Europe. Crustal thickness and properties in the study area are also markedly influenced by tectonic overprinting, for example the formation of the Central European Basin System, and the European Cenozoic Rift System. In the areas affected by Cenozoic rifting and volcanism, thinning of the crust corresponds to lithospheric updoming reported in recent surface wave and S-receiver function studies, as expected for thermally induced deformation. The same correlation applies for crustal thickening, not only across the Trans-European Suture Zone, but also within the southern part of the Bohemian Massif. A high Poisson's ratio of 0.27 is obtained for the craton, which is consistent with a thick mafic lower crust. In contrast, we typically find Poisson's ratios around 0.25 for Phanerozoic Europe outside of deep sedimentary basins. Mapping of the thickness of the shallowest crustal layer, that is low-velocity sediments or weathered rock, indicates values in excess of 6 km for the most pronounced basins in the study area, while thicknesses of less than 4 km are found within the craton, central Germany and most of the Czech Republic.

69th EAGE Conference and Exhibition incorporating SPE EUROPEC 2007, 2007

Studia Geophysica et Geodaetica, 2008

Geological Society of America Bulletin, 2008

ABSTRACT Currently, the question of whether or not the presence of oil in sandstone inhibits quar... more ABSTRACT Currently, the question of whether or not the presence of oil in sandstone inhibits quartz cementation and preserves porosity is still debated. Data from a number of Cambrian sandstone oil fields and dry fields have been studied to determine the effects of oil emplacement on quartz cementation. The data show that the porosity distribution is not affected by the presence of oil in sandstones from on fields and dry fields with similar porosity distribution. From this, it can be concluded that oil emplacement does not lead to preservation of primary porosity, and silica supply-for quartz cementation is derived from internal sources. Rather, in spite of large variation in porosity and quartz cement content, a regular pattern of porosity decrease is related to increasing temperature or depth. The observed heterogeneity is due to local factors that influence the precipitation of quartz cement, including sandstone architecture, i.e., distribution of shales within the sandstone bodies, and sandstone thickness. Heterogeneity is inherent to sandstone architecture and to the fact that silica for quartz cementation is derived from heterogeneously distributed local pressure solution. Models predicting reservoir properties should encompass facies and architecture as important independent factors.

Geological Society of America Bulletin, 2008

ABSTRACT Currently, the question of whether or not the presence of oil in sandstone inhibits quar... more ABSTRACT Currently, the question of whether or not the presence of oil in sandstone inhibits quartz cementation and preserves porosity is still debated. Data from a number of Cambrian sandstone oil fields and dry fields have been studied to determine the effects of oil emplacement on quartz cementation. The data show that the porosity distribution is not affected by the presence of oil in sandstones from on fields and dry fields with similar porosity distribution. From this, it can be concluded that oil emplacement does not lead to preservation of primary porosity, and silica supply-for quartz cementation is derived from internal sources. Rather, in spite of large variation in porosity and quartz cement content, a regular pattern of porosity decrease is related to increasing temperature or depth. The observed heterogeneity is due to local factors that influence the precipitation of quartz cement, including sandstone architecture, i.e., distribution of shales within the sandstone bodies, and sandstone thickness. Heterogeneity is inherent to sandstone architecture and to the fact that silica for quartz cementation is derived from heterogeneously distributed local pressure solution. Models predicting reservoir properties should encompass facies and architecture as important independent factors.

Baltica, 2015

The article contains results obtained from realization of the Polish and Lithuanian Baltic case s... more The article contains results obtained from realization of the Polish and Lithuanian Baltic case study within the EU – FP 7 SubCoast project, which one of the primary aims was analysis of vertical ground movements, potentially causing geohazards in the coastal areas. To reach this goal Interferometric Synthetic Aperture Radar (InSAR) data were obtained. For the Polish and Lithuanian Baltic coast ERS archive radar data were processed in order to provide Permanent Scatterer (PSInSAR, PSI) results that were then used to create the new innovative product – Dynamic DEM (DDEM). The deformation model defined by the SubCoast project normally needs to be created by merging InSAR, satellite navigation (GNSS), optical leveling and/or gravimetry measurements. Elaboration of DDEM enables more effective comparison between PS and tectonic features. Comparison of PS time series with groundwater changes shows a direct correlation, confirming impact of groundwater on subsidence or uplift of the ground...

Acta Geologica Polonica, 2008

The conditions and timing of carbonate cementation in Cambrian sandstones of the Baltic sedimenta... more The conditions and timing of carbonate cementation in Cambrian sandstones of the Baltic sedimentary basin were determined by oxygen and carbon stable isotope and chemical data in combination with optical and cathodoluminescence petrographic studies. Studied samples represent a range in present burial depth from 340 to 2150 m. The carbonate cement is dominantly ferroan dolomite that occurs as dispersed patches of poikilotopic crystals. Temperatures of dolomite precipitation, based on δ 18 O values, range from27°C in the shallow buried to 95°C in the deep buried sandstones. The burial historymodelling points to development ofmost of the dolomite cement during rapid Silurian-Devonian subsidence and Carboniferous-early Permian uplift. Awide range of precipitation temperatures indicate that temperature was not a major factor in triggering the carbonate cementation. Dolomite precipitation is related to early stages of organic matter maturation and thus to the oil generation history in the...

63rd EAGE Conference & Exhibition, 2001

Studia Geophysica et Geodaetica, 2008

The PASSEQ 2006-2008 project (PASsive Seismic Experiment in TESZ) focuses on understanding the de... more The PASSEQ 2006-2008 project (PASsive Seismic Experiment in TESZ) focuses on understanding the deep seismic structure across the transition between the old Proterozoic platform of north and eastern Europe and the younger Phanerozoic platform in central Europe. The experiment was only possible thanks to a great international effort that involved 17 institutions from Europe and the USA. A total of 139 three-component temporary shortperiod and 49 temporary broad-band seismic stations provided continuous recordings between May 2006 and June 2008 with the main period of recordings during 2007, along about 1200 km long and 400 km wide array running from Germany through the Czech Republic and Poland to Lithuania. The average spacing between all stations was about 60 km, attaining about 20 km in the central part. The configuration of the seismic network was a compromise among needs of different seismic methods. The dense central profile allows the use of modern passive 2-D imaging techniques, while the distribution of broad-band sensors was designed for surface wave and receiver function studies of the upper mantle down to the transition zone in a wide frequency range. The configuration will allow us to evaluate 3-D structures. The array also includes permanent stations of the national observatories within the area of the experiment. All raw data from temporary seismic stations are archived in their original formats on at least two different media and in two sites. Additionally, all continuous data have been converted to the miniSEED format and along with transfer functions for sensors and data loggers (dataless volumes) are stored at the GEOFON Data Center in Potsdam. It has bee agreed that all continuous data will be available for members of the PASSEQ Working Group exclusively for three years after the database is completed, and then will be open to the scientific community. Data from the dense array of stations will allow us to map the upper mantle structure, e.g., the contrast, sharpness and topography of seismic discontinuities, with much higher resolution than previously. We expect to reveal variations of seismic velocities within the upper mantle around the contact zone of the Proterozoic platform and younger mobile belts down to the transition zone by applying body-and surface-wave tomography, as well as the receiver function techniques. Analysis of shear wave splitting of teleseismic SKS waves and analysis of P residuals and converted waves will resolve variations of anisotropy across the TESZ. Joint inversions of independent datasets will provide more realistic 3-D models of the upper mantle than single methods. We will present data examples and initial results from SKS splitting, surface wave and receiver function analysis.

Sedimentary Geology, 2007

Quartz is an import cementing material in siliciclastic sandstones that can reduce porosity and p... more Quartz is an import cementing material in siliciclastic sandstones that can reduce porosity and permeability severely. For efficiently predicting and extrapolating petrophysical properties such as porosity and permeability, the controls on the occurrence and the degree of quartz cementation need to be better understood. Toward this end, a succession of Cambrian marine quartz arenites in Lithuania, at a present burial depth ranging from about 1 to 2 km, has been studied. In the central part of the Baltic Basin these quartz arenites are heavily cemented by quartz and the degree of quartz cementation is the main control on reservoir properties. On a regional Baltic Basin scale, the amount of quartz cement, and inversely the porosity and permeability, are correlated to burial depth and palaeotemperature. Porosity of the sandstones in the Baltic Basin flanks is around 23-28% and decreases toward the west to 15-18% in the central part and to 2-4% in west Lithuania. However, superposed on general trends between petrophysical properties and depth, large variations exist even between closely spaced wells making forward prediction of reservoir quality difficult. Evidently, factors other than general physical conditions and overall chemical conditions related to burial depth must have locally influenced the processes of quartz cementation and controlled the location and amounts of quartz cement. Such local factors are detrital composition, sedimentary structures and reservoir architecture, inherent to depositional facies. Clayinduced chemical compaction and pressure dissolution of detrital quartz at shale-sandstone contacts and within thin shale lamina is probably the main process yielding silica for local quartz cement. The supply of silica for quartz cement in the sandstones is thus dependent on the number of thin clay lamina and clay intercalations within the reservoir sandstones. The sandstone/shale ratio and thickness of sandstone bodies control the location and the degree of quartz cementation and thus reservoir quality.

Geophysical Journal International, 2014

The Mohorovičić discontinuity, Moho for short, which marks the boundary between crust and mantle,... more The Mohorovičić discontinuity, Moho for short, which marks the boundary between crust and mantle, is the main first-order structure within the lithosphere. Geodynamics and tectonic evolution determine its depth level and properties. Here, we present a map of the Moho in central Europe across the Teisseyre-Tornquist Zone, a region for which a number of previous studies are available. Our results are based on homogeneous and consistent processing of P-and S-receiver functions for the largest passive seismological data set in this region yet, consisting of more than 40 000 receiver functions from almost 500 station. Besides, we also provide new results for the crustal v P /v S ratio for the whole area. Our results are in good agreement with previous, more localized receiver function studies, as well as with the interpretation of seismic profiles, while at the same time resolving a higher level of detail than previous maps covering the area, for example regarding the Eifel Plume region, Rhine Graben and northern Alps. The close correspondence with the seismic data regarding crustal structure also increases confidence in use of the data in crustal corrections and the imaging of deeper structure, for which no independent seismic information is available. In addition to the pronounced, stepwise transition from crustal thicknesses of 30 km in Phanerozoic Europe to more than 45 beneath the East European Craton, we can distinguish other terrane boundaries based on Moho depth as well as average crustal v P /v S ratio and Moho phase amplitudes. The terranes with distinct crustal properties span a wide range of ages, from Palaeoproterozoic in Lithuania to Cenozoic in the Alps, reflecting the complex tectonic history of Europe. Crustal thickness and properties in the study area are also markedly influenced by tectonic overprinting, for example the formation of the Central European Basin System, and the European Cenozoic Rift System. In the areas affected by Cenozoic rifting and volcanism, thinning of the crust corresponds to lithospheric updoming reported in recent surface wave and S-receiver function studies, as expected for thermally induced deformation. The same correlation applies for crustal thickening, not only across the Trans-European Suture Zone, but also within the southern part of the Bohemian Massif. A high Poisson's ratio of 0.27 is obtained for the craton, which is consistent with a thick mafic lower crust. In contrast, we typically find Poisson's ratios around 0.25 for Phanerozoic Europe outside of deep sedimentary basins. Mapping of the thickness of the shallowest crustal layer, that is low-velocity sediments or weathered rock, indicates values in excess of 6 km for the most pronounced basins in the study area, while thicknesses of less than 4 km are found within the craton, central Germany and most of the Czech Republic.

69th EAGE Conference and Exhibition incorporating SPE EUROPEC 2007, 2007

Studia Geophysica et Geodaetica, 2008

Geological Society of America Bulletin, 2008

ABSTRACT Currently, the question of whether or not the presence of oil in sandstone inhibits quar... more ABSTRACT Currently, the question of whether or not the presence of oil in sandstone inhibits quartz cementation and preserves porosity is still debated. Data from a number of Cambrian sandstone oil fields and dry fields have been studied to determine the effects of oil emplacement on quartz cementation. The data show that the porosity distribution is not affected by the presence of oil in sandstones from on fields and dry fields with similar porosity distribution. From this, it can be concluded that oil emplacement does not lead to preservation of primary porosity, and silica supply-for quartz cementation is derived from internal sources. Rather, in spite of large variation in porosity and quartz cement content, a regular pattern of porosity decrease is related to increasing temperature or depth. The observed heterogeneity is due to local factors that influence the precipitation of quartz cement, including sandstone architecture, i.e., distribution of shales within the sandstone bodies, and sandstone thickness. Heterogeneity is inherent to sandstone architecture and to the fact that silica for quartz cementation is derived from heterogeneously distributed local pressure solution. Models predicting reservoir properties should encompass facies and architecture as important independent factors.

Geological Society of America Bulletin, 2008

ABSTRACT Currently, the question of whether or not the presence of oil in sandstone inhibits quar... more ABSTRACT Currently, the question of whether or not the presence of oil in sandstone inhibits quartz cementation and preserves porosity is still debated. Data from a number of Cambrian sandstone oil fields and dry fields have been studied to determine the effects of oil emplacement on quartz cementation. The data show that the porosity distribution is not affected by the presence of oil in sandstones from on fields and dry fields with similar porosity distribution. From this, it can be concluded that oil emplacement does not lead to preservation of primary porosity, and silica supply-for quartz cementation is derived from internal sources. Rather, in spite of large variation in porosity and quartz cement content, a regular pattern of porosity decrease is related to increasing temperature or depth. The observed heterogeneity is due to local factors that influence the precipitation of quartz cement, including sandstone architecture, i.e., distribution of shales within the sandstone bodies, and sandstone thickness. Heterogeneity is inherent to sandstone architecture and to the fact that silica for quartz cementation is derived from heterogeneously distributed local pressure solution. Models predicting reservoir properties should encompass facies and architecture as important independent factors.