Comparative research carried out within two different basins, one in the Carpathians of Poland (L... more Comparative research carried out within two different basins, one in the Carpathians of Poland (Late Jurassic to Early Miocene) and another in the Apenninic-Maghrebian mountain chain of Sicily (Triassic-Miocene), indicate significant similarity not only in their evolution but also in the sedimentary features of horizons with olistoliths. The olistolith-bearing units are genetically related to stages of tectonic evolution and are independent of the size of the basins and of duration of these stages. However, the observed differences in composition and size of olistoliths suggested, among the others relationship with the size of source areas and thickness of their sedimentary cover.
The basement of most of the plates, which play important role in the Mesozoic- Cenozoic evolution... more The basement of most of the plates, which play important role in the Mesozoic- Cenozoic evolution of the circum-Carpathian area was formed during the Late Paleozoic collisional events. The Mesozoic rifting events resulted in the origin of the oceanic type basins like Meliata, Vardar-Transilvanian and Ligurian-Penninic-Pieniny Oceans. During the Late Jurassic-Early Cretaceous time the Outer Carpathian rift had developed. The
The olistostromes formed in Northern Carpathians during the different stages of the development o... more The olistostromes formed in Northern Carpathians during the different stages of the development of flysch basins, from rift trough post-rift, orogenic to postorogenic stage. They are known from the Cretaceous, Paleocene, Eocene, Oligocene and Early Miocene flysch deposits of main tectonic units. Those units are the Skole, Subsilesian, Silesian, Dukla and Magura nappes as well as the Pieniny Klippen Belt
The stratigraphic position of the Goryczkowiec Sandstone reflects the Paleocene ridge geodynamics... more The stratigraphic position of the Goryczkowiec Sandstone reflects the Paleocene ridge geodynamics in the Outer Carpathian basins. The Goryczkowiec Sandstone was deposited on the slope of a ridge, known as the Subsilesian Sedimentary Area that originated during reorganization of the Outer Carpathian realm. A Paleocene age of this sandstone, documented clearly by autochthonous foraminiferal and algal assemblages indicates the time of the final formation of the Subsilesian Ridge. Abundant calcareous material of biogenic origin was transported by turbidity currents into deeper zones. This material includes fragments of carbonate buildups represented by algae, bryozoans and other organisms growing in the shallower part of the ridge. The Goryczkowiec Sandstone, previously known as the Szydłowiec Sandstone, is here redefined as a new lithostratigraphic unit within the Subsilesian Sedimentary Area in the marginal Outer Carpathians in Poland. The new name clarifies the ambivalence in the lithostratigraphic nomenclature.
This paper presents an insight into the geology of the area surrounding the ODDP proposed drillin... more This paper presents an insight into the geology of the area surrounding the ODDP proposed drilling site, and the structural development of the Carpathians in post-Palaeogene times. The outline of geology is accompanied by the results of the most recent magnetotelluric survey and the detailed description of the post-Palaeogene plate tectonics of the circum-Carpathian region. The oblique collision of the Alcapa terrane with the North European plate led to the development of the accretionary wedge of the Outer Carpathians and foreland basin. The northward movement of the Alpine segment of the Carpathian-Alpine orogen had been stopped due to its collision with the Bohemian Massif. At the same time, the extruded Carpatho/ Pannonian units were pushed to the open space, towards a bay of weak crust filled up by the Outer Carpathian flysch sediments. The separation of the Carpatho/Pannonian segment from the Alpine one and its propagation to the north was related to the development of the N-S dextral strike-slip faults. The formation of the West Carpathian thrusts was completed by the Miocene time. The thrust front was still progressing eastwards in the Eastern Carpathians. The Carpathian loop including the Pieniny Klippen Belt structure was formed. The Neogene evolution of the Carpathians resulted also in the formation of genetically different sedimentary basins. These basins were opened due to lithospheric extension, flexure, and strike-slip related processes. A possible astenosphere upwelling may have contributed to the origin of the Orava Basin, which represents a kind of a rift modified by strike-slip/pull-apart processes. In this way, a local extensional regime must have operated on a local scale in the Orava region, within the frame of an overall compressional stress field affecting the entire West Carpathians.
Jurassic volcanic rock series present sequence of tholeitic - calc-alkaline - alkaline compositio... more Jurassic volcanic rock series present sequence of tholeitic - calc-alkaline - alkaline composition. Very probably the rocks are cogenetic and related to subduction environment. The published data on their geochemistry comprises major element concentrations. The rough information on trace elements doesn't allow concluding on the origin and evolution of the melts leading to the sequence formation.
During the Late Pennsylvanian through Early Permian, the Midland basin was located in the low lat... more During the Late Pennsylvanian through Early Permian, the Midland basin was located in the low latitudes. In the Desmoinesian (Strawn), the basin was astride the equator; during the Missourian (Canyon), the center of the basin had migrated northward so it was located at 1-2N latitude. In the Virgilian (Cisco), the basin center was located around 2-4N latitude, and by the
Paleogeography and paleolatitude reconstructions assisted in locating Strawn Formation grainstone... more Paleogeography and paleolatitude reconstructions assisted in locating Strawn Formation grainstone shoals that form a stratigraphic trap on the eastern edge of the Byrant G field. Previous to this study, Strawn production was thought to be limited to fractured mudstoens found predominantly in the northwestern parts of the field. The grainstones were tested by a recompletion adding prolific new pay in
Origin of the Outer Carpathian basins is related here to the late Jurassic (? -Hauterivian) rifti... more Origin of the Outer Carpathian basins is related here to the late Jurassic (? -Hauterivian) rifting. Post-rift thermal sag mechanism controlled the early Cretaceous (?Barremian)-Cenomanian subsidence of the basins. Two phases of tectonic uplift were recognised: the Turonian-Maastrichtian one and, more prominent, the late Eocene-early Oligocene one. The onset of syn-orogenic, extremely rapid deposition migrated in time from the inner
Comparative research carried out within two different basins, one in the Carpathians of Poland (L... more Comparative research carried out within two different basins, one in the Carpathians of Poland (Late Jurassic to Early Miocene) and another in the Apenninic-Maghrebian mountain chain of Sicily (Triassic-Miocene), indicate significant similarity not only in their evolution but also in the sedimentary features of horizons with olistoliths. The olistolith-bearing units are genetically related to stages of tectonic evolution and are independent of the size of the basins and of duration of these stages. However, the observed differences in composition and size of olistoliths suggested, among the others relationship with the size of source areas and thickness of their sedimentary cover.
The basement of most of the plates, which play important role in the Mesozoic- Cenozoic evolution... more The basement of most of the plates, which play important role in the Mesozoic- Cenozoic evolution of the circum-Carpathian area was formed during the Late Paleozoic collisional events. The Mesozoic rifting events resulted in the origin of the oceanic type basins like Meliata, Vardar-Transilvanian and Ligurian-Penninic-Pieniny Oceans. During the Late Jurassic-Early Cretaceous time the Outer Carpathian rift had developed. The
The olistostromes formed in Northern Carpathians during the different stages of the development o... more The olistostromes formed in Northern Carpathians during the different stages of the development of flysch basins, from rift trough post-rift, orogenic to postorogenic stage. They are known from the Cretaceous, Paleocene, Eocene, Oligocene and Early Miocene flysch deposits of main tectonic units. Those units are the Skole, Subsilesian, Silesian, Dukla and Magura nappes as well as the Pieniny Klippen Belt
The stratigraphic position of the Goryczkowiec Sandstone reflects the Paleocene ridge geodynamics... more The stratigraphic position of the Goryczkowiec Sandstone reflects the Paleocene ridge geodynamics in the Outer Carpathian basins. The Goryczkowiec Sandstone was deposited on the slope of a ridge, known as the Subsilesian Sedimentary Area that originated during reorganization of the Outer Carpathian realm. A Paleocene age of this sandstone, documented clearly by autochthonous foraminiferal and algal assemblages indicates the time of the final formation of the Subsilesian Ridge. Abundant calcareous material of biogenic origin was transported by turbidity currents into deeper zones. This material includes fragments of carbonate buildups represented by algae, bryozoans and other organisms growing in the shallower part of the ridge. The Goryczkowiec Sandstone, previously known as the Szydłowiec Sandstone, is here redefined as a new lithostratigraphic unit within the Subsilesian Sedimentary Area in the marginal Outer Carpathians in Poland. The new name clarifies the ambivalence in the lithostratigraphic nomenclature.
This paper presents an insight into the geology of the area surrounding the ODDP proposed drillin... more This paper presents an insight into the geology of the area surrounding the ODDP proposed drilling site, and the structural development of the Carpathians in post-Palaeogene times. The outline of geology is accompanied by the results of the most recent magnetotelluric survey and the detailed description of the post-Palaeogene plate tectonics of the circum-Carpathian region. The oblique collision of the Alcapa terrane with the North European plate led to the development of the accretionary wedge of the Outer Carpathians and foreland basin. The northward movement of the Alpine segment of the Carpathian-Alpine orogen had been stopped due to its collision with the Bohemian Massif. At the same time, the extruded Carpatho/ Pannonian units were pushed to the open space, towards a bay of weak crust filled up by the Outer Carpathian flysch sediments. The separation of the Carpatho/Pannonian segment from the Alpine one and its propagation to the north was related to the development of the N-S dextral strike-slip faults. The formation of the West Carpathian thrusts was completed by the Miocene time. The thrust front was still progressing eastwards in the Eastern Carpathians. The Carpathian loop including the Pieniny Klippen Belt structure was formed. The Neogene evolution of the Carpathians resulted also in the formation of genetically different sedimentary basins. These basins were opened due to lithospheric extension, flexure, and strike-slip related processes. A possible astenosphere upwelling may have contributed to the origin of the Orava Basin, which represents a kind of a rift modified by strike-slip/pull-apart processes. In this way, a local extensional regime must have operated on a local scale in the Orava region, within the frame of an overall compressional stress field affecting the entire West Carpathians.
Jurassic volcanic rock series present sequence of tholeitic - calc-alkaline - alkaline compositio... more Jurassic volcanic rock series present sequence of tholeitic - calc-alkaline - alkaline composition. Very probably the rocks are cogenetic and related to subduction environment. The published data on their geochemistry comprises major element concentrations. The rough information on trace elements doesn't allow concluding on the origin and evolution of the melts leading to the sequence formation.
During the Late Pennsylvanian through Early Permian, the Midland basin was located in the low lat... more During the Late Pennsylvanian through Early Permian, the Midland basin was located in the low latitudes. In the Desmoinesian (Strawn), the basin was astride the equator; during the Missourian (Canyon), the center of the basin had migrated northward so it was located at 1-2N latitude. In the Virgilian (Cisco), the basin center was located around 2-4N latitude, and by the
Paleogeography and paleolatitude reconstructions assisted in locating Strawn Formation grainstone... more Paleogeography and paleolatitude reconstructions assisted in locating Strawn Formation grainstone shoals that form a stratigraphic trap on the eastern edge of the Byrant G field. Previous to this study, Strawn production was thought to be limited to fractured mudstoens found predominantly in the northwestern parts of the field. The grainstones were tested by a recompletion adding prolific new pay in
Origin of the Outer Carpathian basins is related here to the late Jurassic (? -Hauterivian) rifti... more Origin of the Outer Carpathian basins is related here to the late Jurassic (? -Hauterivian) rifting. Post-rift thermal sag mechanism controlled the early Cretaceous (?Barremian)-Cenomanian subsidence of the basins. Two phases of tectonic uplift were recognised: the Turonian-Maastrichtian one and, more prominent, the late Eocene-early Oligocene one. The onset of syn-orogenic, extremely rapid deposition migrated in time from the inner
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