Detrital fission track thermochronology of Upper Cretaceous syn-orogenic sediments in the South Carpathians (Romania): inferences on the tectonic evolution of a collisional hinterland

E. Willingshofer, P.A.M. Andriessen, S.A.P.L. Cloetingh, F. Neubauer

    Research output: Contribution to JournalArticleAcademicpeer-review

    Abstract

    The tectonic evolution of a collisional hinterland sourcing the Haţeg Basin, a Late Cretaceous syn-orogenic sedimentary basin in the South Carpathians (Romania), is revealed through fission track thermochronology of detrital apatite and zircon grains. This basin formed on the upper plate (Getic unit) in response to Late Cretaceous collision with the lower plate (Danubian unit), an allochtonous continental block of the Moesian Platform, upon closure of a narrow oceanic basin (Severin Basin). The fission track results suggest that Turonian to lower Maastrichtian sediments of the Haţeg Basin have been dominantly derived from pre-Late Cretaceous sources. The age components they contain relate to pre-Cretaceous tectonothermal events such as the Variscan orogenic cycle, Jurassic rifting and Severin Basin formation, and to Early Cretaceous compressional tectonics. These results are compatible with the tectonic evolution of the upper plate that is identified as the primary source. From the onset of sedimentation (late Albian) until the early Campanian the Haţeg Basin resembles a piggy-back basin formed on the upper plate concomitant with underthrusting and internal stacking of the lower plate. In contrast, important tectonic subsidence during the late Campanian and early Maastrichtian reflects a shift to extensional tectonics causing the unroofing of the collision zone and the exhumation of lower plate rocks back to the surface. Our fission track data place important constraints on the timing of lower plate erosion that must have commenced during the late Maastrichtian, as documented by the completely reset Late Cretaceous age component within upper Maastrichtian sediments (Sinpetru Formation). Late Maastrichtian uplift of the basin and the formation of positive relief at the site of the collision zone is an expression of continuous convergence. The mismatch between the amount of denudation and the amount of sediments trapped in the Haţeg Basin underlines the importance of concomitant extensional unroofing.
    Original languageEnglish
    Pages (from-to)379-396
    JournalBasin Research
    Volume13
    DOIs
    Publication statusPublished - 2001

    Fingerprint

    thermochronology
    tectonic evolution
    Cretaceous
    Maastrichtian
    basin
    sediment
    unroofing
    collision zone
    Campanian
    tectonics
    extensional tectonics
    Turonian
    denudation
    basin evolution
    Hercynian orogeny
    stacking
    exhumation
    sedimentary basin
    apatite
    rifting

    Cite this

    @article{b1488f4d41b94cbdb2c833e7ee70cefb,
    title = "Detrital fission track thermochronology of Upper Cretaceous syn-orogenic sediments in the South Carpathians (Romania): inferences on the tectonic evolution of a collisional hinterland",
    abstract = "The tectonic evolution of a collisional hinterland sourcing the Haţeg Basin, a Late Cretaceous syn-orogenic sedimentary basin in the South Carpathians (Romania), is revealed through fission track thermochronology of detrital apatite and zircon grains. This basin formed on the upper plate (Getic unit) in response to Late Cretaceous collision with the lower plate (Danubian unit), an allochtonous continental block of the Moesian Platform, upon closure of a narrow oceanic basin (Severin Basin). The fission track results suggest that Turonian to lower Maastrichtian sediments of the Haţeg Basin have been dominantly derived from pre-Late Cretaceous sources. The age components they contain relate to pre-Cretaceous tectonothermal events such as the Variscan orogenic cycle, Jurassic rifting and Severin Basin formation, and to Early Cretaceous compressional tectonics. These results are compatible with the tectonic evolution of the upper plate that is identified as the primary source. From the onset of sedimentation (late Albian) until the early Campanian the Haţeg Basin resembles a piggy-back basin formed on the upper plate concomitant with underthrusting and internal stacking of the lower plate. In contrast, important tectonic subsidence during the late Campanian and early Maastrichtian reflects a shift to extensional tectonics causing the unroofing of the collision zone and the exhumation of lower plate rocks back to the surface. Our fission track data place important constraints on the timing of lower plate erosion that must have commenced during the late Maastrichtian, as documented by the completely reset Late Cretaceous age component within upper Maastrichtian sediments (Sinpetru Formation). Late Maastrichtian uplift of the basin and the formation of positive relief at the site of the collision zone is an expression of continuous convergence. The mismatch between the amount of denudation and the amount of sediments trapped in the Haţeg Basin underlines the importance of concomitant extensional unroofing.",
    author = "E. Willingshofer and P.A.M. Andriessen and S.A.P.L. Cloetingh and F. Neubauer",
    year = "2001",
    doi = "10.1046/j.0950-091x.2001.00156.x",
    language = "English",
    volume = "13",
    pages = "379--396",
    journal = "Basin Research",
    issn = "0950-091X",
    publisher = "Wiley-Blackwell",

    }

    Detrital fission track thermochronology of Upper Cretaceous syn-orogenic sediments in the South Carpathians (Romania): inferences on the tectonic evolution of a collisional hinterland. / Willingshofer, E.; Andriessen, P.A.M.; Cloetingh, S.A.P.L.; Neubauer, F.

    In: Basin Research, Vol. 13, 2001, p. 379-396.

    Research output: Contribution to JournalArticleAcademicpeer-review

    TY - JOUR

    T1 - Detrital fission track thermochronology of Upper Cretaceous syn-orogenic sediments in the South Carpathians (Romania): inferences on the tectonic evolution of a collisional hinterland

    AU - Willingshofer, E.

    AU - Andriessen, P.A.M.

    AU - Cloetingh, S.A.P.L.

    AU - Neubauer, F.

    PY - 2001

    Y1 - 2001

    N2 - The tectonic evolution of a collisional hinterland sourcing the Haţeg Basin, a Late Cretaceous syn-orogenic sedimentary basin in the South Carpathians (Romania), is revealed through fission track thermochronology of detrital apatite and zircon grains. This basin formed on the upper plate (Getic unit) in response to Late Cretaceous collision with the lower plate (Danubian unit), an allochtonous continental block of the Moesian Platform, upon closure of a narrow oceanic basin (Severin Basin). The fission track results suggest that Turonian to lower Maastrichtian sediments of the Haţeg Basin have been dominantly derived from pre-Late Cretaceous sources. The age components they contain relate to pre-Cretaceous tectonothermal events such as the Variscan orogenic cycle, Jurassic rifting and Severin Basin formation, and to Early Cretaceous compressional tectonics. These results are compatible with the tectonic evolution of the upper plate that is identified as the primary source. From the onset of sedimentation (late Albian) until the early Campanian the Haţeg Basin resembles a piggy-back basin formed on the upper plate concomitant with underthrusting and internal stacking of the lower plate. In contrast, important tectonic subsidence during the late Campanian and early Maastrichtian reflects a shift to extensional tectonics causing the unroofing of the collision zone and the exhumation of lower plate rocks back to the surface. Our fission track data place important constraints on the timing of lower plate erosion that must have commenced during the late Maastrichtian, as documented by the completely reset Late Cretaceous age component within upper Maastrichtian sediments (Sinpetru Formation). Late Maastrichtian uplift of the basin and the formation of positive relief at the site of the collision zone is an expression of continuous convergence. The mismatch between the amount of denudation and the amount of sediments trapped in the Haţeg Basin underlines the importance of concomitant extensional unroofing.

    AB - The tectonic evolution of a collisional hinterland sourcing the Haţeg Basin, a Late Cretaceous syn-orogenic sedimentary basin in the South Carpathians (Romania), is revealed through fission track thermochronology of detrital apatite and zircon grains. This basin formed on the upper plate (Getic unit) in response to Late Cretaceous collision with the lower plate (Danubian unit), an allochtonous continental block of the Moesian Platform, upon closure of a narrow oceanic basin (Severin Basin). The fission track results suggest that Turonian to lower Maastrichtian sediments of the Haţeg Basin have been dominantly derived from pre-Late Cretaceous sources. The age components they contain relate to pre-Cretaceous tectonothermal events such as the Variscan orogenic cycle, Jurassic rifting and Severin Basin formation, and to Early Cretaceous compressional tectonics. These results are compatible with the tectonic evolution of the upper plate that is identified as the primary source. From the onset of sedimentation (late Albian) until the early Campanian the Haţeg Basin resembles a piggy-back basin formed on the upper plate concomitant with underthrusting and internal stacking of the lower plate. In contrast, important tectonic subsidence during the late Campanian and early Maastrichtian reflects a shift to extensional tectonics causing the unroofing of the collision zone and the exhumation of lower plate rocks back to the surface. Our fission track data place important constraints on the timing of lower plate erosion that must have commenced during the late Maastrichtian, as documented by the completely reset Late Cretaceous age component within upper Maastrichtian sediments (Sinpetru Formation). Late Maastrichtian uplift of the basin and the formation of positive relief at the site of the collision zone is an expression of continuous convergence. The mismatch between the amount of denudation and the amount of sediments trapped in the Haţeg Basin underlines the importance of concomitant extensional unroofing.

    U2 - 10.1046/j.0950-091x.2001.00156.x

    DO - 10.1046/j.0950-091x.2001.00156.x

    M3 - Article

    VL - 13

    SP - 379

    EP - 396

    JO - Basin Research

    JF - Basin Research

    SN - 0950-091X

    ER -