نتایج جستجو برای: event stratigraphy
تعداد نتایج: 206049 فیلتر نتایج به سال:
The Paleocene-Eocene Thermal Maximum (PETM, ~56 Ma) was one of the major global deep-time hyperthermal events past. Studies shallow-marine PETM records are crucial to understand continental hydrological response current warming. This study presents first detailed documentation in Xigaze forearc basin located along northern active margin eastern Tethys Ocean, and illustrates associated environme...
We present a timeseries of flood and slumping phases in central Europe for the past 65,000 years from event layers sediment cores infilled Eifel maar basins (Germany). Palynological, petrographic organic carbon (chlorins) records are used to understand precise timing these events. Periods increased activity seem coincide with Heinrich stadials marine records, which associated cold more arid cli...
A detailed record of the Late Holocene sea level rise and landscape evolution that has taken place on the Georgia coast is contained within the sedimentary stratigraphy of its salt marsh depositional basins. Global relative sea level (RSL) has risen during the Late Holocene, and the rate of rise has accelerated during the Anthropocene. Jones Narrows marsh stratigraphy and radiocarbon analysis i...
Soft-sediment deformation structures associated with slumps and mass transport deposits (MTDs) are generally considered to form at the surface when unlithified sediment moves downslope under influence of gravity. Where stratigraphic sequences contain several deformed horizons, question arises as whether repeated slope failure has systematically built-up multiple MTDs in record a ‘sequential mod...
The 2016 MW 7.8 Kaikōura Earthquake nucleated on Humps fault, which ruptured across the Emu Plain in North Canterbury. paleoearthquake history of fault was poorly constrained prior to earthquake. To determine timing and single-event displacements (SED) earthquakes we use Optically Stimulated Luminescence (OSL) radiocarbon dates faulted stratigraphy analysis faulting (i.e. geometry slip) at McLe...
The short sediment core EMB201/7-4 retrieved from the East Gotland Basin, central Baltic Sea, is explored here as a candidate to host stratigraphical basis for Anthropocene series and its equivalent epoch, still be formalized in Geological Time Scale. has been accurately dated back 1840 CE using well-established event stratigraphy approach. A pronounced significant change occurs at 26.5 cm (dat...
The Lower Triassic Sinbad Formation (Thaynes Group) in the San Rafael Swell of east-central Utah (11-18 m thick) represents the maximum flooding zone and at least part of the highstand systems tract of a 185+ m thick depositional sequence. The Sinbad Formation conformably overlies siliciclastic tidal flat, fluvial channel and carbonate peritidal deposits of the Black Dragon Formation, a transgr...
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