The study examines bioclastic carbonate contourites that arise from the broad spectrum of bottom-current related sedimentary processes ranging deposition to erosion. result intermittent accumulation sediment are thin and condensed successions with abundant hiatuses. Such deposits poorly known, since broadly accepted contourite-facies model, bi-gradational sequence, characterizes environments co...

The Chocó-Panamá block is the land bridge that connects Central and South America forms trailing edge of Caribbean Large Igneous Province (CLIP). New field observations are combined with new geochemical, isotopic 40Ar/39Ar analyses mafic basement Chocó within Colombia. These integrated U/Pb ages detrital zircons extracted from siliciclastic carbonate rocks unconformably overlie basement. data u...

Abstract The recently discovered massive and stockwork sulphide mineralization of Semblana-Rosa Magra Monte Branco, situated ESE the Neves–Corvo volcanogenic (VMS) deposit in Iberian Pyrite Belt (IPB) is presented. Geological setting tectonic model discussed based on proxies such as palynostratigraphy U–Pb zircon geochronology. found within IPB Volcano-Sedimentary Complex (VSC) Lower sequence, ...

New U-Pb ages for detrital and igneous zircons constrain the depositional age and sedimentary provenance of the Beardmore Group, a siliciclastic succession that records transformation of the East Antarctic margin during Rodinia breakup and subsequent Gondwana amalgamation. We divide rocks previously mapped as the Beardmore Group into (1) an inboard late Neoproterozoic assemblage (probably ≤670 ...

The noncarbonaceous Ediacaran discs of variable morphologies from the Jodhpur Sandstone Formation of the Marwar Supergroup, western Rajasthan, suggest different biologic affinities of plant and animal kingdom. These discs are commonly preserved on the bedding surfaces of siliciclastic sandstone and shale in strong positive relief and appear to possess a flexible to rigid body. Discs assignable ...

The quality of any reservoir is strongly controlled by diagenetic processes, especially those that are comprised mixed siliciclastic-carbonate sequences. An Eocene sequence forms reservoirs with diverse in the Hungarian Palaeogene Basin, which found within Pannonian Basin. Late transgression established extensive shallow-marine depositional environments controlling early processes. Drill cores ...