Abstract Carbonate build-ups in lakes, hydrothermal and fluvial settings are characterized by distinctive geometry, spatial distribution, fabrics geochemical signature but also some comparable features. Lake margin bioherms form continuous belts for hundreds of metres to kilometres, subparallel shorelines. Sublacustrine spring mounds spaced at kilometres aligned along faults. Hydrothermal travertine aprons with planar clinoforms or terraced slopes controlled faults, thermal water discharge...

Abstract Positive shifts in global seawater δ 13 C DIC are related to changes the ratio of organic relative inorganic carbon burial oceanic basins, whereas factors such as climatic cooling and accumulation polar ice known cause positive 18 O. Here, an alternative model is proposed for formation local isotope shallow‐marine settings. The involves geochemically altered platform‐top water masses effects early meteoric diagenesis on carbonate isotopic composition. Both mechanisms active modern...

Abstract The sedimentary successions of several basins in Europe show evidence widespread Late Jurassic aridification that is considered a long‐standing conundrum paleoclimate modeling. distinctive feature this event it appears concentrated discrete time interval between the Kimmeridgian (Late Jurassic) and Berriasian (Early Cretaceous), extended to eastern southern‐central Asia for total ∼10 Mkm 2 roughly same interval. Climate modeling has not provided convincing explanation event. We...

Abstract Current classifications of carbonate platforms use depositional gradient as the main criterion for separating systems into two end-member types, ramps and flat-topped (FTPs). However, many examples do not conform to this simple classification. To investigate why is better understand probable controls on platform development, we have used a series 2D numerical forward model runs how sediment production, diffusional transport, other such tectonic subsidence, antecedent topography,...

Abstract The study of hydrothermal travertines contributes to the understanding interaction between physico‐chemical processes and microbial mats in carbonate precipitation. Three active travertine sites were investigated Central Italy characterise types precipitates associated at varying parameters. Carbonate precipitated fabrics decimetre millimetre‐scale mat composition vary with decreasing water temperature: (a) relatively higher temperature (55–44°C) calcite aragonite crystals...

Abstract Seismic‐scale continuous exposures of an Upper Carboniferous (Bashkirian–Moscovian) carbonate platform (N Spain) provide detailed information about the lithofacies and stratal geometries (quantified with differential global positioning system measurements) microbial boundstone‐dominated, steep prograding aggrading margins. Progradational aggradational platform‐to‐slope transects are characterized by distinct lithological features patterns that can be applied to understanding...

Abstract Six sequences, each with a distinct shape, stratal anatomy, bounding surfaces, lithofacies composition and stacking patterns, were identified in the Djebel Bou Dahar isolated carbonate platform which developed half‐graben High Atlas marine rift basin during Early Jurassic. Sequences are believed to have complex, multi‐process origin as result of tectonic processes (regional subsidence fault‐block rotation) overprinting eustatic signal. In addition, changing producers shifting...

Facies character, diagenesis, geochemical signature, porosity, permeability, and geometry of the upper Pleistocene Tivoli travertines were investigated integrating information from six borehole cores, drilled along a 3 km N-S transect, quarry faces, in order to propose revised depositional model. Travertines overlie lacustrine alluvial plain marls, siltstones, sandstones pyroclastic deposits Roman volcanic districts. In northern proximal area, with respect inferred hydrothermal vents,...

Shallow crustal fault zones, particularly those within carbonate successions, are deformation zones that influence subsurface fluid migration, localization, and interaction. These characterized by fault-controlled fracturing brecciation, can act as important conduits for flow in the Earth's crust. The interaction between fluids fractured carbonates rock matrix induce significant changes mineralogical mechanical properties of zones. Therefore, studying fluid-rock interactions such...

Abstract Seismic-scale continuous exposures of an Early Jurassic carbonate platform located in the southern High Atlas Morocco provide detailed quantitative information about lithofacies and stratal geometries aggrading, retrograding, prograding steeply inclined slope system that evolved active intracratonic rift basin. Aggradational, backstepping, progradational outer-platform to transects are each characterized by distinct lithological features patterns. A digital outcrop model was...

During the Messinian, sensitivity of Mediterranean Basin to ecosystem perturbation was enhanced in response progressive restriction water exchange with Atlantic Ocean. The widespread deposition organic-rich layers (i.e. sapropel) during Messinian testifies carbon and oxygen cycles; indeed, these sediments were deposited under conditions starvation, presumably a periodic deterioration thermohaline circulation strength. Disentangling causes, effect magnitude weakening geological past is...

ABSTRACT Seismic-scale outcrops of lower Pennsylvanian steep-margined carbonate platforms in northern Spain (Sierra de Cuera, Cantabrian Mountains) provide the opportunity to link depositional facies platform-interior architecture. Lithofacies character, vertical stacking patterns, and spatial distribution shallowing-upward cycles were investigated a semiquantitative model for inner-platform strata. A 70-m-thick succession eight (2.5-15 m thick) was studied across 2-km-wide transect. Cycles...

Abstract Spatial information on lithofacies from outcrops is paramount for understanding the internal dynamics, external controls and degree of predictability facies architecture shallow‐water carbonate‐platform tops. To quantify spatial distribution vertical stacking within an outer‐platform shoal‐barrier complex, integrated analysis digital field technologies have been applied to a high‐relief carbonate platform exposed in Djebel Bou Dahar (Lower Jurassic, High Atlas, Morocco). The outer...

Abstract The Upper Cretaceous (Campanian–Maastrichtian) bioclastic wedge of the Orfento Formation in Montagna della Maiella, Italy, is compared to newly discovered contourite drifts Maldives. Like drift deposits Maldives, fills a channel and builds Miocene delta‐shaped mounded sedimentary body basin that similar size approximately 350 km 2 large coarse‐grained delta composition also exclusively debris sourced from shallow‐water areas reworked clasts itself. In near mud‐free succession,...