Subsurface modeling from seismic and borehole data is important for reservoir prediction, geophysical exploration, and production. A reasonable model should honor borehole rock properties and conform to seismic structural and stratigraphic features. Such a subsurface model can be difficult to build in cases complicated by faults and unconformities. Automatic and semiautomatic methods have been ...

The stratigraphic and compositional study of three sediment cores recovered close to the Po River near Ostiglia provides clues on changes in fluvial dynamics at transition from last glacial present interglacial. Upper Pleistocene units are dominated by sands with high content volcanic lithics, denoting supply south-Alpine fluvio-glacial tributary system. Early–Mid Holocene unit, peat-rich barre...

An unusual richness of biogeochemical events is recorded in Neoproterozoic– Cambrian strata of the Death Valley region, California, United States. Eight negative carbon isotope (d13C) excursions are found in carbonate units between 1.08 Ga and the Precambrian/Cambrian boundary; four of these excursions occur in carbonates that contain textural features similar to those found globally in postgla...

S U M M A R Y Estimating orientations of seismic structures (reflections) and stratigraphic features (channels) is important for seismic interpretation, subsurface interpolation and geophysical inversion. Structure tensors, constructed as smoothed outer products of amplitude gradients, are commonly used to estimate seismic reflection normals, which uniquely define the reflection orientations. H...

The Rivoli-Avigliana end moraine system (Italian Western Alps) hosts an important stratigraphic archive of Pleistocene glaciations. A new geological map provides a 3D architecture the that reveals complex glacial, alluvial and lacustrine units. Six glacial units were recognized. During deposition four older (Early-Middle Pleistocene) morphology valley outlet had different drainage pattern from ...

Abstract Gran Dolina is a cavity infilled by at least 25 m of Pleistocene sediments divided into 12 lithostratigraphic units and 19 sedimentary facies. These facies have been allochthonous facies, defined as sediment inputs from the outside, autochthonous generated within karst; but this division has challenged in recent works. In study, TD1 TD2 detailed studied use assessed. For that purpose, ...