Sentence examples for major unconformity from inspiring English sources

The Mesoproterozoic Svinsaga Formation overlies a major unconformity (sub-Svinsaga unconformity) in the Telemark Supracrustal rocks (southern Norway).

A major unconformity in the mid-Cretaceous is observed above the Burgan High — a structural feature of great importance because of its hydrocarbon potential.

The uplift resulted in a major unconformity and deposition of extensive regional sheets of gravel and sand, of which only isolated remnants remain.

The underlying marine Dandot Formation is terminated by a major unconformity that represents a type-I sequence boundary associated with a regional relative sea-level fall and a significant regression of the Tethyan shoreline.

First, it is the well-known excursion in the Laframboise Mb. (+4‰) that is disconnected from a rising limb in the underlying strata by a major unconformity that we relate to the glacial maximum and to subaerial erosion in LOGC 3. Second, there is an earlier asymmetric excursion (+2‰) with its descending limb that is spanning the lower and middle parts of the Ellis Bay Fm.

Sequence-stratigraphic and diagenetic evidence indicate a major unconformity at the base of depositional sequence (DS 3 that contains a prograding reef complex, suggesting that approximately 250 000 yr of record (Subchrons C3Br.2r to 3Br.1r) are missing near the Messinian Tortonian boundary.

Mineralisation at the Ranger, Jabiluka and other major unconformity-related deposits in the Alligator Rivers Uranium Field (ARUF) occurs in Paleoproterozoic metamorphic basement rocks immediately beneath the unconformity with the Paleo- to Mesoproterozoic McArthur Basin.

A seismic profile reveals subparallel-to surface layered stratigraphy with only minor folding and no major unconformities (stacking or faulting).

Major unconformities exhibiting a sustained pause in sedimentation subsequently were recognized between the Ordovician and Silurian systems in many other places around the world where the boundary beds are exposed.

Contourite drifts are bounded at the bottom and at the top by two major unconformities, indicating that the formation of the sediments drifts occurred between the onset of the LGM and the GS-1/Younger Dryas event.

SB Ce 3 and Ce 5 as well as SB Tu 2 and Tu 4 represent major unconformities associated with eurybatic sea-level falls and subsequent rises of significant amplitude based on their stratigraphical and sedimentological signatures.