| Popis: |
Widespread Late Triassic and earliest Jurassic salt deposition took place during the latter stages of rifting between Nova Scotia and Morocco. Extensive seismic data coverage along the Scotian margin provides a clearer picture of the margin structure, the distribution of synrift strata, and the extent of the original salt basin. The primary salt layer lies principally beneath the present-day slope in the southwest and the present-day shelf in the northeast. Postrift mobilization of salt played an important role in the structural and stratigraphic development of the margin. In the west, most of the expelled salt lies immediately above the primary salt basin; in the east, expelled salt largely escaped and now lies seaward of the primary salt basin. Recent mapping efforts have substantially improved our understanding of the timing and distribution of different postrift salt tectonic styles. This chapter introduces the reader to the wide diversity of salt tectonic elements found along the Scotian margin, linking the different salt tectonic styles to regional patterns in sedimentation. |
