The areas south of the Old Red Sandstone, including sectors of eastern and western North America, central and southern Europe, and parts of European Russia, were often covered by shallow continental shelf seas with local deeper marine troughs.
In the northern Tethyan trough, marine deposits now occur in the Alps, Turkey, Iran, Pakistan, and the Himalayas mainly as limestones, with deep-sea sediments such as those in radiolarian cherts, which formed in troughs in the deeper parts of the Tethys Sea.
Increased source strength, streamer length and dense spatial coverage of seismic reflection profiles of the SEISMARMARA Leg 1 allow to image the deep structure of the marine North Marmara Trough (NMT) on the strike-slip North Anatolian Fault (NAF) west of the destructive Izmit 1999 earthquake.
"Marine survey, marine safety.
The Central Valley is a large, asymmetric structural trough filled with marine and continental sediments up to 10,000 m thickness (Page 1986).
The Central Valley is a large, asymmetric structural trough filled with marine and continental sediments up to 10,000 m thick (Page 1986; Gronberg et al. 1998).
Great quantities of marine sediments collected in these troughs, as indicated by deposits—now mainly sandstones, shales, and graywackes located in the western Pacific basinal belt (New Zealand and Japan) and the eastern basinal belt (Alaska, Arctic Canada, British Columbia, western United States, and the west coast of South America).
On the surface, Sipadan is a tropical break in the expansive vista of oceanic blue; underwater, the geographic waypoint acts as a feeding trough for thousands of marine life specimens, from soft banking sea turtles and schools of hammerhead sharks to water monitor lizards that bring to mind old dinosaur monster movies.
As the continents rifted and ruptured, thick sequences of marine sediments accumulated in large linear troughs along their margins.
