| dbo:abstract
|
- The Williston Basin is a large intracratonic sedimentary basin in eastern Montana, western North Dakota, South Dakota, southern Saskatchewan, and south-western Manitoba that is known for its rich deposits of petroleum and potash. The basin is a geologic structural basin but not a topographic depression; it is transected by the Missouri River. The oval-shaped depression extends approximately 475 miles (764 km) north-south and 300 miles (480 km) east-west. The Williston Basin lies above an ancient Precambrian geologic basement feature, the Trans-Hudson Orogenic Belt that developed in this area about 1.8-1.9 billion years ago, and that created a weak zone that later led to sagging to produce the basin. The Precambrian basement rocks in the center of the basin beneath the city of Williston, North Dakota lie about 16,000 feet (4,900 m) below the surface. Deposition of sediments began in the Williston area during Cambrian time, but subsidence and basin filling were most intense during the Ordovician, Silurian, and Devonian Periods, when thick accumulations of limestone and dolomite, with lesser thicknesses of sandstones, siltsones, shales, and evaporites were laid down. Subsidence continued on a reduced scale into the Mississippian and was largely ended by Pennsylvanian time. Regional subsidence returned during the Mesozoic Era, although total sediment thicknesses were much less than during the Paleozoic. Near the end of the Cretaceous, tectonic activity during the Laramide Orogeny rejuvenated several basement structures in the Williston Basin to produce anticlines that serve as oil traps today. (en)
- Il bacino di Williston è un vasto bacino sedimentario intracratonico situato negli stati nordamericani del Montana, Dakota del Nord, Dakota del Sud e nella parte meridionale del Saskatchewan; il bacino è noto per i suoi ricchi depositi di petrolio e potassa. Il suo nome è collegato alla cittadina di Williston nel Nord Dakota, che si trova al suo centro. (it)
- 威利斯顿盆地（英語：Williston Basin）是北美洲内陆一个大型沉积盆地，位于美国蒙大拿州东部，北达科他州和南达科他州西部，加拿大萨斯喀彻温省南部，落基山脉东麓。盆地内有面积约11万平方千米的巨厚沉积层。该地区在中奥陶纪时期（距今约4.72亿至4.62亿年）开始坳陷，在之后的4亿年里的不同时期被上升的海洋淹没，从而导致有海洋沉积物在盆地内逐渐积累。富有石油和天然气资源。石油产自盆地深部的石灰岩，天然气则采自最上部砂层。石油在盆地中的聚集主要是由于落基山脉在形成时期发生岩层的褶皱和断裂作用形成了。 (zh)
|
| rdfs:comment
|
- Il bacino di Williston è un vasto bacino sedimentario intracratonico situato negli stati nordamericani del Montana, Dakota del Nord, Dakota del Sud e nella parte meridionale del Saskatchewan; il bacino è noto per i suoi ricchi depositi di petrolio e potassa. Il suo nome è collegato alla cittadina di Williston nel Nord Dakota, che si trova al suo centro. (it)
- 威利斯顿盆地（英語：Williston Basin）是北美洲内陆一个大型沉积盆地，位于美国蒙大拿州东部，北达科他州和南达科他州西部，加拿大萨斯喀彻温省南部，落基山脉东麓。盆地内有面积约11万平方千米的巨厚沉积层。该地区在中奥陶纪时期（距今约4.72亿至4.62亿年）开始坳陷，在之后的4亿年里的不同时期被上升的海洋淹没，从而导致有海洋沉积物在盆地内逐渐积累。富有石油和天然气资源。石油产自盆地深部的石灰岩，天然气则采自最上部砂层。石油在盆地中的聚集主要是由于落基山脉在形成时期发生岩层的褶皱和断裂作用形成了。 (zh)
- The Williston Basin is a large intracratonic sedimentary basin in eastern Montana, western North Dakota, South Dakota, southern Saskatchewan, and south-western Manitoba that is known for its rich deposits of petroleum and potash. The basin is a geologic structural basin but not a topographic depression; it is transected by the Missouri River. The oval-shaped depression extends approximately 475 miles (764 km) north-south and 300 miles (480 km) east-west. (en)
|
