dakota formation - Axtarish в Google
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The Dakota is a sedimentary geologic unit name of formation and group rank in Midwestern North America. The Dakota units are generally composed of ...
4 апр. 2024 г. · Dakota group is divided into five informally named formations (ascending): Lower sandstone, Lower shale, Middle sandstone, Middle shale, and ...
The Dakota Formation in Kansas lies between the Kiowa Formation below and Graneros Shale above (Figure 1). The lower contact is erosional and separates the ...
The Dakota Formation consists of floodplain deposits of interbedded siltstone, claystone, thin-bedded sandstone and lignites; lenticular, (fluvial or ...
The Dakota Formation in this region contains four distinctive Albian-Cenomanian palynostratigraphic zones that are used to partition the unit into successive ...
The Dakota Formation of south-central Utah was deposited in the foreland basin to the east of the Sevier orogenic belt. During the early Late Cretaceous, ...
This study includes a comprehensive examination of existing collections, extensive field work over two summers and literature searches.
They occur within the grey to yellow thick-bedded marly dolomitic limestone interbedded with thin beds of grey shale in the lower part of the formation. Their ...
The Lower Cretaceous section exposed in northeastern Utah includes the Cedar Mountain and Dakota Formations. The. Cedar Mountain Formation consists of fluvial- ...
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