Anticlines, salt

Sail-related (raps—formed when the plastic salt formations deform into domelike structures under the overburden forces of the beds above the salt beds. Such plastic flowing (and bulging) of the salt beds deforms the rock formations above producing anticline structures and faults in the rock formation astride the domelike structures (see Figures 2-49 and 2-50). 

The Carboniferous sediments of the Maritimes Basin were originally deposited as red-green interstratified continental to marginal siliciclastics, marine limestone, dolostone, gypsum, anhydrite, halite, and locally, potash. The salt deposits vary from stratified, with only minor structural complications, to those that have been tectonized into pillows, anticlines e.g., Penobsquis Deposit) and diapirs or domes. In the latter cases, structural complexities make the stratigraphic position of many of these deposits uncertain. 

Figure 5.6 Cross-section showing the various types of trap that may be associated with salt movement domal trap (A) fault traps (B and C) pinchout traps (D) turtle-back or sedimentary anticline (E) truncation trap (F) (from Elements of Petroleum Geology, by Robert C. Selley. Copyright ( ) 1985 by W.H. Freeman and Company. Reprinted by...

Traps associated with salt intrusions are of many types (example Fig. 1.2 -1.3) limestone reefs (Fig. 1.4) can also serve as reservoir rocks and give rise to overlying traps of anticlinal form as a result of different compaction. Examples are also known in which the reservoir rock extends to the surface of the earth but oil and gas are sealed in it by clogging of the pores by bitumen or by natural cements [3], Many reservoirs can display more than one of the factors that contribute to the entrapment of hydrocarbons. 

Structural tr s Anticlines Fault traps Diapiric trq)s Salt diapirs Mud diapirs Stratigraphic traps... 

At the Cardona mine, the deposit is formed around a diapiric anticline. The potash beds form a horseshoeshaped deposit 1 km wide and 5 km long around the northern flank of the salt dome. Beds with 20°-80 dips are mined in stopes at depths up to 1,025 m. The potash zone mined varies from 8 to 20 m in thickness and averages 11%-12% K2O. 

Multifunctional multipolymeric surfactant mixtures which can be produced from the FRRPP process are capable of efficiently recovering trapped oil from subterranean sources. A typical oil reservoir, shown in Figure 5.1.1, is an anticline (inverted-dome) rock formation wherein the oil is trapped within the open-pore rock formation from sandstone or carbonate material bound by impermeable rock on top and brine in porous rock at the bottom. Immediately above the oil bank could be a layer of natural gas at high pressure, since this formation is originally underground where the pressures could at least be that of the ground overbearing material. Other oil bank formations cited in the literature include salt formations, reefs, etc. 

Bosabalidis A M, Thomson W W 1984 Ultrastructural differentiation of an unusual structure lining the anticlinal walls of the inner secretory cells in Tamarix salt glands. Bot Gaz 145 427-435... 

Hite, R. J. (1961). Potash Bearing Evaporite Cycles in the Salt Anticlines of the Paradox Basin, Colorado and Utah. U.S. Geol. Survey Prof. Paper 424-D, Article 337, D135-D138. 

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