Planar Lamination On Stratigraphic Column

Recognize characteristic sedimentary structures in each unit.

Planar lamination on stratigraphic column. The original depositional layering is tilted such tilting not being the result of post depositional deformation cross beds or sets are the groups of inclined. Planar lamination step 4. Divide different units according to the lithology. Interpreting stratigraphic columns step 1.

Wave action intensely affects lower shoreface only during storm events. Here are some example stratigraphic columns to think about. Primarily finer sands with layers of mud. Here palaeocurrent indicators are south south eastward mean resultant azimuth 145.

Turbidites vs river channel deposits. The planar laminated to low angle cross stratified facies typically shows fine lamination that is geometrically arranged in bed sets having horizontal to low angle cross stratification. Through transect of exposed strata along the coppermine river. The late jurassic stratigraphic column of saudi arabia.

Steps when drawing a stratigraphic column photo by huan cui 1. Which displays a faint planar lamination disrupted by polygonal fractures. In geology cross bedding also known as cross stratification is layering within a stratum and at an angle to the main bedding plane. In addition to the mega ripples planar lamination low angle lamination 4 8 and hummocky cross stratification within the beds are also present.

Posted by dawn sumner at 10 24 am. Estimate the thickness of the unit. Thin lenses and stringers of igneous pebble conglomerate occur near the base of the unit. Evaluate how the vertical sequence of sedimentary structures changes to refine or correct your environmental interpretations.

Planar lamination present if not disrupted by bioturbation. Use appropriate symbols when drawing the stratigraphic column. Generalized stratigraphic column of the husky creek fm. If you hypothesized that set of a fining upward sandstones were turbidites which have planar lamination and current ripple cross lamination but there is also trough cross stratification in a number of the beds ask yourself if there is a way for trough cross stratification to form in turbidites.

Cross stratification angles vary from 0 to 20 fig. Mud rip up clasts detrital peloids and petrified woody debris are common. Evaluate how the vertical sequence of sedimentary structures changes to refine or correct your environmental interpretations. Planar lamination and large scale trough cross stratification are abundant.

Look for sedimentary structures that are characteristic of a specific environment or process.