Planar Lamination On Stratigraphic Column

Planar lamination and large scale trough cross stratification are abundant.

Planar lamination on stratigraphic column.

Look for sedimentary structures that are characteristic of a specific environment or process. The late jurassic stratigraphic column of saudi arabia. Primarily finer sands with layers of mud. 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.

Here are some example stratigraphic columns to think about. Which displays a faint planar lamination disrupted by polygonal fractures. Evaluate how the vertical sequence of sedimentary structures changes to refine or correct your environmental interpretations. Planar lamination or stratification.

Thin lenses and stringers of igneous pebble conglomerate occur near the base of the unit. 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. 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. Wave action intensely affects lower shoreface only during storm events.

Interpreting stratigraphic columns step 1. Recognize characteristic sedimentary structures in each unit. Generalized stratigraphic column of the husky creek fm. Planar lamination step 4.

Turbidites vs river channel deposits. Divide different units according to the lithology. Through transect of exposed strata along the coppermine river. The sedimentary structures which result are roughly horizontal units composed of inclined layers.

Estimate the thickness of the unit. Posted by dawn sumner at 10 24 am. Use appropriate symbols when drawing the stratigraphic column. Mud rip up clasts detrital peloids and petrified woody debris are common.

In addition to the mega ripples planar lamination low angle lamination 4 8 and hummocky cross stratification within the beds are also present. In geology cross bedding also known as cross stratification is layering within a stratum and at an angle to the main bedding plane. Cross stratification angles vary from 0 to 20 fig. Evaluate how the vertical sequence of sedimentary structures changes to refine or correct your environmental interpretations.

Here palaeocurrent indicators are south south eastward mean resultant azimuth 145.