Planar Lamination On Stratigraphic Column

Steps when drawing a stratigraphic column photo by huan cui 1.

Planar lamination on stratigraphic column.

Divide different units according to the lithology. Estimate the thickness of the unit. Interpreting stratigraphic columns step 1. Generalized stratigraphic column of the husky creek fm.

Turbidites vs river channel deposits. Evaluate how the vertical sequence of sedimentary structures changes to refine or correct your environmental interpretations. Which displays a faint planar lamination disrupted by polygonal fractures. Through transect of exposed strata along the coppermine river.

Stratigraphic age is based on gradstein et al s 2012 time scale. Planar lamination present if not disrupted by bioturbation. In addition to the mega ripples planar lamination low angle lamination 4 8 and hummocky cross stratification within the beds are also present. Wave action intensely affects lower shoreface only during storm events.

Posted by dawn sumner at 10 24 am. Evaluate how the vertical sequence of sedimentary structures changes to refine or correct your environmental interpretations. Use appropriate symbols when drawing the stratigraphic column. Primarily finer sands with layers of mud.

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. Mud rip up clasts detrital peloids and petrified woody debris are common. In geology cross bedding also known as cross stratification is layering within a stratum and at an angle to the main bedding plane.

Recognize characteristic sedimentary structures in each unit. The sedimentary structures which result are roughly horizontal units composed of inclined layers. Planar lamination step 4. 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.

Thin lenses and stringers of igneous pebble conglomerate occur near the base of the unit. The late jurassic stratigraphic column of saudi arabia. Planar lamination and large scale trough cross stratification are abundant. Here are some example stratigraphic columns to think about.

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