CARI RECEH ONLINE (CARI-CARI RECEH)

1.Fosil Orientation
First discovered sedimentary structures are sedimentary that have elements of organisms part. Organisms in the sediment settles in the form of a kind of shell bivalves. Shell has spread that there was a pattern oriented or its have certain patterns in spreading. spreading of the shell in the south-west with the curved shape. Therefore I have concluded that the existing sediment structure are included into the structure of the type fossil biogenic the named is sediment orientation. Interpretation of the formation when the current flows come with it granules sediment of shell animals that have died.. The material follow the rhythm of the river to flow some place where energy flows are reduced then bring it settles in place following the flow pattern that brought.
2.ripple mark
I found the second sedimentary structures is coating but the bedding plane perpendicular to the direction of this river. This indicates that this place including sedimentary depositional structure. Interpretation of sediment deposition is due transport energy has got a strong point of energy deposition and energy sediment transport is weak then make the material settles horizontally or perpendicular to the direction of current flow. Then when it comes back strong river flow can pass through sediment deposition earlier and settling down again to form again as before when the current is not strong enough carry sediment grains ,so it's onwards.
So it can be concluded that the water flow become weaken will forming sedimentation, water naturally with the same energy will hit the wall of the sediment and the current that flows back again, just sediment flow to have stronger energy that can pass through the wall sediment and of course will weak as it made another appearance as it.This can be concluded sediment structure is ripple mark.Environment of deposition often indicated by sedimentary structures traces left in the sediment by various processes before lithification ,indicate moving wind or water (current in stream; wave action along shore; etc.).then riplle mark have two kind Symmetrical ripples (aka oscillation ripples) represent water moving back-and-forth, such as at a shoreline, Asymmetrical ripples (aka current ripples) represents wind or water moving in a single direction. and I think this structure almost like Symmetrical ripples.
3.bedding
The sedimentary structures form neatly arranged. Interpreted that these sedimentary structures formed by the deposition of current long wave. Resulting in the formation of layers that have a diversity of different grains.
Form of sediment or sedimentary rock bottom and has a flat top surface or planar, and the horizontal spread widely. Referred to as a form of sedimentary layering. Form sediment or bedding should be different from other layers above and below. Layer may be referred to as 'deposition unit' which is defined as the thickness of the deposited sediments are seen to have a permanent role in a state physics. Single cross layer for example. Layer caused by the difference: differences in composition, color, size (size), grain shape, grain structure and grain orientation