ACTIVITY Name: A. On the nock cyle below, coloe aws 4.5 Rocks and the Rock Cycle

Question

ACTIVITY Name: A. On the nock cyle below, coloe aws 4.5 Rocks and the Rock Cycle Model rocks n if they indicate toformatin of edimentaush and ifthy indcae·prsos kang.oformaion nock groapoo i/are chcerined by each of the processes and nxk properties Place chock marks in the table to indicale wh igneous rocks Processes and Rock Properties iehification of sediment Igneous -mense heating-butnomettra- stals precipitate from water solidfication of magmalava melting of rock cementation of grains folding of rock common fossils B. FIGURE 4.5 contains photographs of five rocks (a-e). For cach phocograph, recond the following information in the chart on the next page 1. In column one (lefi-hand column), note the figure number of the rock sample phosograph to be analyzed. 2. In column two (blue), list the rock properties that you can observe in cthe sample. 3. In column three (pink). classify the rock as igncous, sedimentary, or metamorphic. 4. In column four (yellow), describe, as well as you can, how the rock may have formed 5. On the rock cycle diagram above, write the figure number of the photograph/rock sample to show where it fits in the rock cycle model. 6. In column five (green), predict from the rock cycle (FIGURE 4.2) three different changes that the rock could undergo next if left in a natural setting 127

Explanation / Answer

In the fist, tabular data crystal precipitation from water need to be corrected as we know that the carbonates rocks are associated with the crystals of carbonate precipitation of crystals in the water which lead to the formation of carbonate rocks namely limestone.
Coarse graded gravel is formed by the result of the weathering and erosion of the preexisting rocks. The action of rivers and wave tends to pile up gravel in large accumulations. This resulting in the compacted conglomerate.

Gravel: Its genesis is similar to that of the coarse-graded gravel but at a further away from the erosion site.

I feel the image C is a metamorphic rock as it’s his having fined grained with the shiny appearance in which the crystals have modified and have transformed into the different rock from its parent rock of limestone.

The folded sedimentary rock would have developed due to the differential force acting on the rock which acts in the different direction to lead to the development of the folded structure within the rock.

Grasey layered igneous rock has been developed by the quick cooling of the lava which helps the basic or ultrabasic lave to develop in this rock type.
The various changes that rock could undergo:
Coarse gravel or Gravel:
1. Compaction
2. Rearrangement of the mineral grains
3. Lead to the compacted structure
In the Metamorphic rock:
1. Recrystallization of the mineral grains
2. Grains would develop in new form
3.Alteration of its own physical as well as the optical property within the rock.
In the structurally folded rock:
1. The layer would undergo the folding
2. Orientation of mineral grains would take in the direction of the stress direction
3. Lead to the development of the new structure.

In the igneous rock:

1. Rock would undergo the weathering
2. Erosion of the layer can take place
3.Development of the weathered structure can develop in the rock.

Starting from any rock from the sedimentary rock it can get transformed into metamorphic rock or it can go in the melt when subjected to the high temperature it can lead to the formation of the igneous or metamorphic type subjected to the behavior of the rock with the high-temperature condition. When this rock gets converted into another rock type then it will be subjected to the agent of weathering and it will develop a new set of sedimentary rock.

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