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Q1. Group A1
1. Muhammad Rizky Maulia Hadi
2. Agung Prasetyo
3. Satria Agung Perkasa
4. Christi Lanora
5. Tri Rizki
6. Ica Ariska

What are the basic two categories of weathering?
- Mechanical weathering is the disintegration of rock into smaller and smaller fragments.
- Chemical weathering transforms the original material into a substance with a different composition and different physical characteristics.

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Group 3
-Kiki evansyah
-Achmad ridho
-Wahat Ali tusen
-Reynaldi alfarezi ramanda

Q3: what minerals are most abundant detrital sedimentary rocks ? in which rocks do these minerals predominate

Answer: Because of their detrital nature, any mineral can occur in a sedimentary rock. Clay minerals, the dominant mineral produced by chemical weathering of rocks, is the most abundant mineral in mudrocks

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Group 8
-M Fahmi Zamzam
-Deri Harpiandi
-Subandi Gusman
-M Rizki Satria

Q8. What is the single most characteristics feature of sedimentary rocks?

Answer for Q8.
The layers, called strata (or beds) of sedimentary accumulates in various depositional environments.

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Q5. What is diagenesis?

Answer :
Diagenesis is the name for a wide range of changes that affect sediments during their progress to become sedimentary rocks: after they are laid down, while they are becoming rock, and before they first undergo metamorphism. It does not include weathering, the processes that turn all kinds of rock into sediment.

Diagenesis is the change of sediments or existing sedimentary rocks into a different sedimentary rock during and after rock formation (lithification), at temperatures and pressures less than that required for the formation of metamorphic rocks.

Member :
-Andini Puspita
-Eka Amilia
-Putri Virgania
-Yunita
-Marwa Ls
-Anggun Vania

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Group 2
1.Agung Dwi Satrio
2. Trisna Perdana
3. Julius Fernanda
4. Yusri Rahmad
5. M. Syafei

Qustion:
List and briefly distinguish among the 3 basic sedimentary rock categories

Answer:
1. Detrital sedimentary rocks—accumulation of material that originates and is transported as solid particles derived from both chemical and mechanical weathering

2. Chemical sedimentary rocks—soluble material precipitated by either inorganic or biological processes and produced largely by chemical weathering

3. Organic sedimentary rocks—form from the carbon-rich remains of organisms

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Group 7
-Ahmad Afif Azkiya
-Anugrah Jodi Pratama
-Awang Budiman
-M. Rizko

Q7. What are the 3 broad categories of sedimentary environment? List a specific example associated with each category
Answer:
1. Continental : streams and lakes
2. Marine : coral reefs
3. Transitional (shoreline) : beaches and tidal flats.

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Q9. How do evaporites form? What are the examples?
name group:
1.Prengki samosir
2.halim andri
3.jodi aditya
4.Defrin tri putra
Answer: this evaporation can occur in shallow basins on land
Example: salt settles and settles on the bottom

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Q4. Distinguish between conglomerate and breccia?

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Q4. Distinguish between conglomerate and breccia?

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Group 4
- Al.Hafiz Nugraha B
- Adhitama dwi s
- Alfath
- Bayu marulitua s
- Muhamzah
- Ikbal okvin
Conglomerate and breccia are both sedimentary rocks
composed of particles of gravel-size, generally within a
mud or sand matrix and sometimes cemented with
calcite or silica cement. Conglomerates are
characterized by rounded grains, indicating significant
transport by water, while breccia is characterized by
sharp, angular grains, indicating little or no transport
bywater