Closely examine the individual grains in Sample S 4 . Which of the following is true about its m

Name: Problem 15, Chapter 10: Laboratory Manual for Introductory Geology
Uploaded: 2020-06-08T15:16:55-08:00
Duration: 2 min 11 s
Channel: John Barone
Description: Closely examine the individual grains in Sample S 4 . Which of the following is true about its maturity? a. It is immature because it is poorly sorted. b. It is mature because it is poorly sorted. c. It is mature because it contains mostly rounded grains. d. It is immature because it contains mostly rounded grains. e. It is immature because it has clay-sized particles.

step 1 This is a question about pollen, and it is a list of statements, and we're supposed to determine

Question

Closely examine the individual grains in Sample $\mathrm{S} 4 .$ Which of the following is true about its maturity? a. It is immature because it is poorly sorted. b. It is mature because it is poorly sorted. c. It is mature because it contains mostly rounded grains. d. It is immature because it contains mostly rounded grains. e. It is immature because it has clay-sized particles.

   Closely examine the individual grains in Sample $\mathrm{S} 4 .$ Which of the following is true about its maturity?
a. It is immature because it is poorly sorted.
b. It is mature because it is poorly sorted.
c. It is mature because it contains mostly rounded grains.
d. It is immature because it contains mostly rounded grains.
e. It is immature because it has clay-sized particles.

Laboratory Manual for Introductory Geology

Bradley Deline,… 2016 Edition

Chapter 10, Problem 15

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Solved by Expert John Barone

06/08/2020

Step 1

Maturity refers to the degree of sorting, rounding, and mineral composition of the grains in a sedimentary rock. A mature sedimentary rock has well-sorted, well-rounded grains and is composed mostly of stable minerals. Now, let's analyze the given options: a. It Show more…

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Closely examine the individual grains in Sample $\mathrm{S} 4 .$ Which of the following is true about its maturity? a. It is immature because it is poorly sorted. b. It is mature because it is poorly sorted. c. It is mature because it contains mostly rounded grains. d. It is immature because it contains mostly rounded grains. e. It is immature because it has clay-sized particles.

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Key Concepts

Sediment Maturity

Sediment maturity describes the overall textural and compositional development of a sediment. A mature sediment typically shows well-rounded grains and homogeneous grain sizes because the grains have undergone extensive transport and weathering, which tends to round off the edges and eliminate less stable minerals.

Grain Roundness

Grain roundness is a measure of how smooth the edges of individual sediment particles are. Higher roundness typically indicates that the grains have experienced prolonged abrasion during transport, suggesting a more mature sediment that has been recycled over long distances.

Sorting

Sorting refers to the uniformity of grain sizes within a sediment sample. Well-sorted sediments, which consist predominantly of grains of similar size, are generally considered more mature, while poorly sorted sediments indicate a less mature depositional history with grains that have experienced minimal reworking.

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