SEDIMENTARY TEXTURE

Question 1

property of grain aggregates

Answer 1

Fabric

Question 2

encompasses all aspects of the external
morphology of particles, including form, roundness and surface
texture

Answer 2

Particle shape

Question 3

refers to the gross, overall morphology or
configuration of the particles

Answer 3

Form

Question 4

measure of sharpness of the corners of a
grain, commonly measured in 2-dimension only

Answer 4

Roundness

Question 5

refers to the microrelief features such
as scratches and pits

Answer 5

Surface texture

Question 6

measure of sharpness of the corners of a
grain, commonly measured in 2-dimension only

Answer 6

Roundness

Question 7

any sandstone containing considerable clay
(> 5%); framework grains poorly sorted and poorly
rounded

Answer 7

Immature

Question 8

low clay content, but grains are still not well
sorted or well rounded

Answer 8

Submature

Question 9

clay content is low , framework grains become
well-sorted, but not yet well rounded

Answer 9

Mature

Question 10

essentially clay-free, and framework
grains are both well sorted and well rounded

Answer 10

Supermature

Question 11

Stages of textural maturity

Answer 11

Immature
Submature
Mature
Supermature

Question 12

function of the size and shape of grains and
post-depositional physical and chemical processes that bring
about compaction of sediment

Answer 12

Grain packing

Question 13

function of the physical processes
and conditions operating at the time of deposition; can be
modified after deposition by the acitivities of organisms
(bioturbation) and to some extent by the processes of
compaction during diagenesis

Answer 13

Grain orientation

Question 14

Arrangement of clastic grains, entirely apart form any
authigenic grains that may have crystallized

Answer 14

Packing

Question 15

potential usefulness in paleocurrent analysis
believed to have an effect on the permeability of sedimentary rocks
to fluid movement- interest to hydrologists and petroleum
geologists may have significance in paleoenvironmental studies

Answer 15

Particle orientation

Question 16

the ratio of pore space in a sediment or sedimentary
rock to the total volume of the rock

Answer 16

Porosity

Question 17

3 type of primary porosity

Answer 17

Intergranular
Intragranukar
Intercrystalline

Question 18

Enumerate 3 Secondary porosity

Answer 18

Solution porosity
Intercrystalline
Fracture porosity

Question 19

the ability of a medium to transmit a fluid. Property of a rock that permits the passage of a fluid through the interconnected pores of the rock

Answer 19

Permeability