TEXTURES

Question 1

• describes sediments’ particle sizes in epiclastic rocks
• classifies based on logarithmic phi scale using diameter

Answer 1

GRAIN SIZE

Question 2

coarse, particle sizes from sand to gravel

Answer 2

CLASTS

Question 3

fine, mud-sized particles

Answer 3

MATRIX

Question 4

particle population in an attempt to represent the typical particle size in the population

Answer 4

CENTRAL MEASURE

Question 5

bar graph that shows the weight percentage vs. phi values of clasts

Answer 5

HISTORGRAM

Question 6

line graph that shows the weight percentage vs. phi values

Answer 6

FREQUENCY CURVE

Question 7

line graph that shows the cumulative weight percent of all size coarser than, including phi size fraction under consideration, plotted against phi size classes

Answer 7

CUMULATIVE CURVE

Question 8

most abundant particle size

Answer 8

MODE

Question 9

average size of particles

Answer 9

MEAN

Question 10

average diameter of particles

Answer 10

GRAPHIC GEOMETRIC MEAN

Question 11

method of passing soil and sediment samples through a series of stacked mesh to determine the distribution of grain sizes

Answer 11

SIEVING

Question 12

determines information regarding nature/maturity of a grain

Answer 12

GRAIN SHAPE

Question 13

factors affecting grain shape

Answer 13

1. Lithology
2. Hardness

Question 14

spheroid, similar dimensions in all directions

Answer 14

EQUANT

Question 15

rod-shaped, elongated cylindrical that has an axis much longer than the other two

Answer 15

PROLATE

Question 16

disk-shaped flattened cylindrical/disk-like where two axes are shorter than the other

Answer 16

OBLATE

Question 17

flattened, three axes have three different lengths

Answer 17

BLADED

Question 18

distribution of grain sizes present within sedimentary rock

Answer 18

GRAIN ORIENTATION
SORTING

Question 19

quick method to determine phi size value for any percentile

Answer 19

SORTING COEFFICIENT

Question 20

volume of void space in a sedimentary rock

Answer 20

POROSITY

Question 21

arrangement of grains in a rock

Answer 21

PACKING DENSITY

Question 22

degree of how much fluids can pass through materials

Answer 22

PERMEABILITY

Question 23

undergone change starting from its parent material/s.

Answer 23

MATURITY

Question 24

degree of maturity that indicates transportation history

Answer 24

TEXTURAL

Question 25

measures amount of components present

Answer 25

COMPOSITIONAL