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Petrolo-G! > Sed Texture > Flashcards

Sed Texture Flashcards

1
Q

A classification scheme that describes sediments’ particle sizes in epiclastic rocks.

A

Grain size

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2
Q

Used to measure the grain size

A

Udden-Wentworth Scale.

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3
Q

is the component of detrital sedimentary rocks that have particles sizes from sand to gravel.

A

Clast

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4
Q

Coarse fraction

A

Clasts

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5
Q

the mud-sized particles component of detrital sedimentary rocks.

A

Matriz

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6
Q

fine fraction

A

Matriz

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7
Q

A measure of particle population in an attempt to represent the typical particle size in the population.

A

Central measure

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8
Q

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

A

Histogram

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9
Q

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

A

Frequency curve

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10
Q

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

A

Cumulative curve

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11
Q

The most abundant particle size.

A

Mode

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12
Q

The average diameter of
the particles,

A

Graphic geometric mean

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13
Q

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

A

Sieving

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14
Q

Determines or gives information regarding the nature or maturity of a grain.

A

Grain shape

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15
Q

Spheroid particles that have similar dimensions in all directions.

A

Equatant

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16
Q

Rod-shaped particles that have an elongate cylindrical that have on axis much longer than the other two.

A

Prolate

17
Q

Disk-shaped particles that have a flattened cylindrical or disk-like shape where two axes are shorter than the other.

A

Oblate

18
Q

Particles that have a flattened shape where the three axes have three different lengths.

A

Bladed

19
Q

The distribution of grain sizes present within a sedimentary rock.

A

Sorting

20
Q

A quick method of determining the phi size value for any percentile,

A

Sorting coefficient

21
Q

The volume of void space in a sedimentary rock.

A

Porosity

22
Q

The arrangement of grains in a rock.

A

Packing density

23
Q

The extent of how much sedimentary rock has undergone change starting from its parent material(s).

A

Maturity

24
Q

The degree of maturity that can indicate a sedimentary rock’s transportation history.

A

Textural maturity

25
Q

The degree of maturity that measures the amount of components present.

A

Compositional maturity

Petrolo-G! (13 decks)

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