Sedimentary Rocks (Part 3 - Detrital Sedimentary)

Question 1

Classification of Sedimentary Rocks

Answer 1

Gravel, Sand and Mud

Question 2

Grabau name’s of Gravel, Sand and Mud

Answer 2

Gravel - Rudite
Sand - Arenite
Mud - Lutite

Question 3

Sedimentary rocks made up of gravel-sized sediments.

Answer 3

Gravelstones

Question 4

Gravelstones that are made up of rounded sediments.

Answer 4

Conglomerate

Question 5

Gravel stones that are made up of angular sediments.

Answer 5

Breccia (also called Rudites)

Question 6

Gravelstones with an interior source, eroding from the same source and lithifying in place, making the clasts and matrices’ compositions uniform.

Answer 6

Intraformational

Question 7

Gravelstones with composition derived outside of depositional basin, with the clasts and matrices’ composition different from each other.

Answer 7

Extraformational

Question 8

Clast - supported conglomerates

Answer 8

Orthoconglomerate

Question 9

Matrix - supported conglomerates

Answer 9

Paraconglomerate

Question 10

Describes gravelstones with more than 90 % of the framework clasts consisting of a single or few resistant rocks and/or minerals.

Answer 10

Oligomict

Question 11

Describes gravelstones with clasts of different compositions that are prone to weathering and erosion.

Answer 11

Petromict

Question 12

Describes gravelstones with clasts composed of a single
composition.

Answer 12

Monomictic

Question 13

Describes gravelstones with clasts composed ofabout 2-4 different types ofparent rocks.

Answer 13

Diamictic

Question 14

Describes gravelstones with clasts with numerous amounts of types of composition.

Answer 14

Polymictic

Question 15

A type of gravelstone composed of lithified colluvium deposited from mass wasting.

Answer 15

Diamictite

Question 16

Sedimentary rocks made up of sand-sized sediments.

Answer 16

Sandstones (also called Arenites)

Question 17

A classification of sandstones that classifies sandstones based on the proportions of quartz (Q), feldspars (F), and lithic fragments (L).

Answer 17

Folk’s scheme (toblerone)

Question 18

Sandstones with significant amount of feldspars.

Answer 18

Arkose

Question 19

Sandstones with significant amount of mud matrix.

Answer 19

Wacke

Question 20

An older, general term for matrix-rich sandstone.

Answer 20

Graywacke

Question 21

Learn sandstones’ provenances

Answer 21

(wag na)
https://imgur.com/a/XeXXTgy

Question 22

Sediments are derived from volcanic-magmatic arcs formed over subduction zones along convergent plate boundaries.

Answer 22

Magmatic Arc Source

Question 23

3 Subdivisions of Recycled orogen source

Answer 23

(SCF)
Subduction complexes - uplifted recycled accretionary
Collision orogens - uplifted during continental collision
Foreland uplifts - exposed in orogenic belts

Question 24

3 Subdivisions of Continental block source

Answer 24

(CTU)
Craton interior - pre-existing, mature
Transitional cratons - exposed as source rock types
Uplifted basement - exposed in an area of high relief; resulting from uplift

Question 25

Sedimentary rocks made up of mud-sized sediments.

Answer 25

Mudrock

Question 26

Mudrock that are made up of silt-sized sediments.

Answer 26

Siltstone

Question 27

Mudrocks that are made up of clay-sized sediments.

Answer 27

Claystone (also called Lutites)

Question 28

A type of mudrock that shows distinct layering.

Answer 28

Shale

Question 29

Banding observed among mudrocks where they tend to break.

Answer 29

Fissility

Question 30

Smectite-rich claystones that formed from the alteration of volcanic ash deposits from explosive eruptions.

Answer 30

Bentonite

Question 31

Used for construction purposes; building material, pinanggawa raw ng intra

Answer 31

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