GEOMORPHOLOGY (STRUCTURAL)

Question 1

What are structural landforms?

Answer 1

Geomorphic features controlled by underlying geologic structure and the distribution of rocks with different resistances to erosion

Question 2

Plutons with dome-shaped geometry

Answer 2

Batholiths, Laccoliths

Question 3

Pluton with subhorizontal shape

Answer 3

Sills

Question 4

Pluton with steep attitude

Answer 4

Dykes, volcanic necks

Question 5

what are the mechanical weakness in igneous rocks?

Answer 5

fractures anda faults

Question 6

What are the usual mechanical weakness in sed rocks?

Answer 6

Bedding planes, joints. faults

Question 7

Flat topped hills with steep slopes in which an upper resistant caprock protects the underlying softer sediments and is relatively large residuals

Answer 7

Mesa

Question 8

Steep sloped with flat top but hills with limited areal extent

Answer 8

Butte

Question 9

These are sed successions with a constant dip.

Answer 9

Homoclinal structures “Homo”-one “Clinal”-inclined

Question 10

An assymertric ridge (hindi pantay/wlang symmetry) build of dipping sed rocks of alternating resistance against weathering and erosion, elongated along the strike wherein the steep front slope is opposite to the dip while the gentler slope is parallel to the dip

Answer 10

Cuestas

Question 11

A sharp crested rige of hard rock, with steeply dipping strata usually >20 deg and steep near-symmetrical slopes which is a result of slow differential eroiion overtime of alternating hard and rock strata

Answer 11

Hogback

Question 12

Drainage flowing in the dip direction?

Answer 12

Consequent/dip drainage

Question 13

Drainange flowing opposite to the dip?

Answer 13

obsequent/antidip drainage

Question 14

drainage flowing parallel to the strike

Answer 14

subsequent/strike drianage

Question 15

V-shaped features with apexes pointing upslope in the interfluves and downstream valleys formed by incision of evenly spaced transverse gullies into dipping and well-bedded strat sequence.

Answer 15

Chevron

Question 16

individualized resistant beds forming steeply inclined fin-like facets due to differential erotion in the interfluves

Answer 16

Flatirons

Question 17

evelops where horizontal or very gently tilted strat bend abruptly along a narrow zone forming a step-like fold

Answer 17

Monocline fold

Question 18

a feature whose face corresponds to an abrupt dip slope associated with forward tolted middle limb

Answer 18

Monoclinal Scarp

Question 19

a concordant topography consist of a series of ridges associated with anticleines

Answer 19

Anticlinal ridge

Question 20

a valley along axial zone which is a result of differential erosion of a soft sedimented core of anticlines

Answer 20

combe

Question 21

A water gap which perpendicularly breached an anticlinal ridge

Answer 21

Cluse

Question 22

A discordant relief of a hanging syncline

Answer 22

Perched syncline

Question 23

Monolith-like structural landform of conglomerates with vertical cliffs developed by differential weathering and eroision controlled by vertical fractures

Answer 23

Conglomerate Pinnacle

Question 24

Curved cavities developed in rock cliffs

Answer 24

Alcoves

Question 25

Surface forming domes-shaped extrusions of salt fromations where the rate of salt exceed surface lowering mainly related to dissolution

Answer 25

Salt domes

Question 26

Salt tectonics or movement of salt and salt bodies

Answer 26

Halokinesis

Question 27

Piercing of overlying brittle rock by a more mobile and ductilely deformable material

Answer 27

Diapirism

Question 28

glacier like salt lobes that override the adjoining country rock as a viscous flow

Answer 28

Namakiers/Salt glcier