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GLE 2024 (Day 1) > STRUCTURAL GEOLOGY HATCHER 15 > Flashcards

STRUCTURAL GEOLOGY HATCHER 15 Flashcards

1
Q

describes the spatial and geometric relationship of all components of a rock

A

Fabric

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2
Q

Structures that pervade the rock mass at the scale of observation or ideally present in all scales of observation

A

Penetrative

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3
Q

A penetrative fabric which consists of parallel grains of clays or micas or thin anastamosing subparallel zones of insoluble residues produced by pressure solution

A

Slaty Clevage

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4
Q

fabrics that are not present in all structures

A

Non Penetrative

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5
Q

Planar and some curved structures in deformed rocks

A

S-surfaces

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6
Q

What are included in S-Surfaces?

A

Cleavage
Foliations
Bedding

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7
Q

Cleavage that pervades the rocks mass

A

Continuous Cleavage

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8
Q

Cleavage that can be resolved into domains of uncleaved rock separated by cleavage planes

A

Spaced Clevage

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9
Q

Uncleaved zones between cleavage surfaces

A

Microlithons

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10
Q

Type of spaced cleavage which is cross cutting and not related to the original layering

A

Disjunctive Cleavage

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11
Q

Type of spaced cleavage which crenulates existing layers

A

Crenulation Cleavage

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12
Q

Arrange cleavages in terms of spacing

A

Continuous Cleavage
Slaty Cleavage
Crenulation
Anastamosing
Isolated stylolites

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13
Q

Subdivisions of Crenulation Cleavage

A

Discrete
Zonal

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14
Q

Subdivisions of Disjunctive Cleavage

A

Stylolytic
Anastamosing
Rough
Smooth

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15
Q

Produces spaced cleavage by dissolving most soluble parts of a rock mass leaving behind discrete insoluble residues in irregular planar zones

A

Pressure Solution

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16
Q

Cleavage marked by small scale crinkling that are spaced and assymmetric which commonly forms by deformation of formerly formed cleavage

A

Crenulation Cleavage

17
Q

Collective term for various celavage type and also refers to planar structures in rocks

A

Foliations

18
Q

Process which involves formation of new layering by recrystallization or pressure solution by reorganizing chemical components of a rock to produce new minerals with new orientations

A

Metamorphic Differentiation

19
Q

Foliations produced during progressive deformation and metamorphism through recrystallization

A

Differentiated layering

20
Q

A phenomenon which occurs where texture and composition- ductility- vary from layer to layer in arock thus the angle between cleavage and bedding changes as the cleavage passes from one layer to another

A

Cleavage Refraction

21
Q

Folds where in fold axis is not coincident with the cleavage

A

Transected fold

22
Q

Transformation of orginall beddig by folding, ductile shear, or other processes into parallelism with cleavge or foliation through progressive deformation

A

Transposition

GLE 2024 (Day 1) (34 decks)

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