Sedimentology - Advanced topics in Geology - Geology & Geophysics Previous Year Questions

1

2008 · Geology & Geophysics · Advanced topics in Geology · Sedimentology

Geology & Geophysics (GG) 2008

The age of the sandstone reservoir in Cambay basin is

A

Cretaceous

B

Eocene

C

Holocene

D

Jurassic

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2

2008 · Geology & Geophysics · Advanced topics in Geology · Sedimentology

Geology & Geophysics (GG) 2008

The composition of a sandstone is as follows: Quartz: 55%, Feldspar: 25%, Rock fragments: 1% and Matrix: 19%
Petrographically, the sandstone is classified as

A

arkose

B

arkosic wacke

C

lithic arenite

D

quartz wacke

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3

2009 · Geology & Geophysics · Advanced topics in Geology · Sedimentology

Geology & Geophysics (GG) 2009

Which depositional environment is indicated for the above sedimentary succession ?

A

Fluvial

B

Eolian

C

Intertidal

D

Deep marine

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4

2009 · Geology & Geophysics · Advanced topics in Geology · Sedimentology

Geology & Geophysics (GG) 2009

What type of paleocurrent pattern is expected from the erosional structures in the succession ?

A

Unimodal

B

Bimodal

C

Bimodal - bipolar

D

Polymodal

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5

2010 · Geology & Geophysics · Advanced topics in Geology · Sedimentology

Geology & Geophysics (GG) 2010

Allochems in a limestone consist of

A

micrite only

B

spar only

C

ooids only

D

bioclasts and ooids

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6

2011 · Geology & Geophysics · Advanced topics in Geology · Sedimentology

Geology & Geophysics (GG) 2011

Which of the following sedimentary structures is NOT a ‘tool mark’?

A

prod cast

B

groove cast

C

flute cast

D

bounce cast

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7

2011 · Geology & Geophysics · Advanced topics in Geology · Sedimentology

Geology & Geophysics (GG) 2011

Which of the following lithostratigraphic units hosts lignite at Neyveli?

A

Ariyalur Formation

B

Cuddalore Formation

C

Kamthi Beds

D

Pali Beds

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8

2011 · Geology & Geophysics · Advanced topics in Geology · Sedimentology

Geology & Geophysics (GG) 2011

The sandstone belongs to the class

A

Quartz wacke

B

Arkosic wacke

C

Arkose

D

Quartz arenite

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9

2011 · Geology & Geophysics · Advanced topics in Geology · Sedimentology

Geology & Geophysics (GG) 2011

In which of the following conditions the CORRECT sandstone class in the previous question might have formed?

A

P, S

B

P, R

C

Q, R

D

Q, S

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10

2013 · Geology & Geophysics · Advanced topics in Geology · Sedimentology

Geology & Geophysics (GG) 2013

Which one of the following sedimentary structure represents the bottom of a bed?

A

Current crescent

B

Desiccation crack

C

Rain print

D

Load cast

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11

2014 · Geology & Geophysics · Advanced topics in Geology · Sedimentology

Geology & Geophysics (GG) 2014

Which one of the following environments is represented by molasse facies?

A

Atectonic

B

Pre-tectonic

C

Syn-tectonic

D

Post-tectonic

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12

2016 · Geology & Geophysics · Advanced topics in Geology · Sedimentology

Geology & Geophysics (GG) 2016

Mud-supported limestone containing greater than 10% allochems is called ____________________.

A

Packstone

B

Wackestone

C

Grainstone

D

Mudstone

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13

2016 · Geology & Geophysics · Advanced topics in Geology · Sedimentology

Geology & Geophysics (GG) 2016

__________ is a well-sorted sandstone containing up to 75% quartz, with rock fragments in excess of feldspar.

A

Arkose

B

Lithic arenite

C

Quartz arenite

D

Feldspathic arenite

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14

2007 · Geology & Geophysics · Advanced topics in Geology · Sedimentology

Geology & Geophysics (GG) 2007

Which is the most common type of porosity in sandstone?

A

Mouldic

B

Intraparticle

C

Interparticle

D

Shelter

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15

2007 · Geology & Geophysics · Advanced topics in Geology · Sedimentology

Geology & Geophysics (GG) 2007

The rose diagram generated from the paleocurrent data is

A

bimodal - bipolar

B

polymodal

C

trimodal

D

unimodal

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16

2007 · Geology & Geophysics · Advanced topics in Geology · Sedimentology

Geology & Geophysics (GG) 2007

Which environment of deposition can explain the above paleocurrent data?

A

Alluvial fan

B

Deep marine

C

Fluvial

D

Tidal flat

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17

2017 · Geology & Geophysics · Advanced topics in Geology · Sedimentology

Geology & Geophysics (GG) 2017

Stylolitic foliation developed during diagenetic processes is typically

A

parallel to bedding.

B

perpendicular to bedding.

C

oblique to bedding.

D

vertical.

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18

2017 · Geology & Geophysics · Advanced topics in Geology · Sedimentology

Geology & Geophysics (GG) 2017

Match the sedimentary rocks and their features listed in Group I with depositional environments listed in Group II.
Group I
(P) Sandstone with herring-bone cross bedding
(Q) Chalk with coccolith
(R) Well sorted arenite with large cross bedding (5-10 m thick)
(S) Poorly sorted sediments with faceted and striated pebbles
Group II
(1) Eolian
(2) Glacial
(3) Sabkha
(4) Tidal
(5) Pelagic

A

P-2, Q-1, R-4, S-5

B

P-4, Q-5, R-1, S-2

C

P-4, Q-1, R-2, S-5

D

P-5, Q-1, R-2, S-3

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19

2018 · Geology & Geophysics · Advanced topics in Geology · Sedimentology

Geology & Geophysics (GG) 2018

A siliciclastic sedimentary rock consisting predominantly of the same type of gravel-sized clasts is called

A

Polymict conglomerate.

B

Arkose.

C

Oligomict conglomerate.

D

Petromict conglomerate.

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20

2018 · Geology & Geophysics · Advanced topics in Geology · Sedimentology

Geology & Geophysics (GG) 2018

Which one of the following is the CORRECT chronological sequence for Iron formations?

A

Algoma type > Superior type > Rapitan type > Minette type

B

Superior type > Algoma type > Rapitan type > Minette type

C

Rapitan type > Minette type > Algoma type > Superior type

D

Algoma type > Minette type > Superior type > Rapitan type

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