Petrographic and Mineralogical Synthesis of Sedimentary Rocks of External Zones in Albania

• Author: Majlinda Meçaj - Rexhep Koçi - Irakli Prifti
• Position: Politechnical University of Tirana
• Pages: 65-77

Vo

l.

6

N

o

. 1

M

arch

,

2020

ISS

N 2410-391

8

A

cces online at www.ii

p

ccl.or

g

65

A

cademic Journal o

f

Business,

A

dministration, Law and Social Sciences

II

PCCL Publishin

g

, Graz-

A

ustria

Petrographic and Mineralogical S

y

nthesis of Sedimentar

y

Rocks of External

Zo

n

e

s

i

n

A

lb

a

n

ia

M

a

jl

in

d

a Meça

j

Politechnical

U

niversity o

f

Tirana

Rex

h

e

p

Koç

i

Politechnical

U

niversity o

f

Tirana

I

r

a

kl

i

Pr

i



i

Politechnical

U

niversity o

f

Tirana

Ab

str

a

ct

M

any petrographic and mineralogical studies have been carried out on the sedimentary

s

ection of

I

onian, Kruja and Sazani zones in

A

lbania. The sedimentary rocks are of the Triassic

-

P

liocene age, in this section, and represent many lithological types of rocks.

I

nstitutions,

companies and researchers are interested in the results of petrographic and mineralogy studies

of the sedimentary section on the external

A

lbanides. These studies have been carried out on

outcrop sections and sections crossed by drilling wells. These areas have been also studied

with geophysical methods.

I

n this paper, presents the main petrographic and mineralogical

characteristics of sedimentary rocks of the Triassic-Pliocene age.

A

lso, importance is the

geological and geographic position of the outcrop sections located in the tectonic sketch o

f

A

lbania. The sedimentary limestone section is divided into the carbonate Triassic-

E

ocene (T

3

-

Pg

2

) and terri

g

enous

O

li

g

ocene- Pliocene (P

g

3

-

N

2

). The terrigenous deposits are separated

i

nto the

O

li

g

ocene-Lower Miocene (P

g

3

-

N

1

)

and the Lower Miocene-Pliocene

(

N

1

-

N

)

. For the

e

 ective thickness of the carbonate section, the correlations were divided into two parts; section

of

U

pper Triassic-

U

pper Jurassic and section of Lower Cretaceous-

E

ocene.

I

n the carbonate

s

ection, the lithological packages are separated. Flysch and molasse deposits are divided

i

nto the petrographic and mineralogical formations that vary from one subzone to another.

Nomination and classifi cations are based on petrographic and mineralogical indicators by

m

odels a er the 1990s.

I

n addition to the specifi cations in the lithological characteristics o

f

s

edimentary sections are interpreted paleogeographic and sedimentological assessment of the

se

d

i

m

e

nt

a

t

io

n

e

nv

i

r

o

nm

e

nt.

K

e

y

words: Limestone, terrigenous, turbidity, diagenesis, external zones.

I

ntr

odu

ct

io

n

T

he lithologo-

p

etrogra

p

hic studies on sedimentar

y

rock, in s

p

eci

fi

c sectors o

f

the

e

xternal

A

lbanides, had been

p

er

f

ormed earlier than 1960 b

y

f

oreign s

p

ecialists

b

ased on

fi

eld observations accom

p

anied b

y

rare

p

etrogra

p

hic and mineralogical

de

t

e

rm

i

n

a

t

io

ns.

I

n the

p

eriod 1960-1970 there was

p

rogress o

f

the

p

etrogra

p

h

y

studies. Lithologo

-

p

etrogra

p

hic studies were

p

er

f

ormed almost on the all sorts o

f

sedimentar

y

rocks