its the stratigraphic description of Jurassic period in geological time scale restricted to Indian origin and its Jurassic location and its boundary

1. UNIVERSITY OF MYSORE
Dos EARYH SCIENCE
By;
M AFRIDI AZEEZ
MSc seminar
Dos; EARTH SCIENCE
University of Mysore
To;
STATRIGRAPHY OF INDIA
Dos; EARTH SCIENCE
University of Mysore
Topic on;
JURASSIC
KUTCH, RAJASTHAN, JAMMU AND KASHMIR,
HIMACHAL PRADESH, UTTARANCHAL, JHARKHAND
AND BHUTAN

2. JURASSIC
KUTCH, RAJASTHAN, JAMMU AND KASHMIR, HIMACHAL PRADESH,
UTTARANCHAL, JHARKHAND AND BHUTAN

3. CONTENTS
• Welcome to Jurassic word
• Jurassic characters
• Jurassic bounders in India
• Kutch
• Rajasthan
• Jammu and Kashmir
• Himachal Pradesh
• Uttaranchal
• Jharkhand
• Bhutan

4. Welcome to Jurassic
1. The Jurassic Period was the second segment of the
Mesozoic Era. It occurred from 205 to 145 million
years ago,
2. following the Triassic Period and preceding the
Cretaceous Period
3. The southern half, Gondwana, was drifting into an
eastern segment that would form Antarctica,
Madagascar, India and Australia,
4. This rifting, along with generally warmer global
temperatures, allowed for diversification and dominance
of the reptiles known as dinosaurs.

5. Jurassic characters
1. Rich and divers marine life,
2. Invertebrates group ; (Mollusca, cephalopods, bivalves gastropods,
brachiopods, corals, bryozoan),
3. Vertebrates group; reptiles, crocodiles, fish and primitive mammal
4. Jurassic rocks are exceptionally rich in ammonite assemblage
5. Significant and rapid change in evolution and extinction of species from
Jurassic to Triassic.
6. Triassic-Jurassic is the lithological continuity of Himalaya lithology
7. Total life time of Jurassic is roughly about 60 million years from 205-145
million years.

6. Jurassic of Kutch
formation of Kutch land
form
• The evolution of the western continental – margin
basins of India is related to the breakup of Gondwana
in the Late Triassic/ Early Jurassic and the subsequent
spreading history of the Eastern Indian Ocean.
• During Late Triassic, NW part of Indian continental
margin experienced lithospheric stretching and rifting.
• A series of regional and local horsts and grabens
resulted in response to rifting along the dominant
basement tectonic trends ( NNW- SSE, NE-SW ANDD
ENE-WSW)
• Rifting led to depression and formation of rift valleys
oriented EW.

8. Depositional sites were between uplifted
region:
Boundaries; North :Tharad – Nagar Parkar Ridge,
South : Saurashtra High, East : Radhanpur – Barmer
High,
NE – SW trending high divides the basin into -
Western – Progressively thick and facies variation
of sediments. And Eastern - Shallow Water
sediments.
These sediments are laid down on the Archaean and
Proterozoic basement and Sedimentation started in
mid- Jurassic
Boundaries and lithology of Kutch

9. Stratigraphy of Kutch
• Patcham Formation ( Jhurio )
• Chari Formation (Jumara)
• Katrol Formation ( Jhuran)

10. Patcham Formation ( Jhurio )
• Bajocian – Early Callovian
• Carbonate – shale association.
• Upper Part : Bioclastic Limestone.
• Fossils : Corals, molluscs, brachiopods,
ammonites and bryozoans and foraminifers.
• Lower Part : Shale – limestone interbeds with
golden oolites.

11. Chari Formation (Jumara)
• Laminated shales with intercalation of
siltstone, marl and bioclastic limestone
• Environment : Deltaic
• Dhosa Oolite : Characteristic golden - colored
Oolitic Limestone.
-----------------PARACONFORMITY----------------

12. Katrol Formation ( Jhuran)
• Upper Jurassic to Early Cretaceous
(Kimmeridgian – Neocomanian )
• Thick coarsening – upwards succession of crossbedded sandstone and
shale.
• Ferruginous concretions.
• Yellow – Brown, cross-bedded feldspathic sandstone.
• Cyclic interbeds of yellow- laminated Sandstone
• Grey carbonaceous shale.
• Locally Kaolinitic white shale.

13. RAJASTHAN
The lathi formation, exposed in Jaisalmer district at Odania and Thaiat
is mainly an arenaceous sequence of ill-sandstones, ferruginous
siltstone, purplish white clay and conglomerate
the exposed thickness is around 350 m
The floral remains reported include fossil wood belonging to
gymnosperm, piltophyllum and brachiopods, cephalopods
ammonoids bearing 10 m interval is developed in a clastic facies
(shale/siltstone)

14. Himachal Pradesh
• The spiti formation comprises black shale tending to be splintery, fine
grained sandstone and siltstone
• The important fossil evidences are ;
• Brachiopods
• Cephalopods
• Bivalves
The spiti formation was deposited through a slow rate of sedimentation on shelf mud
environment. The basin witnessed occasional mudflows and frequent hard ground
formation.

15. Uttarakhand Jharkhand
• The kiogad formation in the niti
area in Uttarakhand is made up
of lapathal, chhojan and spiti
members
• A rich assemblage of
dinoflagellate cyste and
acritarchs along with some
spores and pollen grains are
recovered.
• Rajmahal basin; the lowermost
first infra-trappean bed,
Jharkhand contains most of the
forms found in the laptal
members in Niti

16. Bhutan
In the Bhutan Himalaya, the late Jurassic-early
cretaceous lingshi formation is preserved in three
isolated synclines. The formation is represented by an
agrilo-arenaceous sequence, in which are present
marine and also plant fossils, the sequence is regarded
to have been deposited in a near estuarine/tidal flat,
where plant fragments could drift without getting
damaged.

17. Conclusion
• Kutch is being the prominent Jurassic formations
• Rock bedding containing sedimentary grey sandstone, conglomerate,
shale and siltstone are Jurassic evidences
• Fossil evidences such as
• Brachiopod and ammoniates are the prominent indicators
• Stretching or elongation of NW direction of beds are Jurassic
indicators

18. reference
• Geology of India volume 2
-M.Ramakrishnan and R.Vaidyanadhan
Page number 93 to 102
• Basic dating and pictures copied here are from online internet sources
which are not subjected to copyrights.