1. DHARWAR
SUPER GROUP

2. CONTENTS:
INTRODUCTION
DHARWAR CRATON
-WDC AND EDC
BABABUDEN-WESTERN GHATS-SHIMOGA
SUPER BELT
CHITRADURGA-GADAG SUPER BELT
EDC
CONCLUSION
REFERENCES

3. INTRODUCTION:-
Tectonic division of indian shield
into five cratons thy are
Dharwar craton
Singhbhum craton
Aravalli craton
Bundelkhand craton
Bastar craton

4. TECTONIC MAP OF INDIA

5. Craton:- a large tectonically stable
block of the earth's crust.
Dharwar craton is divided into two
tectonic blocks in the year 1986 by
Rogers.
Western Dharwar craton
Eastern Dharwar craton
These 2 cratons divided by the chitradurga
shear zone.
The grey gneiss complex covering the
entire craton formerly known as
peninsular gneiss.

6. DHARWAR CRATON:-

7. WDC EDC
SCHIST BELT LARGE WITH
VOLCANICS, SUBORDINATE
SEDIMENTS.
NARROW, WITH GREENSTONE BELTS.
PILLOW BASALTS.
BASEMENT IS PENINSULAR GNEISS.
UNCONFORMITY MARKED BY
QPC.(<3000MY)
DHARWAR BATHOLITH INTRUSIVE
ON ALL SIDES .(2500-2700 MY)
OLDER SEQUENCE (SARGUR
GROUP)AS NARROW BELTS AND
ENCLAVES, ABUNDANT IN THE
SOUTH.
OLDER SEQUENCE(WARANGAL
GROUP) MOSTLY AS ENCLAVES IN
THE NORTH.
INTER MEDIATE PRESSURE
METAMORPHISM.
LOW PRESSURE METAMORPHISM.

9. WDC:-
IT OCCUPIED BY VAST AREAS OF
PENINSULAR INDIA WITH 2 PROMINENT
SUPER BELTS
 Bababudan-western ghats-shimoga
Chitradurga-gadag.
It is belonging to dharwar super group.

10. BABABUDEN-WESTERN GHATS-
SHIMOGA SUPER BELT:
 THIS SUPER BELT SPREAD AN AREA APPROX. 300 KM
LONG AND 100-150KM WIDE.
SCHISTOSE ROCKS OCCUPYING 30000KM SQ.
REAMINING 15000KM SQ, OCCUPIED BY BASEMENT
PENINSULAR GNEISS.
Bababudan SCHIST BELT OCCUPIES AN AREA 2500 SQ,
KM.
A PROMINENT BUT THIN HORIZON OF QUARTZ PEBBL
CONGLOMERATE .
THIS GROUP IS DOMINENTLY MADE UP OF METABASALT
WITH INTERBEDDDED CROSS-STATIFIED QUARZITES,
CAPPED BY A PROMINENT BIF.
AGE IS ABOUT 2700-2800MY.

12. CHITRADURGA-GADAG SUPER
BELT:-
COMMONLY THIS BELT IS
KNOWN AS CHITRADURGA SHIST BELT.
COVER AN AREA IS ABOUT 400KM LONG.
5KM WIDTH IN THE NORTH WITH BULGES OF
ABOUT 25KM.
THIS SCHIST BELT SIGNIFICANCE OF GOLD
AND K-RICH GRANITOIDS.
CONSIST OF PHYLLITE,LIMESTONE,MANGANESE
FORMATOINS AND BIF.

13. EDC:-
OLDER GNIESSES :age is about 3000my . Greenstone belts are
seen in kolar and ramagiri that of putative basement.
Warangal group:-significance difference is that this group
occurs to the east of eastern green stone belts ,whereas eastern
margins of these individual green stone belts do not have QCP and
therefore this group enclaves may be older .
Kolar group(CHITRADURGA
GROUP )
Yaswantanagar
formation(BABABUDA
N GROUP )

15. CONCLUSIONS
Dharwar super group is exposed both
in WDC and EDC.
Age is about 2600-2800MY.
In WDC dharwar super group as
divided into chitradurga and
bababudan group.
In EDC dharwar super group as
divided into kolar and
yashwantanagar formation.

16. References:
Geology of India Volume1
 by M. Ramakrishnan and R.Vaidyanandhan published by
geological society of india , bangalore .2008.
Geology of India and burma.
by M.S. Krishnan. the madras law journal office.
1949.
Geology of india by D.N. wadia.
www.geosocindia.com/abstracts/2009/jan
/fullpapers/f5

17. Thank you