STRATIGRAPHY

MARINE BED

• Bagh bed

• Bap marine bed ~ equivalent to Talchir formation

• Umaria marine bed

• Subathu formation - youngest marine formation

FRESHWATER BED

• Lameta bed

• Nirmar sandstone

GONDWANA SUPERGROUP

• Upper Gondwana : JRM (Jabalpur, Rajmahal, Mahadeva)

• Lower Gondwana : PDT (Panchet, Damuda, Talchir)

UPPER GONDWANA FLORAS

• Ptillophylum - leaf

• Pterophyllum - leaf

• Otozamites - leaf

• Dictyozamites - leaf

• Dichroidium - leaf

• Nilsonia

• Willliamsonia - flower

LOWER GONDWANA FLORAS

• Glossopteris - leaf

• Gangompteris - leaf

• Neograthiopsis - leaf

• Vertebratia - Stem

• Phyllotheca

DIFFERENT ROCK AGES

• Sinbhum granite-A : 3300 ma

• Singhum granite-B : 3100 ma

• Mayurbhanj granite : 3050 ma

• Temperkola granite : 2800 ma

• Berach granite : 2700 ma

• Soda granite

• Bijli Rhyolite : 2400 ma

• Pitepani volcanics

• Dongargrah/Malanjkhand Granite: 2300 ma

• Malani igneous suite : 960 ma