STRATIGRAPHY

MARINE BED

• Bagh bed

• Bap marine bed ~ equivalent to Talchir formation

• Umaria marine bed

• Manendragarh marine bed

• Subathu formation - youngest marine formation

FRESHWATER BED

• Lameta bed

• Nirmar sandstone

GLACIAL BEDS

• Talchir beds

• Blaini formation

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

• Erinpura granite : 1100 ma

• Malani igneous suite : 960 ma

DIFFERENT TRAPS

• Rajmahal trap : Jurassic

• Sylhet trap : Eocene

• Deccan trap : Upper cretaceous

• Malani rhyolite : Neo proterozoic

• Dras volcanic : Paleozoic

LOCALITIES AND ORE DEPOSITS

• Malanjhkhand : Copper and Molybdenum

• Pulivendla and Vempalle : Baryte and Asbestos

• Rewa formation - Panna : Diamond

• Ambaji-Deri : Lead Zinc

• Lapsaburu : Kyanite

• Gadag : Gold

FOSSIL GROUP AND AGE OF EXTINCTION

• Trilobite : Permian

• Conodont : Triassic

• Ammonites : Cretaceous

• Belemnites : Cretaceous

• Dinasaur : Cretaceous

• Archaeocytha : Cambrian

IMPORANT FORMATION AND THEIR AGES

• Tal formation : Cambrian

• Baisakhi formation : Mesozoic

• Kopili formation : Cenozoic

• Barakar formation : Paleozoic

• Blaini formation : Glacial derived shale

• Mamal formation : Carboniferous

• Maleri : Triassic

• Dalma volcanics : Meso to paleoproterozoic (Singbhum craton)

• Kamthi formation : Triassic

• Neobolous beds : Cambrian

OROGENY AND THEIR AGE