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How do you read stratigraphy?
Stratigraphy is the study of layered materials (strata) that were deposited over time. The basic law of stratigraphy, the law of superposition, states that lower layers are older than upper layers, unless the sequence has been overturned.
What is Indian stratigraphy?
STRATIGRAPHY. 1 INTRODUCTION. 1.1 The study of stratified rocks is called stratigraphy. It’s the branch of geology that deals with the description, correlation, and interpretation of stratified sediments and stratified rocks on and in the Earth.
What is stratigraphy in simple words?
Definition of stratigraphy 1 : geology that deals with the origin, composition, distribution, and succession of strata. 2 : the arrangement of strata.
What are the four basic principles of stratigraphy?
The four laws are the law of superposition, law of original horizontality, law of cross-cutting relationships, and law of lateral continuity.
Who discovered stratigraphy?
Catholic priest Nicholas Steno established the theoretical basis for stratigraphy when he introduced the law of superposition, the principle of original horizontality and the principle of lateral continuity in a 1669 work on the fossilization of organic remains in layers of sediment.
Who introduced stratigraphy in Indian Archaeology?
8. Conserving archaeological resources. Stratigraphy: The concept of stratigraphy in geology had been based on the publication of the book Principles of Geology by Sir Charles Lyell in 1830.
How many cratons are there in India?
Indian shield has five distinct cratonic blocks, namely Dharwar craton (DC), Bastar craton (BC), Singhbhum craton (SC), Bundelkhand craton (BkC) and Aravalli craton (AC), all comprising greenstone-gneiss in different abundance ratios.
What is the age of Muth Quartzite?
Devonian age
Muth quartzite- this formation of the Spiti area consists of about 100m thick succession of white and green quartzite. It is of Devonian age.
Who invented stratigraphy?
Why do we study stratigraphy?
stratigraphy, scientific discipline concerned with the description of rock successions and their interpretation in terms of a general time scale. It provides a basis for historical geology, and its principles and methods have found application in such fields as petroleum geology and archaeology.
What is stratigraphy PDF?
Stratigraphy is That branch of geology that deals with formation, composition, sequence, and correlation of stratified rocks. Since the whole Earth is stratified, at least in a broad sense, bodies of all the different types of rocks—igneous, sedimentary, metamorphic—are subject to stratigraphic study and analysis.
What are the different types of stratigraphy?
There are several types of stratigraphy that are described below.
- Geochronology – Radiometric Stratigraphy.
- Magnetostratigraphy.
- Stratigraphic Classification, Terminology and Procedure.
- Facies Stratigraphy.
- Quantitative Stratigraphy.
- Sequence Stratigraphy.
How is the Jurassic system represented in Indian stratigraphy?
Jurassic System overlies Triassic System rocks in the Standard Stratigraphic Scale and is well represented in Indian Stratigraphy both in extra-Peninsular and Peninsular India. In the extra-Peninsula, the Jurassic rocks of marine facies conformably overlie in the Triassic rocks at many places such as in Spiti, Kashmir and Salt Range.
What are the different stratigraphic boundaries in India?
Stratigraphic Boundaries in India –Archean- Proterozoic, Precambrian- Cambrian, Permo- Triassic, K-T Gondwana Sequence Jurassic of Kachchh and Jurassic of Rajasthan Cretaceous of Narmada valley/ Bagh Beds, Cretaceous of Tamil Nadu and Meghalaya Deccan Volcanic Province.
What is the most important stratigraphical formation in Kutch?
Jurassic rocks are regarded as the oldest (for the greater part) and most important stratigraphical formations in Kutch (Gujarat state). The formations are about 2000 m thick and rest in most cases over the oldest Pre-Cambrian.
Which geologic region makes up the Tripartite physiographic regions of India?
The last major geologic region making up the tripartite physiographic regions of India is the Indo-Gangetic Plain. This region is named for two major rivers in India, the Indus and the Ganges. The Indus river flows from Western Tibet, through Northwestern India to the Arabian Sea.