AGE PROBLEMS PERTAINING TO INDIAN STRATIGRAPHY

Age Problems Pertaining to Indian Stratigraphy

Age Problems in Indian Stratigraphy

• India's geological past is like a complicated tapestry made of different rock forms and colourful fossils.
• But because these geological groups are so complicated, it can be hard to figure out how old they are.

1. Lack of Reliable Dating Methods

• Sparse Fossil Record: Some layers have a lot of fossils, but others don't have many, which makes biostratigraphic dating harder.
• Radiometric dating is very important, but it can't always be used because it's hard to find the right materials or it costs a lot to analyse them.

2. Complex Tectonic History

• Multiple orogenies: As India travelled around the world, mountains were formed several times, causing a lot of change and distortion. This changes the way rocks work, which makes it harder to figure out what happened in natural time.
• Regional Differences: The Indian subcontinent is very big and has a very different natural past, which makes it hard to compare different areas.

3. Difficulties in Establishing Correlation

• Limited Stratigraphic Exposure: Older rocks are hidden by younger sands that cover large parts of the Indian subcontinent.
• Lack of Accurate Correlation: It can be hard to make clear links between different geographic units that are far apart, which makes figuring out how old something is unclear.

Age Problems

1.   The Precambrian Era

• Lack of Well-Defined Biostratigraphic Markers: It is hard to figure out how old something is based on remains from the Precambrian period.
• Extreme Metamorphism and Deformation: It is hard to find specific geological events and connect layers when there is a lot of change and deformation.

2. The Paleozoic Era

• Discontinuous Fossiliferous Units: The Paleozoic record is often broken up, with breaks in the layers that make it hard to get a continuous age estimate.
• Problems with Global Correlation: It can be hard to match Indian units with global standards because fossil collections vary from place to place.

3.  Mesozoic and Cenozoic Periods

• Uncertainties in Paleogeographic Reconstructions: Knowing about India's past geography is important for correctly figuring out where rocks were formed and how old they are.
• Lack of Consistent Biostratigraphic Frameworks: It is still hard to set up consistent biostratigraphic frameworks across different areas, even though fossils are more common in these time periods.
• Improvements in Dating Methods: It is very important to come up with new and more accurate dating methods, such as improved radioactive methods and new biostratigraphic approaches.
• Integrated Stratigraphic Studies: It is important to use geological, paleontological, and geophysics data together to make full stratigraphic frames.
• International Collaboration: Setting up standard chronostratigraphic models for Indian forms with the help of researchers from all over the world will make future studies easier.

IMAGE SOURCE (THUMBNAIL)