Evolution of Indian Platform

The Indian Platform, also known as the Indian Shield or the Peninsular Shield, is a stable geological region that forms the core of the Indian subcontinent. It has a complex geological history that spans billions of years. Here's an overview of the evolution of the Indian Platform:

1. Archean Eon (4 billion to 2.5 billion years ago):

The earliest geological history of the Indian Platform dates back to the Archean Eon, during which some of the oldest rocks on Earth were formed.

The Dharwar Craton, located in the southern part of the Indian Platform, is one of the prime examples of Archeanage geological formations in India.

2. Proterozoic Eon (2.5 billion to 541 million years ago):

During the Proterozoic Eon, the Indian Platform witnessed significant geological events.

Sedimentary basins formed, leading to the accumulation of thick sequences of sedimentary rocks.

The Vindhyan Supergroup, a prominent sedimentary rock formation, was deposited during this time.

3. Rodinia Supercontinent (1.3 billion to 750 million years ago):

India was part of the supercontinent Rodinia during this period.

It was situated near the southern margin of Rodinia.

4. Breakup of Rodinia and Formation of Gondwana (750 million to 540 million years ago):

Rodinia began to break apart during the Neoproterozoic.

India separated from the supercontinent and was positioned closer to Antarctica, forming part of the Gondwana supercontinent.

5. Cambrian to Devonian Periods (541 million to 358 million years ago):

During this time, India experienced marine sedimentation and the deposition of sedimentary rocks in shallow seas.

6. Carboniferous to Permian Periods (358 million to 252 million years ago):

India was located near the equator and experienced extensive coalforming swamps and glacial deposits.

7. Mesozoic Era (252 million to 66 million years ago):

India remained part of Gondwana during the early Mesozoic, but it began drifting northward.

This northward movement eventually led to its separation from Gondwana and initiated the formation of the Indian subcontinent.

8. Cenozoic Era (66 million years ago to present):

The most significant phase in the evolution of the Indian Platform occurred during the Cenozoic.

India continued to move northward and eventually collided with the Eurasian Plate around 50 million years ago.

This collision resulted in the uplift of the Himalayan mountain range and the Tibetan Plateau, significantly impacting the Indian Platform's geology and topography.

The collision with the Eurasian Plate is a defining event in the evolution of the Indian Platform, shaping its current geological features and creating some of the world's most prominent mountain ranges, including the Himalayas. This collision also continues to influence seismic activity in the region. Overall, the geological evolution of the Indian Platform reflects its role in the assembly of the Indian subcontinent and its dynamic geological history.

Comments

KSHEC Scholarship 2024-25

KSHEC Scholarship 2024-25 Alert! First-Year UG Students Only, Don't Miss This Golden Opportunity! 💡✨ Are you a first-year undergraduate student studying in a Government or Aided College in Kerala? Do you need financial assistance to continue your education without stress? The Kerala State Higher Education Council (KSHEC) Scholarship is here to support YOU! This scholarship is a lifeline for deserving students, helping them focus on their studies without worrying about financial burdens. If you meet the criteria, APPLY NOW and take a step towards a brighter future! 🌟 ✅ Simple Online Application – Quick & easy process! 📌 Who Can Apply? ✔️ First-year UG students ONLY ✔️ Must be studying in an Arts & Science Government or Aided college in Kerala ✔️ Professional Course students are not eligible 🔹 Scholarship Amounts Per Year: 📌 1st Year FYUGP – ₹12,000 📌 2nd Year FYUGP – ₹18,000 📌 3rd Year FYUGP – ₹24,000 📌 4th Year FYUGP – ₹40,000 📌 5th Year PG – ₹60,000 Great News...

Disaster Management

1. Disaster Risk Analysis → Disaster Risk Reduction → Disaster Management Cycle Disaster Risk Analysis is the first step in managing disasters. It involves assessing potential hazards, identifying vulnerable populations, and estimating possible impacts. Once risks are identified, Disaster Risk Reduction (DRR) strategies come into play. DRR aims to reduce risk and enhance resilience through planning, infrastructure development, and policy enforcement. The Disaster Management Cycle then ensures a structured approach by dividing actions into pre-disaster, during-disaster, and post-disaster phases . Example Connection: Imagine a coastal city prone to cyclones: Risk Analysis identifies low-lying areas and weak infrastructure. Risk Reduction includes building seawalls, enforcing strict building codes, and training residents for emergency situations. The Disaster Management Cycle ensures ongoing preparedness, immediate response during a cyclone, and long-term recovery afterw...

Pre During and Post Disaster

Disaster management is a structured approach aimed at reducing risks, responding effectively, and ensuring a swift recovery from disasters. It consists of three main phases: Pre-Disaster (Mitigation & Preparedness), During Disaster (Response), and Post-Disaster (Recovery). These phases involve various strategies, policies, and actions to protect lives, property, and the environment. Below is a breakdown of each phase with key concepts, terminologies, and examples. 1. Pre-Disaster Phase (Mitigation and Preparedness) Mitigation: This phase focuses on reducing the severity of a disaster by minimizing risks and vulnerabilities. It involves structural and non-structural measures. Hazard Identification: Recognizing potential natural and human-made hazards (e.g., earthquakes, floods, industrial accidents). Risk Assessment: Evaluating the probability and consequences of disasters using GIS, remote sensing, and historical data. Vulnerability Analysis: Identifying areas and p...

Mapping Process

The mapping process involves several systematic steps to transform real-world spatial information into a readable, accurate, and useful representation. Below is a structured explanation of each step in the mapping process, with key concepts, terminologies, and examples. 1. Defining the Purpose of the Map Before creating a map, it is essential to determine its purpose and audience . Different maps serve different objectives, such as navigation, analysis, or communication. Types of Maps Based on Purpose: Thematic Maps: Focus on specific subjects (e.g., climate maps, population density maps). Topographic Maps: Show natural and human-made features (e.g., contour maps, landform maps). Tourist Maps: Highlight attractions, roads, and landmarks for travelers. Cadastral Maps: Used in land ownership and property boundaries. Navigational Maps: Used in GPS systems for wayfinding. Example: A disaster risk map for floods will highlight flood-prone areas, emergency shelters, and ...

GIS Concepts

S patial Data Components Location or Position This defines where a spatial object exists on the Earth's surface. It is represented using coordinate systems , such as: Geographic Coordinate System (GCS) – Uses latitude and longitude (e.g., WGS84). Projected Coordinate System (PCS) – Converts Earth's curved surface into a flat map using projections (e.g., UTM, Mercator). Example: The Eiffel Tower is located at 48.8584° N, 2.2945° E in the WGS84 coordinate system. Attribute Data (Descriptive Information About Location) Describes characteristics of spatial features and is stored in attribute tables . Types of attribute data: Nominal Data – Categories without a numerical value (e.g., land use type: residential, commercial). Ordinal Data – Ranked categories (e.g., soil quality: poor, moderate, good). Interval Data – Numeric values without a true zero (e.g., temperature in °C). Ratio Data – Numeric values with a true zero (e.g., population count, rainfall amoun...

Vineesh V, Geography

Search This Blog