Skip to main content

UPSC Geography 08 - Volcanoes

This Post and the attached video will explain the following points of Micro-Notes on UPSC Geography 08 - Volcanoes. Copy & Note it down carefully, as it will be very useful in Fast Revision of the entire topic of "UPSC Geography 08 - Volcanoes".

UPSC Geography 08 - Volcanoes


Reasons of Volcanic Eruption

  • Plates Subduction
  • Plates Separation
  • Upper mantle eruption
  • Pacific Ring of Fire


Terms
  • Magma- Inside (upper Mantle- Peridotite)
  • Lava- Outside
  • Active Volcano
  • Dormant
  • Extinct
  • Angle of Repose
  • Cinder Cone
  • Sills, Dykes

Volcano Types
  • Magmatic- Erupts in fissure due to decompression
  1. Icelandic (Sheet)
  2. Strombolian (Constant)
  3. Vulcanian (cauliflower)
  4. Hawaii (Peaceful)
  5. Plinian (mt Vesuvius Italy 79 AD)
  • Phreatomagmatic- due to compression - Interaction between water & magma-rapid cooling
  • Phreatic Eruptions: Steam Explosion-loud
  • Surtseyan eruption- Shallow Sea
  • Limnic - Lakes
  • Submarine eruption, Sub-glacial eruption
Eruption Materials
  • Bomb >2.5 inch
  • Lapilli <2.5 inch
  • Pyroclastic Rock
  • Pyroclastic Flow- Avalanche

Famous Volcanoes
  • Mt kea - Tallest
  • Ojas de Salado (Chile -Argentina)
  • Cotopaxi (Ecuador)
  • Popocatepetl (Mexico)
  • Barren Island - India- dormant







** Above Video is created by KapsOne Studies and Placement Center, Nagpur for Guidance of UPSC Civil Service (IAS /IPS / IFS / IRS / SSC / Railways / NDA), MPSC Rajyaseva, UPPSC, MPPSC, BPSC, RPSC, NCERT Aspirants on UPSC Geography 08 - Volcanoes.


Labels:

Comments

Post a Comment

Popular posts from this blog

UPSC Indian Geography 04 - Indian Plateaus (Central & South India)

This Post and the attached video will explain the following points of Micro-Notes on UPSC Indian Geography 04 - Indian Plateaus (Central & South India) . Copy & Note it down carefully, as it will be very useful in Fast Revision of the entire topic of " UPSC Indian Geography 04 - Indian Plateaus (Central & South India) ". UPSC Indian Geography 04 - Indian Plateaus (Central & South India) Central India Plateaus Malwa plateau Bundelkhand plateau Rajpipla hill (gujrat)- Satpura hills (dhoopgarh pachmarhi) - Mahadeo (betul)- maikal Hills (balaghat), Baghelkhand- east of maikal Hills- son & mahanadi rivers  Kaimur Hills - North of Baghelkhand Rajmahal Hills-Garo gap Chota Nagpur Plateau Second largest plateau- Patlands,  Hazaribag & ranchi plateau, Chhattisgarh Plateau - Ramgarh hills, dandakaranya,  Bastar Plateau Deccan Plateau Largest:  Mysore plateau-malnad,  Telangana plateau- Seshachalam, Nallamal...
Post a Comment
Read more

UPSC Indian Geography 05- Western Ghats & Islands

This Post and the attached video will explain the following points of Micro-Notes on UPSC Indian Geography 05- Western Ghats & Islands . Copy & Note it down carefully, as it will be very useful for the  Fast Revision of the entire topic of " UPSC Indian Geography 05- Western Ghats & Islands ". UPSC Indian Geography 05- Western Ghats & Islands Western Ghats Block Mountains 13 National Parks, 2 Bioreserves Mahabaleshwar Plateau: borghat pass ( Bombay-Pune), Thal Ghat pass (Nashik) Sahyadri Mountains : joins Nilgiri near Gudalur- jog or Gersoppa Falls-Sharavathi river, Nilgiri Mountains- Palghat pass ( Annamalai), Palani Hills, Shencottah pass (Cardamom Hills), Anginda Peak Eastern Ghats Islands of India Andaman & Nicobar Islands 247 ( 204+ 43),  Andaman: North (Saddle peak) , Middle, South (Jarawa tribe), Little (Duncan passage, Ong tribe), Strait Island (Andamanese), Galathea park, chattan Island (forest department), Mt Harriet ...
Post a Comment
Read more

UPSC Geography 05- Theories of Planets Formation

This Post and the attached video will explain the following points of Micro-Notes on  UPSC Geography 05- Theories of Planets Formation . Copy & Note it down carefully, as it will be very useful in Fast Revision of the entire topic of " UPSC Geography 05- Theories of Planets Formation ". UPSC Geography 05- Theories of Planets Formation Gaseous Hypothesis Theory considers that the earth originated as a hot mass and cooled slowly to develop a solid mass like body Given by kant (18th Century) Nebular Hypothesis Given by Simon Laplace 1749 Planets formed from rings Tidal Hypothesis Given by Jeans and Jeffreys 1919 tidal interaction between the Sun and a passing star would raise tides on the Sun resulting in the loss of a single cigar-shaped filament of hot gas. This hot gas would then condense directly into the planets instead of going through a planetesimal stage. The central section of the "cigar" would give rise to the largest pla...
Post a Comment
Read more