Tagged: geology

Rootless Cones at Mount Pavagarh, Gujarat(Deccan traps) 0

Rootless Cones at Mount Pavagarh, Gujarat(Deccan traps)

ROOTLESS CONES Rootless cones, also (erroneously) called pseudocraters, form due to explosions that ensue whena lava flow enters a surface water body, ice, or wet ground. They do not represent primary vents connected by...

Tourmaline crystallization (Boron Metasomatism) in granite at Champaner, Gujarat 0

Tourmaline crystallization (Boron Metasomatism) in granite at Champaner, Gujarat

This granite is named as Unclassified granite and gneiss by GSI (Geological Survey of India) workers. Within a few meters we can see gneiss. At places there is tourmaline crystallization due to Boron Metasomatism....

Plumose marking or Plume Structure 0

Plumose marking or Plume Structure

A quick blog on                    Plumose markings or Plume structure                                      Joint surfaces are sometimes have characteristic surface markings. They are of two types Hackle marks and Rib Marks. Plumose or Plume structure is the most...

0

Its Dune Time!!

Here are some amazing pictures of Sam Dune Field in Rajasthan. Enjoy.Dunes are the accumulation of sand or loose sediments that are formed due to aeolian processes.   Geology Freak by Abhishek Tiwari is licensed under a Creative...

2951 - Iron Duricrust with Lisangang structures 0

Iron Duricrust with Lisangang structures

A Duricrust means Hard crust (Latin, Duri= Hard ). Duricrusts are surface or near-surface of the Earth consisting of a hardened accumulation of silica (SiO2), alumina (Al2O3), and iron oxide (Fe2O3), in varying proportions.  The...

“Pterosaurs – The Flying Reptiles” – at Balasinor Jurassic Park, Gujarat, India 0

“Pterosaurs – The Flying Reptiles” – at Balasinor Jurassic Park, Gujarat, India

“Pterosaurs – The Flying Reptiles” – these were the first creatures other than insects to successfully populate and rule the skies. They range from late triassic to upper cretaceous. Their advanced forms are seen...

“Titanosaurus – the last sauropod” – at Balasinor Jurassic Park, Gujarat, India 0

“Titanosaurus – the last sauropod” – at Balasinor Jurassic Park, Gujarat, India

“Titanosaurus – the last sauropod” – in early cretaceous time (about 140 m.y.) Diplodocoids and Brachiosaurs were declining. However, this didn’t mean that sauropods as a whole were destined for early extinction; an offshoot...

“Titanosaurus – the last sauropod” – at Balasinor Jurassic Park, Gujarat, India 0

“Titanosaurus – the last sauropod” – at Balasinor Jurassic Park, Gujarat, India

“Titanosaurus – the last sauropod” – in early cretaceous time (about 140 m.y.) Diplodocoids and Brachiosaurs were declining. However, this didn’t mean that sauropods as a whole were destined for early extinction; an offshoot...