Earth Science

03/05/2022

30/11/2018

*PANI he PANI* 100% PANI k HOSOL K LAI
ZAMEEN KA SURVEY KERWAIN.
*Geological Resistivity Survey*
Hydro Solitions
Cell 03410004431

17/10/2017

Which of the following rocks is used to make cement? Please like n share

Sandstone
Limestone
Conglomerate

05/02/2017

Simple diagram to understand convergent plate boundary and Subduction zone......

31/12/2016

Calcite |
Chemical Formula: CaCO3
Locality: Semmering basis tunnel, Gloggnitz, Industrieviertel, Lower Austria, Austria

31/12/2016

30/12/2016

East looking view of the exquisite Southern Suture, Jijal, Kohistan. The MMT brings the Kohistan Island Arc (KIA) in contact with Indian Plate.

30/12/2016

The Indian subcontinent encompasses the mountainous province of Himalaya girdling the northern border, the almost flat expanse of the Indo-Gangetic Plains in the middle, the uplands and plateaus of the Peninsular India, the narrow coastal plains along the seaboards and the alluvial plains of the Irrawaddy River that is flanked eastwards by the Shan–Karen plateaus in Myanmar. Each of these units is a structurally and lithologically contrasted and physiographically distinctive geomorphic province, having altogether different evolutionary history. They seem to make what the ancient literature describes as Bhâratvarsh belong-
ing to a mega-island or continent called Jambudweep. Within each of these provinces occur many subprovinces of geomorphic units (Chatterjee 1965; Singh 1998; Khullar 1999; Vaidyanadhan 1977, 2002; Tiwari 2003).

30/12/2016

8. OBSIDIAN
What Type of Rock Is It? Igneous
What Does It Look Like? Obsidian is a glass and is usually black, although sometimes it may be slightly grayish or greenish. It may include some white crystals that look like snowflakes (snowflake obsidian). It may include swirls of a red color. Obsidian breaks and chips like glass. The location where the chip came out is scoop shaped, like the inside of a clam shell. The chip often has ridges that that are semicircular. This kind of break is called a conchoidal fracture.
What Minerals Make Up the Rock? black glass
How Was It Formed? Obsidian is volcanic. It forms from rapid cooling lava that has a lot of silica. The lava cools so fast that crystals do not have time to form.

27/12/2016

The basic types of fault. Fault types are distinguished from one another by the direction of slip relative to the fault surface.

25/12/2016

3.CONGLOMERATE
Conglomerate looks like a mixture of sand and different sizes of rounded pebbles. The pebbles are the important observation.
What Minerals Make Up the Rock? mostly quartz
How Was It Formed? Sand and pebbles collect along sea shores, lake shores, or river banks. They are compacted by the weight of sediments that collect above them and cemented by material dissolved in the water that seeps through them.
Related Rocks: Breccia looks like conglomerate, but the "pebbles" in it are jagged and blocky, not rounded.

25/12/2016

4..LIMESTONE
Limestone is usually white, gray, tan, or yellow. It may contain impurities to make it red or black. Fossils are often found in limestone. It may be very smooth or even sugary, fine grained, or medium grained. The powdered rock will usually fizz in white vinegar. Unlike marble, limestone is not composed of visible crystals. What Minerals Make Up the Rock? mostly calcite
How Was It Formed? Most limestone is formed by a chemical reaction in sea water. The reaction makes a lime mud which sinks to the bottom to for the limestone. Some limestones are formed from buried coral reefs.
Related Rocks: Dolostone (doe'-low-stone) looks like limestone, but is composed of the mineral, dolomite. Powdered dolostone does not fizz with white vinegar. Dolostone forms on the ocean floor.