Shield Volcano

There are many volcanoes around the world, one might think there are all the same but in fact, volcanoes are separated into three categories. The three categories that volcanoes are separated to is composite, cinder cones, and shield volcanoes. Shield volcanoes have been around for some time now but what are shield volcanoes and where … Read more

The Eocene epoch

An element of the paradigm of the Grande Coupure was the apparent extinction of all European primates at the Coupure: the recent discovery (Kohler and Moya-Sola 1999) of a mouse-sized early Oligocene omomyid, reflecting the better survival chances of small mammals, further undercut the Grand Coupure paradigm. Whether this abrupt change was caused by climate … Read more

How to predict Earthquake

Earthquake is a violent and sudden shock of the earth, which is often caused by two layers of the ground slipping from one another. Earthquakes are measured in accordance with their magnitudes. The earthquakes with higher magnitudes have higher destruction levels. Scientists believe that earthquakes can occur anywhere, anytime, and are unpredictable. Although the engineering … Read more

The New Madrid earthquakes of 1811–12

The New Madrid earthquakes of 1811–12, were three large earthquakes that happened near New Madrid, Missouri, from December 1811 to February 1812. There were thousands of aftershocks, about 1,874 of them were so large that they could be felt as far as Louisville, Kentucky, almost 190 miles away. It is unknown how many lives were … Read more

Lava Domes: what is it?

Lava domes are found in volcanic regions throughout the world. They are unique and different in a lot of ways than other volcanic activities. According to, “Lava domes, also known as volcanic domes, are bulbous mounds formed via the slow eruption of viscous lava from a volcano.” For example, lava domes can be compared … Read more

Earthquakes Definition

To begin with, according to U.S. Representative for Illinois’s 9th congressional district Jan Schakowsky an earthquake is “There is a lot that happens around the world we cannot control. We cannot stop earthquakes, we cannot prevent droughts, and we cannot prevent all conflict, but when we know where the hungry, the homeless and the sick … Read more


The drainage pattern of an area depends upon following factors Geological time period of drainage basin. Nature, structure and type of rocks. Slope and topography of that area. Rainfall, amount of flow and periodicity of flow of water. TYPES OF DRAINAGE PATTERN Dendritic the term dendritic originiates fromgreek word dendrites (pertaining like a tree). In … Read more

Opal Fluorite Tiffany Stone

The Tiffany Stone is the name of a purple, blue and white gem that can be cut and polished into stunning beads, cabochons and tumbled stones. Geologically, Tiffany stone is a rock composed primarily of fluorite with small amounts of calcite, opal, quartz, dolomite, Bertrandite, chalcedony, and other materials. These gems contain between one and … Read more

Ethiopian Opal Treatments

Ethiopian opals, many of them are sold in their natural state. Others are treated, for example, dye, smoke and sugar/acid treatments. All of these treatments make the opal less expensive, and when the opal is natural it is far more expensive than the treated ones. The treated opals can cost less or more than the … Read more

The coastal plains of India

The coastal plains of India are settled on the Arabian Sea coast within the west and on the Bay of Bengal coast within the east. According to their location to the east or west of the peninsular, they’re called: East coastal plain, and West coastal plain. This east coastal plain begins from the north with … Read more

Composite Volcanoes – the most explosive volcanoes

Composite volcanoes, also known as stratovolcanoes, are a lot more explosive than other volcanoes. Stratovolcanoes are one of the most dangerous types of volcanoes. The large, cone-shaped volcanoes form on subduction zones called plate boundaries. The magma contains more silica making it more viscous. The thick, viscous magma plugs up the volcano and causes pressure … Read more

The Origin of Earthquakes

Mr. Sanchez ELA Period 2 Chose grade level 30 January 2018 How Earthquakes Happen? Parts of an Earthquake? Earthquakes happen when two pieces of Earth all of the sudden slip past each other. The surfaces that slip past each other are called fault line or fault plane. An earthquake starts in the hypocenter, which is … Read more

What is a Diorite?

Specific Diorite is a coarse-grained, intrusive igneous rock that contains a mixture of feldspar, pyroxene, hornblende, and sometimes quartz. One of the most familiar specimens is called “salt and pepper” It is given that name because of its appearance. It is produced when White Plagioclase Contrasting with Black Hornblende and Biotite combine below earth’s surface. … Read more


Notes on the lithosphere- (rock sphere) Upper most part is crust of earth. Compiled of rocks of outer crust. Outermost shell. Upper part- rocks we see at and near the earths surface. Crust is 5 to 10 km thick under most oceans and 24 to 60 km thick under the continents. The lithosphere under the … Read more

Field Guide to Geology

A 6 page book report on “The Field Guide to Geology” by David Lambert. Lambert is known for his clear and unique style of cataloging information so that laymen can readily understand the subject. This book is no exception to that rule. It is a very clear and concise introduction to the world of geology, … Read more