Category: Geology

Understanding Crystallization in the Rock Cycle: A Fundamental Process in Rock Formation

What is crystallization in the rock cycle? Crystallization is a crucial process in the rock cycle that helps shape the earth’s crust. It involves the formation of mineral crystals from a liquid or gas state, usually as a result of cooling or evaporation. Crystallization can take place in igneous, metamorphic, and sedimentary rocks, and is

Breathtaking: Mount Everest conquered without oxygen equipment!

No sensible person would have thought it possible: Reinhold Messner and Peter Habeler have climbed the highest mountain on earth without oxygen equipment. Completely exhausted but happy, the two extreme mountaineers arrived at base camp yesterday. Their summit attempt on Everest begins on 8 May, at half past five in the morning, after an icy

The sun rises at the edge of the world

For a long time, the inhabitants of Qaanaaq have persevered in complete darkness. Now, in mid-February, the moment they have been looking forward to for months has arrived. Despite the freezing cold of minus 35 degrees Celsius, they have gathered at midday. As the first rays of sunlight shine into their faces, the people sing

The Canadian Shield

The Canadian Shield refers to the exposed part of the continental crust underlying most of North America. This crust, the “North American craton”, extends from northern Mexico to Greenland and is composed of hard rocks that are at least a billion years old. The rocks of the North American Craton, with the exception of those

What is the basis for the Geologic Time Scale

Asked by: Carlos Weeks The geological time scale is based on the the geological rock record, which includes erosion, mountain building and other geological events. Over hundreds to thousands of millions of years, continents, oceans and mountain ranges have moved vast distances both vertically and horizontally. What is the basis of the geologic time scale

What is slow fast change?

Asked by: Kate Nasby The changes which take place over a long period of time are called slow changes. Examples: Rusting of iron, formation of day and night, ripening of fruits, growing of trees are slow changes. The changes which take place in a short period of time are called fast changes. What is slow

Is it possible for California to fall into the ocean?

Asked by: Kate Nasby No, California is not going to fall into the ocean. California is firmly planted on the top of the earth’s crust in a location where it spans two tectonic plates. Can California fall into the ocean from an earthquake? For those of us who live in inland areas of Southern California,

What are the branches of oceanography?

Asked by: Jorge Pierson Traditionally, we discuss oceanography in terms of four separate but related branches: physical oceanography, chemical oceanography, biological oceanography and geological oceanography. What are the five 5 branches of oceanography? The study of oceanography is divided into these five branches: Biological oceanography. Chemical oceanography. Geological oceanography. Physical oceanography. Paleoceanography. What are the

What is abrasion in glacial erosion?

Asked by: Amanda Rogers As a glacier flows downslope, it drags the rock, sediment, and debris in its basal ice over the bedrock beneath it, grinding it. This process is known as abrasion and produces scratches (striations) in bedrock surface. What is a glacial abrasion? Glacial abrasion is the surface wear achieved by individual clasts,

Is there a big earthquake coming to Alaska?

Asked by: Nora Johnson When did Alaska have a 7.1 earthquake? On November 30, 2018, at 8:29 a.m. AKST (17:29 UTC), a magnitude 7.1 earthquake hit Anchorage in South Central Alaska.2018 Anchorage earthquake. Damage to the Glenn Highway Local date November 30, 2018 Local time 08:29:28 AKST Magnitude 7.1 Mww Depth 46.7 km (29.0 mi)

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