Contact metamorphism

October 8, 2019 admin 0

The first mention of contact metamorphism/metamorphic phenomena dates back to the end of the eighteenth century when James Hutton observed that, the rocks surrounding a […]

Metamorphic Zones

Metamorphic Zones

October 3, 2019 admin 1

Explain how index minerals are used to establish the metamorphic grade of a rock body. In areas affected by metamorphism, geologists can observe the usually […]

Earth’s First Life

October 3, 2019 admin 5

Describe some of the hypotheses on the origin of life and the characteristics of early prokaryotes, eukaryotes, and multicelled organisms. The oldest fossils provide evidence […]

What Drives Metamorphism?

September 30, 2019 admin 1

The agents of metamorphism include heat, pressure, directional stress, and chemically active fluids.During metamorphism, rocks may be subjected to all four metamorphic agents simultaneously.However, the […]

Arches of Utah

September 30, 2019 admin 0

Located just outside Moab, Utah, is a wonderland of more than 2,000 natural arches. Towering 85 feet (26 m) overhead, and spanning 65 feet (20 […]

The Devils Marbles

September 30, 2019 admin 0

An early Australian explorer trekking into central Australia found large, round boulders scattered across the surface, sometimes in huge stacks, and sometimes precariously balanced on […]

Traps for Oil and Gas

September 19, 2019 admin 1

Sometimes the upward migration of oil and natural gas is halted. A geologic environment that allows for economically significant amounts of oil and gas to […]