How do you know you have Chromite?
Regional SpecificsThe most important clue to identifying chromite is its association with ultrabasic igneous rocks and metamorphic rocks such as serpentinite. Chromite is sometimes slightly magnetic. This can cause it to be confused with magnetite. Chromite and ilmenite have very similar properties. What does chromite look like? Chromite is iron-black in color with a metallic luster,
Which represents the correct sequence of the eras of geologic time from oldest to youngest?
Regional SpecificsEarth’s history is characterized by four eons; in order from oldest to youngest, these are the Hadeon, Archean, Proterozoic, and Phanerozoic. What are the 4 geological eras in order? The Precambrian, Paleozoic, Mesozoic, and Cenozoic Eras The Geologic Time Scale is the history of the Earth broken down into four spans of time marked by
Which is better marble or quartz?
Regional SpecificsIn general, quartz is the more durable of the two materials: it better resists scratches and bacteria and requires less care and maintenance. However, marble does outperform quartz in heat resistance. As an engineered stone created with resin, quartz is not very heat-resistant. What is more expensive quartz or marble? Quartz is less expensive than
How do you study rocks?
Regional SpecificsA knowledge of field relationships between different rock units is fundamental to the study of rocks. It is gained from mapping and observing rocks in the field. In depth analysis of rocks using a microscope or sophisticated analytical laboratory equipment provides important information on their composition. How do geologists study rocks? Rocks are made of
How long is the Mid Ocean Ridge?
Regional Specifics65,000 kilometers65,000 kilometers (40,390 miles) and with more than 90 percent of the mountain range lying in the deep ocean. How long is the Mid-Atlantic Ridge? about 10,000 miles The Mid-Atlantic Ridge is in effect an immensely long mountain chain extending for about 10,000 miles (16,000 km) in a curving path from the Arctic Ocean
What evidence suggests that continents move?
Regional SpecificsThe evidence for continental drift included the fit of the continents; the distribution of ancient fossils, rocks, and mountain ranges; and the locations of ancient climatic zones. What causes continents to move prove it with evidence? The causes of continental drift are perfectly explained by the plate tectonic theory. The earth’s outer shell is composed