on April 16, 2022
What is the biggest earthquake in San Diego?
GeologyAn earthquake of magnitude 4.1 was recorded Sunday morning in northern San Diego County, the U.S. Geological Survey said. The quake, at 9:46 a.m., was centered in Palomar Mountain State Park, 18 miles northeast of Escondido and 3 miles from the Palomar Observatory. The area is near the Elsinore fault zone. When was the last
on April 16, 2022
What are the top ten most dangerous volcanoes?
GeologyThe World’s Most Dangerous Volcanoes Mount St. Helens, Washington. … Mount Kilauea, Hawaii. The world’s most active volcanic mass, Kilauea is home to many frequent eruptions. … Mayon Volcano, The Philippines. … Redoubt Volcano, Alaska. … Mount Pinatubo, The Philippines. … Mount Agung, Bali. … Mount Fuji, Japan. … Popocatépetl, Mexico. What are the 5
on April 16, 2022
What is the streak of olivine?
GeologyDiagnostic Features: Distinguished usually by its glassy luster, conchoidal fracture, green color, and granular nature.…Olivine Physical Properties. Chemical Classification Silicate Streak Colorless Luster Vitreous Diaphaneity Transparent to translucent Cleavage Poor cleavage, brittle with conchoidal fracture Does olivine have a streak? Diagnostic Features: Distinguished usually by its glassy luster, conchoidal fracture, green color, and granular nature.Olivine
on April 16, 2022
How does a biochemical sedimentary rock form?
GeologyBiochemical sedimentary rocks are formed from shells and bodies of underwater organisms. The living organisms extract chemical components from the water and use them to build shells and other body parts. The components include aragonite, a mineral similar to and commonly replaced by calcite, and silica. How are biochemical sedimentary rocks made quizlet? How do
on April 16, 2022
What do you mean by exogenic and endogenic forces?
GeologyThe forces which derive their strength from the earth’s exterior or originate within the earth’s atmosphere are called exogenic forces or external forces. While the endogenic forces, also called internal forces, are used to describe pressure that originates inside the earth. What do you mean by exogenic and endogenic forces Class 7? Exogenic forces are
on April 16, 2022
What kind of eruption produces pahoehoe and AA?
GeologyOnce the volcanic vent rises above sea-level, phreatomagmatic eruptions become rare and effusive eruptions resume (Figure 4C). Pahoehoe and aa are the important lava types, and in most cases a lava shield is created from numerous low-relief lava flows. What type of volcano produces pahoehoe? Pahoehoe is a smooth, ropy lava, common on the Hawaiian
on April 16, 2022
What is an igneous rock with large crystals?
GeologyAn igneous rock with large crystals probably indicates that the rock formed deep within the Earth, since it is typically warmer deep inside the Earth than near the surface. These are called intrusive rocks, and they have a phaneritic texture (from the Greek “phanerous” meaning visible). What is an igneous rock with large crystals called?
on April 16, 2022
Where is scoria found in the world?
GeologyScoria is common in areas of recent volcanism, such as the Canary Islands and the Italian volcanoes. It is relatively low density due to its vesicles, bu it is not as light as pumice. Also differs from pumice in that it has larger vesicles with thicker walls. Where does scoria come from? Scoria forms when
on April 16, 2022
What is the protolith of marble?
GeologyLimestoneLimestone is a protolith for marble. What is the parent rock for a marble? Marble Type Metamorphic Rock Metamorphic Type Regional or Contact Metamorphic Grade Variable Parent Rock Limestone or Dolostone Metamorphic Environment Variable grade regional or contact metamorphism along a convergent plate boundary What is rock protolith? The original rock that has undergone metamorphism
on April 16, 2022
What was the cause of the San Francisco earthquake 1906?
GeologyThe quake was caused by a slip of the San Andreas Fault over a segment about 275 miles long, and shock waves could be felt from southern Oregon down to Los Angeles. San Francisco’s brick buildings and wooden Victorian structures were especially devastated. What fault caused the San Francisco earthquake of 1906? the San Andreas