Category: Regional Specifics

What kind of plant is the Glossopteris flora?

Glossopteris was a woody, seed-bearing shrub or tree, some apparently reaching 30 meters tall. They had a softwood interior that resembles conifers of the family Araucariaceae. What was unique about the Glossopteris plant? Glossopteris has unique plant morphology, including unusual leaf venation for a seed fern, unusual ovule and pollen structures and their locations on

Are the San Francisco Peaks an active volcano?

The highest peak in the field is Humphreys Peak, at Flagstaff’s northern perimeter: the peak is Arizona’s highest at 12,633 feet (3,851 m) and is a part of the San Francisco Peaks, an extinct stratovolcano complex. Are the San Francisco Peaks dormant? San Francisco Mountain hasn’t erupted in the last 400k years, and we can

Where do the SJ Earthquakes play?

Where is SJ Earthquakes? The San Jose Earthquakes are an American professional soccer team based in San Jose, California. The Earthquakes compete as a member club of the Western Conference of Major League Soccer (MLS). How can I watch San Jose Earthquakes? NBC Sports Bay Area: Xfinity – channel 40 (SD), 720 (HD) AT&T U-verse

What is an igneous intrusion?

What is igneous rock intrusion? Igneous intrusions form when magma cools and solidifies before it reaches the surface. Three common types of intrusion are sills, dykes, and batholiths (see image below). Where are igneous intrusions found? When magma cools and solidifies in these spaces, Intrusive or plutonic igneous rocks are formed deep beneath the Earth’s

What type of rocks are formed from volcanoes?

Igneous rocks form when magma (molten rock) cools and crystallizes, either at volcanoes on the surface of the Earth or while the melted rock is still inside the crust. What rocks are formed by volcanoes? When lava reaches the surface of the Earth through volcanoes or through great fissures the rocks that are formed from

What do stromatolites tell us about evolution?

What are stromatolites and why are they important in evolution? Cyanobacteria use water, carbon dioxide, and sunlight to create their food, and expel oxygen as a by-product. The real significance of stromatolites is that they are the earliest fossil evidence of life on Earth. What can stromatolites tell us? “Stromatolites tell us when photosynthesizing organisms

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