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Hollywood, CA Quadrangle 2018 USGS 7.5 Minute Topo Map
Hollywood, CA Quadrangle 2018 USGS 7.5 Minute Topo Map To download the Hollywood, CA Quadrangle 2018 USGS 7.5 Minute Topo Map, please use the link below. PDF Download – Hollywood, CA Quadrangle 2018 USGS 7.5 Minute Topo Map

Methane on Mars
Methane on Mars Geologists understand that methane on Mars could relate to possible signs of past life, future sustainability, and similar geological processes to Earth. And sources of methane gas in the Mars atmosphere are presumably from biogenic and petrogenic processes. For example, microbial and thermal decomposition of underground organic matter, or tectonic and volcanic…

Geology for Rock Climbers
Geology for Rock Climbers Geology for rock climbers tends to be a science of newfound interest. A field of study, that apparently, wasn’t the most popular… Although to be honest, most people do remember Earth Science class in high school for its tranquilizing effect. But fast forward 10- to 20- years, and suddenly the booming…

Blue Opal Gemstone, Science & More
Blue Opal Gemstone The blue opal gemstone, like all other types of opal, is not a mineral. Instead, it is an amorphous mineraloid, which means it is a substance that comprises a specific arrangement of smaller microcrystalline silicas, which result in a blue spectrum of light reflection. Blue opal has an appealing luster and appearance,…

Geology of Northern Salt Lake City, Utah
Geology of Northern Salt Lake City, Utah This post summarizes the basic geology of the northern region of Salt Lake City, Utah. Some geological and hydrogeological data may be incomplete or pending review. Nonetheless, students, geologists, and earth scientists are welcome to openly use, critique, and contribute information. To do so, please refer to the…

