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Geology of East Hollywood, Los Angeles, California
Geology of East Hollywood, Los Angeles, California & Hydrogeology This post summarizes the basic geology of the East Hollywood region of Los Angeles California. 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…
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Agate Types & Geological Properties of the Agate Crystal
Agate Types & Geological Properties of the Agate Crystal The agate crystal is a microcrystalline-quartz mineraloid that has a lustrous display of multi-color banding and results from long-term accumulations of siliceous groundwater deposits in rock cavities. Much like other mineraloids, all agate types form over thousands of years inside the existing voids of other igneous,…
![Fire Opal Gemstone – Geology, Mineralogy & Information](https://www.geoforward.com/wp-content/uploads/Cloud-Photos-by-Azad-Kaligi-co-Geo-Foward-768x440.jpeg)
Fire Opal Gemstone – Geology, Mineralogy & Information
Fire Opal Gemstone – Geology & Mineralogy Information Fire Opal is an amorphous mineraloid comprising an accumulation of tiny hydrated silica spheres that produce a dominant reddish-orange spectrum upon light reflection. Although it is commonly misclassified as a “mineral,” fire opal is actually not a mineral because it does not have its own crystalline structure….
![Geology of Northern Salt Lake City, Utah](https://www.geoforward.com/wp-content/uploads/Geology-of-Northern-Salt-Lake-City-Utah-768x707.jpg)
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…
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What is Common Opal?
What is Common Opal? Common Opal is a specific type of opal that usually exists in one color, and has no play-of-color when flashed with light. Unlike precious opal, common opal appears to be “glassy” with transparent and translucent properties. A common blue opal or fire opal gemstone will predominantly reflect one pigment of color from any…
![Geologic Time Scale](https://www.geoforward.com/wp-content/uploads/Cloud-Photos-by-Azad-Kaligi-co-Geo-Foward-768x440.jpeg)
Geologic Time Scale
Geologic Time Scale The Geologic Time Scale is an international system used by geologists to classify and identify major geologic events and formations. The geologic timescale essentially categories the earth’s entire geologic (and biologic) history, within a series of defined eons, eras, periods, epochs, and ages. Updates & Maintenance The geologic time scale is continuously…