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.
To download the Hollywood, CA Quadrangle 2018 USGS 7.5 Minute Topo Map, please use the link below.
Geothermal Energy Geothermal energy involves harnessing natural volcanic heat within the Earth’s crust and converting it to electricity aboveground. The “heat beneath our feet” comes from groundwater aquifer systems that flow near molten rock. And the high-temperature groundwater runs through a series of expansion tanks and power turbines to generate electricity. Updated June 3, 2023….
Soil pH Test Strips The pH of soil can be measured using a variety of different devices, or pH testers, which can quickly indicate to a user the pH of their soil. Soil ph test strips determine a numerical value indicating the acidity or alkalinity of soil. The pH scale ranges from 0 to 14,…
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…
Long Beach, California Geology & Hydrogeology This post summarizes the geology of Long Beach, California. However, 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 comments function below. Ultimately, all post…
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…
PCBs Contamination in Killer Whales and Orca Pollution PCBs contamination in killer whales and orca pollution is an increasing concern in the environmental science community. Recent studies indicate hazardous levels of industrial chemicals exist in the bodies of orcas and other marine mammals, worldwide. In fact, toxicologists now hypothesize that rising concentrations of carcinogens like…