A. Sergeev (2007), Insight into the geology of the East Antarctic hinterland: A study of sediment inclusions from ice cores of the Lake Vostok borehole, in Antarctica: A Keystone in a Changing World--Online Proceedings for the 10th International Symposium on Antarctic ...
2,3,4,5,6. While fire is a fundamental ecological process on which many ecosystems are dependent for vegetation composition, structure, and function, extreme wildfires can devastate human and ecosystem health7. Wildfire smoke is a complex, dynamic mixture of gases and particulate matter...
The samples were ablated continuously for 40 ∼ 60 s with a laser spot of 44 ∼ 90 μm, 4 ∼ 10 Hz, ∼ 5 J/cm2, while the mass fractionation correction was performed by MASS-1 (USGS) and Sph-HYLM (sphalerite) Pb isotope standards. Analytical results for the standard Sph-H...
For more information see this USGS description GEOLOGY! Part I: Rocks & Time The Rock Cycle The surface of the earth is a dynamic system and this applies to rocks as well! The time scale is on a longer extent than what we can see in the motion of water, for example. It's harder ...
Geologists search for fuels and minerals, study natural hazards, and work to protect Earth's environment.Earth Scientists Map the Surface Mapping lava flows: Charlie Bacon, a USGS volcanologist, draws the boundaries of prehistoric lava flows from Mount Veniaminof, Alaska, onto a map. This map ...
(2019). The final sensor characteristics will be determined during the mission formulation phase, but the Decadal Survey provides guidance for a VSWIR instrument with 30–45 m pixel resolution, ≤16 day global revisit, SNR > 400 in the VNIR, SNR > 250 in the SWIR, and 10 nm sampling in...
Bill Eckley's book is a must-read for everyone interested in the history of Golden, the Colorado School of Mines, the railroad hub to the mining camps, the home of Coors Brewery, and home to the "World's Foremost School of Mineral Technology." This book was over 20 years in concept,...
A gemstone or gem is a piece of mineral crystal, which, in cut and polished form, is used to make jewelry or other adornments. However, certain rocks (such as lapis lazuli) or organic materials that are not minerals (such as amber or jet), are also used for jewelry, and are ...
This is a map of the Mekong River watershed. I, Pfly, made it, based on USGS data. Table of Contents Course Drainage basin Upper Mekong Basin Lower Mekong Basin Geology The Mekong is a trans-boundary river in Southeast Asia. It is the world’s 12th-longest river and the 7th-longest ...
However, I loved playing basketball, and to a lesser extent football, and this combination of osteoarthritis and sports that impacts joints conspired to make me a punch card for surgeries: I have had enough that surely I qualify for a TV advertisement for Stryker, one of the world’s larger...