X-ray fluorescence

Estimation of chemical element concentration by measuring the energy level of secondary X-rays generated when the sample is bombarded with high-energy X-rays or gamma rays.
This category is also used for XRF.

2 results listed by similarity [list alphabetically]
CSV and XLS tables of x-ray fluorescence data from 12 cores collected by the U.S. Geological Survey offshore of Puerto Rico and the U.S. Virgin Islands in 2008

In 2008, as a collaborative effort between Woods Hole Oceanographic Institution and the U.S. Geological Survey, 20 giant gravity cores were collected from areas surrounding Puerto Rico and the U.S. Virgin Islands. The regions sampled have had many large earthquake and landslide events, some of which are believed to have triggered tsunamis. The objective of this coring cruise, carried out aboard the National Oceanic and Atmospheric Administration research vessel Seward Johnson, was to determine the age of ...

Point Shapefiles of Locations and Results of Ocean Bottom Ferromanganese Crusts Chemical Analyses Published in Appendix C of USGS Open-File Report 89-020

The chemical compositions and natural distribution of ferromanganese crusts have been a topic of interest to scientific research, as well as to industrial and military applications. These crusts form largely on hard substrates in marine environments largely free from heavy amounts of sedimentation. They are distinct from ferromanganese nodules that form in abyssal geographic locations, by their chemical composition, mineralogy, and source of metals. A database containing analytical data pertaining to ...