Tag: geochemistry

GSA, Press Release

Previously Deployed Military Personnel Show Retained Dust in Lungs

itssedimentary

via Previously Deployed Military Personnel Show Retained Dust in Lungs Denver, Colo., USA: Military personnel who were deployed in Afghanistan and Iraq may have been exposed to significant amounts of dust and other respiratory hazards, leading to persistent respiratory symptoms and diseases like asthma and bronchiolitis. Researchers from the U.S. Geological Survey (USGS) and National… Continue reading Previously Deployed Military Personnel Show Retained Dust in Lungs

isotopes, paleoclimate

Oxygen Isotopes and Paleoclimate

itssedimentary

Direct measurements for global temperature only date back to about 1850, so how do we figure out what past climates were like? Once we move beyond the limits of direct measurements, we need to use proxies—preserved physical characteristics of past environments. Oxygen isotopes are the most commonly used paleoproxy to reconstruct long records of past… Continue reading Oxygen Isotopes and Paleoclimate