Now showing items 1-3 of 3
New insights into the carbon isotope composition of speleothem calcite : an assessment from surface to subsurface
The purpose of this study was to provide new insights into the interpretation of speleothem (cave calcite deposit) δ13C values. We studied two caves in central Texas, which have been actively monitored for over 12 years. ...
Insights into circum-Arctic sea ice variability from molecular geochemistry : the IP₂₅ index
Geological records of past sea ice, such as those contained in Arctic marine sediments, offer an opportunity to strengthen our understanding of long-term sea ice variability, provided unambiguous paleo-sea ice proxies can ...
A 1,500-year record of late Holocene temperature variability and recent warming from Laguna Chingaza, Colombia
Rapid tropical glacier retreat over the last 50 years has been well documented, and has received significant media attention. Many studies suggest these changes are due to rising global surface air temperatures, however ...