Announcements

Bureau scientists Nels Iverson and Bill McIntosh co-authored a recent paper published in Quaternary Science Reviews that examines the eruptive history of Nabro volcano, located on the border of Eritrea and Ethiopia. Numerical argon dating (⁴⁰Ar/³⁹Ar) completed at the New Mexico Geochronology Research Laboratory indicates that Nabro has produced pyroclastic eruptions since at least the Middle Pleistocene about 380 thousand years ago.

A new Geosphere paper by Peter Lipman of the USGS and Matthew Zimmerer of the NM Bureau of Geology is now available online. The article discusses an enormous dike swarm that originates from the mid-Tertiary Platoro Caldera in southern CO. The dikes propagate southward from the caldera and are exposed up to 125 kilometers away in the San Juan basin of northern NM. The study has implications for regional magmatism and tectonics, as well as possible hazards at younger caldera systems.

New satellite office location:

1015 Tijeras Avenue NW, Suite 200
Albuquerque, NM, 87102