Dept. of Geology
Browse Collections of Items
(2017-04-24)The differential motion, lateral velocity gradient, and topography of the Earth’s inner core make the temporal change of the core phases’ arrival times observable in waveform doublets, a pair of events happened at the same ...
Petrogenesis of natrocarbonatite at Ol Doinyo Lengai, East Africa—evidence from Fe and U isotope variations (2017-04-25)Ol Doinyo Lengai (ODL), Tanzania, is the only active carbonatite volcano on earth. Cyclical activity that consists of quiescent natrocarbonatite lava flow, explosive silicate eruption and dormancy has been observed throughout ...
(2017-04-26)Despite advancements in volcanic modeling, the time-dependent evolution of volcanoes is still poorly understood. Of particular need are methods for combining extensive monitoring data sets with dynamic models. Sequential ...
Regional Fracturing of the Galena-Platteville Aquifer in Boone and Winnebago Counties, Illinois: Geometry, Connectivity and Tectonic Significance (2000-01)
(2016-07-11)Fold-thrust belts are common manifestations of crustal shortening at convergent and collisional plate boundaries. They contain a variety of geologic structures that develop over a wide range of length scales. This ...