Jul 1, 2010 | 2010-2011 Projects
This research project will use a multidisciplinary approach to investigate the early Holocene eruption and sector collapse of Volcan Barú which may have produced up to 100km3 of ejected material – possibly one of the largest Holocene collapses in the Western Hemisphere. However, there may be multiple collapses extending back into the Pleistocene, confounding volume estimates. Our work will utilize geologic mapping, volcanic stratigraphy, geochemical analyses and radiometric dating to explore the eruptive history of this volcano.
Jun 29, 2010 | 2010-2011 Projects
We will be working on reconstructing past environmental and geomorphic conditions in Glacier National Park through collection and analysis of lake sediment cores. There is broad interest in the future of our National Park system, particularly Glacier National Park, which is sensitive to climate change through glacial retreat and ecosystem adjustments. This research project is aimed at understanding environmental and climate change in a near-pristine alpine basin in North America, and we will collect data that is very relevant to the debate about climate change in the northern Rockies since the Last Glacial Maximum.
Jun 13, 2010 | 2010-2011 Projects
Sediment dynamics in the lower Connecticut River.
Apr 1, 2010 | 2009-2010 Projects, Symposium |
In Houston, Texas, 2010. Sponsored by ExxonMobil.
Apr 1, 2010 | 2009-2010 Projects, Volumes
In Houston, Texas, 2010. Sponsored by ExxonMobil.
Jul 18, 2009 | 2009-2010 Projects
Mongolia occupies a key position for unraveling the complex geologic history of central Asia, which formed through the accretion of “exotic” crustal fragments in the late Paleozoic-early Mesozoic. Students involved in this project will contribute new geologic data about the Gobi-Altai terrane in southern Mongolia – its sedimentary history, evolution of its invertebrate communities, and paleogeographic setting.
Jul 15, 2009 | 2009-2010 Projects
Modern climate is changing rapidly in the Arctic. To better understand future climate, we need to understand how the climate has changed in the past. Participants in this project will do field work on the Arctic archipelago of Svalbard to collect samples and data from a glacier-river-lake system. We seek to better understand how modern climate influences glacier melt, sediment transport, and lacustrine sedimentation in order to better calibrate the late Holocene climate record archived in the layered sediments. In the field we will collect samples and download data loggers on the Linne’ Glacier, in the meltwater stream and in the lake. In the lab we will process and analyze the samples and data we collect.
Jul 14, 2009 | 2009-2010 Projects
The Keck Colorado Project will work with a large interdisciplinary study directed by Suzanne Anderson, Institute for Arctic and Alpine Studies, University of Colorado. The Keck Project focus is measurement and sampling of geologic deposits and processes in the critical zone, “the heterogeneous carapace of rock in various stages of decay, overlying soil, and the ecosystems they support… fundamental characteristics of the critical zone, such as its thickness, the character of the weathered rock and soil layers and the biological activity within them, together control the passage of water, the chemical processes operating, the material strength, and the function of subsurface ecosystems.”
Jul 12, 2009 | 2009-2010 Projects
The Driftless Area of southwest Wisconsin is home to thousands of springs that help to support the region’s world-class trout streams and sustain critical habitat for endangered and threatened species. Springs provide evidence of heterogeneity of permeability in the subsurface. As such, spring occurrence and geochemistry can provide important insights into local influences on groundwater flow and aquifer contamination susceptibility. Students on this project will work together to better understand geological controls on the distribution of springs in the region and the contributions of springs to stream ecology.
Jul 9, 2009 | 2009-2010 Projects
Volcanoes of the Aleutian arc have erupted intermittently during the last three million years, and biostratigraphy indicates that the marine sediments have accumulated in a subduction zone setting since the Miocene, however, previous studies of Aleutian volcanoes have focused primarily on the main stratocones and satellite cinder cones that have erupted in the Holocene. On Unalaska Island, Makushin Volcano and its satellite vents have erupted on older lavas and pyroclastic deposits, yet these Pleistocene lavas, which cover approximately 600 km2, are virtually unstudied. We propose to map and sample the Pleistocene pre-Makushin lavas, which will facilitate subsequent lab-based investigations into the timing and development of the pre-Makushin magmatic system.
