A5100608393- Geology and Paleoclimatology Research
- Cryospheric studies and observations
- Landslides and related hazards
- Climate change and permafrost
- Botany, Ecology, and Taxonomy Studies
- Geochemistry and Geologic Mapping
- Pleistocene-Era Hominins and Archaeology
- Geological Studies and Exploration
- Geological and Geophysical Studies Worldwide
- Karst Systems and Hydrogeology
- Methane Hydrates and Related Phenomena
- Geotourism and Geoheritage Conservation
- Polar Research and Ecology
- Indigenous Studies and Ecology
- Geological and Geophysical Studies
- Medieval Architecture and Archaeology
- Archaeological and Geological Studies
- Geological Modeling and Analysis
- Geological formations and processes
- Linguistic Variation and Morphology
- Plant Ecology and Soil Science
- Maritime and Coastal Archaeology
- Hydrocarbon exploration and reservoir analysis
- Educational Practices and Policies
San Jose State University
2017-2018
University of Coimbra
2010-2014
Fabric and grain-size analysis of eight deposits present in the Upper Sil River Basin palaeoglacial system northwest Spain were used to interpret till types reconstruct glacial paleoprocess history this region. They are represented by lodgement, deformation, melt-out tills. The first, representative advance stages, cluster fabrics generally composed poorly sorted finer sediments. Melt-out deformation tills, stages stability followed fast recession, transitional girdle coarser In any case,...
The combined usage of till-fabric and grain-size analysis in the sedimentological interpretation glacial diamictons allows reconstruction processes responsible for genesis certain moraines. Till-fabric data from several late Quaternary moraines present three valleys Serra da Peneda Mountains northwestern Portugal revealed presence two types till deposited during stages. During first stage, ice advanced into lower Alto Vez Branda Junqueira lodgment tills moraine 1 (unit 1) moraine; therefore,...
Abstract Observations of geomorphic and sedimentary processes occurring in modern glaciers allows interpretations the genesis older glacial deposits landforms has led geomorphologists geologists to place a greater emphasis on studies sedimentology. This research investigates Little Ice Age (LIA) moraines present Portage Glacier Valley, south-central Alaska using till fabric grain size analysis. The present-day moraine morphology sedimentology Valley reveals presence two types moraines....
Till macrofabric and grain-size analysis of glacial diamictons sequences present in several valleys the Serra do Gerês Mountains Northwestern Iberian Peninsula were used to interpret till types reconstruct paleoprocess history this mountainous region. Subglacial lodgement, supraglacial melt-out, deformation tills are dominant range. lodgement tills, representative periods advance followed by stability valleys, cluster fabrics generally poorly sorted fine sediments. Supraglacial melt-out with...
Abstract Holocene glacier fluctuations in College Fjord south-central Alaska provide an integrated proxy record of climatic and related environmental changes through this critical geologic epoch. During the early around 10,000 yr BP, ice was receding from lower Port Wells but still present Fjord. With beginning Climatic Optimum, recession increased front reached Golden Moraine site 1 by 7680 cal starting its long to middle retreat head tidewater. An ice-free fjord existed between BP about...