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Full-Text Articles in Physical Sciences and Mathematics

45th Biennial Convention Of Sigma Gamma Epsilon Virtual Meeting Hosted By Eastern Illinois University April 10, 2021, James Walters, Paula Even Oct 2021

45th Biennial Convention Of Sigma Gamma Epsilon Virtual Meeting Hosted By Eastern Illinois University April 10, 2021, James Walters, Paula Even

The Compass: Earth Science Journal of Sigma Gamma Epsilon

The 45th Biennial Convention of Sigma Gamma Epsilon, the national honor society in the Earth Sciences, was originally scheduled for April 3 – 5, 2020 at The University of Tennessee at Martin, but it was postponed until April 10, 2021 due to the Coronavirus pandemic. Since COVID-19 was still a serious issue this spring, the SGE National Council decided to conduct this meeting in a virtual format using the Zoom platform. The meeting was hosted by SGE Gamma Chi Chapter in the Department of Geology/Geography at Eastern Illinois University and presided over by Dr. Diane Burns, Chair of the Department …


Geology In And Around Charleston, Il: Rocky Branch Conservation Area & Charleston Quarry Field Trip, Diane M. Burns Oct 2021

Geology In And Around Charleston, Il: Rocky Branch Conservation Area & Charleston Quarry Field Trip, Diane M. Burns

The Compass: Earth Science Journal of Sigma Gamma Epsilon

A field trip guide for Rocky Branch Conservation area and Charleston Quarry, in and around Charleston, Illinois. This field trip occurred during the 44th Biennial Convention at Charleston, IL on September 23rd, 2017.


44th Biennial Convention Of Sigma Gamma Epsilon Eastern Illinois University: Charleston, Illinois September 22 – 24, 2017, James Walters, Paula Even Oct 2021

44th Biennial Convention Of Sigma Gamma Epsilon Eastern Illinois University: Charleston, Illinois September 22 – 24, 2017, James Walters, Paula Even

The Compass: Earth Science Journal of Sigma Gamma Epsilon

The 44th Biennial Convention of Sigma Gamma Epsilon, the national honor society in the Earth Sciences, was held September 22 through 24, 2017 on the campus of Eastern Illinois University (EIU). The meeting was hosted by Gamma Chi Chapter of SGE in the Department of Geology/Geography. As part of the meeting, a local field trip to investigate the area’s geology was led by Dr. Diane Burns, Chair of the Geology/Geography Department at EIU. This report summarizes the Convention and includes information on the deliberations and actions of the attendees.


Resolving A One-Year Ecesis Interval For Alaska Paper Birch: Dating A Rockfall Event, Wishbone Hill, Southcentral Alaska, Riley E. Whitney, Alexander K. Stewart, Trent D. Hubbard, Anabella S. Kowalski, Oscar A. Wilkerson May 2021

Resolving A One-Year Ecesis Interval For Alaska Paper Birch: Dating A Rockfall Event, Wishbone Hill, Southcentral Alaska, Riley E. Whitney, Alexander K. Stewart, Trent D. Hubbard, Anabella S. Kowalski, Oscar A. Wilkerson

The Compass: Earth Science Journal of Sigma Gamma Epsilon

Numerous large boulders at the base of Wishbone Hill, northeast of Anchorage, Alaska, suggest a historic rockfall event and potential for future surface instability, putting lives and property at risk. The source of the rockfall-boulders is an exposed syncline with a cliff face composed of conglomerate. The age of trees growing atop boulders provides a minimum exposure-age of those boulders and, thus, the rockfall event. To determine when the rockfall occurred, we dated trees growing atop the boulders using tree-ring samples collected from 30 Alaska paper birch trees. After mounting and polishing, each tree-ring sample was dot-counted, and tree-ring widths …


Characterization Of Surface Geology And Hydrogeology In The Upper Ulua River Basin, Honduras, C. Renee Sparks, Issac J. Jacques, Cheryl L. Verbree, Thomas J. Timmermans, Stuart Dykstra May 2021

Characterization Of Surface Geology And Hydrogeology In The Upper Ulua River Basin, Honduras, C. Renee Sparks, Issac J. Jacques, Cheryl L. Verbree, Thomas J. Timmermans, Stuart Dykstra

The Compass: Earth Science Journal of Sigma Gamma Epsilon

This research includes a hydrogeologic assessment in and around La Union, Honduras to determine the contribution of groundwater to the surface water system and understand the geological control of groundwater storage and movement. Field methods were employed and focused on spring characterization, geochemical signatures, and structural data. Field data was gathered, and locations determined using cellular-integrated GPS signal and the Fulcrum mapping software mobile application. During the summer of 2017, data on 111 geologic points and 34 water points were collected to understand the hydrogeology of the region. Streams and springs were monitored for pH, flow characteristics and conductance as …


Using Gis To Create Hazard Maps And Assess Evacuation Routes Around “The Gate To Hell”; Masaya Volcano, Nicaragua, Rebecca Hedges, Stevie Mcdermaid, Jason Kaiser, David Maxwell, Kathy Matthews May 2021

Using Gis To Create Hazard Maps And Assess Evacuation Routes Around “The Gate To Hell”; Masaya Volcano, Nicaragua, Rebecca Hedges, Stevie Mcdermaid, Jason Kaiser, David Maxwell, Kathy Matthews

The Compass: Earth Science Journal of Sigma Gamma Epsilon

Volcán Masaya in Nicaragua is made of a series of calderas and craters that lies 7 km from the city of Masaya with a population of over 100,000. Masaya is part of the Central American Volcanic Arc (CAVA) which contains hundreds of volcanoes. While many of the volcanoes of the arc produce small, quiescent eruptions, some are capable of large explosive events. The recent cycle of volcanism at Masaya began 7000 years ago. Initial eruptions were primarily lava, small ash flows, ashfalls, and degassing events which eventually gave way to climactic Vulcanian eruptions. The hazards presented from this system affect …


Late Cretaceous Dinosaur Tracks From The Iron Springs Formation, Iron County, Utah, Jennifer K. Crowell, Grant T. Shimer May 2021

Late Cretaceous Dinosaur Tracks From The Iron Springs Formation, Iron County, Utah, Jennifer K. Crowell, Grant T. Shimer

The Compass: Earth Science Journal of Sigma Gamma Epsilon

Located in Iron County, Utah, the Parowan Gap dinosaur track site contains over one hundred natural casts of non-avian dinosaur tracks preserved in sandstones and siltstones of the Late Cretaceous (≈83 Ma) Iron Springs Formation. For this study, the authors returned to the area to survey for and describe previously unidentified tracks. Many tracks from this new study occur as in situ casts found on the basal surfaces of sandstones deposited by braided and meandering rivers on the coastal plain of the Western Interior Seaway, with some specimens from fallen talus blocks. Over the course of two years, the research …