Physical Sciences and Mathematics Commons^™

Dislocation Creep Of Dry Quartz, Rüdiger Kilian, Renee Heilbronner, Caleb Holyoke, Andreas Kronenberg, Holger Stünitz

Caleb Holyoke

No abstract provided.

Topographic Control Of Asynchronous Glacial Advances: A Case Study From Annapurna, Nepal, B. Pratt-Sitaula, D. W. Burbank, A. M. Heimsath, Neil Humphrey, M. Oskin, J. Putkonen

Neil Humphrey

Differences in the timing of glacial advances, which are commonly attributed to climatic changes, can be due to variations in valley topography. Cosmogenic Be-10 dates from 24 glacial moraine boulders in 5 valleys define two age populations, late-glacial and early Holocene. Moraine ages correlate with paleoglacier valley hypsometries. Moraines in valleys with lower maximum altitudes date to the late-glacial, whereas those in valleys with higher maximum altitudes are early Holocene. Two valleys with similar equilibrium-line altitudes (ELAs), but contrasting ages, are aspect, such that spatial differences in climate can be excluded. A glacial mass-balance cellular automata model of these two …

Stable Isotope Studies Of Paleoenvironment And Paleoclimate From Afar, Ethiopia, Zelalem K. Bedaso

Zelalem Bedaso

ABSTRACT The sedimentary deposits of the Hadar Formation at Dikika and the Mount Galili Formation at Galili preserve a wealth of paleoenvironmental and paleoclimatic records spanning the last 5.29 Ma. Stable carbon and oxygen isotopic compositions of herbivore tooth enamel were analyzed for more than 600 specimens of 15 different taxa from 10 stratigraphic intervals. The application of carbon and oxygen isotopes here aims principally at reconstructing shifts in the relative abundance of C4 grasses, and its implications for climate indicators including temperature, aridity, and seasonality. The full range of δ13Cenamel values throughout the Plio-Pleistocene signifies a wide range of …

Communicating The Science Of Igcp 591 To The Public, Lewandowski J. Katherine

Katherine J. Lewandowski

Selling the broader impacts of science to funding agencies has become a necessity in a time when competition for grant money is high. While involving students in research is still important for maintaining a pipeline of trained scientists, the bar has been raised and it is increasingly incumbent on us to communicate to the public what is so important about our work. To be competitive in the search for funds, there must be a plan for the science funded to be disseminated to the public. The education and outreach plan for IGCP 591 attempts to appeal to this broader audience …

Three-Dimensional Geologic Model Of The Pecatonica Gas Storage Field, Winnebago County, Illinois, Nicole Kron, David Malone, Eric Peterson

Eric Wade Peterson

Rock Strength Along A Fluvial Transect Of The Colorado Plateau - Quantifying A Fundamental Control On Geomorphology, Natalie Bursztyn, Joel Pederson

Natalie Bursztyn

Bedrock strength is a key parameter that influences slope stability, landscape erosion, and fluvial incision. Yet, it is often ignored or indirectly constrained in studies of landscape evolution, as with the K erodibility parameter in stream-power models. Empirical datasets of rock strength suited to address geomorphic questions are rare, in part because of the difficulty in measuring those rocks at Earth's surface that are heterolithic, weak, or poorly exposed. Here we present a large dataset of measured bedrock strength organized by rock units exposed along the length of the trunk Green–Colorado River through the iconic Colorado Plateau of the western …

Student Experience 14: "So What?", Ana K. Houseal

Ana K Houseal

This activity is designed to encourage students to question their own learning and the implications that learning has to them as well as to the broader community. For example: How will this knowledge, these skills and these concepts influence individual lives and the life of the community? What impact does this have on the environment? The activity also helps teachers to reflect about the relevance of lessons within their own curriculum and appropriateness of their teaching strategies. And it is a way for students to take the concepts and apply them in new ways making them more relevant.

Student Experience 03: Photo Points, Ana K. Houseal

Ana K Houseal

Students learn about using photogrammy (making multiple identical images of a location taken with a camera whose relative position is known to a certain degree of accuracy) to monitor change over time. This set of activities within the following lesson will help students learn about the process of collecting identical images and its importance, and practice collecting images from set locations, first in their own environments and then in the field. With this background, students can participate in photo point data collection during their expedition on Geology Day, and have a better understanding of the importance of this data collection. …

Student Experience 02: Powers Of Ten Background, Ana K. Houseal

Ana K Houseal

Powers of Ten (P10) refers to scale. This scale can be an excellent tool to use when framing observations. In other words, P10 is a way of putting objects being observed into context using size as the focal point. Once students understand the terminology, it can be used to both communicate and focus attention.

Student Experience 11b: Mammoth Hot Springs Microbe Wheel, Ana K. Houseal

Ana K Houseal

Mammoth Hot Springs Microbe Wheels.

Student Experience 12: Using The Ir Thermometer To Develop Answerable Questions, Ana K. Houseal

Ana K Houseal

Students learn about and use IR thermometers in the classroom or some place on the school grounds to develop answerable questions. After developing the questions, they perform brief investigations to answer their questions and share their findings with their classmates.

Student Experience 04: Mammoth Hot Springs Photo Points, Ana K. Houseal

Ana K Houseal

Photos taken over time from set photo points can help to increase understanding of terrace formation and concretely map the movement of microbial communities. Now, and in the future, researchers can use these high quality photos to help answer questions about things such as microbial mat migration, possible shifts in water flow, and formation of terracing through travertine precipitation/deposition. In the meantime, visitors and students will have access to these photos and can compare visible changes themselves.

Background 4: Student Experience Lesson - Systems Study, Ana K. Houseal

Ana K Houseal

This lesson helps students observe, integrate and articulate their knowledge of a familiar earth system by considering how the different parts of the system interact to keep it in balance. Students first explore the word “system” and then apply the concept of systems to a familiar natural environment. Students will create a collage that is a representation of this system through discussion, further inquiry, and investigation.

Student Experience 08: Starrs Temperature Tools, Ana K. Houseal

Ana K Houseal

Students get a chance to use various temperature tools to explore the Celcius temperature scale. They also will explore the differences in the temperature tools and determine and share with the whole group which tools are appropriate for measuring temperature in different situations.

Background 3: Microbiological Communities In Mammoth Hot Springs, Ana K. Houseal

Ana K Houseal

Microbial Communities in Mammoth Hot Springs Background

Student Experience 07: What's In The Bag?, Ana K. Houseal

Ana K Houseal

This is a "black box" activity. Students use their sense of hearing, touch, and smell to figure out what objects are contained in their paper bag.

Background 6: Student Experience Lesson - Facies Modeling Using Video, Ana K. Houseal

Ana K Houseal

Background for Student Experience Lesson: Facies Modeling Using Video

Student Experience 10: Grid Protocols, Ana K. Houseal

Ana K Houseal

Students will use specific protocols and equipment to systematically collect comprehensive data from a single location at a single point in time.

Student Experience 13: Student Driven Research, Ana K. Houseal

Ana K Houseal

In groups of 4-5, students develop answerable quesitons about MHS, and design their investigations and data collection procedures. Next, they carry out their investigations in the field during the expedition, perform simple data analysis, and present their findings and challenges to authentic audiences both at E:Y! and back in their own communities.

Background 1: Mammoth Hot Springs Background, Ana K. Houseal

Ana K Houseal

Mammoth Hot Springs geologic background

Student Experience 06: Prolonged Observations, Ana K. Houseal

Ana K Houseal

Students participate in an exercise conducting a prolonged observation of a known object. Students will compare how their observations change as the observation time passes. This activity meant to teach the importance of careful, sustained observation as a "scientific tool".

Student Experience 09: Social Applications For Power Of Ten (P10), Ana K. Houseal

Ana K Houseal

In this lesson, students are asked to observe and record their observations of an object at a specific distance, either moving away from or toward at specific powers of ten intervals. Discussions of their observations may help students to see how detail changes with perspective, and how different jobs, including science, might require focus on different powers of ten.

Student Experience 05: The Candle, Ana K. Houseal

Ana K Houseal

Sometimes objects turn out to be something other than what we think we are observing. Learning to make careful observations provide the basis for students to engage in further observations of objects that are both familiar and unfamiliar. In this lesson, students make observations while the teacher manipulates an object that appears to be a candle. This leads to the exploration of the differences between observations and inferences.

Background 5: Student Experience Lesson - Labeling Facies, Ana K. Houseal

Ana K Houseal

Background for Student Experience Lesson: Labeling Facies

Fluorescent Chrysotile From Sterling Hill, New Jersey, James A. Van Fleet, Earl R. Verbeek

James A. Van Fleet

Minerals of the serpentine group, notably chrysotile and to a lesser extent lizardite, are widely present at both Franklin and Sterling Hill. They are late-stage hydrous magnesium silicate minerals that formed by hydrothermal alteration of earlier species, among them willemite and tephroite, and are also common components of hydrothermal veins cutting the ore bodies and the enclosing marble (Dunn, 1995). Although long recognized in the area (Fowler, 1825), local serpentine was not documented as a fluorescent mineral until 2004, when a brief description of a fluorescent serpentine from Franklin appeared in The Picking Table (Cianciulli, 2004). In the present paper, …

Hardystonite From The Desert View Mine, California, James A. Van Fleet, Earl R. Verbeek Phd

James A. Van Fleet

The fluorescent mineral hardystonite is confirmed in a specimen from the Desert View Mine, California. Hardystonite had been known only from Franklin, New Jersey for over 100 years.

Temporal And Spatial Evolution Of Wave-Induced Ripple Geometry: Regular Versus Irregular Ripples, Timothy Nelson, George Voulgaris

George Voulgaris

Concurrent observations of inner shelf near bed hydrodynamics and acoustic imagery of the seabed are used to relate wave-induced ripple geometry (wavelength and orientation) to near bed directional wave velocities. The observations were collected on the continental shelf of the South Atlantic Bight at water depths of 9.5 and 30 m off the coasts of South Carolina (median size 177 mm) and Georgia (388 mm), respectively. 2-D spectral analysis techniques are performed on the imagery to automate detection of ripple wavelength, orientation, and irregularity. Our analysis shows that ripple irregularity is a time-dependent process dependent on magnitude, direction, and duration …

Rheology Of Magnesite, Caleb Holyoke, Andreas Kronenberg, Julie Newman, Christopher Ulrich

Caleb Holyoke

No abstract provided.

Microstructural Evolution During Strain Localization In Dolomite Aggregates, Caleb Holyoke, Julie Newman, Andreas Kronenberg

Caleb Holyoke

No abstract provided.

Granitic Rocks From 3 Deep Drill-Holes, Illinois, Charles J. Vitaliano, George R. Mccormick, Peter Dahl, Yoram Eckstein

Peter Dahl

A medium- and coarse-grained granite has been encountered in the lower 914 m of deep drill-holes in northwestern Illinois. The mineralogy and chemistry of both types of granite suggest they are anorogenic A-type granites after the definition of Loiselle and Wones (1979). The major oxide composition for both types is nearly identical. Trace element data (Rb, Y, Th) indicate the medium-grained granite crystallized from a more evolved melt than did the coarse-grained granite. Trace element data (Y, Th, Ba, Sr) for the coarsegrained granite show it to be slightly zoned from the bottom upward to the contact with the medium-grained …