Physical Sciences and Mathematics Commons^™

Analyst A: Alternatives In Analysis Of The Utexas1 Surface Wave Dataset, Paul Michaels

Paul Michaels

In February of 2011 an earthquake event caused significant damage and loss of life in Christchurch, New Zealand. Such an event serves as motivation for improved foundation design and characterization of the shallow subsurface. In January of 2013, University of Texas engineers acquired surface wave data which has been made available to the ASCE GeoInstitute Geophysical Engineering Committee for a benchmark project. Participants were invited to process and interpret the common data set. This paper reports the results designated as those of "Analyst A". The active vibroseis and sledgehammer data were combined to produce a composite Rayleigh wave dispersion curve. …

Does The Great Valley Group Contain Jurassic Strata? Reevaluation Of The Age And Early Evolution Of A Classic Forearc Basin, Kathleen D. Surpless, Stephan A. Graham, Jacob A. Covault, Joseph L. Wooden

Kathleen D. Surpless

The presence of Cretaceous detrital zircon in Upper Jurassic strata of the Great Valley Group may require revision of the lower Great Valley Group chronostratigraphy, with significant implications for the Late Jurassic–Cretaceous evolution of the continental margin. Samples (n = 7) collected from 100 km along strike in the purported Tithonian strata of the Great Valley Group contain 20 Cretaceous detrital zircon grains, based on sensitive high-resolution ion microprobe age determinations. These results suggest that Great Valley Group deposition was largely Cretaceous, creating a discrepancy between biostratigraphy based on Buchia zones and chronostratigraphy based on radiometric age dates. These …

Provenance Of The Pythian Cave Conglomerate, Northern California: Implications For Mid-Cretaceous Paleogeography Of The U.S. Cordillera, Kathleen D. Surpless, Gregory Alan Augsburger

Kathleen D. Surpless

Provenance analysis of middle Cretaceous sedimentary rocks can help distinguish between disparate tectonic models of Cretaceous Cordilleran paleogeography by establishing links between sediment and source, as well as between currently separated basins. This study combines new detrital zircon age data and compositional data with existing provenance data for the Pythian Cave conglomerate, an informally-named unit deposited unconformably on the eastern Klamath Mountains, to test possible correlations between the Pythian Cave conglomerate and similar-age deposits in the Hornbrook Formation and the Great Valley Group. These provenance results indicate that restoring Late Cretaceous clockwise rotation of the Blue Mountains adds a significant …

Inner-Shelf Circulation And Sediment Dynamics On A Series Of Shoreface-Connected Ridges Offshore Of Fire Island, Ny, John Warner, Jeffrey List, William Schwab, George Voulgaris, Brandy Armstrong, Nicole Marshall

George Voulgaris

Locations along the inner-continental shelf offshore of Fire Island, NY, are characterized by a series of shoreface-connected ridges (SFCRs). These sand ridges have approximate dimensions of 10 km in length, 3 km spacing, and up to ∼8 m ridge to trough relief and are oriented obliquely at approximately 30° clockwise from the coastline. Stability analysis from previous studies explains how sand ridges such as these could be formed and maintained by storm-driven flows directed alongshore with a key maintenance mechanism of offshore deflected flows over ridge crests and onshore in the troughs. We examine these processes both with a limited …

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

Measuring Eddy Heat And Constituent Fluxes With High-Resolution Na And Fe Doppler Lidars, Chester S. Gardner, Alan Z. Liu

Alan Z Liu

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.

Inferring The Global Cosmic Dust Influx To The Earth’S Atmosphere From Lidar Observations Of The Vertical Flux Of Mesospheric Na, Chester S. Gardner, Alan Z. Liu, Dan Marsh, Wuhu Feng, John Plane

Alan Z Liu

Dinosaur Tracksites Of The Paluxy River Valley (Glen Rose Formation, Lower Cretaceous), Dinosaur Valley State Park, Somervell County, Texas., James O. Farlow, Mike O'Brien, Glenn J. Kuban, Benjamin F. Dattilo, K. T. Bates, Peter L. Falkingham, L. Pinuela, Amanda Rose, A. Freels, C. Kumagai, Courtney Libben, Justin Smith, J. Whitcraft

Benjamin F. Dattilo

In 1940 R.T. Bird of the American Museum of Natural History collected segments of a sauropod and a theropod trackway from a site in the bed (Glen Rose Formation; Lower Cretaceous) of the Paluxy River, in what is now Dinosaur Valley State Park (Glen Rose, Texas, USA). However, Bird left undocumented thousands of other dinosaur footprints from this and other Paluxy tracksites. In 2008 and 2009 our international team carried out fieldwork to create detailed photomosaics of extant Paluxy tracksites, using GIS technology to combine these with historic maps and photographs. We also made photographs, tracings, LiDAR images, and measurements …

What Can We Learn From Confusing Olivella Columellaris And O. Semistriata (Olivellidae, Gastropoda), Two Key Species In Panamic Sandy Beach Ecosystems?, Allison I. Troost, Samantha D. Rupert, Ariel Z. Cyrus, Frank V. Paladino, Benjamin F. Dattilo, Winfried S. Peters

Benjamin F. Dattilo

Olivella columellaris (Sowerby 1825) and O. semistriata (Gray 1839) are suspension-feeding, swash-surfing snails on tropical sandy beaches of the east Pacific. While they often are the numerically dominant macrofaunal element in their habitats, their biology is poorly understood; the two species actually have been confused in all of the few publications that address their ecology. Frequent misidentifications in publications and collections contributed also to an overestimation of the geographic overlap of the two species. To provide a sound taxonomic basis for further functional, ecological, and evolutionary investigations, we evaluated the validity of diagnostic traits in wild populations and museum collections, …

Tempestites In A Teapot? Condensation-Generated Shell Beds In The Upper Ordovician, Cincinnati Arch, Usa., Benjamin F. Dattilo, Carlton E. Brett, Thomas J. Schramm

Benjamin F. Dattilo

Skeletal concentrations in mudstones may represent local facies produced by storm winnowing in shallow water, or time-specific deposits related to intervals of diminished sediment supply. Upper Ordovician (Katian) of the Cincinnati region is a mixed siliciclastic-carbonate succession including meter-scale cycles containing a shelly limestone-dominated phase and a mudstone-dominated phase. The “tempestite proximality model” asserts that shell-rich intervals originated by winnowing of mud from undifferentiated fair-weather deposits. Thus shell beds are construed as tempestites, while interbedded mudstones represent either fair-weather or bypassed mud. Meter-scale cycles are attributed to sea-level fluctuation or varying storm intensity. Alternatively, the “episodic starvation model” argues, on …

Water Quality Effects Of Cellulosic Biofuel Crops Grown On Marginal Land, Ruoyu Wang

Ruoyu Wang