Courses

Courses
EACS 103. Earth Surface Environments and Environmental Change/Lab.
The Earth's surface environments are in a constant state of change resulting from the interaction of its atmosphere, hydrosphere, biosphere, and lithosphere. Changes on the surface occur on various time scales from brief, severe storms to glaciations lasting thousands of years and changes in continents and ocean basin environments occurring over millions of years due to tectonic processes. Studies of surficial processes and materials illustrate the dynamic nature of the Earth and provide a key to understanding past and future environmental change. The lectures are complemented with field and laboratory study. Field experiences include day trips to local geologic settings and to the Maine coast. Not open to students who have received credit for GEO 103. Enrollment limited to 29. Normally offered every year. [L] [Q] [S] [SR] M. Retelle.
Concentrations
EACS 104. Plate Tectonics and Hazards/Lab.
Volcanoes, earthquakes, and tsunamis are examples of tectonic hazards that directly affect human populations. Yet the processes responsible for such natural hazards are an integral part of the global tectonic cycle that over millions of years results in the formation of ocean basins, mountain ranges, and the global-scale motion of continents. Study of active and ancient tectonic activity is key to forecasting future volcanic eruptions and earthquakes as well as global environment change. Not open to students who have received credit for GEO 104. Enrollment limited to 26. Normally offered every year. [L] [Q] [QF] [S] [SR] G. Robert.
Concentrations

This course is referenced by the following General Education Concentrations

EACS 107. Katahdin to Acadia: Field Geology in Maine/Lab.
The rocky coast and glaciated bedrock mountains of Maine have a rich 500-million-year geologic history. This hands-on, outdoor-oriented course on Maine's geologic history includes field trips to local geologic settings. Reading and making maps, recording field observations, writing papers, giving talks, and making posters about the variety of geologic environments are the major features of the course. The required trips involve strenuous hiking and sea kayaking. Appropriate outdoor clothing and footwear is needed. Not open to students who have received credit for FYS 327 or GEO 107. Enrollment limited to 29. Normally offered every year. [L] [Q] [QF] [S] [SR] J. Eusden.
Concentrations

This course is referenced by the following General Education Concentrations

EACS 109. Earth’s Climate System/Lab.
The Earth System is comprised of the dynamic interactions between its various components: the biosphere, lithosphere, hydrosphere, and the atmosphere. Humans are perturbing these components at unprecedented rates, resulting in climate and environmental change on regional and global scales. In this course, students examine the Earth’s climate system on multiple timescales and investigate current topics in global change, including the impact of greenhouse gases on global climate, sea level, El Niño, global dimming, and ocean acidification. Experiential learning may include field trips to sites that illustrate environmental change on local and regional scales and analysis of large data sets. Not open to students who have received credit for GEO 109. Enrollment limited to 29. Normally offered every year. [L] [Q] [S] B. Johnson.
ConcentrationsInterdisciplinary Programs

This course is referenced by the following General Education Concentrations

This course counts toward the following Interdisciplinary Program(s)

BI/EA 113. Marine Science.
An integrated, interdisciplinary marine science overview encompassing physical, biological, and social aspects of the marine environment. Oceanography topics encompass origins and geological history of the oceans, structure of basins and sediments, ocean chemistry, as well as currents, waves, and tides. Biological subjects include diversity, physiology, and behavior of marine organisms, ecology of major marine communities, and global change biology. Social considerations include human impacts on marine environments (including fisheries) and conservation. Not open to students who have received credit for BI/GE 113. Enrollment limited to 39. (Community-Engaged Learning.) [Q] [QF] [S] [SR] Staff.
Concentrations

This course is referenced by the following General Education Concentrations

EA/PH 119. The Anthropocene.
This research-based course examines the current geological epoch, the Anthropocene, where humans are the agents of environmental change. How does climate change at present differ from those in the past? How do we know humans really are the drivers of climate change? How can we expect climate change to manifest in the near future? Why is biodiversity important? The course addresses these questions from scientific and mathematical perspectives. The course also critically examines IPCC projections and proposals like the Green New Deal. Students construct their own narrative of the course topics through independent or collaborative research. Normally offered every year. [L] [Q] [S] R. Saha.
Concentrations

This course is referenced by the following General Education Concentrations

EACS 210. Sedimentary Processes and Environments/Lab.
The study of modern sedimentary processes and environments provides geologists with a basis for comparison with ancient deposits preserved in the rock record. The analysis of modern sedimentary environments and reconstruction of ancient environments permit stratigraphic reconstructions at regional and global scales. Laboratory work includes field studies of processes and interpretation of modern and ancient depositional systems. Prerequisite(s): one introductory earth and climate sciences course. Not open to students who have received credit for GEO 210. Enrollment limited to 29. [W2] Normally offered every year. [L] [Q] [QF] [S] [SR] M. Retelle.
Concentrations
EA/ES 217. Mapping and GIS/Lab.
Geographical information systems (GIS) are computer-based systems for geographical data presentation and analysis. They allow rapid development of high-quality maps, and enable sophisticated examination of spatial patterns and interrelationships. In this course students learn the principles of GIS through extensive computer use of ArcGIS (ESRI). Geological and environmental projects introduce students to cartography, common sources of geographic data, methods for collecting novel spatial data, and data quality. Finally, students learn to extend the capabilities of GIS software to tackle more advanced spatial analysis tasks by completing an independent project. Lectures supplement the laboratory component of the course. Prerequisite: one 100-level course in earth and climate sciences or one 200-level course in environmental studies. Not open to students who have received credit for ES/GE 217. Enrollment limited to 19. [L] [Q] [QF] [S] [SR] J. Eusden.
Concentrations

This course is referenced by the following General Education Concentrations

EA/PH 220. Dynamical Climate.
An introduction to the dynamical behavior of climate on geologic and human timescales. Simple conceptual models are developed, with the goal of understanding the role of feedbacks, stability, and abrupt changes. Topics include the basic physics of climate, El Niño/La Niña, climate models, the greenhouse effect and global warming, and glacial cycles. Python is used as the main computational tool; no prior experience is required. Prerequisite(s): MATH 106 and any 100-level earth and climate sciences course. Not open to students who have received credit for GE/PH 220. Enrollment limited to 29. Normally offered every year. [Q] [QF] [S] [SR] R. Saha.
Concentrations

This course is referenced by the following General Education Concentrations

EACS 223. Earth Materials/Lab.
Many geochemical processes that occur within the lithosphere, such as crystallization of magmas, metamorphism, and weathering, are understood through the study of minerals and rocks. This course covers the occurrence and composition of the common rock-forming minerals; the mineral reactions and assemblages typical of igneous, metamorphic, and sedimentary environments; and applications to a range of tectonic processes. The laboratory involves the identification of minerals and the determination of mineral composition in hand specimen and by optical microscopy, energy dispersive X-ray spectrometry, and X-ray diffraction. Prerequisite(s): one introductory earth and climate sciences course. Not open to students who have received credit for GEO 223. Enrollment limited to 29. [W2] Normally offered every year. [L] [Q] [QF] [S] [SR] G. Robert.
Concentrations

This course is referenced by the following General Education Concentrations

EA/ES 226. Hydrogeology.
Hydrogeology is the study of the movement and interaction of underground fluids within rocks and sediments. This course uses hydrogeology as a disciplinary framework for learning about groundwater processes, contamination, supply, use, and management. Students engage in practical applications of hydrogeology via discussions, guest lectures, research projects, problem sets, and hands-on experience. Students learn field and laboratory methods for determining and analyzing groundwater flow, contamination, and aquifer properties by working at local sites of interest in central Maine. Prerequisite(s): ENVR 203 or one 100-level earth and climate sciences course. Not open to students who have received credit for ES/GE 226. Enrollment limited to 22. [QF] [S] [SR] B. Johnson.
Concentrations

This course is referenced by the following General Education Concentrations

EACS 230. Earth Structure and Dynamics/Lab.
The processes of mountain building and plate tectonics are understood by observing the structure and architecture of rocks. This course explores the nature and types of structures present in rocks that make up the Earth's crust. Fundamental concepts and principles of deformation are examined in a variety of field settings. The laboratory introduces the techniques used in descriptive and kinematic structural analysis. Several one-day excursions and one weekend field trip may take place throughout Maine and the mountains of the northern Appalachians. Prerequisite(s): any 100-level earth and climate sciences course. Not open to students who have received credit for GEO 230. Enrollment limited to 29. [W2] Normally offered every year. [L] [Q] [QF] [S] [SR] J. Eusden.
Concentrations
EACS 240. Environmental Geochemistry/Lab.
Environmental geochemistry draws from concepts in earth, climate, and environmental sciences, biology, and chemistry to study the behavior of natural and anthropogenic materials as they cycle through the various components of the Earth System. In this introduction to the field, students explore rock-water interactions, chemical equilibria, and biogeochemical cycling and develop field, laboratory, and modeling skills to work on local current environmental problems. Students may investigate climate change; mitigation and adaptation; surface and groundwater contamination by salt, arsenic, nutrients, and/or heavy metals; acid mine drainage; and the history of atmospheric lead deposition. The laboratory includes fieldwork, chemical analysis of environmental samples using inductively coupled plasma emission spectroscopy, and stable isotope ratio mass spectrometry and modeling using STELLA. Prerequisite(s): any 100-level earth and climate sciences course. Not open to students who have received credit for GEO 240. Enrollment limited to 19. [W2] Normally offered every year. [L] [Q] [QF] [S] [SR] B. Johnson.
ConcentrationsInterdisciplinary Programs

This course counts toward the following Interdisciplinary Program(s)

EACS 304. Planetary Geology.
An introduction to the physical states, interior structures, chemistry, petrology, geology, and geologic processes of solar systems bodies: planets, moons, asteroids, comets, sun. The course covers nucleosynthesis and the formation and evolution of the Solar System. Prerequisite(s) or corequisite(s): EACS 223. Recommended background: introductory courses in chemistry and/or physics or EACS 383. Not open to students who have received credit for GEO 304. Enrollment limited to 15. [Q] [QF] [S] [SR] G. Robert.
EACS 341. Stable Isotope Geochemistry.
The stable isotope composition of modern and ancient waters and biological materials has revolutionized our understanding of biogeochemical cycling at the Earth's surface and of environmental change. This course focuses on the theory and applications of stable isotope fractionation in water and biological materials for modern and past environmental research. The course may include fieldwork within the Androscoggin River watershed and the Maine coast and use of a stable isotope ratio mass spectrometer. Students are engaged in projects that may include tracking changes in carbon cycling in lakes, salt marshes, and trees through time, and documenting changes in energy flow in modern and ancient marine food webs. The interdisciplinary nature of the subject material lends itself well to upper-level students from a variety of science majors. Prerequisite(s): CHEM 107A and any 200-level earth and climate sciences course. Recommended background: EACS 240. Not open to students who have received credit for GEO 340 or 341. Enrollment limited to 15. [Q] [QF] [S] [SR] B. Johnson.
EACS 360. Independent Study.
Students, in consultation with a faculty advisor, individually design and plan a course of study or research not offered in the curriculum. Course work includes a reflective component, evaluation, and completion of an agreed-upon product. Sponsorship by a faculty member in the program/department, a course prospectus, and permission of the chair are required. Students may register for no more than one independent study per semester. Normally offered every semester. Staff.
EACS 383. The Lithosphere/Lab.
The formation and occurrence of rocks in the lithosphere are directly relatable to plate tectonic processes. Tectonic environments such as rift valleys or subduction zones are characterized by specific assemblages of igneous and metamorphic rocks. This course examines rock and mineral assemblages typical of global tectonic environments, the processes by which they are generated, and the methods by which they are studied. Prerequisite(s): any 200-level earth and climate sciences course. Recommended background: EACS 223. Not open to students who have received credit for GEO 383. Enrollment limited to 15. [L] [Q] [QF] [S] [SR] G. Robert.
EACS 391. Seminar in Appalachian Geology.
A study of the Appalachian Mountain Belt and the tectonic evolution of the Appalachian Mountains. Plate tectonic models that are particularly helpful are discussed in detail. Students are expected to conduct independent work and give oral and written reports. Fieldwork may include several day trips and an overnight traverse through the northern Appalachians of Vermont, New Hampshire, and Maine. Prerequisite(s): any 200-level earth and climate sciences course. Not open to students who have received credit for GEO 391. Enrollment limited to 15. [Q] [S] J. Eusden.
EACS 457. Senior Thesis.
The thesis is a program of independent research conducted by the student, on a field, laboratory, and/or computational problem, under the direction of a faculty mentor. Seniors participate in the regularly scheduled weekly seminar, which includes preparation of an annotated bibliography, a thesis proposal, and timely submission of written results and oral progress reports of thesis research. Students are responsible for scheduling weekly individual meetings with their faculty committee. A public presentation is scheduled during finals week. Students register for EACS 457 in the fall semester. Students conducting a two-semester thesis must register for both EACS 457 and 458. Enrollment limited to 15. [W3] Normally offered every year. Staff.
EACS 458. Senior Thesis.
The thesis is a program of independent research conducted by the student, on a field, laboratory, and/or computational problem, under the direction of a faculty mentor. Seniors participate in the regularly scheduled seminar, which includes timely submission of written results and oral progress reports of thesis research. Students are responsible for scheduling individual meetings with their faculty committee. A public presentation and an oral defense are scheduled the during the final week of the winter semester. Students register for EACS 458 in the winter semester. Students conducting a two-semester thesis must register for both EACS 457 and 458. Enrollment limited to 15. [W3] Normally offered every year. Staff.
Short Term Courses
EACS s23. Melts, Glasses, and Magmas/Lab.
The Earth cools as magma transports heat from its interior to the surface, sometimes resulting in spectacular volcanic eruptions. This course explores the factors that control magma behavior in various geologic systems by studying fossil magma chambers in Maine, performing hands-on experiments with food analogs or molten rock in the laboratory at Bates, and working with industrial glass in art studios. Prerequisite(s): any 100-level chemistry, geology, or physics course. Not open to students who have received credit for GEO s23. Open to first-year students. Enrollment limited to 18. [L] [Q] [S] G. Robert.
Concentrations

This course is referenced by the following General Education Concentrations

EACS s50. Independent Study.
Students, in consultation with a faculty advisor, individually design and plan a course of study or research not offered in the curriculum. Course work includes a reflective component, evaluation, and completion of an agreed-upon product. Sponsorship by a faculty member in the program/department, a course prospectus, and permission of the chair are required. Students may register for no more than one independent study during a Short Term. Normally offered every year. Staff.
Concentrations

This course is referenced by the following General Education Concentrations