| CENTRAL
MICHIGAN UNIVERSITY
|
| CENTRAL
MICHIGAN UNIVERSITY
|
 |
Sven
S. Morgan Initial Appointment : August 1999 Specialties : Structural Geology, Tectonics, and Contact Metamorphism PhD : Virginia Polytechnic
University Courses : Physical Geology Lecture and Laboratory, Introduction to Earth Systems, Field Methods, Structural Geology |
Sven (left) and his colleague, Michel de Saint Blanquat, in the Sierra Nevada.
Research Interests
My principal interests are examining, measuring, and interpreting the deformational story within metamorphic rocks. I am currently concentrating on rocks that have been “cooked” and “stretched” around rising igneous intrusions. I focus on the deformation mechanisms which allow rocks to deform ductilely and accommodate large strains.
I am also trying to understand how plutons and laccoliths are emplaced in the Earth's crust, and I do this mainly by studying the magmatic alignment of minerals through a technique called AMS (anisotropy of magnetic susceptibility). I work in the high desert mountains (White-Inyo) of eastern California and in the desert mountains (Henrys) and plateaus of southern Utah.
Here at CMU I teach Structural Geology, Field Methods, Physical Geology, and Physical Geology Lab. I, along with colleague and buddy Dave Matty, routinely take students up the to U.P. to map, see some great structures, and observe some beautiful igneous and metamorphic rocks.
During this past summer (2000) I brought 3 CMU geology majors out to Utah for 3 weeks to examine a laccolith in the Henry Mountains, Utah. Amy Stanik, CMU geology senior, is completing her senior thesis on deformation of sandstones surrounding the laccolith, and I am trying to understand how the laccolith was emplaced. We camped, had a rattlesnake in our camp (which ate a small mouse), and shipped home 19 boxes of beautiful Utah rocks for analyses.
I submitted an NSF grant proposal (June 2000) to continue working in the Henry Mts, Utah, and have just received word from NSF that my proposal has been funded. This is a collaborative research proposal with Basil Tikoff (Univ. of Wisconsin Madison). Basil and I, along with as many students as we can carry, will be spending much of the next two summers (2001 & 2002) in southern Utah mapping and collecting samples.
I currently collaborate with my former PhD advisor, Rick Law (Virginia Tech), Michel de Saint Blanquat (CNRS, Toulouse, France), Basil Tikoff (Univ. of Wisconsin-Madison), and Steve Shaver (University of the South).
Manuscripts in progress
Morgan, S.S., and Law, R.D. Deformation mechanisms within concordant metasedimentary aureoles surrounding Jurassic plutons, central White-Inyo Range, eastern California
Morgan, S.S., Saint Blanquat, M., and Law, R.D., AMS, laminar flow, and emplacement of the Eureka Valley-Joshua Flat-Beer Creek pluton, central White-Inyo Range, eastern California
Manuscripts in Press
St Blanquat, M., Law, R.D., Bouchez, J-L., and Morgan, S.S., Internal structure and emplacement of the Papoose Flat pluton: an integrated structural, petrographic and magnetic susceptibility study. Accepted for publication in GSAB
Morgan, S.S., Law, R.D., and Saint Blanquat, M., Papoose Flat, EJB, and Sage Hen Flat plutons: Examples of rising, sinking, and cookie-cutter plutons in the central White-Inyo Range, eastern California, in Lageson, D.R., Peters, S.G., and Lahren, M.M., eds., Great Basin and Sierra Nevada, Chapter 9 of Geological Society of America Field Guide 2
Book Chapters
Morgan, S.S., and Law, R.D. (1998) An overview of Paleozoic - Mesozoic Age Structures Developed in the Central White - Inyo Range, Eastern California, in Ernst, W.G., and Nelson, C.A., eds., Integrated Earth and Environmental Evolution of the Southwestern United States: Columbia, MD, Bellwether, p. 161-172.
Publications
Morgan, S.S., Law, R.D., and Nyman, M.W. (1998) Laccolith-like emplacement model for the Papoose Flat pluton based on porphyroblast-matrix analysis: Geological Society of America Bulletin, v. 110, p. 96-110.
Morgan, S.S., Law, R.D., and Saint Blanquat (de), M., (1998), Aureole deformation associated with inflation of the concordant Eureka Valley-Joshua Flat-Beer Creek pluton, central White-Inyo Range, eastern California: Guidebook to Field Trip #5, 94 Annual Meeting, Cordilleran Section, Geological Society of America, California State Unversity Long Beach, 30 p.
Nyman, M.W., Law, R.D., and Morgan, S.S. (1995) Conditions of contact metamorphism, Papoose Flat pluton, eastern California, USA: implications for cooling and strain histories: Journal of Metamorphic Geology, v. 13, p. 627-643.
Morgan, S.S. (1995) Discussion, "The Ardara pluton, Ireland: deflating an expanded intrusion" a paper by R.H. Vernon and S.R. Paterson: Lithos, v. 35, p. 129-133.
Law, R.D., Sylvester, A.G., Nelson, C.A., Morgan, S.S. & Nyman, M. (1993) Deformation associated with emplacement of the Papoose Flat pluton, Inyo Mountains, eastern California: Geologic Overview and Fieldguide. In: Lahren, M.M., Trexler, J.H. Jr. and Spinosa, C. (eds.) Crustal Evolution of the Great Basin and Sierra Nevada: Cordilleran - Rocky Mountain Sections, Geological Society of America Guidebook, Department of Geological Sciences, University of Nevada, Reno, 231-262.
Law, R.D., Morgan, S.S. Casey, M. Nyman, M. and Sylvester, A.G. (1992) The Papoose Flat Pluton of eastern California: a reassessment of its emplacement history in the light of new microstructural and crystallographic fabric observations, Transactions of the Royal Society of Edinburgh: Earth Sciences, 83, 361-375.
Morgan, S.S. (1991) Definition and extent of the intermediate aquifer in the Endicott Field, Technical Report for BP Exploration (Alaska) Inc., Report No. GS(TR) 91.007.
Abstracts
*indicates student author
Berndt, A.J.*, and Morgan, S.S., (2000) NE-oriented joints in Michigan: Alleghenian deformation or result of modern day stress field? North-Central regional meeting of the Geological Society of America, April, 2000.
Morgan, S.S., (1999) Barcroft structural break, White Mountains, CA: Insight into the emplacement of the Sierra Nevada Batholith. Geological Society of America Abstracts with Program, A-235
Saint Blanquat, M., Law, R.D., Tikoff, B., Morgan, S. & Bouchez, J.L. (1999) The role of rates in emplacement mechanisms of granitic magmas. Fourth Hutton Symposium: The Origin of Granites and Related Rocks. Clermond Ferrand, France. 20-25 September 1999. Documents du BRGM No. 290, (edited by Barbarin, B.), p. 90.
Morgan, S.S., Saint Blanquat (de), M. and Law, R.D., (1998) AMS from the EJB pluton, eastern California: Laminar flow, flow direction, internal contacts, boundary layers, rheology, and implications for emplacement, Geological Society of America Abstracts with Program, Fall National Conference.
Morgan, S.S., Law, R.D., and Saint Blanquat (de), M. (1998) Radial expansion/emplacement of the EJB pluton: A model based on magmatic fabrics (AMS) and wall rock deflections, Geological Society of America Abstracts with Program, v. 30, no. 5, A63.
Saint Blanquat, M., Tikoff, B., Law, R.D., Morgan, S.S., Teyssier, C., and Bouchez, J-L., (1998) Late Cretaceous magmatism in the Sierra Nevada and White-Inyo Range, California: interplay between regional stress and magma pressure, Penrose Conference on Processes of Crustal Differentiation: Crust-Mantle Interactions, Melting, and Granite Migration through the Crust. July 4-11, Verbania, Italy.
Morgan, S.S., and Law, R.D. (1996) Concordant aureoles and multiple pulses of metamorphism: Reducing the pluton emplacement problem by multiple injections of magma, Geological Society of America Abstracts with Program
Morgan, S.S., and Law, R.D. (1996) Boudinage: A strain accommodation mechanism for aureole attenuation in the central White Inyo range Geological Society of America, Cordilleran Section, Program with Abstracts, 28, No. 5, A-21.
Law, R.D., Morgan, S.S., Saint Blanquat (de), M., Bouchez, J.-L. & Nyman, M. (1996) Contrasting styles of internal flow and wall rock deformation associated with pluton emplacement in the White-Inyo Range of eastern California, USA. 30th International Geological Congress, Beijing, China, August 4 - 14 1996. Abstract Volume 2, page 424.
Morgan, S.S., Law, R.D., Saint Blanquat de, M., Bouchez, J.-L. (1995) Kilometer scale vertical translation, concordancy, and non-rotation of porphyroblasts surrounding the Papoose Flat pluton: Inclusion trails and AMS reveal the kinematics of emplacement, The Third Hutton Symposium on The Origin of Granite and Related Rocks, College Park, MD.
Morgan, S.S., and Law, R.D. (1995) Two phases of folding and cleavage development pre-date Mesozoic forceful and passive pluton emplacement in the central White-Inyo Range, Geological Society of America Penrose Conference on, Mesozoic evolution of the Cordilleran continental margin in central and southern California, Tehachapi, CA.
Morgan, S.S., and Law, R.D. (1994) Forceful intrusion of Jurassic Plutons in the central White-Inyo range, eastern California, Geological Society of America, national meeting, Abstracts with Program, v. 26, A-134.
Morgan, S.S. and Henika, W.S. (1994) 4000 feet of shortening within the Kennedy Coal bed duplex at McClure, Cumberland overthrust block, SW Virginia. SE GSA meeting, Program with Abstracts, 26, No. 4, A-57.
Saint Blanquat (de), M., Law, R.D., Bouchez, J.L., and Morgan, S.S. (1994) Emplacement of the Papoose Flat pluton: a reinspection using Anisotropy of Magnetic Susceptibility and microstructures: Geological Society of America, Program with Abstracts, v. 26, p. A-134.
Morgan, S.S. and Law, R.D. (1993) Fry analysis on K-feldspar megacryst distribution within the Papoose Flat Pluton, Inyo Mountains, California. Geological Society of America, Cordilleran-Rocky Mountain section, Program with Abstracts, 25, No 5, A124.
Law, R.D., Morgan, S.S., Sylvester, A.G. & Nyman, M. (1993) The Papoose Flat pluton, Inyo Mountains, California: a reassessment of the kinematics of deformation and emplacement history in the light of current fabric data. Geological Society of America, Cordilleran - Rocky Mountain Sections Meeting, Program with abstracts, 25, No 5, A67.
Morgan, S.S., Law, R.D. & Nyman, M.W. (1992) Coaxial spinning deformation and non-rotation of porphyroblasts surrounding the Papoose Flat Pluton, Inyo Mountains, California. Geological Society of America, Program with Abstracts 24, No 7, A146.
Nyman, M.W., Law, R.D. & Morgan, S.S. (1992) Contact metamorphism associated with emplacement of the Papoose Flat Pluton, Inyo Mountains, California. Geological Society of America, Program with Abstracts, 24, No 7, A248-9.
Morgan, S.S. Law, R.D. and Sylvester, A.G. (1991) Strain path partitioning during contact metamorphism and emplacement of the Papoose Flat Pluton, Eastern California, Geological Society of America annual meeting, Program with Abstracts, 23, No. 5, A175.
Return to the Faculty and Staff Page
Return to the Main Page of the Department of Geology
Return to the College of Science and Technology Home Page
Return to Central Michigan University Home Page.
This page is maintained by david.j.matty@cmich.edu
Other questions should be directed to: webmeister@coast.cmich.edu
