184 / FIELDS OF INSTRUCTION

GY 623-MICROPALEONTOLOGY. 4 credits
 Foraminifera, Ostracoda, and other microscopic fossils.
GY 624-PALEOECOLOGY. 4 credits
 Prerequisite: GY 421 or ZY 308. Paleoautecology, paleosynecology, historical
biogeography of marine invertebrates, and ecological rules as applied to fossil in-
vertebrates.
GY 625-ADVANCED INVERTEBRATE PALEONTOLOGY. 4 credits
 Prerequisite: GY 421. Local field problems in paleoecology or biostratigraphy.
GY 630-INDIVIDUAL WORK. 1 to 5 credits
 For work beyond that offered in regular courses. May be repeated with change
of content up to a maximum of 15 credits.
GY 640-CENOZOIC AND MESOZOIC STRATIGRAPHY. 4 credits
 Cenozoic and Mesozoic stratigraphy with emphasis on the stratigraphy of the
Gulf and Atlantic Coastal Plain; American and European relationships.
GY 651-HYDROGEOLOGY. 4 credits
 Prerequisite: GY 550 or consent of instructor. Principles and concepts of ground-
water flow systems; techniques of flow system delineation; hydrogeologic problems
common to water development.
GY 660-SEMINAR. 1 credit
 Readings in special topics of geology with application to the Coastal Plain.
May be repeated with change of content up to a maximum of 3 credits.
GY 664-FLUVIAL, DELTAIC, AND TRANSITIONAL ENVIRONMENTS
 OF SEDIMENTATION. 4 credits
 Prerequisites: GY 470; GY 560, GY 561, or consent of instructor. Environ-
mental factors and sediment types accumulated in fluvial, deltaic, and other transi-
tional environments; recognition of these environments in ancient rocks.
GY 668-COASTAL AND ESTUARINE GEOLOGY. 4 credits
 Prerequisites: GY 517; GY 560 or COE 610. Origin and distribution of coastal
and estuarine earth materials, evolution of morphological features and the dynamic
changes that occur because of the interplay between terrestrial, marine, and atmos-
pheric processes.
GY 675-GEOLOGICAL OCEANOGRAPHY I. 4 credits
 Prerequisites: GY 470, and GY 517, or consent of instructor. Structural
development, sedimentation processes, and sediments of continental slope, rise,
abyssal plain, and associated deep-sea environments.
GY 690-SPECIAL TOPICS IN GEOLOGY. 4 credits
 Lectures, conferences, or laboratory sessions covering selected topics of current
interest in modem geology. May be repeated with change of content up to a
maximum of 12 credits.
GY 697-SUPERVISED RESEARCH. 1 to 5 credits
 Credit not applicable toward degree. May be repeated.
GY 698-SUPERVISED TEACHING. 1 to 5 credits
 Credit not applicable toward degree. May be repeated.
GY 699-MASTER'S RESEARCH. 1 to 17 credits