Clay mineralogy of the Pungo River formation, Onslow Bay, North Carolina continental shelf / by Michael E. Lyle.
| Author/creator | Lyle, Michael E. author. |
| Other author | Riggs, Stanley R., degree supervisor. |
| Other author | East Carolina University. Department of Geology. |
| Format | Theses and dissertations |
| Production | 1984. |
| Description | 129 leaves : illustrations (some color), maps ; 28 cm |
| Supplemental Content | Access via ScholarShip |
| Subjects |
| Summary | The Pungo River Formation in Onslow Bay, North Carolina consists of the Burdigalian (late early Miocene), Langhian (early middle Miocene), and the Serravallian (middle Miocene) depositional sequences as defined by seismic stratigraphy and biostratigraphy. X-ray diffraction analyses have defined the clay mineral composition of these sequences as follows: [Includes table that cannot be reproduced in this bibliographic record. To see table, click on thesis link in the 856 field.] Clinoptilolite, a zeolite infrequently in the Burdigalian, Langhian, and present throughout mineral, is present not detectable in the the Serravallian. Well crystallized, mica-derived montmorillonite and a poorly crystallized illite are interpreted to be of terrigenous origin. Sepiolite, chamosite, and a glauconitic illite, are interpreted to be of authigenic origin Clinoptilolite is interpreted to be authigenic in the Burdigalian sediments and detrital in the Serrava11ian. The diagenetic alteration of clays and formation of zeolite is thought to be related to variations in availability of Fe, Mg, and silica in response to changing climatic conditions, weathering processes, and sea-level fluctuations. |
| General note | "Presented to the graduate faculty of the Department of Geology ... in partial fulfillment of the requirements for the degree Master of Science in Geology." |
| General note | Advisor: Stanley R. Riggs |
| Dissertation note | M.S. East Carolina University 1984 |
| Bibliography note | Includes bibliographical references (leaves 84-91). |
| Genre/form | dissertations. |
| Genre/form | Academic theses. |
| Genre/form | Academic theses. |
| Genre/form | Thèses et écrits académiques. |
Availability
| Library | Location | Call Number | Status | Item Actions |
|---|---|---|---|---|
| Joyner | University Archives | ASK AT SPECIAL COLLECTIONS DESK | ✔ Available | Request Material |
| Joyner | NC Microforms | MICROFILM* | ✔ Available | |
| Electronic Resources | Access Content Online | ✔ Available |