Bibliographic Citation
| Document | For copies of Journal Articles, please contact the Publisher or your local public or university library and refer to the information in the Resource Relation field. For copies of other documents, please see the Availability, Publisher, Research Organization, Resource Relation and/or Author (affiliation information) fields and/or Document Availability. |
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| Title | Climatic and stratigraphic implications of clay mineral changes in Paleocene/Eocene boundary strata -- Eastern United States |
| Creator/Author | Gibson, T.G. ; Bybell, L.M. ; Owens, J.P. ; Mason, D.B. ; McCartan, L. ; Snow, J.N. (Geological Survey, Reston, VA (United States)) |
| Publication Date | 1994 Mar 01 |
| OSTI Identifier | OSTI ID: 6918348 |
| Report Number(s) | CONF-9404221-- |
| Other Number(s) | ISSN0016-7592; CODEN: GAAPBC |
| Resource Type | Conference |
| Specific Type | Journal Article |
| Resource Relation | Geological Society of America, Abstracts with Programs ; Vol/Issue: 26:4; 43. annual meeting of the Southeastern Section of the Geological Society of America; 7-8 Apr 1994; Blacksburg, VA (United States) |
| Subject | 540110 ;580000 -- Geosciences; CLAYS-- WEATHERING;GEOLOGIC FORMATIONS-- STRATIGRAPHY;GEOLOGIC FORMATIONS-- WEATHERING;SEDIMENTARY BASINS-- GEOLOGIC FORMATIONS;SEDIMENTARY BASINS-- PALEOCLIMATOLOGY;US EAST COAST-- SEDIMENTARY BASINS; DIAGENESIS;GEOLOGIC HISTORY |
| Related Subject | DEVELOPED COUNTRIES;GEOLOGIC STRUCTURES;GEOLOGY;NORTH AMERICA;PALEONTOLOGY;USA |
| Description/Abstract | A major change in the clay mineral suite from predominantly illite/smectite and illite to predominantly kaolinite is present in uppermost Paleocene neritic deposits in the Salisbury embayment of the northeastern US.^The clay mineral change occurred during a time of relatively high sea level and is associated with biotic, climatic, and oceanographic changes.^This kaolinite increase in middle-latitude areas of the western North Atlantic Ocean, and similar increases in coeval deep-marine sediments off Antarctica and in the eastern North Atlantic Ocean, suggests that intensified weathering due to increased temperature and precipitation was widespread in the latest Paleocene.^In the Salisbury embayment, kaolinite proportions rapidly increase from less than 5% in upper Paleocene strata to maximum values of 50 to 60% near the top of the Paleocene (top of calcareous nannofossil Zone NP 9).^High kaolinite proportions continue into the lowest Eocene strata (lowermost zone NP 10), but the kaolinite proportion rapidly decreases to 5% or less within the lower part of Zone NP 10.^The pattern of kaolinite increasing to maximum values in the latest Paleocene, followed by decreasing values in the earliest Eocene can be used for correlation within the upper Paleocene and lower Eocene units in the Salisbury embayment.^On this basis, it is suggested that during the early Eocene, large parts of the uppermost Paleocene and lowermost Eocene clay were eroded from landward parts of the basin. |
| Country of Publication | United States |
| Language | English |
| Format | Pages: 15 |
| System Entry Date | 2001 May 13 |
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Last Updated: 02/13/2009