--> Abstract: The Potential Use of Magnetic Susceptibility as a Correlation Tool within Estuarine Deposits of the Gulf of Mexico, by L. E. Miller, A. R. Simms, T. Troiani, G. Federko, and Y. Yokoyama; #90090 (2009).
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The Potential Use of Previous HitMagneticNext Hit Susceptibility as a Correlation Tool within Estuarine Deposits of the Gulf of Mexico

Miller, Lauren E.1; Simms, Alexander R.1; Troiani, Taylor 1; Federko, Greg 1; Yokoyama, Yusuke 2
1 Boone Pickens' School of Geology, Oklahoma State University, Stillwater, OK.
2 Department of Nuclear and Engineering Management, University of Tokyo, Tokyo, Japan.

As more detailed records of eustatic sea-level and paleoclimate changes become available, it is important to be able to correlate records from different areas. When using radiocarbon dating to establish a chronology, many corrections must be made; therefore, independent methods of correlation are useful to establish robust ties. Previous HitMagneticNext Hit susceptibility is one method suggested as a correlation tool among sediments and rocks. In this study, we conducted an analysis of the utility of Previous HitmagneticNext Hit susceptibility in correlating records from Baffin Bay, Corpus Christi Bay, Copano Bay, and Galveston Bay, Texas. Previous HitMagneticNext Hit susceptibility measurements were taken at approximately 5 centimeter intervals from the cores. Multiple peaks were found in the upper 4 to 10.5 m of the cores, several of which are associated with carbonate nodules (which form in the presence of groundwater) suggesting surface exposure during a period of increased sedimentation in one of the bays. Another prevalent peak was found at approximately the same level in multiple cores and is most likely caused by the 8.2 ka climatic event and can be correlated to similar peaks in a cave in central Texas. The correlation of the 8.2 ka event within multiple bays and a cave in central Texas suggests that Previous HitmagneticNext Hit susceptibility events may provide important correlation tools within estuarine fills from across the Gulf of Mexico Basin and perhaps across the globe. The presence of the Previous HitmagneticTop susceptibility peaks at 8.2 ka also has important implications for paleoclimate during this time.

 

AAPG Search and Discovery Article #90090©2009 AAPG Annual Convention and Exhibition, Denver, Colorado, June 7-10, 2009