Title

A Comparison of Sieve Analysis Techniques in the St. Peter Sandstone

Presenter Information

Clinton Roberts

Department

Geosciences and Geological and Petroleum Engineering

Major

Geology and Geophysics

Research Advisor

Laudon, Robert C.

Advisor's Department

Geosciences and Geological and Petroleum Engineering

Funding Source

Opportunities for Undergraduate Research Experience

Abstract

Grain size analyses have been applied to soils, sediments and sedimentary rocks for over 100 years. Many types of analyses have been used and several are well established in soil science and sedimentary petrology. A new method involving cubic splines has been developed that has no distribution bias, such as Gauss normal, and not only measures mean, standard deviation, skewness and kurtosis accurately, but also identifies embedded modes that are not commonly identified by other methods. This analysis compares the cubic spline procedure against the more traditional Method of Moments analysis on one of the most famous and controversial formations in North America, the Ordovician St. Peter Sandstone. The new procedure appears to compare favorably to the Method of Moments analysis, except that it clearly identifies hidden modes as identified by the second derivative of the clamped cubic spline.

Biography

Clinton is a senior undergraduate in Geology & Geophysics, in the Department of Geological Sciences and Engineering. He is also an active member of the C.L Dake Geological Society, Sigma Gamma Epsilon, and the Society of Exploration Geophysicists.

Research Category

Natural Sciences

Presentation Type

Poster Presentation

Document Type

Poster

Award

Natural Sciences poster session, Third place

Presentation Date

12 Apr 2006, 1:00 pm

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Apr 12th, 1:00 PM

A Comparison of Sieve Analysis Techniques in the St. Peter Sandstone

Grain size analyses have been applied to soils, sediments and sedimentary rocks for over 100 years. Many types of analyses have been used and several are well established in soil science and sedimentary petrology. A new method involving cubic splines has been developed that has no distribution bias, such as Gauss normal, and not only measures mean, standard deviation, skewness and kurtosis accurately, but also identifies embedded modes that are not commonly identified by other methods. This analysis compares the cubic spline procedure against the more traditional Method of Moments analysis on one of the most famous and controversial formations in North America, the Ordovician St. Peter Sandstone. The new procedure appears to compare favorably to the Method of Moments analysis, except that it clearly identifies hidden modes as identified by the second derivative of the clamped cubic spline.