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Earth Sciences

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2013

Paleomagnetism

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Full-Text Articles in Physical Sciences and Mathematics

Callovian (Upper Middle Jurassic) Magnetostratigraphy: A Composite Polarity Pattern From France, Britain And Germany, And Its Correlation To The Pacific Marine Magnetic Anomaly Model, Rachel Anne Gipe Jan 2013

Callovian (Upper Middle Jurassic) Magnetostratigraphy: A Composite Polarity Pattern From France, Britain And Germany, And Its Correlation To The Pacific Marine Magnetic Anomaly Model, Rachel Anne Gipe

Open Access Theses

Callovian strata from sixteen exposures across western Europe produced a nearly continuous composite geomagnetic polarity reference sequence spanning the latest Bathonian (Clydoniceras discus Zone) through the entire Callovian and into the earliest Oxfordian (Quenstedtoceras mariae zone). This sequence is compiled from multi-section sequences from France and England, a section in southern Germany, and a section on the Isle of Skye (Scotland). These sections are calibrated with ammonite biostratigraphy, brachiopod associations and sequence stratigraphy. Over 400 oriented core samples were subjected to progressive thermal demagnetization and filtered according to magnetic behavior; the highest quality suite produced mean paleopoles of 67.3°N, 174.8°E …

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A Structural And Paleomagnetic Analysis Of The Basalts Of Summit Creek, Anne Fetrow Jan 2013

A Structural And Paleomagnetic Analysis Of The Basalts Of Summit Creek, Anne Fetrow

Summer Research

This study is a detailed analysis of the structural geology and paleomagnetism of the Basalts of Summit Creek. Located southeast of Mount Rainier, this section of layered basaltic flows formed during the Eocene Epoch (55 to 45 Ma). The exact origin of the Basalts of Summit Creek is unknown, but there appears to be a growing connection between the Basalts of Summit Creek and the Crescent Basalts, which are Eocene flood basalts located on the Olympic Peninsula (Clark, 1989). This study attempts to provide a greater understanding of the emplacement and deformation of the Basalts of Summit Creek and any …

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