A Structural and Paleomagnetic Analysis of the Basalts of Summit Creek
2013
This study is a detailed analysis of the
structural geologyand
paleomagnetismof the
Basaltsof
SummitCreek. Located southeast of
Mount Rainier, this section of layered
basalticflows formed during the Eocene Epoch (55 to 45 Ma). The exact origin of the
Basaltsof
SummitCreek is unknown, but there appears to be a growing connection between the
Basaltsof
SummitCreek and the Crescent
Basalts, which are Eocene
flood basaltslocated on the Olympic Peninsula (Clark, 1989). This study attempts to provide a greater understanding of the emplacement and deformation of the
Basaltsof
SummitCreek and any possible relationship with the Crescent
Basalts. Once
paleomagneticdirections were corrected for core orientation and bedding tilt, none of the flows yielded orientations consistent enough to provide reliable magnetic directions for the section. The scattered magnetic orientations are quite similar to those observed in the Crescent
Basalts. This is does not demonstrate a definite connection between the two
chemically similarEocene volcanic sequences, but it does provide another similarity on the growing list. These two sections require further study to obtain the information needed to show a conclusive relationship beyond just their likeness in age, chemical and degree of alteration.
Keywords:
-
Correction
-
Source
-
Cite
-
Save
1
References
0
Citations
NaN
KQI