Geology 103 A Sedimentology and Stratigraphy SACRAMENTO STATE

Geology 103 A Sedimentology and Stratigraphy SACRAMENTO STATE Tim Horner Geology Department, CSU Sacramento Lecture #16: Stratigraphy Reading assignments: maps, field trip guides and journal articles about the local stratigraphic units

Types of stratigraphy:

Types of stratigraphy: biostratigraphy lithostratigraphy chronostratigraphy sequence stratigraphy seismic stratigraphy magnetostratigraphy event stratigraphy cyclostratigraphy chemostratigraphy high-resolution stratigraphy basin analysis

Types of Lithologic contacts

Lithostratigraphic units: Supergroup Group Formation Member bed

Sequence stratigraphy units

Basin accommodation and sequence stratigraphy

Magneto stratigraphy

Magnetostratigraphy is calibrated using biostratigraphy

Summary- magnetic polarity

Biostratigraphic units vs. lithostratigraphic units

Biostratigraphic zoneresults from overlapping ranges

Biostratigraphic zonation

Correlation using fossil assemblages

Processes involved in chronostratigraphy

Paleozoic chronostratigraphic units

Mesozoic chronostratigraphic units

Cenozoic chronostratigraphic units

North American chronostratigraphic units

Schedule and stratigraphy project: Week 10 (April 2 -6): Background research Week 11 (April 9 -13): Visit one outcrop from your formation Week 12 (April 16 -20): Visit a second outcrop of your formation Week 13 (April 23 -27) Delta lecture Midterm #2 Produce poster for stratigraphy project Week 14 (April 30 – May 4) Carbonates lab- present posters

Correlation chart From Springhorn, 2008