Changes

[[file:applied-paleontology_fig17-24.png|thumb|300px|{{figure number|2}}Depositional systems tracts and the bounding surfaces of a stratigraphic sequence depositional model.<ref name=ch17r43 /> Courtesy SEPM.]]

[[file:applied-paleontology_fig17-24.png|thumb|300px|{{figure number|2}}Depositional systems tracts and the bounding surfaces of a stratigraphic sequence depositional model.<ref name=ch17r43 /> Courtesy SEPM.]]

A systems tract (ST) is a linkage of contemporaneous, three-dimensional arrays of lithofacies.<ref name=ch17r39>Fisher, W., L., McGowen, J., H., 1967, Depositional systems in the Wilcox Group of Texas and their relationship to occurrence of oil and gas: Transactions of the Gulf Coast Association of Geological Societies, vol. 17, p. 105–125.</ref><ref name=ch17r21>Brown, L., F., Fisher, W., L., 1977, [http://archives.datapages.com/data/specpubs/seismic1/data/a165/a165/0001/0200/0213.htm Seismic–stratigraphic interpretation of depositional systems: examples from Brazil rift and pull-apart basins], in Payton, C., E., ed., Seismic Stratigraphy—Applications to Hydrocarbon Exploration: [http://store.aapg.org/detail.aspx?id=1157 AAPG Memoir 26], p. 213–248.</ref> [[:file:applied-paleontology_fig17-24.png|Figure 2]] shows depositional systems tracts and the bounding surfaces of a stratigraphic sequence depositional model.

A systems tract (ST) is a linkage of contemporaneous, three-dimensional arrays of lithofacies.<ref name=ch17r39>Fisher, W. L., McGowen, J. H., 1967, Depositional systems in the Wilcox Group of Texas and their relationship to occurrence of oil and gas: Transactions of the Gulf Coast Association of Geological Societies, vol. 17, p. 105–125.</ref><ref name=ch17r21>Brown, L., F., Fisher, W., L., 1977, [http://archives.datapages.com/data/specpubs/seismic1/data/a165/a165/0001/0200/0213.htm Seismic–stratigraphic interpretation of depositional systems: examples from Brazil rift and pull-apart basins], in Payton, C., E., ed., Seismic Stratigraphy—Applications to Hydrocarbon Exploration: [http://store.aapg.org/detail.aspx?id=1157 AAPG Memoir 26], p. 213–248.</ref> [[:file:applied-paleontology_fig17-24.png|Figure 2]] shows depositional systems tracts and the bounding surfaces of a stratigraphic sequence depositional model.

==Fossil assemblages in the systems tract==

==Fossil assemblages in the systems tract==