Editing Estuary (section)

===Tectonically produced===
These estuaries are formed by subsidence or land cut off from the ocean by land movement associated with [[Fault (geology)|faulting]], [[volcano]]es, and [[landslide]]s. [[Inundation]] from eustatic sea-level rise during the [[Holocene]] [[Epoch (geology)|Epoch]] has also contributed to the formation of these estuaries. There are only a small number of [[Tectonics|tectonically]] produced estuaries; one example is the [[San Francisco Bay]], which was formed by the crustal movements of the [[San Andreas Fault]] system causing the inundation of the lower reaches of the [[Sacramento River|Sacramento]] and [[San Joaquin River|San Joaquin rivers]].<ref name="Kennish">{{cite book |last=Kennish |first=M. J. |year=1986 |title=Ecology of Estuaries. Volume I: Physical and Chemical Aspects |location=Boca Raton, FL |publisher=CRC Press |isbn=978-0-8493-5892-0 }}</ref>