Editing Ganges Delta (section)

==Geology==
The Ganges Delta lies at the junction of three tectonic plates: the [[Indian Plate]], the [[Eurasian Plate]], and the [[Burma Plate]].<ref>{{cite web |url=http://www.banglapire.org/Research/tectonics-geophysics |title=Tectonics & Geophysics |website=BanglaPIRE |access-date=13 June 2017 |quote=The Ganges Brahmaputra Delta lies at the junction of three plates: the Indian Plate, the Eurasian Plate and the Burma Platelet. |archive-date=17 June 2017 |archive-url=https://web.archive.org/web/20170617043150/http://www.banglapire.org/Research/tectonics-geophysics |url-status=dead }}</ref> The edge of the [[Eocene]] paleoshelf runs approximately from [[Kolkata]] to the edge of the [[Shillong Plateau]]. The edge of the paleoshelf marks the transition from the thick continental crust in the northwest to the thin continental or oceanic crust in the southeast. The enormous sediment supply from the Himalayan collision has extended the delta about {{convert|400|km}} seaward since the [[Eocene]]. The sediment thickness southeast of the edge of the paleoshelf beneath the Ganges Delta can exceed {{convert|16|km|mi|abbr=on}}.<ref>{{cite journal|last1=Steckler |first1=Michael S. |last2=Humayun |first2=S. Akhter |last3=Seeber |first3=Leonardo |date=15 September 2008 |title=Collision of the Ganges-Brahmaputra Delta with the Burma Arc |url=https://univdhaka.academia.edu/SyedHumayunAkhter/Papers/274196/Collision_of_the_Ganges-Brahmaputra_Delta_with_the_Burma_Arc |journal=Earth and Planetary Science Letters |publisher=Elsevier |volume=273 |issue=3–4 |doi=10.1016/j.epsl.2008.07.009 |access-date=22 April 2013 |quote=The edge of the pre-delta Eocene paleoshelf is marked by the shallow-water Sylhet Limestone, which runs NNE from near Calcutta to the edge of the Shillong Plateau ... The Sylhet Limestone drops ... indicating the presence of thick continental crust. East of the hinge zone the great thickness of sediments indicates that the crust is greatly thinned or oceanic ... The enormous supply of sediments provided by the Himalayan collision fed the [Ganges-Brahmaputra Delta (GBD)] and has produced ~400 km of progradation of the shelf edge since the Eocene ... Total sediment thickness beneath the GBD southeast of the hinge zone exceeds 16 km.}}</ref>