[[Berkas:Dune de sable au parc Culturel De l'Ahaggar crop.jpg|jmpl|Gumuk di kawasan Taman Budaya Ahaggar, [[Provinsi Tamanghasset]], [[Aljazair]].]]
'''Gumuk'''<ref>{{cite web |url=https://geo.ugm.ac.id/2016/11/16/monitoring-zona-inti-gumuk-pasir-kagungan-dalem-karaton-ngayogyakarta-hadiningrat-dalam-perspektif-sains-informasi-geografi/ |title=Monitoring Zona Inti Gumuk Pasir Kagungan Dalem Karaton Ngayogyakarta Hadiningrat dalam Perspektif Sains Informasi Geografi |publisher=Fakultas Geografi Universitas Gadjah Mada |date=2016-11-16 |access-date=2021-12-15 |archive-date=2022-12-01 |archive-url=https://web.archive.org/web/20221201003714/https://geo.ugm.ac.id/2016/11/16/monitoring-zona-inti-gumuk-pasir-kagungan-dalem-karaton-ngayogyakarta-hadiningrat-dalam-perspektif-sains-informasi-geografi/ |dead-url=no }}</ref> atau '''bukit pasir''' merupakan bentuk lahan yang terbentuk akibat perpindahan material sedimenendapan bertekstur [[pasir]] atau material lainnya oleh aliran [[fluida|zat alir]], seperti [[angin]] atau [[air]]. Gumuk yang terbentuk dari hasil proses angin merupakan [[bentuk lahan aeolian]] dengan materialnya yang dapat membentuk bukit, timbunan atau [[gundukan]], ataupun igir.<ref>{{Cite book|last=Cardinale|first=Marco|last2=Hargitai|first2=Henrik|last3=Fitzsimmons|first3=Kathryn E.|date=2015|url=https://doi.org/10.1007/978-1-4614-3134-3_163|title=Dune|location=New York, NY|publisher=Springer|isbn=978-1-4614-3134-3|editor-last=Hargitai|editor-first=Henrik|pages=636–649|doi=10.1007/978-1-4614-3134-3_163|editor-last2=Kereszturi|editor-first2=Ákos|url-status=live|access-date=2021-12-15|archive-date=2023-08-10|archive-url=https://web.archive.org/web/20230810140612/https://link.springer.com/referenceworkentry/10.1007/978-1-4614-3134-3_163|dead-url=no}}</ref> AreaKawasan dengan banyak gumuk disebut sistem gumuk<ref>{{cite encyclopedia |chapter-url=http://www.encyclopedia.chicagohistory.org/pages/394.html |access-date=15 January 2021 |chapter=Dune system |title=Encyclopedia of Chicago |last1=Pavlovic |first1=Noel B. |year=2005}}</ref><ref>{{cite web |url=https://www.biology-fieldwork.org/a-level/succession/sand-dunes/ |access-date=15 January 2021 |title=Sand dunes |website=Biology fieldwork |publisher=Field Studies Council |year=2016 |archive-date=2021-04-25 |archive-url=https://web.archive.org/web/20210425182645/https://www.biology-fieldwork.org/a-level/succession/sand-dunes/ |dead-url=no }}</ref><ref>{{cite web |url=https://www.michigan.gov/documents/deq/wrd-cda-dune-systems_558207_7.pdf |access-date=15 January 2021 |title=Dune systems |publisher=Michigan Department of Environmental Quality |archive-date=2017-09-20 |archive-url=https://web.archive.org/web/20170920225124/http://www.michigan.gov/documents/deq/wrd-cda-dune-systems_558207_7.pdf |dead-url=no }}</ref><ref>{{cite web |url=https://www.restoconlife.eu/en/habitat-to-be-protected/the-dune-system/ |access-date=15 January 2021 |title=The dune system |website=Restoconlife |publisher=Parco Nazionale Arcipelago Toscano |year=2010 |archive-date=2023-03-25 |archive-url=https://web.archive.org/web/20230325133706/https://www.restoconlife.eu/en/habitat-to-be-protected/the-dune-system/ |dead-url=no }}</ref> atau kompleks gumuk.{{sfn|Jackson|1997|loc="Dune complex"}} Kompleks gumuk yang luas disebut padang gumuk,{{sfn|Jackson|1997|loc="Dune field"}} sedangkan daerah datar yang luas ditutupi dengan pasir yang disapu angin atau gumuk dengan sedikit atau tanpa vegetasi disebut ''erg''.<ref>{{cite web |url=http://worldlandforms.com/landforms/erg/ |title=Erg Landforms |access-date=13 October 2019 |work=WorldLandForms |archive-date=2023-05-19 |archive-url=https://web.archive.org/web/20230519181140/http://worldlandforms.com/landforms/erg/ |dead-url=no }}</ref>
