Cross-bedding is formed in both terrestrial and marine environments. The littoral deltaic type is probably the most common. It also occurs in lake deltas, fluvial bars and channel fills, beaches, sand dunes, and as eolian deposits modifying any of the others. It ranges in size from microscopic to tens of yards thick. Ripple-marks are considered to be miniature dunes. The most important uses of cross-bedding are as a top and bottom indicator and as a current direction indicator. A genetic inference from the shape of any cross-bedded structure cannot be absolutely made.
","abstract_html":"<p>Cross-bedding is formed in both terrestrial and marine environments. The littoral deltaic type is probably the most common. It also occurs in lake deltas, fluvial bars and channel fills, beaches, sand dunes, and as eolian deposits modifying any of the others. It ranges in size from microscopic to tens of yards thick. Ripple-marks are considered to be miniature dunes. The most important uses of cross-bedding are as a top and bottom indicator and as a current direction indicator. A genetic inference from the shape of any cross-bedded structure cannot be absolutely made.</p>","abstract_has_math":false,"creators":["Peterson, Robert T."],"institution":null,"degree_name":"Bachelor of Science (BS)","degree_level":"Thesis","degree_discipline":"Geology","degree_department":null,"school":null,"contributors":[],"advisors":[],"committee_chairs":[],"committee_members":[],"year":1958,"date_issued":"1958-01-01T08:00:00Z","date_published":"1958-01-01T08:00:00Z","updated_at":"2026-07-24T03:24:58Z","subjects":[],"languages":[],"rights":[],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"https://commons.und.edu/senior-projects/35","outbound_label":"Repository record","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:creator","label":"Author","values":["Peterson, Robert T."]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"thesis:degree_discipline","label":"Discipline","values":["Geology"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Thesis"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Bachelor of Science (BS)"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["https://commons.und.edu/senior-projects/35"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["Cross-bedding is formed in both terrestrial and marine environments. The littoral deltaic type is probably the most common. It also occurs in lake deltas, fluvial bars and channel fills, beaches, sand dunes, and as eolian deposits modifying any of the others. It ranges in size from microscopic to tens of yards thick. Ripple-marks are considered to be miniature dunes. The most important uses of cross-bedding are as a top and bottom indicator and as a current direction indicator. A genetic inference from the shape of any cross-bedded structure cannot be absolutely made.
"]},{"key":"dc:title","label":"Title","values":["Cross-Bedding"]}]}],"canonical_facts":{"dc:creator":["Peterson, Robert T."],"dc:description.abstract":["Cross-bedding is formed in both terrestrial and marine environments. The littoral deltaic type is probably the most common. It also occurs in lake deltas, fluvial bars and channel fills, beaches, sand dunes, and as eolian deposits modifying any of the others. It ranges in size from microscopic to tens of yards thick. Ripple-marks are considered to be miniature dunes. The most important uses of cross-bedding are as a top and bottom indicator and as a current direction indicator. A genetic inference from the shape of any cross-bedded structure cannot be absolutely made.
"],"dc:identifier":["https://commons.und.edu/senior-projects/35"],"dc:title":["Cross-Bedding"],"thesis:degree_discipline":["Geology"],"thesis:degree_level":["Thesis"],"thesis:degree_name":["Bachelor of Science (BS)"]},"updated_at":"2026-07-24T03:24:58Z"}