cross-bedding
Tilted sediment strata
Cross-bedding is a geological pattern in sedimentary rock where layers lie at angles to the main horizontal strata.
It forms when sand or sediment is deposited by wind or water currents, creating inclined planes within the rock.
Geologists read cross-bedding to determine ancient wind directions or water flow: The cross-bedding indicates this was once a desert dune system.
Bonding sheets together
- strataParallel geological layers
- bedsFurniture for sleeping
- layeringForming successive strata
- inclinationDisposition toward something
truncation · tabular · trough · planar · herringbone · hummocky · festoon · tangential
Wind-formed sand ridge
- sandbarUnderwater ridge of sediment
- deltaSymbol denoting variation
- fluvialRelating to rivers
- aeolianCaused by moving air
channel · alluvial · tidal · beach · river · braided · meandering · levee
Study of geological deposits
- faciesDiagnostic facial appearance
- stratigraphyStudy of rock layers
- outcropSurfacing native stone
- coreCentral essential portion
thin section · petrology · provenance · fieldwork · measurement · azimuth
Minor surface disturbance
- small-scaleLimited in size or scope
- large-scaleOf great size
- centimeterMetric length unit
- meterDevice that measures usage
thickness · wavelength · amplitude · set · migration
lamination
Bonding sheets together
inclination · truncation · tabular · trough · planar · herringbone · hummocky · festoon · tangential · angular
dune
Wind-formed sand ridge
aeolian · channel · alluvial · tidal · beach · river · braided · meandering · levee · windblown
sedimentology
Study of geological deposits
- faciesDiagnostic facial appearance
- stratigraphyStudy of rock layers
- outcropSurfacing native stone
core · thin section · petrology · provenance · fieldwork · measurement · azimuth
ripple
Minor surface disturbance
- small-scaleLimited in size or scope
- large-scaleOf great size
- centimeterMetric length unit
meter · thickness · wavelength · amplitude · set · migration
- rock featurescliff, cliff face, rock face, crag, overhang
- Sedimentologygrain size, porosity, permeability, stratification, mineralogy
- rock layersstrata, coal seam, formation, horizon, lamination
- sedimentary featureslamination, strata, layers, imbrication, channels
- stratastratum, strata, bed, layer, layers
- paleontologydinosaurs, fossil, paleontology, fossil record, dinosaur bones