Learn Sedimentology from the Scratch

Discover sedimentary structures and textures, classify primary, secondary, inorganic, and organic types, and identify top, bottom, and within-bed features like ripple marks and desiccation cracks to infer deposition.

Explore sedimentary structures formed within beds, including mud cracks and desiccation features, model X and pseudo structures, cross-bedding types, lenticular bedding, and related stratification patterns.

Learn about bottom sedimentary structures, or sole marks, formed by erosional and depositional processes, and identify directional indicators like cross-bedding and curved marks that reveal flow direction.

Explore conglomerate types, including auto-conglomerates with glass in contact, open vs closed framework, and matrix vs glass-supported structures; assess transport distance, competence, and deduced transport mechanisms.

Learn how clastic rocks are classified by textural maturity, including sorting, roundness, and matrix, with compositional maturity, mineral stability, provenance and tectonic settings, and turbidites.

Explore diagenesis, lithification, and cementation, detailing burial processes—compaction, differential compaction, dissolution, precipitation, and replacement—and how cements shape porosity and permeability.

Explore shallow marine environments, carbonate production, reef types, and ramp forms on the continental shelf. Examine deep marine sedimentation driven by turbidity currents, debris flows, submarine canyons, and accommodation space.

Explore porosity and permeability in sedimentary rocks, covering primary and secondary porosity, granular and micro porosity, and dissolution or fracture porosity, plus total and effective porosity concepts.

Describe the Bouma sequence formed by turbidity currents on steep submarine slopes, showing coarser bottom to finer top sediments and related features like ripple laminations and flame structures.

Explore the classification of stylolites by bedding relation and geometry, detailing horizontal, inclined, vertical, cross-cutting and interconnected types, microsatellites, wispy and solution seams, amplitude, contact features, and sedimentary environments.

Analyze sedimentary basins through subduction geometry, margins, and arc settings, including back-arc and forearc scenarios. Integrate stratigraphy, subsidence, thermal history, and geophysical data to interpret basin evolution.

Understand Reynolds and Froude numbers, geometric and logarithmic grain size scales, and viscosity relations to distinguish laminar, transitional, and turbulent flow and associated sedimentary structures.

Learn to compute sediment particle sphericity and roundness using six times the particle volume over the sphere diameter, with cylinder, cube, and hemisphere numerical examples.

Explore lagoons as transitional coastal environments, their formation, types (coastal and atoll lagoons), and how sedimentary textures—grain size, sorting, and shape—reveal transgression, regression, and depositional history.

Explore transitional marine environments and deltas, including river-dominated bird-foot deltas, tidal-dominated deltas, and Gilbert-type deltas, along with sediment supply, river-mouth morphology, and tidal processes.

Explore dolomitisation processes, replacement and crystallization in carbonates, and compare mixing-zone, reflex, burial, and seawater models for dolomite formation.

Explore sandstone classification using ternary quartz–feldspar–lithic diagrams, assess matrix content, sorting, and textural maturity to identify clastic rock types.

Learn how sedimentary environments—from continental to deep marine—are controlled by sediment sources, transport processes, and accommodation space, with emphasis on shallow marine dynamics and storm-related structures.

Explore secondary chemical sedimentary structures, including concretions and skylights, formed by pressure solution and groundwater-driven mineral precipitation in limestones, with geometric classifications and porosity controls.