Sources & illustration notes
Factual concepts are paraphrased from the primary sources below. All 40 term diagrams, the landscape plate and model graphics are original vector illustrations. No source photographs, diagrams, audio or logos are reproduced.
Read the evidence correctly
Every illustration is conceptual. It is not a measured surface, a species record, a scientific reconstruction or a prediction. The contour example calculates an ideal plane; the other models use explanatory states. Sources support the vocabulary, not the arbitrary geometry, colors or exposure steps. Observation prompts are editorial suggestions.
Weathering and erosion are separated as breakdown/alteration and transport. Bryce’s named Natural Bridge is an arch in the NPS description; bridge terminology varies. We do not reproduce inconsistent annual freeze/thaw counts, imply that all hoodoos share one life cycle, or transfer a species or soil-crust location from another park.
Source ledger JSON ↓ · Term catalogue JSON ↓ · All original diagrams ↗
- S01
Hoodoos ↗
National Park Service, Bryce Canyon
Supports. Rock deposition, uplift, physical and chemical weathering, contrasting layer resistance, and Claron lake/floodplain context.
Location. The Three-Step Recipe to Create Bryce Canyon
Reviewed 2026-10-02 · Source date 2021-09-04.
- S02
Geology of Bryce Canyon National Park ↗
U.S. Geological Survey
Supports. Hoodoo morphology, uplift, sedimentary context, carbonate dissolution and Claron rock unit.
Location. Hoodoos; Rock Types; Rock Strata in Bryce Canyon
Reviewed 2026-10-02 · Source date not recorded.
- S03
Arches ↗
National Park Service, Bryce Canyon
Supports. Fins, windows, fractures and frost wedging; arch/bridge terminology has an imprecise process distinction.
Location. General Description; Formational Process
Reviewed 2026-10-02 · Source date 2015-02-24.
Limit. No universal opening-size threshold or annual freeze/thaw count is adopted.
- S04
Natural Bridge (Bryce Canyon place record) ↗
National Park Service, Bryce Canyon
Supports. Bryce's named Natural Bridge is an arch; protective layers, windows, plateau edge and amphitheaters.
Location. Description; Landscape Features
Reviewed 2026-10-02 · Source date 2026-08-15.
Limit. This is the Bryce record; /places/natural-bridge.htm without /000/ describes Death Valley and is not the source for Bryce.
- S05
Glossary of Terms ↗
National Park Service, Canyonlands
Supports. Joint, plateau, limestone, formation and unconformity terminology.
Location. Joint; Plateau; Limestone; Formation; Unconformity
Reviewed 2026-10-02 · Source date 2025-04-18.
- S06
History & Culture ↗
National Park Service, Bryce Canyon
Supports. Series of horseshoe-shaped amphitheaters on the eastern Paunsaugunt Plateau edge.
Location. Introduction
Reviewed 2026-10-02 · Source date 2018-06-18.
Limit. Only the geographical description is used; no cultural-history interpretation is added.
- S07
What is a topographic map? ↗
U.S. Geological Survey
Supports. Contours join equal elevations and communicate land shape and slope.
Location. FAQ definition
Reviewed 2026-10-02 · Source date not recorded.
Retrieval. Full definition available in the web search result; some direct open attempts timed out.
- S08
Topographic Map Symbols ↗
U.S. Geological Survey
Supports. Elevation contours and contour interval conventions.
Location. Reading Topographic Maps
Reviewed 2026-10-02 · Source date not recorded.
Retrieval. Indexed source text reviewed; direct PDF open failed. Supporting spacing explanation also cross-checked against gg-s31.
- S09
Weathering ↗
National Park Service, Erosion: Water, Wind & Weather
Supports. In-place physical/chemical weathering, ice in cracks, and mineral dissolution.
Location. Chemical Weathering; Mechanical or Physical Weathering
Reviewed 2026-10-02 · Source date 2023-01-26.
- S10
Weathering and Erosion ↗
National Park Service, Scotts Bluff
Supports. Separate breakdown from transport, and transport from sediment accumulation.
Location. The Processes; Erosion
Reviewed 2026-10-02 · Source date 2021-11-24.
Limit. No Scotts Bluff rates or landscape history are transferred to Bryce.
- S11
Mass Wasting ↗
National Park Service, Erosion: Water, Wind & Weather
Supports. Gravity-driven downslope rock/soil movement; rockfall, slump and debris-flow examples.
Location. Introduction; Rock Fall or Topple
Reviewed 2026-10-02 · Source date 2019-09-11.
- S12
Watersheds and Drainage Basins ↗
U.S. Geological Survey, Water Science School
Supports. Surface runoff, infiltration, evaporation and plant uptake; not all precipitation exits as runoff.
Location. Not all precipitation that falls in a watershed flows out
Reviewed 2026-10-02 · Source date 2026-09-17.
- S13
Sedimentary Rocks ↗
National Park Service, Geology
Supports. Sedimentary origins, lithification, compaction, cementation, grain sizes and bedding.
Location. Introduction; Key Terms; Clastic Sedimentary Rock
Reviewed 2026-10-02 · Source date 2024-07-08.
- S14
Geologic Principles—Superposition and Original Horizontality ↗
National Park Service
Supports. Relative bed order and sedimentary layering.
Location. Superposition
Reviewed 2026-10-02 · Source date 2024-11-04.
Limit. The entry explicitly restricts the simple older-below-younger rule to a sequence not overturned.
- S15
A Fossil's Journey ↗
National Park Service, Teachers
Supports. Fossils include remains and activity traces; sedimentary environments vary; fossils need not be mineralized.
Location. Definition of a Fossil; Sedimentation; Trace Fossils
Reviewed 2026-10-02 · Source date not recorded.
- S16
Paleontology, Lesson 2: Terminology ↗
National Park Service, Petrified Forest
Supports. Mudstone contains silt/clay-sized material; sandstone has cemented sand grains; erosion and deposition definitions.
Location. Terminology, printed page 12
Reviewed 2026-10-02 · Source date not recorded.
- S17
Plants ↗
National Park Service, Bryce Canyon
Supports. Bryce plant communities differ among uplands, exposed breaks, meadows, seeps and springs.
Location. Introduction
Reviewed 2026-10-02 · Source date 2023-04-30.
- S18
Habitats of Shenandoah National Park ↗
National Park Service, Shenandoah Education Program
Supports. Habitat supplies life needs; ecosystems include interacting living and nonliving components.
Location. Background Information and Vocabulary, printed page 2
Reviewed 2026-10-02 · Source date 2019-09.
- S19
Rivers, Streams, & Wetlands ↗
National Park Service, Science of the American Southwest
Supports. Riparian habitats occur along permanent and ephemeral water sources.
Location. Southwest River Environments
Reviewed 2026-10-02 · Source date 2016-10-05.
- S20
National Capital Region Conifers ↗
National Park Service; John Parrish
Supports. Cone-bearing trees and shrubs; needle/scale foliage; some conifers are deciduous.
Location. Introduction
Reviewed 2026-10-02 · Source date not recorded.
Limit. General botanical vocabulary only; eastern species are not represented as Bryce records.
- S21
Quaking Aspen ↗
National Park Service, Bryce Canyon
Supports. Quaking aspen occurs at Bryce and changes leaves seasonally.
Location. General Description
Reviewed 2026-10-02 · Source date 2023-02-01.
Limit. No absolute longevity, immunity, fire survival or conservation assertions are reproduced.
- S22
Genetics and Adaptations Activity Guide ↗
National Park Service, Zion
Supports. Inherited traits and suitability to an environment.
Location. Introduction; Theme
Reviewed 2026-10-02 · Source date not recorded.
- S23
I Didn't Know That!: Biological Soil Crusts ↗
National Park Service
Supports. Crust organisms, particle binding, easily overlooked young crusts and fragility.
Location. What are biological soil crusts?; What do biological soil crusts look like?
Reviewed 2026-10-02 · Source date 2024-12-23.
Limit. Regional relevance only; no site-level Bryce presence or coverage is claimed.
- S24
Food Webs ↗
National Park Service, Teachers
Supports. Connected trophic roles and limits to predicting ecological effects.
Location. Background; Vocabulary
Reviewed 2026-10-02 · Source date 2025-08-08.
- S25
Create Your Own Marine Food Web ↗
National Park Service, Cape Cod
Supports. Producers, consumers and decomposers; nutrient return from decomposing dead matter.
Location. Transcript
Reviewed 2026-10-02 · Source date not recorded.
Limit. General roles are used; marine organisms and local feeding relationships are not transferred to Bryce.
- S26
Fire Ecology ↗
National Park Service, Bryce Canyon
Supports. Post-disturbance community change, surviving roots, regrowth and variable fire effects.
Location. Forest Succession; Adaptations to Fire
Reviewed 2026-10-02 · Source date not recorded.
Limit. No fixed recovery duration or guaranteed succession endpoint is modeled.
- S27
Ponderosa Pine ↗
National Park Service, Bryce Canyon
Supports. Thick bark can protect living tissue during fire.
Location. Plant Lore
Reviewed 2026-10-02 · Source date not recorded.
Limit. Cross-checked with gg-s26; unconditional survival language is not adopted.
- S28
Geologic Timescale, Geologic Dating Techniques, and Numeric Ages ↗
National Park Service
Supports. A formation is a distinctive mappable rock unit and may contain several rock types; unconformities represent gaps.
Location. Glossary: Formation; Unconformity
Reviewed 2026-10-02 · Source date not recorded.
- S29
Types of Arches ↗
National Park Service, Arches
Supports. A natural bridge is a type of arch astride a stream or stream channel; flowing water need not be present year-round.
Location. Natural Bridge
Reviewed 2026-10-02 · Source date 2025-04-29.
- S30
North Carolina Marine Education Manual: Unit Three, Coastal Ecology ↗
UNC Sea Grant College Program; NOAA Institutional Repository
Supports. Energy passes through ecosystems and dissipates as heat; nutrients can cycle.
Location. Energy flow discussion near Figure 6
Reviewed 2026-10-02 · Source date 1978.
Limit. Only the general distinction between energy flow and nutrient cycling is used; no coastal scenario is transferred.
- S31
Topographic Map Explanation, folio 19 ↗
U.S. Geological Survey
Supports. For a fixed elevation difference, a gentle slope requires more horizontal distance than a steep slope.
Location. Explanation of contour spacing
Reviewed 2026-10-02 · Source date not recorded.
Retrieval. Primary USGS indexed text reviewed; arithmetic in the model is independently checked.
- S32
Aquatic food webs ↗
National Oceanic and Atmospheric Administration
Supports. Food-web arrows show energy flow from prey to predator; connected food chains form a web.
Location. What is a food web?
Reviewed 2026-10-02 · Source date not recorded.
Limit. General arrow convention only; model roles are generic, not a Bryce ecological survey.
Rights & reuse
Original BCC educational candidate assets are supplied for parent review and integration. Public-domain status of reference text does not confer rights to every item on its host page. No third-party media was copied; each reference is used for factual support only. No new third-party license or park endorsement is asserted.