Soil Data Explorer - THEON

Official Series Description

Lab Data Summary

Aggregate lab data for the THEON soil series. This aggregation is based on all pedons with a current taxon name of THEON, and applied along 1-cm thick depth slices. Solid lines are the slice-wise median, bounded on either side by the interval defined by the slice-wise 5th and 95th percentiles. The median is the value that splits the data in half. Five percent of the data are less than the 5th percentile, and five percent of the data are greater than the 95th percentile. Values along the right hand side y-axis describe the proportion of pedon data that contribute to aggregate values at this depth. For example, a value of "90%" at 25cm means that 90% of the pedons correlated to THEON were used in the calculation. Source: KSSL snapshot (updated 2020-03-18). Methods used to assemble the KSSL snapshot used by SoilWeb / SDE

Pedons used in the lab summary:

MLRA	Lab ID	Pedon ID	Taxonname	CI	NSSL / NASIS Reports	Link To SoilWeb GMap
27	08N0489	2008NV001002	Theon	7	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	39.08725,-118.6955278

Water Balance

Monthly water balance estimated using a leaky-bucket style model for the THEON soil series. Monthly precipitation (PPT) and potential evapotranspiration (PET) have been estimated from the 50th percentile of gridded values (PRISM 1981-2010) overlapping with the extent of SSURGO map units containing each series as a major component. Monthly PET values were estimated using the method of Thornthwaite (1948). These (and other) climatic parameters are calculated with each SSURGO refresh and provided by the fetchOSD function of the soilDB package. Representative water storage values (“AWC” in the figures) were derived from SSURGO by taking the 50th percentile of profile-total water storage (sum[awc_r * horizon thickness]) for each soil series. Note that this representation of “water storage” is based on the average ability of most plants to extract soil water between 15 bar (“permanent wilting point”) and 1/3 bar (“field capacity”) matric potential. Soil moisture state can be roughly interpreted as “dry” when storage is depleted, “moist” when storage is between 0mm and AWC, and “wet” when there is a surplus. Clearly there are a lot of assumptions baked into this kind of monthly water balance. This is still a work in progress.

Sibling Summary

Siblings are those soil series that occur together in map units, in this case with the THEON series. Sketches are arranged according to their subgroup-level taxonomic structure. Source: SSURGO snapshot (updated 2024-02-21), parsed OSD records (updated 2023-10-06) and snapshot of SC database (updated 2023-10-02).

Select annual climate data summaries for the THEON series and siblings. Series are sorted according to hierarchical clustering of median values. Source: SSURGO map unit geometry and 1981-2010, 800m PRISM data (updated 2023-10-09).

Geomorphic description summaries for the THEON series and siblings. Series are sorted according to hierarchical clustering of proportions and relative hydrologic position within an idealized landform (e.g. top to bottom). Most soil series (SSURGO components) are associated with a hillslope position and one or more landform-specific positions: hills, mountain slopes, terraces, and/or flats. Proportions can be interpreted as an aggregate representation of geomorphic membership. The values printed to the left (number of component records) and right (Shannon entropy) of stacked bars can be used to judge the reliability of trends. Small Shannon entropy values suggest relatively consistent geomorphic association, while larger values suggest lack thereof. Source: SSURGO component records (updated 2023-10-04).

Competing Series

Soil series competing with THEON share the same family level classification in Soil Taxonomy. Source: parsed OSD records (updated 2023-10-06) and snapshot of the SC database (updated 2023-10-02).

Select annual climate data summaries for the THEON series and competing. Series are sorted according to hierarchical clustering of median values. Source: SSURGO map unit geometry and 1981-2010, 800m PRISM data (updated 2023-10-09).

Geomorphic description summaries for the THEON series and competing. Series are sorted according to hierarchical clustering of proportions and relative hydrologic position within an idealized landform (e.g. top to bottom). Proportions can be interpreted as an aggregate representation of geomorphic membership. Most soil series (SSURGO components) are associated with a hillslope position and one or more landform-specific positions: hills, mountain slopes, terraces, and/or flats. The values printed to the left (number of component records) and right (Shannon entropy) of stacked bars can be used to judge the reliability of trends. Shannon entropy values close to 0 represent soil series with relatively consistent geomorphic association, while values close to 1 suggest lack thereof. Source: SSURGO component records (updated 2023-10-04).

There are insufficient data to create the 3D terrace figure.

There are insufficient data to create the 3D flats position figure.

Soil series sharing subgroup-level classification with THEON, arranged according to family differentiae. Hovering over a series name will print full classification and a small sketch from the OSD. Source: snapshot of SC database (updated 2023-10-02).

Block Diagrams

Click a link below to display the diagram. Note that these diagrams may be from multiple survey areas.

1. NV-2012-05-09-21 | Pershing County, East Part - May 1994

   General soil map units representative of those on a semibolson that is an externally drained intermontane basin. These units are 4—Humboldt-Sonoma-Sondoa; 6—Jerval-Dun Glen-Tenabo; 7—Chiara-Cortez-Orovada; 8—Jerval-Misad-Knoss; 9—Theon-Singatse; 10—Trunk-Burrita-Hoot; and 11—Reluctan-Roca-Iver (Soil Survey of Pershing County, Nevada, East Part; May 1994).

Map Units

Map units containing THEON as a major component. Limited to 250 records.

Map Unit Name	Symbol	Map Unit Area (ac)	Map Unit Key	National Map Unit Symbol	Soil Survey Area	Publication Date	Map Scale
Theon-Singatse association	1051	26	2439163	2tfnh	nv602	1985	1:24000
Pirouette-Theon-Weena association	7004	10871	2427738	2mh84	nv603	1971	1:24000
Piroutte-Theon association	7061	5578	2427777	2mh9d	nv603	1971	1:24000
Pirouette-Theon-Celeton association	7039	5045	2427765	2mh90	nv603	1971	1:24000
Theon-Singatse-Weena association	7036	3701	2427762	2mh8x	nv603	1971	1:24000
Theon-Ceejay-Rock outcrop association	7008	962	2427737	2mh83	nv603	1971	1:24000
Theon-Ceejay-Weena association	7037	437	2427763	2mh8y	nv603	1971	1:24000
Theon very gravelly sandy loam, 8 to 30 percent slopes	241	102	2399538	2v42f	nv603	1971	1:24000
Theon very gravelly sandy loam, 8 to 30 percent slopes	651	63486	474024	2v42f	nv625	1981	1:24000
Theon-Olac association	652	41309	474025	2w36l	nv625	1981	1:24000
Theon-Rock outcrop-Old Camp, 50 to 75 percent slopes	654	19886	474027	hx86	nv625	1981	1:24000
Singatse-Theon association	633	16921	474019	hx7y	nv625	1981	1:24000
Theon-Lapon-Olac association	653	16809	474026	hx85	nv625	1981	1:24000
Theon-Singatse-Hawsley association	7202	5130	2425580	2tfnl	nv625	1981	1:24000
Piroutte-Theon-Weena association	7004	4991	2425550	2mdzk	nv625	1981	1:24000
Theon-Ceejay-Weena association	7037	4356	2452819	2nbc6	nv625	1981	1:24000
Theon-Singatse-Rock outcrop association	7005	2600	2425530	2tfn8	nv625	1981	1:24000
Theon-Singatse-Weena association	7036	1899	2452818	2nbc5	nv625	1981	1:24000
Theon-Yerington association	655	1205	474028	hx87	nv625	1981	1:24000
Pirouette-Theon-Celeton association	7039	793	2452821	2nbc8	nv625	1981	1:24000
Theon-Singatse association	1606	1825	474449	2tfnh	nv628	1980	1:24000
Pirouette-Theon-Weena association	7004	50	2452474	2nb02	nv628	1980	1:24000
Theon-Singatse association	1051	46652	476217	2tfnh	nv761	1988	1:24000
Theon-Old Camp association, cobbly	1055	32591	476222	hzk0	nv761	1988	1:24000
Theon-Grumblen-Rubble land association	1052	31357	476218	hzjw	nv761	1988	1:24000
Theon-Pickup association	1056	24435	476223	hzk1	nv761	1988	1:24000
Pickup-Old Camp-Theon association	752	7478	476350	hzp4	nv761	1988	1:24000
Theon-Rock outcrop association	1053	2527	476219	hzjx	nv761	1988	1:24000
Theon-Old Camp association	1054	2169	476221	2tfnk	nv761	1988	1:24000
Theon-Singatse association, cobbly	1050	1939	476216	hzjt	nv761	1988	1:24000
Theon-Singatse association	191	31028	475240	2tfnh	nv769	1986	1:24000
Theon-Singatse-Rock outcrop association	190	25355	475239	2tfn8	nv769	1986	1:24000
Theon-Singatse-Rock outcrop association	191	82575	476476	2tfn8	nv770	1995	1:24000
Singatse-Theon-Rezave association	162	27528	476457	hzsl	nv770	1995	1:24000
Theon-Mirkwood-Rock outcrop association	193	21096	476478	hzt8	nv770	1995	1:24000
Theon-Old Camp association	190	16029	476475	2tfnk	nv770	1995	1:24000
Piroutte-Theon-Weena association	7004	14967	2229396	2dtw0	nv770	1995	1:24000
Hooplite-Theon-Old Camp association	730	12395	476654	hzzy	nv770	1995	1:24000
Theon association	1102	11831	476403	2tfnq	nv770	1995	1:24000
Hawsley-Theon-Pirouette association	144	7337	476442	hzs3	nv770	1995	1:24000
Pirouette-Theon association	7061	6014	2452500	2nb0x	nv770	1995	1:24000
Olac-Theon-Pirouette association	1061	4154	476394	hzqk	nv770	1995	1:24000
Pirouette-Theon-Rubble land association	208	3951	476492	hztq	nv770	1995	1:24000
Theon-Hooplite-Singatse association	194	3717	476479	hzt9	nv770	1995	1:24000
Theon-Roic-Singatse association	1104	3591	476404	hzqw	nv770	1995	1:24000
Theon-Olac-Singatse association	199	3516	476484	hztg	nv770	1995	1:24000
Theon-Olac association	1100	2548	476401	2w36l	nv770	1995	1:24000
Hooplite-Theon-Puett association	734	2397	476658	j002	nv770	1995	1:24000
Theon association, steep	1101	2074	476402	hzqt	nv770	1995	1:24000
Theon very gravelly sandy loam, 8 to 30 percent slopes	192	1605	476477	2v42f	nv770	1995	1:24000
Theon-Trocken-Singatse association	1373	7195	477355	j0qk	nv771	1990	1:24000
Old Camp-Reywat-Theon association	258	7148	477433	j0t2	nv771	1990	1:24000
Jaybee-Theon-Singatse association	1320	6762	477342	j0q4	nv771	1990	1:24000
Theon-Jaybee association	1370	3954	477353	j0qh	nv771	1990	1:24000
Rezave-Theon association	441	2631	477487	j0vt	nv771	1990	1:24000
Theon-Old Camp association	1372	2112	477354	2tfnk	nv771	1990	1:24000
Theon-Ceejay-Rock outcrop association	7008	3680	2452467	2n9zv	nv772	1985	1:24000
Theon-Old Camp association	213	2660	479359	2tfnk	nv772	1985	1:24000
Theon very gravelly loam, 15 to 50 percent slopes	912	2675	644193	pmbf	nv773	1981	1:24000
Theon very gravelly sandy loam, 8 to 30 percent slopes	911	524	644192	2v42f	nv773	1981	1:24000
Theon-Singatse-Rock outcrop association	7005	32561	2425531	2tfn8	nv774	1985	1:24000
Theon-Singatse-Hawsley association	7202	8835	2425607	2tfnl	nv774	1985	1:24000
Theon-Old Camp association	1121	7362	476712	2tfnk	nv774	1985	1:24000
Singatse-Theon- Rock outcrop association	1090	5331	476709	2xdmq	nv774	1985	1:24000
Downeyville-Theon-Nemico association	7074	1406	2425589	2mf0t	nv774	1985	1:24000
Theon very gravelly sandy loam, 8 to 30 percent slopes	1127	159	476713	2v42f	nv774	1985	1:24000
Theon very cobbly loam, 15 to 50 percent slopes	1110	179	475408	hypr	nv777	1993	1:24000
Singatse-Theon- Rock outcrop association	1071	1185	480675	2xdmq	nv781	1994	1:24000
Hooplite-Theon-Old Camp association	1790	128	480811	j4b1	nv781	1994	1:24000
Checkett-Theon families association, 2 to 40 percent slopes	11	84285	3183835	2whr3	ut617		1:24000
Theon family-Rock outcrop complex, 3 to 40 percent slopes	81	12819	3183910	2x4h8	ut617		1:24000

Map of Series Extent

Approximate geographic distribution of the THEON soil series. To learn more about how this distribution was mapped, or to compare this soil series extent to others, use the Series Extent Explorer (SEE) application. Source: generalization of SSURGO geometry (updated 2023-10-04).