CACrown ArchivesThe cinema collection
Menu
Research dossier · General Reference

Dittmar Volcano

extinct stratovolcano in Shasta, Plumas counties, California

Cross-disciplinary reference desk with index cards, atlas, dictionary and catalogue
General referenceInterpretive dossier study · Crown Archives visual atlas
Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionAug 9, 2025
Entity authorityQ130235801 ↗
Source-derived summary

Dittmar Volcano, located on the border of Shasta, Lassen, and Tehama counties in California, is an extinct stratovolcano in the Cascade Range.

Geography

The Dittmar Volcano is located east of Mount Tehama, southeast of Lassen Peak, northeast of Mount Maidu and Mount Yana, northwest of Lake Almanor and Mount Harkness, and southwest of the Caribou volcanic field.

Geology

Dittmar Volcano is one of the older volcanoes that surround the modern-day Lassen Peak. It does not have much of its original shape, but it has a smaller, more recent stratovolcano and shield volcano, Mount Harkness.

Editorial summary

“Dittmar Volcano” enters the record as extinct stratovolcano in Shasta, Plumas counties, California. Crown Archives preserves that source wording while asking what Dittmar, Volcano and extinct can confirm, complicate or overturn.

Editorial reviewA dependable orientation record for establishing vocabulary, names and a first evidence trail. The current 94-word lead offers orientation but no explicit four-digit date, so chronology should not be assumed. The selected authority fields contribute no independent date. Its strongest next move is a source search built around Dittmar, Volcano and extinct.
Editorial analysis

Why this record matters

“Dittmar Volcano” is worth following because a concise public description often conceals a longer documentary argument. Here, Dittmar, Volcano and extinct provides the most credible route into that argument.

Evidence profile

Vocabulary and entity names are the principal evidence signals here, because they determine the precision of every later search. The source revision retrieved here is dated Aug 9, 2025. The linked authority identifier is Q130235801. Authority coordinates are 40.453, -121.347. None of the 1 selected statements returned an explicit reference.

Critical limits

A concise general-reference account can conceal disagreements about scope, terminology or the weight assigned to individual sources. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.

How to read it

Use the entry as an orientation point, then follow its citations and revision history. Names, dates and institutional relationships should be checked against the original record.

Best used for
  • Subject orientation
  • Search vocabulary
  • Locating named sources
Verify next

The closest primary source, responsible institution and strongest cited specialist reference.

Three-step research path

  1. Establish the record: confirm the title “Dittmar Volcano”, its source revision and the description used here.
  2. Expand the search: follow Dittmar Volcano primary sources, Dittmar Volcano archive and Dittmar research across catalogues and specialist indexes.
  3. Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.

Questions for further research

  1. Which source most directly establishes the central claim about “Dittmar Volcano”?
  2. Which institution is responsible for the underlying evidence?
  3. What terminology or title could unlock a more precise catalogue search?
Subject index

Search terms from this dossier

Source & attribution

This entry incorporates text from “Dittmar Volcano” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.