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Research Tip
Use the "site:__" command to limit your searches to specific types of websites. For instance, searching for "volcano site:edu" will limit the results to educational websites.
Interested in finding out which geology journals are available through the NWACC Library? Use the Journals A-Z service to find out. Search by subject or publication title.
Geology eBooks Available from eBook Collection
Geology Topics overview from Gale Virtual Reference Library
In case if any of these links do not open when accessed off campus, please write to library@nwacc.edu for assistance.
Ever wondered what the differences are between magazines and journals?
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Primary sources are original documents, objects, or media created during the time of the event being researched, or by an individual(s) who directly experienced an event, made a discovery, or created a new work of art. They are raw materials with a direct relationship to whatever is being studied.
Examples: photographs, speeches, diaries, editorials, letters, interviews, historic artifacts, works of art, musical scores, performances, literary works, survey research, legal documents, proceedings, patents, video or audio recordings of events being studied, etc.
Secondary sources are a step removed from the original source. They may comment or build upon original primary sources.
Examples: second-hand reports on events, research, or works created by someone else at a different time or place; criticisms; reviews; interpretations; citations; etc.
Tertiary sources typically compile and condense a range of primary and/or secondary sources into an easily-digestible format.
Examples: encyclopedias, almanacs, timelines, bibliographies, directories, fact books, etc. (Note: Many of these are also considered secondary sources.)
Across disciplines, contexts, and perspectives, the definition of primary, secondary, and tertiary sources differ. Some scholars consider encyclopedias secondary sources, while others consider them tertiary sources. In today’s environment of digitized content, most would contend an online image of a primary document or transcript is sufficient, while others might argue the original physical copy is essential for primary research. Like many areas of study, distinctions are fuzzy and subject to interpretation. When in doubt, clarify your instructor’s expectations.
