Image source: Lava flow, Hawaii. Brocken Inaglory. Wikimedia Commons. CC BY-SA 3.0.
Scholarly journals publish research articles; they are intended mostly for scholars and researchers.
They are the best source of information for college-level research.
Image Source: House buried in lava. Hajotthu. GNU Free. Wikimedia Commons.
You'll find scholarly journal articles in subject-specific library databases. On the library's homepage, you'll see a blue search box. Click on the Articles and Databases tab. Select the most appropriate subject that encompasses your topic to find the best database.