https://e-sygoing.link Latest links in the Igneous Petrology category en-us Wed, 10 Jun 2026 07:16:49 -0400 https://e-sygoing.link/link/5295388-geokem Online publication with brief descriptions of most types of terrestrial and lunar igneous rocks, their regional distribution and classification, and examples of their geochemical trends and "fingerprints". Sat, 30 Nov 2024 18:26:09 -0500 https://e-sygoing.link/go/5295388 https://e-sygoing.link/link/5295386-northwest-obsidian-research-lab Offers a variety of analytical services related to obsidian trace element characterization ("sourcing") studies, obsidian hydration studies, and obsidian source studies, primarily in the context of archaeological research. Sun, 21 Apr 2024 18:31:26 -0400 https://e-sygoing.link/go/5295386