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Fig. 1 | Journal of Palaeogeography

Fig. 1

From: Identification of hydrovolcanism and its significance for hydrocarbon reservoir assessment: A review

Fig. 1

Texture characteristics of volcanic rocks applied to identify hydrovolcanism. a Perlitic texture and porphyritic texture (cross-polarized light), the Yingcheng Formation in the Santai Area, Songliao Basin (Shan et al. 2007); b Bread-crusted structure in pyroclasts particles (Sample JY–11–05, SEM), Quaternary, the Nanlongwan Volcano, Jilin Province (Yu 2012); c Contact relationship between lapilli-bearing quenching hyaloclastite and vesicular clasts (Soriano et al. 2013); d Blocky volcanic scoria with well-developed tube-shaped vesicle (Sample JY–11–05, SEM), Quaternary, the Nanlongwan Volcano, Jilin Province (Yu 2012); e Back-scattered electron image of welded Vandever Mountain tuff formed from subaqueous explosive eruption. Q−Quartz crystals (black); F−Feldspar crystals; L−Lithic fragments (Kokelaar and Busby 1992)

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