(Table 2) Composition of siderites from DSDP Holes 70-506G and 70-507B
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Sample 506 (1-23) is a hyalopilitic, fine-grained, highly vesicular basalt with rare plagioclase and clinopyroxene phenocrysts. It shows a 2-2.5-mm-wide black halo. Sample 507 (24) is a coarse-grained slightly vesicular, subophitic basalt. The sample has no black halo and appears to be completely fresh.
创建时间：
2025-11-10
