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Earth, Planets and Space
Figure 2 | Earth, Planets and Space

Figure 2

From: Frictional properties of sediments entering the Costa Rica subduction zone offshore the Osa Peninsula: implications for fault slip in shallow subduction zones

Figure 2

XRD analysis and smear slide observation of the experimental samples. XRD patterns of the tested samples and representative smear slide pictures of the samples. (a) Clay and silty clay. (b) Volcanic glass. (c) Silicic to calcareous ooze. Q, quartz; Pl, plagioclase; C, calcite; H, halite; Py, pyrite; clay, clay minerals.

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