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Borehole Breakout Analysis And Physical Properties Of Costa Rica Convergent Margin Sediments: Integrated Ocean Drilling Program (Iodp) Expedition 334, Gil Young Kim, Buyanbat Narantsetseg
Borehole Breakout Analysis And Physical Properties Of Costa Rica Convergent Margin Sediments: Integrated Ocean Drilling Program (Iodp) Expedition 334, Gil Young Kim, Buyanbat Narantsetseg
Journal of Marine Science and Technology
Borehole image and physical properties data from two sites (U1378, U1379) drilled during the Integrated Ocean Drilling Program (IODP) Expedition 334 were analyzed to study the effect of erosional subduction at the Costa Rica convergent margin. The various laboratory and log data were collected from Logging-While-Drilling (LWD), moisture and density analysis (MAD), and Multisensor Core Logger tools (MSCL). Borehole breakouts interpreted from image data acquired from LWD were identified and analyzed using GMI Imager software. In this study, borehole breakouts from holes U1378A and U1379A showed different borehole shape and stress directions, indicating different present-day in situ stress orientation at …