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Geoscience Letters

Official Journal of the Asia Oceania Geosciences Society (AOGS)

Fig. 2 | Geoscience Letters

Fig. 2

From: Occurrence of 1 ka-old corals on an uplifted reef terrace in west Luzon, Philippines: Implications for a prehistoric extreme wave event in the South China Sea region

Fig. 2

Geomorphic features in Badoc Island. a Emergent Holocene terraces and fringing reefs surround the island. Numbers indicate varied elevations of the lowest terrace, in which higher T1 surfaces are observed to the northwest. The island is inferred to be slightly tilted to the southeast based on variable T1 elevations. b At one site to the north, possibly three Holocene terrace surfaces were recognized and these rise up to about 5 m amsl. Elevations (meters above mean sea level, m amsl) and 230Th ages (relative to 1950 AD, years BP) of fossil corals collected are shown in white and yellow, respectively. Highest reef platforms at about 20-28 (possibly rising up to ~35) m amsl are inferred to represent the Late Pleistocene terraces (LPT). c Topographic profile at the survey site showing the measured elevations of the terraces and inner edge, when observed. Mean sea level (MSL) (blue dashed line) is 0.24 m and is derived from actual tide data of NAMRIA

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