THE MARINE TERRACES OF SANTA CRUZ ISLAND, CALIFORNIA: IMPLICATIONS FOR GLACIAL ISOSTATIC ADJUSTMENT MODELS OF LAST-INTERGLACIAL SEA-LEVEL HISTORY

Abstract Glacial isostatic adjustment (GIA) models hypothesize that along coastal California, last interglacial (LIG, broadly from ~130 to ~115 ka) sea level could have been as high as +11 m to +13 m, relative to present, substantially higher than the commonly estimated elevation of +6 m. Areas with low uplift rates can test whether such models are valid. Marine terraces on Santa Cruz Island have previously been reported to occur at low (