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doi:10.2204/iodp.proc.340.204.2016 SummaryThe past 1 My of Montserrat’s offshore stratigraphy comprises a series of turbidites and tephra fall units that are interleaved with hemipelagic mud. Tephra fall deposits are associated with eruptive activity at Montserrat, although some tephra fall deposits found at Sites U1394, U1395, and U1396 are likely to be from Guadeloupe. Volcaniclastic turbidites may originate from eruptive activity, such as when pyroclastic density currents enter the sea, or alternatively could form from flank collapses at Montserrat. Bioclastic and mixed turbidites are likely to be associated with flank collapse or carbonate shelf collapse events from Montserrat. Holes U1394B, U1395B, and U1396C show that tephra fall and turbidite occurrence is not evenly distributed through time. Within the holes clusters of turbidites and tephra layers are seen. Thicknesses of turbidites also vary through time. |
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