IODP Expedition 340: Lesser Antilles Volcanism and Landslides Site U1399 Summary
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چکیده
Integrated Ocean Drilling Program (IODP) Site U1399 (CARI-08B, 14°23.24’N, 61°42.69’W, 2900 mbsl) is located west of Martinique. The objective of Site U1399 is to characterize the processes accompanying debris avalanche emplacement and associated erosion. The seismic and bathymetric survey for Site U1399 revealed that this site is located on one of the main chaotic deposits and that coring at this site will most likely retrieve volcanic and biogenic sediments with intercalated, large, chaotic debris avalanche deposits of the so called debris avalanche deposit 1. In detail, we hope to be able to characterize and quantify the erosional processes of the upper sedimentary layers deposited in the Grenada Basin associated with such debris avalanches and their subsequent incorporation into the flow. Finally, we are going to compare the characteristics of debris avalanches deposits from Dominica and Martinique to constrain possible differences in erosional capability and mobility. The sediments above the debris avalanche deposit 1 will be used to better constrain the age of the slide event.
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IODP Expedition 340: Lesser Antilles Volcanism and Landslides Site U1395 Summary Background and Objectives Integrated Ocean Drilling Program (IODP) Site U1395 (CARI-04D, 16°29.60’N;
The objective of Site U1395 is to characterize the sedimentation processes related to volcanic activity in the Boullante–Montserrat half graben. It is planned to drill through hemi-pelagic sediments, turbidites, and tephra retrieving a complete record of sediment down to a depth of ~244 m. Work around the Canary Islands has shown that distal volcaniclastic turbidites generated by collapse event...
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Integrated Ocean Drilling Program (IODP) Site U1398 (CARI-09B, 14°16.70’N, 61°53.34’W, 2935 mbsl) is located west of Martinique. The objective of this site is to characterize the sedimentation processes (related to volcanic activity or not) in the backarc Grenada Basin. It is planned to drill through hemipelagic sediments and turbidites and retrieve a complete sedimentation record down to a dep...
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Integrated Ocean Drilling Program Site U1400 (CARI-07C, 14°32.58’N, 61°27.55’W, 2745 m below seafloor) is located west of Martinique. Site U1400 was dedicated to the study of debris avalanche emplacement and associated erosional processes. The evolution of the active Montagne Pelée volcano on Martinique is characterized by three major flank collapse events (~0.1 Ma, ~25 ka, and ~9,000 years ago...
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