Sampling and data-sharing policy

Shipboard samples and data acquisition

Following core labeling, nondestructive whole-core measurements, and core splitting, samples will be selected from the working halves of cores by members of the shipboard party for routine measurement of physical and magnetic properties and bulk chemical and mineralogical analyses by, as needed, inductively coupled plasma–atomic emission spectrometry and X-ray diffraction spectrometry. Thin sections of samples will be prepared for identification of minerals, determination of mineral modes (by point counting), and studies of texture and fabric. Detailed visual core description will be conducted on the archive halves.

Personal sampling for shore-based research

Shipboard and shore-based researchers should refer to the IODP Sample, Data, and Obligations Policy ( This document outlines the policy for distributing IODP samples and data. It also defines the obligations incurred by sample and data recipients. All requests for data and core samples must be approved by the Sample Allocation Committee (SAC). The SAC is composed of Co-Chief Scientists, Staff Scientist, and IODP Curator on shore and curatorial representative in place of the Curator on board ship.

Scientists must submit their research plans using the Sample/Data Request form ( no later than 3 months before the expedition. This planning process is necessary to coordinate the research to be conducted and to ensure that the scientific objectives are achieved. Based on the sample requests (shore based and shipboard), the SAC and Shipboard Scientific Party will formulate a tentative expedition-specific sampling and data-sharing plan for shipboard and postexpedition activities. This plan will be subject to modification depending upon the actual material recovered and collaborations that may evolve between scientists during the expedition. Modifications to the sampling plan during the expedition require the approval of the SAC.

All personal sample frequencies and sizes must be justified scientifically and will depend on core recovery, the full spectrum of other sample requests, and the cruise objectives. Generally, the size of individual samples will be <15–25 cm3 and will be taken from the working halves of the core. Some redundancy of measurements is unavoidable, but minimizing the duplication of measurements among the shipboard party and identified shore-based collaborators will be a factor in evaluating sample requests. All shipboard scientists and approved shore-based requesters will be expected to collaborate and cooperate within the framework of this plan.

Personal sampling will take place on board during the expedition. If critical intervals are recovered (e.g., small sills or dikes, veins, ores, erosion horizons, beach pebbles, fresh glasses, or ash layers), there may be considerable demand for samples from a limited amount of cored material. These intervals may require modifications to the sampling plan (e.g., special handling, reduced sample size, or deferring of sampling to postcruise).

Following Expedition 324, cores will be delivered to the IODP Gulf Coast Core Repository at Texas A&M University, College Station (USA). All collected data and samples will be protected by a 1 y postcruise moratorium, during which time data and samples are available only to the Shatsky Rise expedition science party and approved shore-based participants.