Table of Contents
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Core Description area on the Core Deck.
Overview
A description of each core recovered on the JR is among the primary deliverables of the shipboard science party. Core describers are also responsible for other tasks related to description, including instrument measurements, sampling of core sections, and general core handling. The core description team typically includes 5-10 scientists, and up to 15 have sailed on expedition with ambitious description objectives. Depending on the types of sediments or rocks cored, the scientists involved in core description may include sedimentologists, petrologists, or structural geologists. The main duties includematerials expected, specialists in sedimentology, igneous petrology, metamorphic petrology, volcanology and/or structural geology may be included.
Tasks that core describers are fully responsible for, or may be assisting technical staff with:
- Section half preparation
- Whole-round and section half imaging
- Measurement of diffuse color reflectance and magnetic susceptibility
- Macroscopic description of section halves, including structural measurements as appropriate
- Microscopic description of
- Macroscopic visual description of split cores
- Microscopic observations from smear slides and thin sections
- Description and measurement of deformational structures
- Preliminary interpretation of depositional, diagenetic, or deformational processes
- Selection of samples for shipboard analyses
- Acquisition of data with split-core tracks, including digital images, diffuse color reflectance, and magnetic susceptibility
DESClogik core and fossil description application
- SEM and/or EDS measurements
- Sampling for shipboard analyses
- XRD interpretations
- Writing the lithostratigraphy and related sections for the site chapters (Proceedings), site summaries and preliminary report, including a descriptive summary of all observations, preliminary interpretations, and suitable illustrations.
Section half preparation
- Thin Section Report Builder
- Core description resources (link to shorebased Google docs)
- DESClogik Frequently Asked Questions
- DESClogik Micropaleontology Quick Start Guide
- DESClogik Quick Start Guide
- DESClogik Ship and Shore Data SOP
- DESClogik asset cleanup instructions
- Value List Builder Macro: User Guide
- Thin Section Report Builder
- DESClogik User Guide for Technicians
Video Tutorials (Windows Media Player)
- Sample Master: How to Enter Smear Slides
- Sample Master: How to Enter Paleo Samples
- DESClogik 101: Core Describers
- DESClogik 101: Paleontology
- DESClogik 102: Cancel vs. Clear
- DESClogik 103: Special Functions
- DESClogik 104: LIVE
Section Half Imaging Logger (SHIL)
Section Half Multisensor Logger (SHMSL)
Scanning Electron Microscope (SEM)
- Hitachi SEM User Guide (no longer in use) (no longer in use)
- Hitachi SEM Quick Start Guide (no longer in use) (no longer in use)