Overview

One of the primary roles for a shipboard paleontologist is to provide age control for the recovered material. Paleontologists are responsible for collecting one ~5 cm whole round sample from the core catcher at the base of the core for micropaleontology. This sample will be subsampled for each microfossil group; any remaining material is bagged and available to request for personal sampling. Additional samples are sometimes taken from split cores to refine the biostratigraphy. Toothpick samples to make smear slides may be taken from the archive or working half, whereas larger samples for foraminifer, radiolarian, and palynological processing must be included in the shipboard sampling plan and are taken from the working halves. Paleontologists typically document biostratigraphically useful taxa, preservation, and additional assemblage information (typically for paleoenvironmental interpretation) as time permits. Data are entered into our data capture system (DESClogik – GEODESC– see below).

Paleontology Preparation Lab

DESClogik

GEODESC

You will be using GEODESC applications for describing micropaleontological samples. If you are new to GEODESC, you may want to read this introductory document first:

• GEODESC overview

You have three browser-based GEODESC applications at your disposal (on shore, simply remove the .ship from the link!):

• Template Manager: http://web.ship.iodp.tamu.edu/TemplateManager/
• Data Capture: http://web.ship.iodp.tamu.edu/DataCapture/
• Data Access: http://web.ship.iodp.tamu.edu/DataAccess/

These applications have help buttons at the right top of their user interfaces, which link to the relevant sections in the user guides. You can also access the user guides directly:

• GEODESC Template Manager
• GEODESC Data Capture
• GEODESC Data Access

These main user guides have embedded links to each other and, in particular, to the GEODESC glossary where general terms and concepts are explained.

Primary Equipment

• Sinks
• Oven
• Sieves
• Fume and canopy hoods (one for HF acid)
• Two Eppendorf 5804/5810 Multipurpose Centrifuges

Chemicals

• See all chemicals used in shipboard labs.
• Guidelines for use of Hydrofluoric (HF) on the JOIDES Resolution (pdf)
• Illustrated Palynology guide with steps for processing samples with HF - Expedition 379

Microscopy

• See the Microscopy Lab for details, including
  • Sample Preparation
  • Sample Imaging
  • Scanning Electron Microscopy (SEM)

Protocols for Using Hydrofluoric

(HF) Acid 

• Flow Chart for using HF onboard JOIDES Resolution
• IODP Shipboard Laboratory Safety Policy (see Attachment 9)
• Guidelines for use of HF on the JR (LWG 2018) 
• Supply checklist (no qty) 
• Expedition specific folder, Specific HF Usage (contains written request/detailed methods/report/neutralization)
• /wiki/spaces/LN/pages/7338171753 (link and only available on the ship)