Geomorphological measurements and lithological classifications of 90 erratic cobbles from the Hudson Mountains, West Antarctica. ...

• Main Authors: Johnson, Joanne, Smith, James
• Format: Dataset
• Language: English
• Published: NERC EDS UK Polar Data Centre 2024
• Subjects: "EARTH SCIENCE","CRYOSPHERE","GLACIERS/ICE SHEETS","GLACIERS"; "EARTH SCIENCE","LAND SURFACE","GEOMORPHIC LANDFORMS/PROCESSES","GLACIAL LANDFORMS"; "EARTH SCIENCE","CRYOSPHERE","GLACIERS/ICE SHEETS"; Hudson Mountains; Pine Island Glacier; West Antarctica; erratic; granite; Antarctic; Hudson; Thwaites Glacier; Antarc*; Antarctica; British Antarctic Survey; Pine Island
• Online Access: https://dx.doi.org/10.5285/79c8eb39-5c19-440e-804f-816cd0b8e4bd; https://data.bas.ac.uk/full-record.php?id=GB/NERC/BAS/PDC/01867

This dataset contains geomorphological data (measurements of size, shape, long axis orientation and weathering characteristics) on 90 erratic cobbles collected from the Hudson Mountains in West Antarctica. These were collected during three field campaigns, as follows: 1) 75 erratic cobbles collected by Joanne S Johnson during a British Antarctic Survey-supported geological field campaign undertaken in November-December 2019, as part of the International Thwaites Glacier Collaboration (funded by NERC and NSF). 2) 13 cobbles collected by James A Smith (British Antarctic Survey) in February and March 2010 during RV Polarstern cruise ANT XXVI/3, and 3) a further two cobbles collected in March 2006 by Johnson during RV Polarstern cruise ANT XXIII/4. These cobbles were all collected for surface exposure dating. Funding: NERC grant: NE/S006710/1 ... : The erratics described in the dataset were originally collected for cosmogenic nuclide surface exposure dating, during 3 different field campaigns: in 2006 on a geological campaign undertaken during cruise ANT XXIII/4 of RV Polarstern for the BAS GRADES-QWAD project, in 2010 on a geological campaign undertaken during cruise ANT XXVI/3 of RV Polarstern, and in 2019-20 on a geological campaign supported by British Antarctic survey logistics as part of the Geological History Constraints project (one of the component projects of the International Thwaites Glacier Collaboration). The data here pertain to their location, size, shape, orientation, degree of weathering and lithology. Locations (latitude, longitude and altitude, m above sea level) were measured using GPS (details for each season are provided in point 7 below). The size of each erratic was measured in the field using a standard ruler. Three axes were measured: short, intermediate and long, and their lengths recorded in centimetres. The shape (degree ...