Structural data: brittle faults for the Ford Ranges, Marie Byrd Land, Antarctica
Entry ID: Ford_Ranges

[ Get Data ]
[ Update this Record ]

Summary
Abstract: The geological data sets for the Ford Ranges of western Marie Byrd
Land include:
- Structural measurements for minor brittle faults, fracture
arrays, and dike arrays
- 40Ar/39Ar geochronological data for mafic dikes and volcanic
rock samples
- Geochemical analyses (major, trace, and isotope) for Pleistocene
basalts
- Geological map of the Ford Ranges [includes revisions to USGS
maps A-6, A-7, A-11; Wade et al. 1977, 1978]

Data exist for nearly all mountain ranges and nunatak groups in the
Ford Ranges. All data are in Excel Worksheet format.

The geology data were collected during a joint geology/aerogeophysics
program designed to address questions of crustal structure and
tectonic development along the eastern Ross Sea margin. The objective
of the geological field research program, conducted during 1998-99 and
1999-2000, was kinematic analysis of mesoscopic structures, including
brittle faults and dikes, in the ice-covered region where major
structures are concealed. The purpose was to decipher the extensional
history of the region, and address hypotheses about the timing and
character of tectonism in the eastern Ross Sea sector.

Related datasets are reported in
"http://gcmd.nasa.gov/Data/portals/amd/" (Search string: SOAR1999WMB)
"http://depts.washington.edu/cosmolab/data/MBL_exp_ages.html"

Related URL
Link: GET DATA
Description: Cosmogenic 10Be exposure ages of glacial erratics performed by
John Stone, University of Washington


Link: GET DATA
Description: (Search string: SOAR1999WMB)
Aerogeophysical data for 460x360 km2 area


Link: VIEW PROJECT HOME PAGE


Geographic Coverage
 N: -75.0 S: -80.0  E: -135.0  W: -160.0
 Min Altitude: 300 M  Max Altitude: 1200 M

Data Set Citation
Dataset Originator/Creator: Siddoway, Christine Smith
Dataset Title: Fault and fracture data
Data Presentation Form: spreadsheet
Online Resource: http://www.coloradocollege.edu/academics/dept/geology/

Dataset Originator/Creator: Siddoway, Christine Smith
Dataset Title: Geochronological data, 40Ar/39Ar
Online Resource: http://www.coloradocollege.edu/academics/dept/geology/

Dataset Originator/Creator: Siddoway, Christine Smith
Dataset Title: Geological map compilation, Ford Ranges, Marie Byrd Land
Online Resource: http://www.coloradocollege.edu/academics/dept/geology/


Temporal Coverage
Start Date: 1998-11-01
Stop Date: 2002-06-30


Paleo_Temporal_Coverage
Paleo Start Date: 120 MA
Paleo Stop Date: 65 MA
Chrono Unit:


Location Keywords
CONTINENT > ANTARCTICA > MARIE BYRD LAND > FORD RANGES
GEOGRAPHIC REGION > POLAR


Data Resolution
Latitude Resolution: 200 m
Longitude Resolution: 200 m
Vertical Resolution: 20 m


Science Keywords
SOLID EARTH >TECTONICS >PLATE TECTONICS >FAULT MOVEMENT    [Definition]
SOLID EARTH >TECTONICS >NEOTECTONICS    [Definition]
SOLID EARTH >TECTONICS >PLATE TECTONICS >STRAIN    [Definition]
SOLID EARTH >TECTONICS >PLATE TECTONICS    [Definition]
SOLID EARTH >TECTONICS >PLATE TECTONICS >PLATE BOUNDARIES    [Definition]


ISO Topic Category
GEOSCIENTIFIC INFORMATION


Platform
FIELD SURVEYS    [Information]
GROUND-BASED OBSERVATIONS    [Information]


Instrument
COMPASSES    [Information]


Project
USAP >United States Antarctic Program    [Information]
SOAR >Support Office for Aerogeophysical Research    [Information]


Quality
Compass measurements are accurate within +/- 5? of bearing or
inclination. Considerations are the strong variation in magnetic
declination in proximity to the S magnetic pole and working conditions
in the polar climate (element of human error due to high winds and
cold temperatures/bulky clothing).


Access Constraints
Data set preparation and data release anticipated 1/1/2005


Keywords
fault
brittle kinematic analysis
structure
tectonics
Brunton compasses


Data Set Progress
IN WORK


Data Center
Geology Department, Colorado College    [Information]
Data Center URL: http://www.coloradocollege.edu/academics/dept/geology/

Data Center Personnel
Name: CHRISTINE SMITH SIDDOWAY
Phone: 719-389-6717
Phone: 612-625-7332
Fax: 719-389-6910
Email: csiddoway at coloradocollege.edu
Contact Address:
Department of Geology
Colorado College
14 E. Cache la Poudre
City: Colorado Springs
Province or State: CO
Postal Code: 80903
Country: USA


Personnel
CHRISTINE SMITH SIDDOWAY
Role: DIF AUTHOR
Phone: 719-389-6717
Phone: 612-625-7332
Fax: 719-389-6910
Email: csiddoway at coloradocollege.edu
Contact Address:
Department of Geology
Colorado College
14 E. Cache la Poudre
City: Colorado Springs
Province or State: CO
Postal Code: 80903
Country: USA


ANNE LEIGH WHITEHEAD
Role: INVESTIGATOR


LOUIS SASS III
Role: INVESTIGATOR


SETH COWDERY
Role: INVESTIGATOR


Publications/References
Siddoway, C.; Richard, S.; and Fanning, C.M.; in revision, Origin and
emplacement mechanisms for a middle Cretaceous gneiss dome, Fosdick
Mountains, West Antarctica, in Whitney, D., Teyssier, C.T., and
Hodges, K.V., 2003, Gneiss domes and orogeny, GSA Special Paper.

Siddoway, C.; Baldwin, S.; Fitzgerald, P.G., Fanning, C.M.; and
Luyendyk, B.P., 2004, Ross Sea mylonites and the timing of
intracontinental extension within the West Antarctic rift system,
Geology, v. 32, no. 1, p. 57-60.

Luyendyk, B. P., D. Wilson, and C.S. Siddoway, 2003, The eastern
margin of the Ross Sea Rift in western Marie Byrd Land: Crustal
structure and tectonic development: Geochemistry, Geophysics,
Geosystems (G3), v. 4 (10), 1090,
doi:10.1029/2002GC000462. http://www.agu.org/journals/gc/ [Select
"Indexes" then "Volume 4."]

Luyendyk, B.P., Smith Siddoway, C., & Druivenga, G., 2003, Gravity
measurements on King Edward VII Peninsula, Marie Byrd Land, West
Antarctica, during GANOVEX VII: Geologisches Jahrbuch, v. B 95:
101-126.

Siddoway, C.S. 2000, Tectonic evolution of Marie Byrd Land, West
Antarctica: Disassembly of the Mesozoic margin and Cenozoic activity
related to the West Antarctic Rift System [extended abstract]. Global
Tectonic Zones/Special Symposium F6: Active margin of Antarctica; 31st
International Geological Congress, Rio de Janeiro, August 7-16, 4
pages, published on CD-ROM by 31st IGC.

Creation and Review Dates
DIF Creation Date: 2005-10-24
Last DIF Revision Date: 2012-08-23

[ Update this Record ]


Link to Web Site