Thematic mapper study of Alaskan ophiolites
The combinations of Thematic Mapper (TM) bands that best distinguish basalts of the Brooks Range ophiolites were determined. Geochemical analyses, including major, trace, and rare earth elements (REE), are being done in order to study the significance of TM spectral variations that were observed wit...
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ftnasantrs:oai:casi.ntrs.nasa.gov:19870002602 2023-05-15T15:46:53+02:00 Thematic mapper study of Alaskan ophiolites Bird, J. M. Unclassified, Unlimited, Publicly available JAN 1, 1986 application/pdf http://hdl.handle.net/2060/19870002602 unknown Document ID: 19870002602 Accession ID: 87N12035 http://hdl.handle.net/2060/19870002602 No Copyright CASI EARTH RESOURCES AND REMOTE SENSING NASA-CR-179728 NAS 1.26:179728 1986 ftnasantrs 2019-07-21T09:33:36Z The combinations of Thematic Mapper (TM) bands that best distinguish basalts of the Brooks Range ophiolites were determined. Geochemical analyses, including major, trace, and rare earth elements (REE), are being done in order to study the significance of TM spectral variations that were observed within some of the sampled rock units. An image of the topography of the western Brooks Range and Colville Basin was constructed. Elevation data for the rest of Northern Alaska are being acquired to expand the area covered by the topography image. Two balanced cross sections (one along the eastern margin, the other along the western margin of the Brooks Range) are being constructed, using the techniques of fault-bend and fault-propagation folding. These are being used to obtain regional shortening estimates for the Brooks Range in an attempt to constrain tectonic models for the evolution of Northern Alaska. The TM data are being used to confirm reconnaissance maps and to obtain structural data where no maps exist. Along with the TM data, digital topography, seismic reflection profiles, and magnetic and gravity surveys are examined to better understand the evolution of the Colville Basin, north of the Brooks Range. Other/Unknown Material Brooks Range Alaska NASA Technical Reports Server (NTRS) |
institution |
Open Polar |
collection |
NASA Technical Reports Server (NTRS) |
op_collection_id |
ftnasantrs |
language |
unknown |
topic |
EARTH RESOURCES AND REMOTE SENSING |
spellingShingle |
EARTH RESOURCES AND REMOTE SENSING Bird, J. M. Thematic mapper study of Alaskan ophiolites |
topic_facet |
EARTH RESOURCES AND REMOTE SENSING |
description |
The combinations of Thematic Mapper (TM) bands that best distinguish basalts of the Brooks Range ophiolites were determined. Geochemical analyses, including major, trace, and rare earth elements (REE), are being done in order to study the significance of TM spectral variations that were observed within some of the sampled rock units. An image of the topography of the western Brooks Range and Colville Basin was constructed. Elevation data for the rest of Northern Alaska are being acquired to expand the area covered by the topography image. Two balanced cross sections (one along the eastern margin, the other along the western margin of the Brooks Range) are being constructed, using the techniques of fault-bend and fault-propagation folding. These are being used to obtain regional shortening estimates for the Brooks Range in an attempt to constrain tectonic models for the evolution of Northern Alaska. The TM data are being used to confirm reconnaissance maps and to obtain structural data where no maps exist. Along with the TM data, digital topography, seismic reflection profiles, and magnetic and gravity surveys are examined to better understand the evolution of the Colville Basin, north of the Brooks Range. |
format |
Other/Unknown Material |
author |
Bird, J. M. |
author_facet |
Bird, J. M. |
author_sort |
Bird, J. M. |
title |
Thematic mapper study of Alaskan ophiolites |
title_short |
Thematic mapper study of Alaskan ophiolites |
title_full |
Thematic mapper study of Alaskan ophiolites |
title_fullStr |
Thematic mapper study of Alaskan ophiolites |
title_full_unstemmed |
Thematic mapper study of Alaskan ophiolites |
title_sort |
thematic mapper study of alaskan ophiolites |
publishDate |
1986 |
url |
http://hdl.handle.net/2060/19870002602 |
op_coverage |
Unclassified, Unlimited, Publicly available |
genre |
Brooks Range Alaska |
genre_facet |
Brooks Range Alaska |
op_source |
CASI |
op_relation |
Document ID: 19870002602 Accession ID: 87N12035 http://hdl.handle.net/2060/19870002602 |
op_rights |
No Copyright |
_version_ |
1766381640532099072 |